modernizes hash syntax in activesupport

57 files changed, 1040 insertions, 1040 deletions

diff --git a/activesupport/Rakefile b/activesupport/Rakefile
index de3467529d..54d7a5c6f3 100644
--- a/activesupport/Rakefile
+++ b/activesupport/Rakefile
@@ -1,6 +1,6 @@
 require "rake/testtask"
 
-task :default => :test
+task default: :test
 
 task :package
 
diff --git a/activesupport/bin/generate_tables b/activesupport/bin/generate_tables
index c5ed991d94..d4e63644d9 100755
--- a/activesupport/bin/generate_tables
+++ b/activesupport/bin/generate_tables
@@ -20,10 +20,10 @@ module ActiveSupport
       class DatabaseGenerator
         BASE_URI = "http://www.unicode.org/Public/#{UNICODE_VERSION}/ucd/"
         SOURCES = {
-          :codepoints => BASE_URI + "UnicodeData.txt",
-          :composition_exclusion => BASE_URI + "CompositionExclusions.txt",
-          :grapheme_break_property => BASE_URI + "auxiliary/GraphemeBreakProperty.txt",
-          :cp1252 => "http://unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WINDOWS/CP1252.TXT"
+          codepoints: BASE_URI + "UnicodeData.txt",
+          composition_exclusion: BASE_URI + "CompositionExclusions.txt",
+          grapheme_break_property: BASE_URI + "auxiliary/GraphemeBreakProperty.txt",
+          cp1252: "http://unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WINDOWS/CP1252.TXT"
         }
 
         def initialize
diff --git a/activesupport/lib/active_support/cache.rb b/activesupport/lib/active_support/cache.rb
index 1920e9f7b4..a760915bfd 100644
--- a/activesupport/lib/active_support/cache.rb
+++ b/activesupport/lib/active_support/cache.rb
@@ -153,7 +153,7 @@ module ActiveSupport
     # or +write+. To specify the threshold at which to compress values, set the
     # <tt>:compress_threshold</tt> option. The default threshold is 16K.
     class Store
-      cattr_accessor :logger, :instance_writer => true
+      cattr_accessor :logger, instance_writer: true
 
       attr_reader :silence, :options
       alias :silence? :silence
@@ -557,7 +557,7 @@ module ActiveSupport
         def instrument(operation, key, options = nil)
           log { "Cache #{operation}: #{normalize_key(key, options)}#{options.blank? ? "" : " (#{options.inspect})"}" }
 
-          payload = { :key => key }
+          payload = { key: key }
           payload.merge!(options) if options.is_a?(Hash)
           ActiveSupport::Notifications.instrument("cache_#{operation}.active_support", payload){ yield(payload) }
         end
@@ -574,7 +574,7 @@ module ActiveSupport
               # When an entry has a positive :race_condition_ttl defined, put the stale entry back into the cache
               # for a brief period while the entry is being recalculated.
               entry.expires_at = Time.now + race_ttl
-              write_entry(key, entry, :expires_in => race_ttl * 2)
+              write_entry(key, entry, expires_in: race_ttl * 2)
             else
               delete_entry(key, options)
             end
diff --git a/activesupport/lib/active_support/cache/mem_cache_store.rb b/activesupport/lib/active_support/cache/mem_cache_store.rb
index 5db40b37b0..e8b56676cb 100644
--- a/activesupport/lib/active_support/cache/mem_cache_store.rb
+++ b/activesupport/lib/active_support/cache/mem_cache_store.rb
@@ -97,7 +97,7 @@ module ActiveSupport
         options = merged_options(options)
 
         keys_to_names = Hash[names.map{|name| [normalize_key(name, options), name]}]
-        raw_values = @data.get_multi(keys_to_names.keys, :raw => true)
+        raw_values = @data.get_multi(keys_to_names.keys, raw: true)
         values = {}
         raw_values.each do |key, value|
           entry = deserialize_entry(value)
@@ -112,7 +112,7 @@ module ActiveSupport
       # to zero.
       def increment(name, amount = 1, options = nil) # :nodoc:
         options = merged_options(options)
-        instrument(:increment, name, :amount => amount) do
+        instrument(:increment, name, amount: amount) do
           rescue_error_with nil do
             @data.incr(normalize_key(name, options), amount)
           end
@@ -125,7 +125,7 @@ module ActiveSupport
       # to zero.
       def decrement(name, amount = 1, options = nil) # :nodoc:
         options = merged_options(options)
-        instrument(:decrement, name, :amount => amount) do
+        instrument(:decrement, name, amount: amount) do
           rescue_error_with nil do
             @data.decr(normalize_key(name, options), amount)
           end
diff --git a/activesupport/lib/active_support/cache/memory_store.rb b/activesupport/lib/active_support/cache/memory_store.rb
index e61d9f3053..d7dc574f5b 100644
--- a/activesupport/lib/active_support/cache/memory_store.rb
+++ b/activesupport/lib/active_support/cache/memory_store.rb
@@ -39,7 +39,7 @@ module ActiveSupport
       # Preemptively iterates through all stored keys and removes the ones which have expired.
       def cleanup(options = nil)
         options = merged_options(options)
-        instrument(:cleanup, :size => @data.size) do
+        instrument(:cleanup, size: @data.size) do
           keys = synchronize{ @data.keys }
           keys.each do |key|
             entry = @data[key]
@@ -56,7 +56,7 @@ module ActiveSupport
         begin
           start_time = Time.now
           cleanup
-          instrument(:prune, target_size, :from => @cache_size) do
+          instrument(:prune, target_size, from: @cache_size) do
             keys = synchronize{ @key_access.keys.sort{|a,b| @key_access[a].to_f <=> @key_access[b].to_f} }
             keys.each do |key|
               delete_entry(key, options)
diff --git a/activesupport/lib/active_support/callbacks.rb b/activesupport/lib/active_support/callbacks.rb
index 9604777134..985f432c7b 100644
--- a/activesupport/lib/active_support/callbacks.rb
+++ b/activesupport/lib/active_support/callbacks.rb
@@ -323,8 +323,8 @@ module ActiveSupport
 
       def merge_conditional_options(chain, if_option:, unless_option:)
         options = {
-          :if     => @if.dup,
-          :unless => @unless.dup
+          if: @if.dup,
+          unless: @unless.dup
         }
 
         options[:if].concat     Array(unless_option)
diff --git a/activesupport/lib/active_support/core_ext/array/conversions.rb b/activesupport/lib/active_support/core_ext/array/conversions.rb
index 7d7e896170..1d4c83ae52 100644
--- a/activesupport/lib/active_support/core_ext/array/conversions.rb
+++ b/activesupport/lib/active_support/core_ext/array/conversions.rb
@@ -66,9 +66,9 @@ class Array
     options.assert_valid_keys(:words_connector, :two_words_connector, :last_word_connector, :locale, :fallback_string)
 
     default_connectors = {
-      :words_connector     => ", ",
-      :two_words_connector => " and ",
-      :last_word_connector => ", and "
+      words_connector: ", ",
+      two_words_connector: " and ",
+      last_word_connector: ", and "
     }
     if defined?(I18n)
       i18n_connectors = I18n.translate(:'support.array', locale: options[:locale], default: {})
diff --git a/activesupport/lib/active_support/core_ext/date/conversions.rb b/activesupport/lib/active_support/core_ext/date/conversions.rb
index 983dd829f6..d553406dff 100644
--- a/activesupport/lib/active_support/core_ext/date/conversions.rb
+++ b/activesupport/lib/active_support/core_ext/date/conversions.rb
@@ -5,16 +5,16 @@ require "active_support/core_ext/module/remove_method"
 
 class Date
   DATE_FORMATS = {
-    :short        => "%d %b",
-    :long         => "%B %d, %Y",
-    :db           => "%Y-%m-%d",
-    :number       => "%Y%m%d",
-    :long_ordinal => lambda { |date|
+    short: "%d %b",
+    long: "%B %d, %Y",
+    db: "%Y-%m-%d",
+    number: "%Y%m%d",
+    long_ordinal: lambda { |date|
       day_format = ActiveSupport::Inflector.ordinalize(date.day)
       date.strftime("%B #{day_format}, %Y") # => "April 25th, 2007"
     },
-    :rfc822       => "%d %b %Y",
-    :iso8601      => lambda { |date| date.iso8601 }
+    rfc822: "%d %b %Y",
+    iso8601: lambda { |date| date.iso8601 }
   }
 
   # Ruby 1.9 has Date#to_time which converts to localtime only.
diff --git a/activesupport/lib/active_support/core_ext/date_and_time/calculations.rb b/activesupport/lib/active_support/core_ext/date_and_time/calculations.rb
index e848a909e9..792076a449 100644
--- a/activesupport/lib/active_support/core_ext/date_and_time/calculations.rb
+++ b/activesupport/lib/active_support/core_ext/date_and_time/calculations.rb
@@ -3,13 +3,13 @@ require "active_support/core_ext/object/try"
 module DateAndTime
   module Calculations
     DAYS_INTO_WEEK = {
-      :monday    => 0,
-      :tuesday   => 1,
-      :wednesday => 2,
-      :thursday  => 3,
-      :friday    => 4,
-      :saturday  => 5,
-      :sunday    => 6
+      monday: 0,
+      tuesday: 1,
+      wednesday: 2,
+      thursday: 3,
+      friday: 4,
+      saturday: 5,
+      sunday: 6
     }
     WEEKEND_DAYS = [ 6, 0 ]
 
@@ -60,42 +60,42 @@ module DateAndTime
 
     # Returns a new date/time the specified number of days ago.
     def days_ago(days)
-      advance(:days => -days)
+      advance(days: -days)
     end
 
     # Returns a new date/time the specified number of days in the future.
     def days_since(days)
-      advance(:days => days)
+      advance(days: days)
     end
 
     # Returns a new date/time the specified number of weeks ago.
     def weeks_ago(weeks)
-      advance(:weeks => -weeks)
+      advance(weeks: -weeks)
     end
 
     # Returns a new date/time the specified number of weeks in the future.
     def weeks_since(weeks)
-      advance(:weeks => weeks)
+      advance(weeks: weeks)
     end
 
     # Returns a new date/time the specified number of months ago.
     def months_ago(months)
-      advance(:months => -months)
+      advance(months: -months)
     end
 
     # Returns a new date/time the specified number of months in the future.
     def months_since(months)
-      advance(:months => months)
+      advance(months: months)
     end
 
     # Returns a new date/time the specified number of years ago.
     def years_ago(years)
-      advance(:years => -years)
+      advance(years: -years)
     end
 
     # Returns a new date/time the specified number of years in the future.
     def years_since(years)
-      advance(:years => years)
+      advance(years: years)
     end
 
     # Returns a new date/time at the start of the month.
@@ -108,7 +108,7 @@ module DateAndTime
     #   now = DateTime.current # => Thu, 18 Jun 2015 15:23:13 +0000
     #   now.beginning_of_month # => Mon, 01 Jun 2015 00:00:00 +0000
     def beginning_of_month
-      first_hour(change(:day => 1))
+      first_hour(change(day: 1))
     end
     alias :at_beginning_of_month :beginning_of_month
 
@@ -123,7 +123,7 @@ module DateAndTime
     #   now.beginning_of_quarter # => Wed, 01 Jul 2015 00:00:00 +0000
     def beginning_of_quarter
       first_quarter_month = [10, 7, 4, 1].detect { |m| m <= month }
-      beginning_of_month.change(:month => first_quarter_month)
+      beginning_of_month.change(month: first_quarter_month)
     end
     alias :at_beginning_of_quarter :beginning_of_quarter
 
@@ -138,7 +138,7 @@ module DateAndTime
     #   now.end_of_quarter # => Wed, 30 Sep 2015 23:59:59 +0000
     def end_of_quarter
       last_quarter_month = [3, 6, 9, 12].detect { |m| m >= month }
-      beginning_of_month.change(:month => last_quarter_month).end_of_month
+      beginning_of_month.change(month: last_quarter_month).end_of_month
     end
     alias :at_end_of_quarter :end_of_quarter
 
@@ -152,7 +152,7 @@ module DateAndTime
     #   now = DateTime.current # => Fri, 10 Jul 2015 18:41:29 +0000
     #   now.beginning_of_year # => Thu, 01 Jan 2015 00:00:00 +0000
     def beginning_of_year
-      change(:month => 1).beginning_of_month
+      change(month: 1).beginning_of_month
     end
     alias :at_beginning_of_year :beginning_of_year
 
@@ -290,7 +290,7 @@ module DateAndTime
     # Returns a new date/time representing the end of the year.
     # DateTime objects will have a time set to 23:59:59.
     def end_of_year
-      change(:month => 12).end_of_month
+      change(month: 12).end_of_month
     end
     alias :at_end_of_year :end_of_year
 
diff --git a/activesupport/lib/active_support/core_ext/date_time/calculations.rb b/activesupport/lib/active_support/core_ext/date_time/calculations.rb
index 24297f954c..70d5c9af8e 100644
--- a/activesupport/lib/active_support/core_ext/date_time/calculations.rb
+++ b/activesupport/lib/active_support/core_ext/date_time/calculations.rb
@@ -75,7 +75,7 @@ class DateTime
     end
 
     d = to_date.advance(options)
-    datetime_advanced_by_date = change(:year => d.year, :month => d.month, :day => d.day)
+    datetime_advanced_by_date = change(year: d.year, month: d.month, day: d.day)
     seconds_to_advance = \
       options.fetch(:seconds, 0) +
       options.fetch(:minutes, 0) * 60 +
@@ -104,7 +104,7 @@ class DateTime
 
   # Returns a new DateTime representing the start of the day (0:00).
   def beginning_of_day
-    change(:hour => 0)
+    change(hour: 0)
   end
   alias :midnight :beginning_of_day
   alias :at_midnight :beginning_of_day
@@ -112,7 +112,7 @@ class DateTime
 
   # Returns a new DateTime representing the middle of the day (12:00)
   def middle_of_day
-    change(:hour => 12)
+    change(hour: 12)
   end
   alias :midday :middle_of_day
   alias :noon :middle_of_day
@@ -122,31 +122,31 @@ class DateTime
 
   # Returns a new DateTime representing the end of the day (23:59:59).
   def end_of_day
-    change(:hour => 23, :min => 59, :sec => 59)
+    change(hour: 23, min: 59, sec: 59)
   end
   alias :at_end_of_day :end_of_day
 
   # Returns a new DateTime representing the start of the hour (hh:00:00).
   def beginning_of_hour
-    change(:min => 0)
+    change(min: 0)
   end
   alias :at_beginning_of_hour :beginning_of_hour
 
   # Returns a new DateTime representing the end of the hour (hh:59:59).
   def end_of_hour
-    change(:min => 59, :sec => 59)
+    change(min: 59, sec: 59)
   end
   alias :at_end_of_hour :end_of_hour
 
   # Returns a new DateTime representing the start of the minute (hh:mm:00).
   def beginning_of_minute
-    change(:sec => 0)
+    change(sec: 0)
   end
   alias :at_beginning_of_minute :beginning_of_minute
 
   # Returns a new DateTime representing the end of the minute (hh:mm:59).
   def end_of_minute
-    change(:sec => 59)
+    change(sec: 59)
   end
   alias :at_end_of_minute :end_of_minute
 
diff --git a/activesupport/lib/active_support/core_ext/object/json.rb b/activesupport/lib/active_support/core_ext/object/json.rb
index 3e4894ce19..1c4d181443 100644
--- a/activesupport/lib/active_support/core_ext/object/json.rb
+++ b/activesupport/lib/active_support/core_ext/object/json.rb
@@ -208,7 +208,7 @@ end
 
 class Process::Status #:nodoc:
   def as_json(options = nil)
-    { :exitstatus => exitstatus, :pid => pid }
+    { exitstatus: exitstatus, pid: pid }
   end
 end
 
diff --git a/activesupport/lib/active_support/core_ext/range/conversions.rb b/activesupport/lib/active_support/core_ext/range/conversions.rb
index 965436c23a..69ea046cb6 100644
--- a/activesupport/lib/active_support/core_ext/range/conversions.rb
+++ b/activesupport/lib/active_support/core_ext/range/conversions.rb
@@ -1,6 +1,6 @@
 module ActiveSupport::RangeWithFormat
   RANGE_FORMATS = {
-    :db => Proc.new { |start, stop| "BETWEEN '#{start.to_s(:db)}' AND '#{stop.to_s(:db)}'" }
+    db: Proc.new { |start, stop| "BETWEEN '#{start.to_s(:db)}' AND '#{stop.to_s(:db)}'" }
   }
 
   # Convert range to a formatted string. See RANGE_FORMATS for predefined formats.
diff --git a/activesupport/lib/active_support/core_ext/time/calculations.rb b/activesupport/lib/active_support/core_ext/time/calculations.rb
index 756df53069..c87d0c0b63 100644
--- a/activesupport/lib/active_support/core_ext/time/calculations.rb
+++ b/activesupport/lib/active_support/core_ext/time/calculations.rb
@@ -61,7 +61,7 @@ class Time
   #   Time.new(2012, 8, 29, 12, 34, 56).seconds_since_midnight # => 45296.0
   #   Time.new(2012, 8, 29, 23, 59, 59).seconds_since_midnight # => 86399.0
   def seconds_since_midnight
-    to_i - change(:hour => 0).to_i + (usec / 1.0e+6)
+    to_i - change(hour: 0).to_i + (usec / 1.0e+6)
   end
 
   # Returns the number of seconds until 23:59:59.
@@ -141,7 +141,7 @@ class Time
 
     d = to_date.advance(options)
     d = d.gregorian if d.julian?
-    time_advanced_by_date = change(:year => d.year, :month => d.month, :day => d.day)
+    time_advanced_by_date = change(year: d.year, month: d.month, day: d.day)
     seconds_to_advance = \
       options.fetch(:seconds, 0) +
       options.fetch(:minutes, 0) * 60 +
@@ -169,7 +169,7 @@ class Time
 
   # Returns a new Time representing the start of the day (0:00)
   def beginning_of_day
-    change(:hour => 0)
+    change(hour: 0)
   end
   alias :midnight :beginning_of_day
   alias :at_midnight :beginning_of_day
@@ -177,7 +177,7 @@ class Time
 
   # Returns a new Time representing the middle of the day (12:00)
   def middle_of_day
-    change(:hour => 12)
+    change(hour: 12)
   end
   alias :midday :middle_of_day
   alias :noon :middle_of_day
@@ -188,41 +188,41 @@ class Time
   # Returns a new Time representing the end of the day, 23:59:59.999999
   def end_of_day
     change(
-      :hour => 23,
-      :min => 59,
-      :sec => 59,
-      :usec => Rational(999999999, 1000)
+      hour: 23,
+      min: 59,
+      sec: 59,
+      usec: Rational(999999999, 1000)
     )
   end
   alias :at_end_of_day :end_of_day
 
   # Returns a new Time representing the start of the hour (x:00)
   def beginning_of_hour
-    change(:min => 0)
+    change(min: 0)
   end
   alias :at_beginning_of_hour :beginning_of_hour
 
   # Returns a new Time representing the end of the hour, x:59:59.999999
   def end_of_hour
     change(
-      :min => 59,
-      :sec => 59,
-      :usec => Rational(999999999, 1000)
+      min: 59,
+      sec: 59,
+      usec: Rational(999999999, 1000)
     )
   end
   alias :at_end_of_hour :end_of_hour
 
   # Returns a new Time representing the start of the minute (x:xx:00)
   def beginning_of_minute
-    change(:sec => 0)
+    change(sec: 0)
   end
   alias :at_beginning_of_minute :beginning_of_minute
 
   # Returns a new Time representing the end of the minute, x:xx:59.999999
   def end_of_minute
     change(
-      :sec => 59,
-      :usec => Rational(999999999, 1000)
+      sec: 59,
+      usec: Rational(999999999, 1000)
     )
   end
   alias :at_end_of_minute :end_of_minute
diff --git a/activesupport/lib/active_support/core_ext/time/conversions.rb b/activesupport/lib/active_support/core_ext/time/conversions.rb
index 32f17992ec..f2bbe55aa6 100644
--- a/activesupport/lib/active_support/core_ext/time/conversions.rb
+++ b/activesupport/lib/active_support/core_ext/time/conversions.rb
@@ -3,22 +3,22 @@ require "active_support/values/time_zone"
 
 class Time
   DATE_FORMATS = {
-    :db           => "%Y-%m-%d %H:%M:%S",
-    :number       => "%Y%m%d%H%M%S",
-    :nsec         => "%Y%m%d%H%M%S%9N",
-    :usec         => "%Y%m%d%H%M%S%6N",
-    :time         => "%H:%M",
-    :short        => "%d %b %H:%M",
-    :long         => "%B %d, %Y %H:%M",
-    :long_ordinal => lambda { |time|
+    db: "%Y-%m-%d %H:%M:%S",
+    number: "%Y%m%d%H%M%S",
+    nsec: "%Y%m%d%H%M%S%9N",
+    usec: "%Y%m%d%H%M%S%6N",
+    time: "%H:%M",
+    short: "%d %b %H:%M",
+    long: "%B %d, %Y %H:%M",
+    long_ordinal: lambda { |time|
       day_format = ActiveSupport::Inflector.ordinalize(time.day)
       time.strftime("%B #{day_format}, %Y %H:%M")
     },
-    :rfc822       => lambda { |time|
+    rfc822: lambda { |time|
       offset_format = time.formatted_offset(false)
       time.strftime("%a, %d %b %Y %H:%M:%S #{offset_format}")
     },
-    :iso8601      => lambda { |time| time.iso8601 }
+    iso8601: lambda { |time| time.iso8601 }
   }
 
   # Converts to a formatted string. See DATE_FORMATS for built-in formats.
diff --git a/activesupport/lib/active_support/deprecation/behaviors.rb b/activesupport/lib/active_support/deprecation/behaviors.rb
index d2a15c3acb..1d1354c23e 100644
--- a/activesupport/lib/active_support/deprecation/behaviors.rb
+++ b/activesupport/lib/active_support/deprecation/behaviors.rb
@@ -34,7 +34,7 @@ module ActiveSupport
 
       notify: ->(message, callstack) {
         ActiveSupport::Notifications.instrument("deprecation.rails",
-                                                :message => message, :callstack => callstack)
+                                                message: message, callstack: callstack)
       },
 
       silence: ->(message, callstack) {},
diff --git a/activesupport/lib/active_support/inflector/transliterate.rb b/activesupport/lib/active_support/inflector/transliterate.rb
index 157342cb8a..8f7c6987bc 100644
--- a/activesupport/lib/active_support/inflector/transliterate.rb
+++ b/activesupport/lib/active_support/inflector/transliterate.rb
@@ -60,7 +60,7 @@ module ActiveSupport
     def transliterate(string, replacement = "?".freeze)
       I18n.transliterate(ActiveSupport::Multibyte::Unicode.normalize(
         ActiveSupport::Multibyte::Unicode.tidy_bytes(string), :c),
-          :replacement => replacement)
+          replacement: replacement)
     end
 
     # Replaces special characters in a string so that it may be used as part of
diff --git a/activesupport/lib/active_support/json/encoding.rb b/activesupport/lib/active_support/json/encoding.rb
index 164f1fe497..cee731417f 100644
--- a/activesupport/lib/active_support/json/encoding.rb
+++ b/activesupport/lib/active_support/json/encoding.rb
@@ -7,7 +7,7 @@ module ActiveSupport
       :time_precision, :time_precision=,
       :escape_html_entities_in_json, :escape_html_entities_in_json=,
       :json_encoder, :json_encoder=,
-      :to => :'ActiveSupport::JSON::Encoding'
+      to: :'ActiveSupport::JSON::Encoding'
   end
 
   module JSON
diff --git a/activesupport/lib/active_support/multibyte/chars.rb b/activesupport/lib/active_support/multibyte/chars.rb
index d6b5f253b2..c690b1b50b 100644
--- a/activesupport/lib/active_support/multibyte/chars.rb
+++ b/activesupport/lib/active_support/multibyte/chars.rb
@@ -46,7 +46,7 @@ module ActiveSupport #:nodoc:
       alias to_s wrapped_string
       alias to_str wrapped_string
 
-      delegate :<=>, :=~, :acts_like_string?, :to => :wrapped_string
+      delegate :<=>, :=~, :acts_like_string?, to: :wrapped_string
 
       # Creates a new Chars instance by wrapping _string_.
       def initialize(string)
diff --git a/activesupport/lib/active_support/number_helper/number_to_human_converter.rb b/activesupport/lib/active_support/number_helper/number_to_human_converter.rb
index bed1b2701b..695ee1dad3 100644
--- a/activesupport/lib/active_support/number_helper/number_to_human_converter.rb
+++ b/activesupport/lib/active_support/number_helper/number_to_human_converter.rb
@@ -40,7 +40,7 @@ module ActiveSupport
           when Hash
             units[exp] || ""
           when String, Symbol
-            I18n.translate("#{units}.#{exp}", :locale => options[:locale], :count => number.to_i)
+            I18n.translate("#{units}.#{exp}", locale: options[:locale], count: number.to_i)
           else
             translate_in_locale("human.decimal_units.units.#{exp}", count: number.to_i)
           end
@@ -56,7 +56,7 @@ module ActiveSupport
           when Hash
             units
           when String, Symbol
-            I18n.translate(units.to_s, :locale => options[:locale], :raise => true)
+            I18n.translate(units.to_s, locale: options[:locale], raise: true)
           when nil
             translate_in_locale("human.decimal_units.units", raise: true)
           else
diff --git a/activesupport/lib/active_support/number_helper/number_to_human_size_converter.rb b/activesupport/lib/active_support/number_helper/number_to_human_size_converter.rb
index fbd107463a..2b8ff77986 100644
--- a/activesupport/lib/active_support/number_helper/number_to_human_size_converter.rb
+++ b/activesupport/lib/active_support/number_helper/number_to_human_size_converter.rb
@@ -30,11 +30,11 @@ module ActiveSupport
       private
 
         def conversion_format
-          translate_number_value_with_default("human.storage_units.format", :locale => options[:locale], :raise => true)
+          translate_number_value_with_default("human.storage_units.format", locale: options[:locale], raise: true)
         end
 
         def unit
-          translate_number_value_with_default(storage_unit_key, :locale => options[:locale], :count => number.to_i, :raise => true)
+          translate_number_value_with_default(storage_unit_key, locale: options[:locale], count: number.to_i, raise: true)
         end
 
         def storage_unit_key
diff --git a/activesupport/lib/active_support/xml_mini.rb b/activesupport/lib/active_support/xml_mini.rb
index c6459ab0ee..5611b1b143 100644
--- a/activesupport/lib/active_support/xml_mini.rb
+++ b/activesupport/lib/active_support/xml_mini.rb
@@ -86,7 +86,7 @@ module ActiveSupport
     attr_accessor :depth
     self.depth = 100
 
-    delegate :parse, :to => :backend
+    delegate :parse, to: :backend
 
     def backend
       current_thread_backend || @backend
@@ -108,7 +108,7 @@ module ActiveSupport
 
     def to_tag(key, value, options)
       type_name = options.delete(:type)
-      merged_options = options.merge(:root => key, :skip_instruct => true)
+      merged_options = options.merge(root: key, skip_instruct: true)
 
       if value.is_a?(::Method) || value.is_a?(::Proc)
         if value.arity == 1
@@ -126,7 +126,7 @@ module ActiveSupport
 
         key = rename_key(key.to_s, options)
 
-        attributes = options[:skip_types] || type_name.nil? ? { } : { :type => type_name }
+        attributes = options[:skip_types] || type_name.nil? ? { } : { type: type_name }
         attributes[:nil] = true if value.nil?
 
         encoding = options[:encoding] || DEFAULT_ENCODINGS[type_name]
diff --git a/activesupport/test/benchmarkable_test.rb b/activesupport/test/benchmarkable_test.rb
index 02e0ed6a71..6b9eb5aa66 100644
--- a/activesupport/test/benchmarkable_test.rb
+++ b/activesupport/test/benchmarkable_test.rb
@@ -57,13 +57,13 @@ class BenchmarkableTest < ActiveSupport::TestCase
 
   def test_within_level
     logger.level = ActiveSupport::Logger::DEBUG
-    benchmark("included_debug_run", :level => :debug) { }
+    benchmark("included_debug_run", level: :debug) { }
     assert_last_logged "included_debug_run"
   end
 
   def test_outside_level
     logger.level = ActiveSupport::Logger::ERROR
-    benchmark("skipped_debug_run", :level => :debug) { }
+    benchmark("skipped_debug_run", level: :debug) { }
     assert_no_match(/skipped_debug_run/, buffer.last)
   ensure
     logger.level = ActiveSupport::Logger::DEBUG
diff --git a/activesupport/test/caching_test.rb b/activesupport/test/caching_test.rb
index 9d1c9724d9..be1f93a0b2 100644
--- a/activesupport/test/caching_test.rb
+++ b/activesupport/test/caching_test.rb
@@ -188,8 +188,8 @@ class CacheStoreSettingTest < ActiveSupport::TestCase
   end
 
   def test_mem_cache_fragment_cache_store_with_options
-    assert_called_with(Dalli::Client, :new, [%w[localhost 192.168.1.1], { :timeout => 10 }]) do
-      store = ActiveSupport::Cache.lookup_store :mem_cache_store, "localhost", "192.168.1.1", :namespace => "foo", :timeout => 10
+    assert_called_with(Dalli::Client, :new, [%w[localhost 192.168.1.1], { timeout: 10 }]) do
+      store = ActiveSupport::Cache.lookup_store :mem_cache_store, "localhost", "192.168.1.1", namespace: "foo", timeout: 10
       assert_kind_of(ActiveSupport::Cache::MemCacheStore, store)
       assert_equal "foo", store.options[:namespace]
     end
@@ -204,7 +204,7 @@ end
 
 class CacheStoreNamespaceTest < ActiveSupport::TestCase
   def test_static_namespace
-    cache = ActiveSupport::Cache.lookup_store(:memory_store, :namespace => "tester")
+    cache = ActiveSupport::Cache.lookup_store(:memory_store, namespace: "tester")
     cache.write("foo", "bar")
     assert_equal "bar", cache.read("foo")
     assert_equal "bar", cache.instance_variable_get(:@data)["tester:foo"].value
@@ -213,14 +213,14 @@ class CacheStoreNamespaceTest < ActiveSupport::TestCase
   def test_proc_namespace
     test_val = "tester"
     proc = lambda{test_val}
-    cache = ActiveSupport::Cache.lookup_store(:memory_store, :namespace => proc)
+    cache = ActiveSupport::Cache.lookup_store(:memory_store, namespace: proc)
     cache.write("foo", "bar")
     assert_equal "bar", cache.read("foo")
     assert_equal "bar", cache.instance_variable_get(:@data)["tester:foo"].value
   end
 
   def test_delete_matched_key_start
-    cache = ActiveSupport::Cache.lookup_store(:memory_store, :namespace => "tester")
+    cache = ActiveSupport::Cache.lookup_store(:memory_store, namespace: "tester")
     cache.write("foo", "bar")
     cache.write("fu", "baz")
     cache.delete_matched(/^fo/)
@@ -229,7 +229,7 @@ class CacheStoreNamespaceTest < ActiveSupport::TestCase
   end
 
   def test_delete_matched_key
-    cache = ActiveSupport::Cache.lookup_store(:memory_store, :namespace => "foo")
+    cache = ActiveSupport::Cache.lookup_store(:memory_store, namespace: "foo")
     cache.write("foo", "bar")
     cache.write("fu", "baz")
     cache.delete_matched(/OO/i)
@@ -277,8 +277,8 @@ module CacheStoreBehavior
   def test_fetch_with_forced_cache_miss
     @cache.write("foo", "bar")
     assert_not_called(@cache, :read) do
-      assert_called_with(@cache, :write, ["foo", "bar", @cache.options.merge(:force => true)]) do
-        @cache.fetch("foo", :force => true) { "bar" }
+      assert_called_with(@cache, :write, ["foo", "bar", @cache.options.merge(force: true)]) do
+        @cache.fetch("foo", force: true) { "bar" }
       end
     end
   end
@@ -305,8 +305,8 @@ module CacheStoreBehavior
   end
 
   def test_should_read_and_write_hash
-    assert @cache.write("foo", {:a => "b"})
-    assert_equal({:a => "b"}, @cache.read("foo"))
+    assert @cache.write("foo", {a: "b"})
+    assert_equal({a: "b"}, @cache.read("foo"))
   end
 
   def test_should_read_and_write_integer
@@ -333,7 +333,7 @@ module CacheStoreBehavior
 
   def test_read_multi_with_expires
     time = Time.now
-    @cache.write("foo", "bar", :expires_in => 10)
+    @cache.write("foo", "bar", expires_in: 10)
     @cache.write("fu", "baz")
     @cache.write("fud", "biz")
     Time.stub(:now, time + 11) do
@@ -364,17 +364,17 @@ module CacheStoreBehavior
   end
 
   def test_read_and_write_compressed_small_data
-    @cache.write("foo", "bar", :compress => true)
+    @cache.write("foo", "bar", compress: true)
     assert_equal "bar", @cache.read("foo")
   end
 
   def test_read_and_write_compressed_large_data
-    @cache.write("foo", "bar", :compress => true, :compress_threshold => 2)
+    @cache.write("foo", "bar", compress: true, compress_threshold: 2)
     assert_equal "bar", @cache.read("foo")
   end
 
   def test_read_and_write_compressed_nil
-    @cache.write("foo", nil, :compress => true)
+    @cache.write("foo", nil, compress: true)
     assert_nil @cache.read("foo")
   end
 
@@ -402,7 +402,7 @@ module CacheStoreBehavior
   end
 
   def test_hash_as_cache_key
-    @cache.write({:foo => 1, :fu => 2}, "bar")
+    @cache.write({foo: 1, fu: 2}, "bar")
     assert_equal "bar", @cache.read("foo=1/fu=2")
   end
 
@@ -467,9 +467,9 @@ module CacheStoreBehavior
 
   def test_race_condition_protection_is_limited
     time = Time.now
-    @cache.write("foo", "bar", :expires_in => 60)
+    @cache.write("foo", "bar", expires_in: 60)
     Time.stub(:now, time + 71) do
-      result = @cache.fetch("foo", :race_condition_ttl => 10) do
+      result = @cache.fetch("foo", race_condition_ttl: 10) do
         assert_equal nil, @cache.read("foo")
         "baz"
       end
@@ -479,10 +479,10 @@ module CacheStoreBehavior
 
   def test_race_condition_protection_is_safe
     time = Time.now
-    @cache.write("foo", "bar", :expires_in => 60)
+    @cache.write("foo", "bar", expires_in: 60)
     Time.stub(:now, time + 61) do
       begin
-        @cache.fetch("foo", :race_condition_ttl => 10) do
+        @cache.fetch("foo", race_condition_ttl: 10) do
           assert_equal "bar", @cache.read("foo")
           raise ArgumentError.new
         end
@@ -497,9 +497,9 @@ module CacheStoreBehavior
 
   def test_race_condition_protection
     time = Time.now
-    @cache.write("foo", "bar", :expires_in => 60)
+    @cache.write("foo", "bar", expires_in: 60)
     Time.stub(:now, time + 61) do
-      result = @cache.fetch("foo", :race_condition_ttl => 10) do
+      result = @cache.fetch("foo", race_condition_ttl: 10) do
         assert_equal "bar", @cache.read("foo")
         "baz"
       end
@@ -509,11 +509,11 @@ module CacheStoreBehavior
 
   def test_crazy_key_characters
     crazy_key = "#/:*(<+=> )&$%@?;'\"\'`~-"
-    assert @cache.write(crazy_key, "1", :raw => true)
+    assert @cache.write(crazy_key, "1", raw: true)
     assert_equal "1", @cache.read(crazy_key)
     assert_equal "1", @cache.fetch(crazy_key)
     assert @cache.delete(crazy_key)
-    assert_equal "2", @cache.fetch(crazy_key, :raw => true) { "2" }
+    assert_equal "2", @cache.fetch(crazy_key, raw: true) { "2" }
     assert_equal 3, @cache.increment(crazy_key)
     assert_equal 2, @cache.decrement(crazy_key)
   end
@@ -535,7 +535,7 @@ module CacheStoreBehavior
     ActiveSupport::Notifications.subscribe "cache_read.active_support" do |*args|
       @events << ActiveSupport::Notifications::Event.new(*args)
     end
-    assert @cache.write(key, "1", :raw => true)
+    assert @cache.write(key, "1", raw: true)
     assert @cache.fetch(key) {}
     assert_equal 1, @events.length
     assert_equal "cache_read.active_support", @events[0].name
@@ -575,11 +575,11 @@ module EncodedKeyCacheBehavior
   Encoding.list.each do |encoding|
     define_method "test_#{encoding.name.underscore}_encoded_values" do
       key = "foo".force_encoding(encoding)
-      assert @cache.write(key, "1", :raw => true)
+      assert @cache.write(key, "1", raw: true)
       assert_equal "1", @cache.read(key)
       assert_equal "1", @cache.fetch(key)
       assert @cache.delete(key)
-      assert_equal "2", @cache.fetch(key, :raw => true) { "2" }
+      assert_equal "2", @cache.fetch(key, raw: true) { "2" }
       assert_equal 3, @cache.increment(key)
       assert_equal 2, @cache.decrement(key)
     end
@@ -587,18 +587,18 @@ module EncodedKeyCacheBehavior
 
   def test_common_utf8_values
     key = "\xC3\xBCmlaut".force_encoding(Encoding::UTF_8)
-    assert @cache.write(key, "1", :raw => true)
+    assert @cache.write(key, "1", raw: true)
     assert_equal "1", @cache.read(key)
     assert_equal "1", @cache.fetch(key)
     assert @cache.delete(key)
-    assert_equal "2", @cache.fetch(key, :raw => true) { "2" }
+    assert_equal "2", @cache.fetch(key, raw: true) { "2" }
     assert_equal 3, @cache.increment(key)
     assert_equal 2, @cache.decrement(key)
   end
 
   def test_retains_encoding
     key = "\xC3\xBCmlaut".force_encoding(Encoding::UTF_8)
-    assert @cache.write(key, "1", :raw => true)
+    assert @cache.write(key, "1", raw: true)
     assert_equal Encoding::UTF_8, key.encoding
   end
 end
@@ -619,7 +619,7 @@ end
 
 module CacheIncrementDecrementBehavior
   def test_increment
-    @cache.write("foo", 1, :raw => true)
+    @cache.write("foo", 1, raw: true)
     assert_equal 1, @cache.read("foo").to_i
     assert_equal 2, @cache.increment("foo")
     assert_equal 2, @cache.read("foo").to_i
@@ -629,7 +629,7 @@ module CacheIncrementDecrementBehavior
   end
 
   def test_decrement
-    @cache.write("foo", 3, :raw => true)
+    @cache.write("foo", 3, raw: true)
     assert_equal 3, @cache.read("foo").to_i
     assert_equal 2, @cache.decrement("foo")
     assert_equal 2, @cache.read("foo").to_i
@@ -715,8 +715,8 @@ module LocalCacheBehavior
 
   def test_local_cache_of_increment
     @cache.with_local_cache do
-      @cache.write("foo", 1, :raw => true)
-      @peek.write("foo", 2, :raw => true)
+      @cache.write("foo", 1, raw: true)
+      @peek.write("foo", 2, raw: true)
       @cache.increment("foo")
       assert_equal 3, @cache.read("foo")
     end
@@ -724,8 +724,8 @@ module LocalCacheBehavior
 
   def test_local_cache_of_decrement
     @cache.with_local_cache do
-      @cache.write("foo", 1, :raw => true)
-      @peek.write("foo", 3, :raw => true)
+      @cache.write("foo", 1, raw: true)
+      @peek.write("foo", 3, raw: true)
       @cache.decrement("foo")
       assert_equal 2, @cache.read("foo")
     end
@@ -794,9 +794,9 @@ end
 class FileStoreTest < ActiveSupport::TestCase
   def setup
     Dir.mkdir(cache_dir) unless File.exist?(cache_dir)
-    @cache = ActiveSupport::Cache.lookup_store(:file_store, cache_dir, :expires_in => 60)
-    @peek = ActiveSupport::Cache.lookup_store(:file_store, cache_dir, :expires_in => 60)
-    @cache_with_pathname = ActiveSupport::Cache.lookup_store(:file_store, Pathname.new(cache_dir), :expires_in => 60)
+    @cache = ActiveSupport::Cache.lookup_store(:file_store, cache_dir, expires_in: 60)
+    @peek = ActiveSupport::Cache.lookup_store(:file_store, cache_dir, expires_in: 60)
+    @cache_with_pathname = ActiveSupport::Cache.lookup_store(:file_store, Pathname.new(cache_dir), expires_in: 60)
 
     @buffer = StringIO.new
     @cache.logger = ActiveSupport::Logger.new(@buffer)
@@ -928,7 +928,7 @@ end
 class MemoryStoreTest < ActiveSupport::TestCase
   def setup
     @record_size = ActiveSupport::Cache.lookup_store(:memory_store).send(:cached_size, 1, ActiveSupport::Cache::Entry.new("aaaaaaaaaa"))
-    @cache = ActiveSupport::Cache.lookup_store(:memory_store, :expires_in => 60, :size => @record_size * 10 + 1)
+    @cache = ActiveSupport::Cache.lookup_store(:memory_store, expires_in: 60, size: @record_size * 10 + 1)
   end
 
   include CacheStoreBehavior
@@ -1022,9 +1022,9 @@ class MemoryStoreTest < ActiveSupport::TestCase
 
   def test_write_with_unless_exist
     assert_equal true, @cache.write(1, "aaaaaaaaaa")
-    assert_equal false, @cache.write(1, "aaaaaaaaaa", :unless_exist => true)
+    assert_equal false, @cache.write(1, "aaaaaaaaaa", unless_exist: true)
     @cache.write(1, nil)
-    assert_equal false, @cache.write(1, "aaaaaaaaaa", :unless_exist => true)
+    assert_equal false, @cache.write(1, "aaaaaaaaaa", unless_exist: true)
   end
 end
 
@@ -1044,7 +1044,7 @@ class MemCacheStoreTest < ActiveSupport::TestCase
   def setup
     skip "memcache server is not up" unless MEMCACHE_UP
 
-    @cache = ActiveSupport::Cache.lookup_store(:mem_cache_store, :expires_in => 60)
+    @cache = ActiveSupport::Cache.lookup_store(:mem_cache_store, expires_in: 60)
     @peek = ActiveSupport::Cache.lookup_store(:mem_cache_store)
     @data = @cache.instance_variable_get(:@data)
     @cache.clear
@@ -1059,21 +1059,21 @@ class MemCacheStoreTest < ActiveSupport::TestCase
   include AutoloadingCacheBehavior
 
   def test_raw_values
-    cache = ActiveSupport::Cache.lookup_store(:mem_cache_store, :raw => true)
+    cache = ActiveSupport::Cache.lookup_store(:mem_cache_store, raw: true)
     cache.clear
     cache.write("foo", 2)
     assert_equal "2", cache.read("foo")
   end
 
   def test_raw_values_with_marshal
-    cache = ActiveSupport::Cache.lookup_store(:mem_cache_store, :raw => true)
+    cache = ActiveSupport::Cache.lookup_store(:mem_cache_store, raw: true)
     cache.clear
     cache.write("foo", Marshal.dump([]))
     assert_equal [], cache.read("foo")
   end
 
   def test_local_cache_raw_values
-    cache = ActiveSupport::Cache.lookup_store(:mem_cache_store, :raw => true)
+    cache = ActiveSupport::Cache.lookup_store(:mem_cache_store, raw: true)
     cache.clear
     cache.with_local_cache do
       cache.write("foo", 2)
@@ -1082,7 +1082,7 @@ class MemCacheStoreTest < ActiveSupport::TestCase
   end
 
   def test_local_cache_raw_values_with_marshal
-    cache = ActiveSupport::Cache.lookup_store(:mem_cache_store, :raw => true)
+    cache = ActiveSupport::Cache.lookup_store(:mem_cache_store, raw: true)
     cache.clear
     cache.with_local_cache do
       cache.write("foo", Marshal.dump([]))
@@ -1133,12 +1133,12 @@ class NullStoreTest < ActiveSupport::TestCase
   end
 
   def test_increment
-    @cache.write("name", 1, :raw => true)
+    @cache.write("name", 1, raw: true)
     assert_nil @cache.increment("name")
   end
 
   def test_decrement
-    @cache.write("name", 1, :raw => true)
+    @cache.write("name", 1, raw: true)
     assert_nil @cache.increment("name")
   end
 
@@ -1181,7 +1181,7 @@ class CacheStoreLoggerTest < ActiveSupport::TestCase
     proc = Proc.new do
       "proc_namespace"
     end
-    @cache.fetch("foo", {:namespace => proc}) { "bar" }
+    @cache.fetch("foo", {namespace: proc}) { "bar" }
     assert_match %r{proc_namespace:foo}, @buffer.string
   end
 
@@ -1195,7 +1195,7 @@ class CacheEntryTest < ActiveSupport::TestCase
   def test_expired
     entry = ActiveSupport::Cache::Entry.new("value")
     assert !entry.expired?, "entry not expired"
-    entry = ActiveSupport::Cache::Entry.new("value", :expires_in => 60)
+    entry = ActiveSupport::Cache::Entry.new("value", expires_in: 60)
     assert !entry.expired?, "entry not expired"
     Time.stub(:now, Time.now + 61) do
       assert entry.expired?, "entry is expired"
@@ -1204,7 +1204,7 @@ class CacheEntryTest < ActiveSupport::TestCase
 
   def test_compress_values
     value = "value" * 100
-    entry = ActiveSupport::Cache::Entry.new(value, :compress => true, :compress_threshold => 1)
+    entry = ActiveSupport::Cache::Entry.new(value, compress: true, compress_threshold: 1)
     assert_equal value, entry.value
     assert(value.bytesize > entry.size, "value is compressed")
   end
diff --git a/activesupport/test/callback_inheritance_test.rb b/activesupport/test/callback_inheritance_test.rb
index ab9627dfba..d1c217177d 100644
--- a/activesupport/test/callback_inheritance_test.rb
+++ b/activesupport/test/callback_inheritance_test.rb
@@ -9,8 +9,8 @@ class GrandParent
   end
 
   define_callbacks :dispatch
-  set_callback :dispatch, :before, :before1, :before2, :if => proc {|c| c.action_name == "index" || c.action_name == "update" }
-  set_callback :dispatch, :after, :after1, :after2, :if => proc {|c| c.action_name == "update" || c.action_name == "delete" }
+  set_callback :dispatch, :before, :before1, :before2, if: proc {|c| c.action_name == "index" || c.action_name == "update" }
+  set_callback :dispatch, :after, :after1, :after2, if: proc {|c| c.action_name == "update" || c.action_name == "delete" }
 
   def before1
     @log << "before1"
@@ -37,12 +37,12 @@ class GrandParent
 end
 
 class Parent < GrandParent
-  skip_callback :dispatch, :before, :before2, :unless => proc {|c| c.action_name == "update" }
-  skip_callback :dispatch, :after, :after2, :unless => proc {|c| c.action_name == "delete" }
+  skip_callback :dispatch, :before, :before2, unless: proc {|c| c.action_name == "update" }
+  skip_callback :dispatch, :after, :after2, unless: proc {|c| c.action_name == "delete" }
 end
 
 class Child < GrandParent
-  skip_callback :dispatch, :before, :before2, :unless => proc {|c| c.action_name == "update" }, :if => :state_open?
+  skip_callback :dispatch, :before, :before2, unless: proc {|c| c.action_name == "update" }, if: :state_open?
 
   def state_open?
     @state == :open
diff --git a/activesupport/test/callbacks_test.rb b/activesupport/test/callbacks_test.rb
index 9eef3135f6..ac2c539f66 100644
--- a/activesupport/test/callbacks_test.rb
+++ b/activesupport/test/callbacks_test.rb
@@ -72,11 +72,11 @@ module CallbacksTest
   end
 
   class PersonSkipper < Person
-    skip_callback :save, :before, :before_save_method, :if => :yes
-    skip_callback :save, :after,  :after_save_method, :unless => :yes
-    skip_callback :save, :after,  :after_save_method, :if => :no
-    skip_callback :save, :before, :before_save_method, :unless => :no
-    skip_callback :save, :before, CallbackClass , :if => :yes
+    skip_callback :save, :before, :before_save_method, if: :yes
+    skip_callback :save, :after,  :after_save_method, unless: :yes
+    skip_callback :save, :after,  :after_save_method, if: :no
+    skip_callback :save, :before, :before_save_method, unless: :no
+    skip_callback :save, :before, CallbackClass , if: :yes
     def yes; true; end
     def no; false; end
   end
@@ -89,7 +89,7 @@ module CallbacksTest
 
     define_callbacks :dispatch
 
-    set_callback :dispatch, :before, :log, :unless => proc {|c| c.action_name == :index || c.action_name == :show }
+    set_callback :dispatch, :before, :log, unless: proc {|c| c.action_name == :index || c.action_name == :show }
     set_callback :dispatch, :after, :log2
 
     attr_reader :action_name, :logger
@@ -114,7 +114,7 @@ module CallbacksTest
   end
 
   class Child < ParentController
-    skip_callback :dispatch, :before, :log, :if => proc {|c| c.action_name == :update}
+    skip_callback :dispatch, :before, :log, if: proc {|c| c.action_name == :update}
     skip_callback :dispatch, :after, :log2
   end
 
@@ -125,10 +125,10 @@ module CallbacksTest
       super
     end
 
-    before_save Proc.new {|r| r.history << [:before_save, :starts_true, :if] }, :if => :starts_true
-    before_save Proc.new {|r| r.history << [:before_save, :starts_false, :if] }, :if => :starts_false
-    before_save Proc.new {|r| r.history << [:before_save, :starts_true, :unless] }, :unless => :starts_true
-    before_save Proc.new {|r| r.history << [:before_save, :starts_false, :unless] }, :unless => :starts_false
+    before_save Proc.new {|r| r.history << [:before_save, :starts_true, :if] }, if: :starts_true
+    before_save Proc.new {|r| r.history << [:before_save, :starts_false, :if] }, if: :starts_false
+    before_save Proc.new {|r| r.history << [:before_save, :starts_true, :unless] }, unless: :starts_true
+    before_save Proc.new {|r| r.history << [:before_save, :starts_false, :unless] }, unless: :starts_false
 
     def starts_true
       if @@starts_true
@@ -185,23 +185,23 @@ module CallbacksTest
 
   class ConditionalPerson < Record
     # proc
-    before_save Proc.new { |r| r.history << [:before_save, :proc] }, :if => Proc.new { |r| true }
-    before_save Proc.new { |r| r.history << "b00m" }, :if => Proc.new { |r| false }
-    before_save Proc.new { |r| r.history << [:before_save, :proc] }, :unless => Proc.new { |r| false }
-    before_save Proc.new { |r| r.history << "b00m" }, :unless => Proc.new { |r| true }
+    before_save Proc.new { |r| r.history << [:before_save, :proc] }, if: Proc.new { |r| true }
+    before_save Proc.new { |r| r.history << "b00m" }, if: Proc.new { |r| false }
+    before_save Proc.new { |r| r.history << [:before_save, :proc] }, unless: Proc.new { |r| false }
+    before_save Proc.new { |r| r.history << "b00m" }, unless: Proc.new { |r| true }
     # symbol
-    before_save Proc.new { |r| r.history << [:before_save, :symbol] }, :if => :yes
-    before_save Proc.new { |r| r.history << "b00m" }, :if => :no
-    before_save Proc.new { |r| r.history << [:before_save, :symbol] }, :unless => :no
-    before_save Proc.new { |r| r.history << "b00m" }, :unless => :yes
+    before_save Proc.new { |r| r.history << [:before_save, :symbol] }, if: :yes
+    before_save Proc.new { |r| r.history << "b00m" }, if: :no
+    before_save Proc.new { |r| r.history << [:before_save, :symbol] }, unless: :no
+    before_save Proc.new { |r| r.history << "b00m" }, unless: :yes
     # string
-    before_save Proc.new { |r| r.history << [:before_save, :string] }, :if => "yes"
-    before_save Proc.new { |r| r.history << "b00m" }, :if => "no"
-    before_save Proc.new { |r| r.history << [:before_save, :string] }, :unless => "no"
-    before_save Proc.new { |r| r.history << "b00m" }, :unless => "yes"
+    before_save Proc.new { |r| r.history << [:before_save, :string] }, if: "yes"
+    before_save Proc.new { |r| r.history << "b00m" }, if: "no"
+    before_save Proc.new { |r| r.history << [:before_save, :string] }, unless: "no"
+    before_save Proc.new { |r| r.history << "b00m" }, unless: "yes"
     # Combined if and unless
-    before_save Proc.new { |r| r.history << [:before_save, :combined_symbol] }, :if => :yes, :unless => :no
-    before_save Proc.new { |r| r.history << "b00m" }, :if => :yes, :unless => :yes
+    before_save Proc.new { |r| r.history << [:before_save, :combined_symbol] }, if: :yes, unless: :no
+    before_save Proc.new { |r| r.history << "b00m" }, if: :yes, unless: :yes
 
     def yes; true; end
     def other_yes; true; end
@@ -225,18 +225,18 @@ module CallbacksTest
   class AroundPerson < MySuper
     attr_reader :history
 
-    set_callback :save, :before, :nope,           :if =>     :no
-    set_callback :save, :before, :nope,           :unless => :yes
+    set_callback :save, :before, :nope,           if: :no
+    set_callback :save, :before, :nope,           unless: :yes
     set_callback :save, :after,  :tweedle
     ActiveSupport::Deprecation.silence { set_callback :save, :before, "tweedle_dee" }
     set_callback :save, :before, proc {|m| m.history << "yup" }
-    set_callback :save, :before, :nope,           :if =>     proc { false }
-    set_callback :save, :before, :nope,           :unless => proc { true }
-    set_callback :save, :before, :yup,            :if =>     proc { true }
-    set_callback :save, :before, :yup,            :unless => proc { false }
+    set_callback :save, :before, :nope,           if: proc { false }
+    set_callback :save, :before, :nope,           unless: proc { true }
+    set_callback :save, :before, :yup,            if: proc { true }
+    set_callback :save, :before, :yup,            unless: proc { false }
     set_callback :save, :around, :tweedle_dum
-    set_callback :save, :around, :w0tyes,         :if =>     :yes
-    set_callback :save, :around, :w0tno,          :if =>     :no
+    set_callback :save, :around, :w0tyes,         if: :yes
+    set_callback :save, :around, :w0tno,          if: :no
     set_callback :save, :around, :tweedle_deedle
 
     def no; false; end
@@ -323,7 +323,7 @@ module CallbacksTest
     define_callbacks :save
     attr_reader :stuff
 
-    set_callback :save, :before, :action, :if => :yes
+    set_callback :save, :before, :action, if: :yes
 
     def yes() true end
 
@@ -637,7 +637,7 @@ module CallbacksTest
   class CustomScopeObject
     include ActiveSupport::Callbacks
 
-    define_callbacks :save, :scope => [:kind, :name]
+    define_callbacks :save, scope: [:kind, :name]
     set_callback :save, :before, CallbackObject.new
 
     attr_accessor :record
@@ -810,7 +810,7 @@ module CallbacksTest
 
   class WriterSkipper < Person
     attr_accessor :age
-    skip_callback :save, :before, :before_save_method, :if => lambda {self.age > 21}
+    skip_callback :save, :before, :before_save_method, if: lambda {self.age > 21}
   end
 
   class WriterCallbacksTest < ActiveSupport::TestCase
@@ -903,7 +903,7 @@ module CallbacksTest
       Class.new {
         include ActiveSupport::Callbacks
         define_callbacks :foo
-        set_callback :foo, :before, :foo, :if => callback
+        set_callback :foo, :before, :foo, if: callback
         def foo; end
         def run; run_callbacks :foo; end
       }
@@ -918,8 +918,8 @@ module CallbacksTest
       }
       klass = Class.new {
         include ActiveSupport::Callbacks
-        define_callbacks :foo, :scope => [:name]
-        set_callback :foo, :before, :foo, :if => callback
+        define_callbacks :foo, scope: [:name]
+        set_callback :foo, :before, :foo, if: callback
         def run; run_callbacks :foo; end
         private
         def foo; end
diff --git a/activesupport/test/core_ext/class/attribute_test.rb b/activesupport/test/core_ext/class/attribute_test.rb
index b1a10a007e..5a9ec78cc1 100644
--- a/activesupport/test/core_ext/class/attribute_test.rb
+++ b/activesupport/test/core_ext/class/attribute_test.rb
@@ -56,18 +56,18 @@ class ClassAttributeTest < ActiveSupport::TestCase
   end
 
   test "disabling instance writer" do
-    object = Class.new { class_attribute :setting, :instance_writer => false }.new
+    object = Class.new { class_attribute :setting, instance_writer: false }.new
     assert_raise(NoMethodError) { object.setting = "boom" }
   end
 
   test "disabling instance reader" do
-    object = Class.new { class_attribute :setting, :instance_reader => false }.new
+    object = Class.new { class_attribute :setting, instance_reader: false }.new
     assert_raise(NoMethodError) { object.setting }
     assert_raise(NoMethodError) { object.setting? }
   end
 
   test "disabling both instance writer and reader" do
-    object = Class.new { class_attribute :setting, :instance_accessor => false }.new
+    object = Class.new { class_attribute :setting, instance_accessor: false }.new
     assert_raise(NoMethodError) { object.setting }
     assert_raise(NoMethodError) { object.setting? }
     assert_raise(NoMethodError) { object.setting = "boom" }
diff --git a/activesupport/test/core_ext/date_ext_test.rb b/activesupport/test/core_ext/date_ext_test.rb
index 9368820a8e..0c9b88d861 100644
--- a/activesupport/test/core_ext/date_ext_test.rb
+++ b/activesupport/test/core_ext/date_ext_test.rb
@@ -81,10 +81,10 @@ class DateExtCalculationsTest < ActiveSupport::TestCase
   end
 
   def test_change
-    assert_equal Date.new(2005, 2, 21), Date.new(2005, 2, 11).change(:day => 21)
-    assert_equal Date.new(2007, 5, 11), Date.new(2005, 2, 11).change(:year => 2007, :month => 5)
-    assert_equal Date.new(2006,2,22), Date.new(2005,2,22).change(:year => 2006)
-    assert_equal Date.new(2005,6,22), Date.new(2005,2,22).change(:month => 6)
+    assert_equal Date.new(2005, 2, 21), Date.new(2005, 2, 11).change(day: 21)
+    assert_equal Date.new(2007, 5, 11), Date.new(2005, 2, 11).change(year: 2007, month: 5)
+    assert_equal Date.new(2006,2,22), Date.new(2005,2,22).change(year: 2006)
+    assert_equal Date.new(2005,6,22), Date.new(2005,2,22).change(month: 6)
   end
 
   def test_sunday
@@ -139,34 +139,34 @@ class DateExtCalculationsTest < ActiveSupport::TestCase
   end
 
   def test_advance
-    assert_equal Date.new(2006,2,28), Date.new(2005,2,28).advance(:years => 1)
-    assert_equal Date.new(2005,6,28), Date.new(2005,2,28).advance(:months => 4)
-    assert_equal Date.new(2005,3,21), Date.new(2005,2,28).advance(:weeks => 3)
-    assert_equal Date.new(2005,3,5), Date.new(2005,2,28).advance(:days => 5)
-    assert_equal Date.new(2012,9,28), Date.new(2005,2,28).advance(:years => 7, :months => 7)
-    assert_equal Date.new(2013,10,3), Date.new(2005,2,28).advance(:years => 7, :months => 19, :days => 5)
-    assert_equal Date.new(2013,10,17), Date.new(2005,2,28).advance(:years => 7, :months => 19, :weeks => 2, :days => 5)
-    assert_equal Date.new(2005,2,28), Date.new(2004,2,29).advance(:years => 1) #leap day plus one year
+    assert_equal Date.new(2006,2,28), Date.new(2005,2,28).advance(years: 1)
+    assert_equal Date.new(2005,6,28), Date.new(2005,2,28).advance(months: 4)
+    assert_equal Date.new(2005,3,21), Date.new(2005,2,28).advance(weeks: 3)
+    assert_equal Date.new(2005,3,5), Date.new(2005,2,28).advance(days: 5)
+    assert_equal Date.new(2012,9,28), Date.new(2005,2,28).advance(years: 7, months: 7)
+    assert_equal Date.new(2013,10,3), Date.new(2005,2,28).advance(years: 7, months: 19, days: 5)
+    assert_equal Date.new(2013,10,17), Date.new(2005,2,28).advance(years: 7, months: 19, weeks: 2, days: 5)
+    assert_equal Date.new(2005,2,28), Date.new(2004,2,29).advance(years: 1) #leap day plus one year
   end
 
   def test_advance_does_first_years_and_then_days
-    assert_equal Date.new(2012, 2, 29), Date.new(2011, 2, 28).advance(:years => 1, :days => 1)
+    assert_equal Date.new(2012, 2, 29), Date.new(2011, 2, 28).advance(years: 1, days: 1)
     # If day was done first we would jump to 2012-03-01 instead.
   end
 
   def test_advance_does_first_months_and_then_days
-    assert_equal Date.new(2010, 3, 29), Date.new(2010, 2, 28).advance(:months => 1, :days => 1)
+    assert_equal Date.new(2010, 3, 29), Date.new(2010, 2, 28).advance(months: 1, days: 1)
     # If day was done first we would jump to 2010-04-01 instead.
   end
 
   def test_advance_in_calendar_reform
-    assert_equal Date.new(1582,10,15), Date.new(1582,10,4).advance(:days => 1)
-    assert_equal Date.new(1582,10,4), Date.new(1582,10,15).advance(:days => -1)
+    assert_equal Date.new(1582,10,15), Date.new(1582,10,4).advance(days: 1)
+    assert_equal Date.new(1582,10,4), Date.new(1582,10,15).advance(days: -1)
     5.upto(14) do |day|
-      assert_equal Date.new(1582,10,4), Date.new(1582,9,day).advance(:months => 1)
-      assert_equal Date.new(1582,10,4), Date.new(1582,11,day).advance(:months => -1)
-      assert_equal Date.new(1582,10,4), Date.new(1581,10,day).advance(:years => 1)
-      assert_equal Date.new(1582,10,4), Date.new(1583,10,day).advance(:years => -1)
+      assert_equal Date.new(1582,10,4), Date.new(1582,9,day).advance(months: 1)
+      assert_equal Date.new(1582,10,4), Date.new(1582,11,day).advance(months: -1)
+      assert_equal Date.new(1582,10,4), Date.new(1581,10,day).advance(years: 1)
+      assert_equal Date.new(1582,10,4), Date.new(1583,10,day).advance(years: -1)
     end
   end
 
@@ -384,9 +384,9 @@ class DateExtCalculationsTest < ActiveSupport::TestCase
   end
 
   def test_date_advance_should_not_change_passed_options_hash
-    options = { :years => 3, :months => 11, :days => 2 }
+    options = { years: 3, months: 11, days: 2 }
     Date.new(2005,2,28).advance(options)
-    assert_equal({ :years => 3, :months => 11, :days => 2 }, options)
+    assert_equal({ years: 3, months: 11, days: 2 }, options)
   end
 end
 
diff --git a/activesupport/test/core_ext/date_time_ext_test.rb b/activesupport/test/core_ext/date_time_ext_test.rb
index 222a43f1b2..f2a50f4693 100644
--- a/activesupport/test/core_ext/date_time_ext_test.rb
+++ b/activesupport/test/core_ext/date_time_ext_test.rb
@@ -159,47 +159,47 @@ class DateTimeExtCalculationsTest < ActiveSupport::TestCase
   end
 
   def test_change
-    assert_equal DateTime.civil(2006,2,22,15,15,10), DateTime.civil(2005,2,22,15,15,10).change(:year => 2006)
-    assert_equal DateTime.civil(2005,6,22,15,15,10), DateTime.civil(2005,2,22,15,15,10).change(:month => 6)
-    assert_equal DateTime.civil(2012,9,22,15,15,10), DateTime.civil(2005,2,22,15,15,10).change(:year => 2012, :month => 9)
-    assert_equal DateTime.civil(2005,2,22,16),       DateTime.civil(2005,2,22,15,15,10).change(:hour => 16)
-    assert_equal DateTime.civil(2005,2,22,16,45),    DateTime.civil(2005,2,22,15,15,10).change(:hour => 16, :min => 45)
-    assert_equal DateTime.civil(2005,2,22,15,45),    DateTime.civil(2005,2,22,15,15,10).change(:min => 45)
+    assert_equal DateTime.civil(2006,2,22,15,15,10), DateTime.civil(2005,2,22,15,15,10).change(year: 2006)
+    assert_equal DateTime.civil(2005,6,22,15,15,10), DateTime.civil(2005,2,22,15,15,10).change(month: 6)
+    assert_equal DateTime.civil(2012,9,22,15,15,10), DateTime.civil(2005,2,22,15,15,10).change(year: 2012, month: 9)
+    assert_equal DateTime.civil(2005,2,22,16),       DateTime.civil(2005,2,22,15,15,10).change(hour: 16)
+    assert_equal DateTime.civil(2005,2,22,16,45),    DateTime.civil(2005,2,22,15,15,10).change(hour: 16, min: 45)
+    assert_equal DateTime.civil(2005,2,22,15,45),    DateTime.civil(2005,2,22,15,15,10).change(min: 45)
 
     # datetime with fractions of a second
-    assert_equal DateTime.civil(2005,2,1,15,15,10.7), DateTime.civil(2005,2,22,15,15,10.7).change(:day => 1)
+    assert_equal DateTime.civil(2005,2,1,15,15,10.7), DateTime.civil(2005,2,22,15,15,10.7).change(day: 1)
   end
 
   def test_advance
-    assert_equal DateTime.civil(2006,2,28,15,15,10),  DateTime.civil(2005,2,28,15,15,10).advance(:years => 1)
-    assert_equal DateTime.civil(2005,6,28,15,15,10),  DateTime.civil(2005,2,28,15,15,10).advance(:months => 4)
-    assert_equal DateTime.civil(2005,3,21,15,15,10),  DateTime.civil(2005,2,28,15,15,10).advance(:weeks => 3)
-    assert_equal DateTime.civil(2005,3,5,15,15,10),   DateTime.civil(2005,2,28,15,15,10).advance(:days => 5)
-    assert_equal DateTime.civil(2012,9,28,15,15,10),  DateTime.civil(2005,2,28,15,15,10).advance(:years => 7, :months => 7)
-    assert_equal DateTime.civil(2013,10,3,15,15,10),  DateTime.civil(2005,2,28,15,15,10).advance(:years => 7, :months => 19, :days => 5)
-    assert_equal DateTime.civil(2013,10,17,15,15,10), DateTime.civil(2005,2,28,15,15,10).advance(:years => 7, :months => 19, :weeks => 2, :days => 5)
-    assert_equal DateTime.civil(2001,12,27,15,15,10), DateTime.civil(2005,2,28,15,15,10).advance(:years => -3, :months => -2, :days => -1)
-    assert_equal DateTime.civil(2005,2,28,15,15,10),  DateTime.civil(2004,2,29,15,15,10).advance(:years => 1) #leap day plus one year
-    assert_equal DateTime.civil(2005,2,28,20,15,10),  DateTime.civil(2005,2,28,15,15,10).advance(:hours => 5)
-    assert_equal DateTime.civil(2005,2,28,15,22,10),  DateTime.civil(2005,2,28,15,15,10).advance(:minutes => 7)
-    assert_equal DateTime.civil(2005,2,28,15,15,19),  DateTime.civil(2005,2,28,15,15,10).advance(:seconds => 9)
-    assert_equal DateTime.civil(2005,2,28,20,22,19),  DateTime.civil(2005,2,28,15,15,10).advance(:hours => 5, :minutes => 7, :seconds => 9)
-    assert_equal DateTime.civil(2005,2,28,10,8,1),    DateTime.civil(2005,2,28,15,15,10).advance(:hours => -5, :minutes => -7, :seconds => -9)
-    assert_equal DateTime.civil(2013,10,17,20,22,19), DateTime.civil(2005,2,28,15,15,10).advance(:years => 7, :months => 19, :weeks => 2, :days => 5, :hours => 5, :minutes => 7, :seconds => 9)
+    assert_equal DateTime.civil(2006,2,28,15,15,10),  DateTime.civil(2005,2,28,15,15,10).advance(years: 1)
+    assert_equal DateTime.civil(2005,6,28,15,15,10),  DateTime.civil(2005,2,28,15,15,10).advance(months: 4)
+    assert_equal DateTime.civil(2005,3,21,15,15,10),  DateTime.civil(2005,2,28,15,15,10).advance(weeks: 3)
+    assert_equal DateTime.civil(2005,3,5,15,15,10),   DateTime.civil(2005,2,28,15,15,10).advance(days: 5)
+    assert_equal DateTime.civil(2012,9,28,15,15,10),  DateTime.civil(2005,2,28,15,15,10).advance(years: 7, months: 7)
+    assert_equal DateTime.civil(2013,10,3,15,15,10),  DateTime.civil(2005,2,28,15,15,10).advance(years: 7, months: 19, days: 5)
+    assert_equal DateTime.civil(2013,10,17,15,15,10), DateTime.civil(2005,2,28,15,15,10).advance(years: 7, months: 19, weeks: 2, days: 5)
+    assert_equal DateTime.civil(2001,12,27,15,15,10), DateTime.civil(2005,2,28,15,15,10).advance(years: -3, months: -2, days: -1)
+    assert_equal DateTime.civil(2005,2,28,15,15,10),  DateTime.civil(2004,2,29,15,15,10).advance(years: 1) #leap day plus one year
+    assert_equal DateTime.civil(2005,2,28,20,15,10),  DateTime.civil(2005,2,28,15,15,10).advance(hours: 5)
+    assert_equal DateTime.civil(2005,2,28,15,22,10),  DateTime.civil(2005,2,28,15,15,10).advance(minutes: 7)
+    assert_equal DateTime.civil(2005,2,28,15,15,19),  DateTime.civil(2005,2,28,15,15,10).advance(seconds: 9)
+    assert_equal DateTime.civil(2005,2,28,20,22,19),  DateTime.civil(2005,2,28,15,15,10).advance(hours: 5, minutes: 7, seconds: 9)
+    assert_equal DateTime.civil(2005,2,28,10,8,1),    DateTime.civil(2005,2,28,15,15,10).advance(hours: -5, minutes: -7, seconds: -9)
+    assert_equal DateTime.civil(2013,10,17,20,22,19), DateTime.civil(2005,2,28,15,15,10).advance(years: 7, months: 19, weeks: 2, days: 5, hours: 5, minutes: 7, seconds: 9)
   end
 
   def test_advance_partial_days
-    assert_equal DateTime.civil(2012,9,29,13,15,10),  DateTime.civil(2012,9,28,1,15,10).advance(:days => 1.5)
-    assert_equal DateTime.civil(2012,9,28,13,15,10),  DateTime.civil(2012,9,28,1,15,10).advance(:days => 0.5)
-    assert_equal DateTime.civil(2012,10,29,13,15,10), DateTime.civil(2012,9,28,1,15,10).advance(:days => 1.5, :months => 1)
+    assert_equal DateTime.civil(2012,9,29,13,15,10),  DateTime.civil(2012,9,28,1,15,10).advance(days: 1.5)
+    assert_equal DateTime.civil(2012,9,28,13,15,10),  DateTime.civil(2012,9,28,1,15,10).advance(days: 0.5)
+    assert_equal DateTime.civil(2012,10,29,13,15,10), DateTime.civil(2012,9,28,1,15,10).advance(days: 1.5, months: 1)
   end
 
   def test_advanced_processes_first_the_date_deltas_and_then_the_time_deltas
     # If the time deltas were processed first, the following datetimes would be advanced to 2010/04/01 instead.
-    assert_equal DateTime.civil(2010, 3, 29), DateTime.civil(2010, 2, 28, 23, 59, 59).advance(:months => 1, :seconds => 1)
-    assert_equal DateTime.civil(2010, 3, 29), DateTime.civil(2010, 2, 28, 23, 59).advance(:months => 1, :minutes => 1)
-    assert_equal DateTime.civil(2010, 3, 29), DateTime.civil(2010, 2, 28, 23).advance(:months => 1, :hours => 1)
-    assert_equal DateTime.civil(2010, 3, 29), DateTime.civil(2010, 2, 28, 22, 58, 59).advance(:months => 1, :hours => 1, :minutes => 1, :seconds => 1)
+    assert_equal DateTime.civil(2010, 3, 29), DateTime.civil(2010, 2, 28, 23, 59, 59).advance(months: 1, seconds: 1)
+    assert_equal DateTime.civil(2010, 3, 29), DateTime.civil(2010, 2, 28, 23, 59).advance(months: 1, minutes: 1)
+    assert_equal DateTime.civil(2010, 3, 29), DateTime.civil(2010, 2, 28, 23).advance(months: 1, hours: 1)
+    assert_equal DateTime.civil(2010, 3, 29), DateTime.civil(2010, 2, 28, 22, 58, 59).advance(months: 1, hours: 1, minutes: 1, seconds: 1)
   end
 
   def test_last_week
diff --git a/activesupport/test/core_ext/hash_ext_test.rb b/activesupport/test/core_ext/hash_ext_test.rb
index 6c1a6b1ed4..1253c13c5a 100644
--- a/activesupport/test/core_ext/hash_ext_test.rb
+++ b/activesupport/test/core_ext/hash_ext_test.rb
@@ -36,10 +36,10 @@ class HashExtTest < ActiveSupport::TestCase
   def setup
     @strings = { "a" => 1, "b" => 2 }
     @nested_strings = { "a" => { "b" => { "c" => 3 } } }
-    @symbols = { :a => 1, :b => 2 }
-    @nested_symbols = { :a => { :b => { :c => 3 } } }
+    @symbols = { a: 1, b: 2 }
+    @nested_symbols = { a: { b: { c: 3 } } }
     @mixed = { :a => 1, "b" => 2 }
-    @nested_mixed = { "a" => { :b => { "c" => 3 } } }
+    @nested_mixed = { "a" => { b: { "c" => 3 } } }
     @integers = { 0 => 1, 1 => 2 }
     @nested_integers = { 0 => { 1 => { 2 => 3} } }
     @illegal_symbols = { [] => 3 }
@@ -47,8 +47,8 @@ class HashExtTest < ActiveSupport::TestCase
     @upcase_strings = { "A" => 1, "B" => 2 }
     @nested_upcase_strings = { "A" => { "B" => { "C" => 3 } } }
     @string_array_of_hashes = { "a" => [ { "b" => 2 }, { "c" => 3 }, 4 ] }
-    @symbol_array_of_hashes = { :a => [ { :b => 2 }, { :c => 3 }, 4 ] }
-    @mixed_array_of_hashes = { :a => [ { :b => 2 }, { "c" => 3 }, 4 ] }
+    @symbol_array_of_hashes = { a: [ { b: 2 }, { c: 3 }, 4 ] }
+    @mixed_array_of_hashes = { a: [ { b: 2 }, { "c" => 3 }, 4 ] }
     @upcase_array_of_hashes = { "A" => [ { "B" => 2 }, { "C" => 3 }, 4 ] }
   end
 
@@ -127,7 +127,7 @@ class HashExtTest < ActiveSupport::TestCase
     transformed_hash = @nested_mixed.deep_dup
     transformed_hash.deep_transform_keys!{ |key| key.to_s.upcase }
     assert_equal @nested_upcase_strings, transformed_hash
-    assert_equal @nested_mixed, { "a" => { :b => { "c" => 3 } } }
+    assert_equal @nested_mixed, { "a" => { b: { "c" => 3 } } }
   end
 
   def test_symbolize_keys
@@ -183,7 +183,7 @@ class HashExtTest < ActiveSupport::TestCase
     transformed_hash = @nested_mixed.deep_dup
     transformed_hash.deep_symbolize_keys!
     assert_equal @nested_symbols, transformed_hash
-    assert_equal @nested_mixed, { "a" => { :b => { "c" => 3 } } }
+    assert_equal @nested_mixed, { "a" => { b: { "c" => 3 } } }
   end
 
   def test_symbolize_keys_preserves_keys_that_cant_be_symbolized
@@ -259,7 +259,7 @@ class HashExtTest < ActiveSupport::TestCase
     transformed_hash = @nested_mixed.deep_dup
     transformed_hash.deep_stringify_keys!
     assert_equal @nested_strings, transformed_hash
-    assert_equal @nested_mixed, { "a" => { :b => { "c" => 3 } } }
+    assert_equal @nested_mixed, { "a" => { b: { "c" => 3 } } }
   end
 
   def test_symbolize_keys_for_hash_with_indifferent_access
@@ -360,9 +360,9 @@ class HashExtTest < ActiveSupport::TestCase
     assert_equal 1, @strings.fetch(:a)
 
     hashes = { :@strings => @strings, :@symbols => @symbols, :@mixed => @mixed }
-    method_map = { :'[]' => 1, :fetch => 1, :values_at => [1],
-      :has_key? => true, :include? => true, :key? => true,
-      :member? => true }
+    method_map = { '[]': 1, fetch: 1, values_at: [1],
+      has_key?: true, include?: true, key?: true,
+      member?: true }
 
     hashes.each do |name, hash|
       method_map.sort_by(&:to_s).each do |meth, expected|
@@ -447,7 +447,7 @@ class HashExtTest < ActiveSupport::TestCase
 
   def test_update_with_to_hash_conversion
     hash = HashWithIndifferentAccess.new
-    hash.update HashByConversion.new({ :a => 1 })
+    hash.update HashByConversion.new({ a: 1 })
     assert_equal hash["a"], 1
   end
 
@@ -472,7 +472,7 @@ class HashExtTest < ActiveSupport::TestCase
 
   def test_merge_with_to_hash_conversion
     hash = HashWithIndifferentAccess.new
-    merged = hash.merge HashByConversion.new({ :a => 1 })
+    merged = hash.merge HashByConversion.new({ a: 1 })
     assert_equal merged["a"], 1
   end
 
@@ -529,13 +529,13 @@ class HashExtTest < ActiveSupport::TestCase
     assert_equal :old_value, hash[:key]
 
     hash = HashWithIndifferentAccess.new("some" => "value", "other" => "value")
-    hash.reverse_merge!(:some => "noclobber", :another => "clobber")
+    hash.reverse_merge!(some: "noclobber", another: "clobber")
     assert_equal "value", hash[:some]
     assert_equal "clobber", hash[:another]
   end
 
   def test_indifferent_deleting
-    get_hash = proc{ { :a => "foo" }.with_indifferent_access }
+    get_hash = proc{ { a: "foo" }.with_indifferent_access }
     hash = get_hash.call
     assert_equal hash.delete(:a), "foo"
     assert_equal hash.delete(:a), nil
@@ -687,7 +687,7 @@ class HashExtTest < ActiveSupport::TestCase
     h = {"user" => {"id" => 5}}.with_indifferent_access
     ["user", :user].each {|user| [:id, "id"].each {|id| assert_equal 5, h[user][id], "h[#{user.inspect}][#{id.inspect}] should be 5"}}
 
-    h = {:user => {:id => 5}}.with_indifferent_access
+    h = {user: {id: 5}}.with_indifferent_access
     ["user", :user].each {|user| [:id, "id"].each {|id| assert_equal 5, h[user][id], "h[#{user.inspect}][#{id.inspect}] should be 5"}}
   end
 
@@ -710,32 +710,32 @@ class HashExtTest < ActiveSupport::TestCase
 
   def test_assert_valid_keys
     assert_nothing_raised do
-      { :failure => "stuff", :funny => "business" }.assert_valid_keys([ :failure, :funny ])
-      { :failure => "stuff", :funny => "business" }.assert_valid_keys(:failure, :funny)
+      { failure: "stuff", funny: "business" }.assert_valid_keys([ :failure, :funny ])
+      { failure: "stuff", funny: "business" }.assert_valid_keys(:failure, :funny)
     end
     # not all valid keys are required to be present
     assert_nothing_raised do
-      { :failure => "stuff", :funny => "business" }.assert_valid_keys([ :failure, :funny, :sunny ])
-      { :failure => "stuff", :funny => "business" }.assert_valid_keys(:failure, :funny, :sunny)
+      { failure: "stuff", funny: "business" }.assert_valid_keys([ :failure, :funny, :sunny ])
+      { failure: "stuff", funny: "business" }.assert_valid_keys(:failure, :funny, :sunny)
     end
 
     exception = assert_raise ArgumentError do
-      { :failore => "stuff", :funny => "business" }.assert_valid_keys([ :failure, :funny ])
+      { failore: "stuff", funny: "business" }.assert_valid_keys([ :failure, :funny ])
     end
     assert_equal "Unknown key: :failore. Valid keys are: :failure, :funny", exception.message
 
     exception = assert_raise ArgumentError do
-      { :failore => "stuff", :funny => "business" }.assert_valid_keys(:failure, :funny)
+      { failore: "stuff", funny: "business" }.assert_valid_keys(:failure, :funny)
     end
     assert_equal "Unknown key: :failore. Valid keys are: :failure, :funny", exception.message
 
     exception = assert_raise ArgumentError do
-      { :failore => "stuff", :funny => "business" }.assert_valid_keys([ :failure ])
+      { failore: "stuff", funny: "business" }.assert_valid_keys([ :failure ])
     end
     assert_equal "Unknown key: :failore. Valid keys are: :failure", exception.message
 
     exception = assert_raise ArgumentError do
-      { :failore => "stuff", :funny => "business" }.assert_valid_keys(:failure)
+      { failore: "stuff", funny: "business" }.assert_valid_keys(:failure)
     end
     assert_equal "Unknown key: :failore. Valid keys are: :failure", exception.message
   end
@@ -747,9 +747,9 @@ class HashExtTest < ActiveSupport::TestCase
   end
 
   def test_deep_merge
-    hash_1 = { :a => "a", :b => "b", :c => { :c1 => "c1", :c2 => "c2", :c3 => { :d1 => "d1" } } }
-    hash_2 = { :a => 1, :c => { :c1 => 2, :c3 => { :d2 => "d2" } } }
-    expected = { :a => 1, :b => "b", :c => { :c1 => 2, :c2 => "c2", :c3 => { :d1 => "d1", :d2 => "d2" } } }
+    hash_1 = { a: "a", b: "b", c: { c1: "c1", c2: "c2", c3: { d1: "d1" } } }
+    hash_2 = { a: 1, c: { c1: 2, c3: { d2: "d2" } } }
+    expected = { a: 1, b: "b", c: { c1: 2, c2: "c2", c3: { d1: "d1", d2: "d2" } } }
     assert_equal expected, hash_1.deep_merge(hash_2)
 
     hash_1.deep_merge!(hash_2)
@@ -757,9 +757,9 @@ class HashExtTest < ActiveSupport::TestCase
   end
 
   def test_deep_merge_with_block
-    hash_1 = { :a => "a", :b => "b", :c => { :c1 => "c1", :c2 => "c2", :c3 => { :d1 => "d1" } } }
-    hash_2 = { :a => 1, :c => { :c1 => 2, :c3 => { :d2 => "d2" } } }
-    expected = { :a => [:a, "a", 1], :b => "b", :c => { :c1 => [:c1, "c1", 2], :c2 => "c2", :c3 => { :d1 => "d1", :d2 => "d2" } } }
+    hash_1 = { a: "a", b: "b", c: { c1: "c1", c2: "c2", c3: { d1: "d1" } } }
+    hash_2 = { a: 1, c: { c1: 2, c3: { d2: "d2" } } }
+    expected = { a: [:a, "a", 1], b: "b", c: { c1: [:c1, "c1", 2], c2: "c2", c3: { d1: "d1", d2: "d2" } } }
     assert_equal(expected, hash_1.deep_merge(hash_2) { |k,o,n| [k, o, n] })
 
     hash_1.deep_merge!(hash_2) { |k,o,n| [k, o, n] }
@@ -777,9 +777,9 @@ class HashExtTest < ActiveSupport::TestCase
   end
 
   def test_deep_merge_on_indifferent_access
-    hash_1 = HashWithIndifferentAccess.new({ :a => "a", :b => "b", :c => { :c1 => "c1", :c2 => "c2", :c3 => { :d1 => "d1" } } })
-    hash_2 = HashWithIndifferentAccess.new({ :a => 1, :c => { :c1 => 2, :c3 => { :d2 => "d2" } } })
-    hash_3 = { :a => 1, :c => { :c1 => 2, :c3 => { :d2 => "d2" } } }
+    hash_1 = HashWithIndifferentAccess.new({ a: "a", b: "b", c: { c1: "c1", c2: "c2", c3: { d1: "d1" } } })
+    hash_2 = HashWithIndifferentAccess.new({ a: 1, c: { c1: 2, c3: { d2: "d2" } } })
+    hash_3 = { a: 1, c: { c1: 2, c3: { d2: "d2" } } }
     expected = { "a" => 1, "b" => "b", "c" => { "c1" => 2, "c2" => "c2", "c3" => { "d1" => "d1", "d2" => "d2" } } }
     assert_equal expected, hash_1.deep_merge(hash_2)
     assert_equal expected, hash_1.deep_merge(hash_3)
@@ -808,9 +808,9 @@ class HashExtTest < ActiveSupport::TestCase
   end
 
   def test_reverse_merge
-    defaults = { :a => "x", :b => "y", :c => 10 }.freeze
-    options  = { :a => 1, :b => 2 }
-    expected = { :a => 1, :b => 2, :c => 10 }
+    defaults = { a: "x", b: "y", c: 10 }.freeze
+    options  = { a: 1, b: 2 }
+    expected = { a: 1, b: 2, c: 10 }
 
     # Should merge defaults into options, creating a new hash.
     assert_equal expected, options.reverse_merge(defaults)
@@ -828,8 +828,8 @@ class HashExtTest < ActiveSupport::TestCase
   end
 
   def test_slice
-    original = { :a => "x", :b => "y", :c => 10 }
-    expected = { :a => "x", :b => "y" }
+    original = { a: "x", b: "y", c: 10 }
+    expected = { a: "x", b: "y" }
 
     # Should return a new hash with only the given keys.
     assert_equal expected, original.slice(:a, :b)
@@ -837,8 +837,8 @@ class HashExtTest < ActiveSupport::TestCase
   end
 
   def test_slice_inplace
-    original = { :a => "x", :b => "y", :c => 10 }
-    expected = { :c => 10 }
+    original = { a: "x", b: "y", c: 10 }
+    expected = { c: 10 }
 
     # Should replace the hash with only the given keys.
     assert_equal expected, original.slice!(:a, :b)
@@ -855,7 +855,7 @@ class HashExtTest < ActiveSupport::TestCase
 
   def test_slice_inplace_with_an_array_key
     original = { :a => "x", :b => "y", :c => 10, [:a, :b] => "an array key" }
-    expected = { :a => "x", :b => "y" }
+    expected = { a: "x", b: "y" }
 
     # Should replace the hash with only the given keys when given an array key.
     assert_equal expected, original.slice!([:a, :b], :c)
@@ -863,15 +863,15 @@ class HashExtTest < ActiveSupport::TestCase
 
   def test_slice_with_splatted_keys
     original = { :a => "x", :b => "y", :c => 10, [:a, :b] => "an array key" }
-    expected = { :a => "x", :b => "y" }
+    expected = { a: "x", b: "y" }
 
     # Should grab each of the splatted keys.
     assert_equal expected, original.slice(*[:a, :b])
   end
 
   def test_indifferent_slice
-    original = { :a => "x", :b => "y", :c => 10 }.with_indifferent_access
-    expected = { :a => "x", :b => "y" }.with_indifferent_access
+    original = { a: "x", b: "y", c: 10 }.with_indifferent_access
+    expected = { a: "x", b: "y" }.with_indifferent_access
 
     [["a", "b"], [:a, :b]].each do |keys|
       # Should return a new hash with only the given keys.
@@ -881,8 +881,8 @@ class HashExtTest < ActiveSupport::TestCase
   end
 
   def test_indifferent_slice_inplace
-    original = { :a => "x", :b => "y", :c => 10 }.with_indifferent_access
-    expected = { :c => 10 }.with_indifferent_access
+    original = { a: "x", b: "y", c: 10 }.with_indifferent_access
+    expected = { c: 10 }.with_indifferent_access
 
     [["a", "b"], [:a, :b]].each do |keys|
       # Should replace the hash with only the given keys.
@@ -920,17 +920,17 @@ class HashExtTest < ActiveSupport::TestCase
   end
 
   def test_extract
-    original = {:a => 1, :b => 2, :c => 3, :d => 4}
-    expected = {:a => 1, :b => 2}
-    remaining = {:c => 3, :d => 4}
+    original = {a: 1, b: 2, c: 3, d: 4}
+    expected = {a: 1, b: 2}
+    remaining = {c: 3, d: 4}
 
     assert_equal expected, original.extract!(:a, :b, :x)
     assert_equal remaining, original
   end
 
   def test_extract_nils
-    original = {:a => nil, :b => nil}
-    expected = {:a => nil}
+    original = {a: nil, b: nil}
+    expected = {a: nil}
     extracted = original.extract!(:a, :x)
 
     assert_equal expected, extracted
@@ -940,8 +940,8 @@ class HashExtTest < ActiveSupport::TestCase
 
   def test_indifferent_extract
     original = {:a => 1, "b" => 2, :c => 3, "d" => 4}.with_indifferent_access
-    expected = {:a => 1, :b => 2}.with_indifferent_access
-    remaining = {:c => 3, :d => 4}.with_indifferent_access
+    expected = {a: 1, b: 2}.with_indifferent_access
+    remaining = {c: 3, d: 4}.with_indifferent_access
 
     [["a", "b"], [:a, :b]].each do |keys|
       copy = original.dup
@@ -951,8 +951,8 @@ class HashExtTest < ActiveSupport::TestCase
   end
 
   def test_except
-    original = { :a => "x", :b => "y", :c => 10 }
-    expected = { :a => "x", :b => "y" }
+    original = { a: "x", b: "y", c: 10 }
+    expected = { a: "x", b: "y" }
 
     # Should return a new hash without the given keys.
     assert_equal expected, original.except(:c)
@@ -964,8 +964,8 @@ class HashExtTest < ActiveSupport::TestCase
   end
 
   def test_except_with_more_than_one_argument
-    original = { :a => "x", :b => "y", :c => 10 }
-    expected = { :a => "x" }
+    original = { a: "x", b: "y", c: 10 }
+    expected = { a: "x" }
 
     assert_equal expected, original.except(:b, :c)
 
@@ -974,7 +974,7 @@ class HashExtTest < ActiveSupport::TestCase
   end
 
   def test_except_with_original_frozen
-    original = { :a => "x", :b => "y" }
+    original = { a: "x", b: "y" }
     original.freeze
     assert_nothing_raised { original.except(:a) }
 
@@ -982,7 +982,7 @@ class HashExtTest < ActiveSupport::TestCase
   end
 
   def test_except_does_not_delete_values_in_original
-    original = { :a => "x", :b => "y" }
+    original = { a: "x", b: "y" }
     assert_not_called(original, :delete) do
       original.except(:a)
     end
@@ -1081,7 +1081,7 @@ end
 class IWriteMyOwnXML
   def to_xml(options = {})
     options[:indent] ||= 2
-    xml = options[:builder] ||= Builder::XmlMarkup.new(:indent => options[:indent])
+    xml = options[:builder] ||= Builder::XmlMarkup.new(indent: options[:indent])
     xml.instruct! unless options[:skip_instruct]
     xml.level_one do
       xml.tag!(:second_level, "content")
@@ -1098,7 +1098,7 @@ class HashExtToParamTests < ActiveSupport::TestCase
 
   def test_string_hash
     assert_equal "", {}.to_param
-    assert_equal "hello=world", { :hello => "world" }.to_param
+    assert_equal "hello=world", { hello: "world" }.to_param
     assert_equal "hello=10", { "hello" => 10 }.to_param
     assert_equal "hello=world&say_bye=true", {:hello => "world", "say_bye" => true}.to_param
   end
@@ -1122,46 +1122,46 @@ end
 
 class HashToXmlTest < ActiveSupport::TestCase
   def setup
-    @xml_options = { :root => :person, :skip_instruct => true, :indent => 0 }
+    @xml_options = { root: :person, skip_instruct: true, indent: 0 }
   end
 
   def test_one_level
-    xml = { :name => "David", :street => "Paulina" }.to_xml(@xml_options)
+    xml = { name: "David", street: "Paulina" }.to_xml(@xml_options)
     assert_equal "<person>", xml.first(8)
     assert xml.include?(%(<street>Paulina</street>))
     assert xml.include?(%(<name>David</name>))
   end
 
   def test_one_level_dasherize_false
-    xml = { :name => "David", :street_name => "Paulina" }.to_xml(@xml_options.merge(:dasherize => false))
+    xml = { name: "David", street_name: "Paulina" }.to_xml(@xml_options.merge(dasherize: false))
     assert_equal "<person>", xml.first(8)
     assert xml.include?(%(<street_name>Paulina</street_name>))
     assert xml.include?(%(<name>David</name>))
   end
 
   def test_one_level_dasherize_true
-    xml = { :name => "David", :street_name => "Paulina" }.to_xml(@xml_options.merge(:dasherize => true))
+    xml = { name: "David", street_name: "Paulina" }.to_xml(@xml_options.merge(dasherize: true))
     assert_equal "<person>", xml.first(8)
     assert xml.include?(%(<street-name>Paulina</street-name>))
     assert xml.include?(%(<name>David</name>))
   end
 
   def test_one_level_camelize_true
-    xml = { :name => "David", :street_name => "Paulina" }.to_xml(@xml_options.merge(:camelize => true))
+    xml = { name: "David", street_name: "Paulina" }.to_xml(@xml_options.merge(camelize: true))
     assert_equal "<Person>", xml.first(8)
     assert xml.include?(%(<StreetName>Paulina</StreetName>))
     assert xml.include?(%(<Name>David</Name>))
   end
 
   def test_one_level_camelize_lower
-    xml = { :name => "David", :street_name => "Paulina" }.to_xml(@xml_options.merge(:camelize => :lower))
+    xml = { name: "David", street_name: "Paulina" }.to_xml(@xml_options.merge(camelize: :lower))
     assert_equal "<person>", xml.first(8)
     assert xml.include?(%(<streetName>Paulina</streetName>))
     assert xml.include?(%(<name>David</name>))
   end
 
   def test_one_level_with_types
-    xml = { :name => "David", :street => "Paulina", :age => 26, :age_in_millis => 820497600000, :moved_on => Date.new(2005, 11, 15), :resident => :yes }.to_xml(@xml_options)
+    xml = { name: "David", street: "Paulina", age: 26, age_in_millis: 820497600000, moved_on: Date.new(2005, 11, 15), resident: :yes }.to_xml(@xml_options)
     assert_equal "<person>", xml.first(8)
     assert xml.include?(%(<street>Paulina</street>))
     assert xml.include?(%(<name>David</name>))
@@ -1172,7 +1172,7 @@ class HashToXmlTest < ActiveSupport::TestCase
   end
 
   def test_one_level_with_nils
-    xml = { :name => "David", :street => "Paulina", :age => nil }.to_xml(@xml_options)
+    xml = { name: "David", street: "Paulina", age: nil }.to_xml(@xml_options)
     assert_equal "<person>", xml.first(8)
     assert xml.include?(%(<street>Paulina</street>))
     assert xml.include?(%(<name>David</name>))
@@ -1180,7 +1180,7 @@ class HashToXmlTest < ActiveSupport::TestCase
   end
 
   def test_one_level_with_skipping_types
-    xml = { :name => "David", :street => "Paulina", :age => nil }.to_xml(@xml_options.merge(:skip_types => true))
+    xml = { name: "David", street: "Paulina", age: nil }.to_xml(@xml_options.merge(skip_types: true))
     assert_equal "<person>", xml.first(8)
     assert xml.include?(%(<street>Paulina</street>))
     assert xml.include?(%(<name>David</name>))
@@ -1188,7 +1188,7 @@ class HashToXmlTest < ActiveSupport::TestCase
   end
 
   def test_one_level_with_yielding
-    xml = { :name => "David", :street => "Paulina" }.to_xml(@xml_options) do |x|
+    xml = { name: "David", street: "Paulina" }.to_xml(@xml_options) do |x|
       x.creator("Rails")
     end
 
@@ -1199,21 +1199,21 @@ class HashToXmlTest < ActiveSupport::TestCase
   end
 
   def test_two_levels
-    xml = { :name => "David", :address => { :street => "Paulina" } }.to_xml(@xml_options)
+    xml = { name: "David", address: { street: "Paulina" } }.to_xml(@xml_options)
     assert_equal "<person>", xml.first(8)
     assert xml.include?(%(<address><street>Paulina</street></address>))
     assert xml.include?(%(<name>David</name>))
   end
 
   def test_two_levels_with_second_level_overriding_to_xml
-    xml = { :name => "David", :address => { :street => "Paulina" }, :child => IWriteMyOwnXML.new }.to_xml(@xml_options)
+    xml = { name: "David", address: { street: "Paulina" }, child: IWriteMyOwnXML.new }.to_xml(@xml_options)
     assert_equal "<person>", xml.first(8)
     assert xml.include?(%(<address><street>Paulina</street></address>))
     assert xml.include?(%(<level_one><second_level>content</second_level></level_one>))
   end
 
   def test_two_levels_with_array
-    xml = { :name => "David", :addresses => [{ :street => "Paulina" }, { :street => "Evergreen" }] }.to_xml(@xml_options)
+    xml = { name: "David", addresses: [{ street: "Paulina" }, { street: "Evergreen" }] }.to_xml(@xml_options)
     assert_equal "<person>", xml.first(8)
     assert xml.include?(%(<addresses type="array"><address>))
     assert xml.include?(%(<address><street>Paulina</street></address>))
@@ -1222,14 +1222,14 @@ class HashToXmlTest < ActiveSupport::TestCase
   end
 
   def test_three_levels_with_array
-    xml = { :name => "David", :addresses => [{ :streets => [ { :name => "Paulina" }, { :name => "Paulina" } ] } ] }.to_xml(@xml_options)
+    xml = { name: "David", addresses: [{ streets: [ { name: "Paulina" }, { name: "Paulina" } ] } ] }.to_xml(@xml_options)
     assert xml.include?(%(<addresses type="array"><address><streets type="array"><street><name>))
   end
 
   def test_timezoned_attributes
     xml = {
-      :created_at => Time.utc(1999,2,2),
-      :local_created_at => Time.utc(1999,2,2).in_time_zone("Eastern Time (US & Canada)")
+      created_at: Time.utc(1999,2,2),
+      local_created_at: Time.utc(1999,2,2).in_time_zone("Eastern Time (US & Canada)")
     }.to_xml(@xml_options)
     assert_match %r{<created-at type=\"dateTime\">1999-02-02T00:00:00Z</created-at>}, xml
     assert_match %r{<local-created-at type=\"dateTime\">1999-02-01T19:00:00-05:00</local-created-at>}, xml
@@ -1268,17 +1268,17 @@ class HashToXmlTest < ActiveSupport::TestCase
     EOT
 
     expected_topic_hash = {
-      :title => "The First Topic",
-      :author_name => "David",
-      :id => 1,
-      :approved => false,
-      :replies_count => 0,
-      :replies_close_in => 2592000000,
-      :written_on => Date.new(2003, 7, 16),
-      :viewed_at => Time.utc(2003, 7, 16, 9, 28),
-      :content => "Have a nice day",
-      :author_email_address => "david@loudthinking.com",
-      :parent_id => nil
+      title: "The First Topic",
+      author_name: "David",
+      id: 1,
+      approved: false,
+      replies_count: 0,
+      replies_close_in: 2592000000,
+      written_on: Date.new(2003, 7, 16),
+      viewed_at: Time.utc(2003, 7, 16, 9, 28),
+      content: "Have a nice day",
+      author_email_address: "david@loudthinking.com",
+      parent_id: nil
     }.stringify_keys
 
     assert_equal expected_topic_hash, Hash.from_xml(topics_xml)["topics"].first
@@ -1303,18 +1303,18 @@ class HashToXmlTest < ActiveSupport::TestCase
     EOT
 
     expected_topic_hash = {
-      :title => "The First Topic",
-      :author_name => "David",
-      :id => 1,
-      :approved => true,
-      :replies_count => 0,
-      :replies_close_in => 2592000000,
-      :written_on => Date.new(2003, 7, 16),
-      :viewed_at => Time.utc(2003, 7, 16, 9, 28),
-      :author_email_address => "david@loudthinking.com",
-      :parent_id => nil,
-      :ad_revenue => BigDecimal("1.50"),
-      :optimum_viewing_angle => 135.0,
+      title: "The First Topic",
+      author_name: "David",
+      id: 1,
+      approved: true,
+      replies_count: 0,
+      replies_close_in: 2592000000,
+      written_on: Date.new(2003, 7, 16),
+      viewed_at: Time.utc(2003, 7, 16, 9, 28),
+      author_email_address: "david@loudthinking.com",
+      parent_id: nil,
+      ad_revenue: BigDecimal("1.50"),
+      optimum_viewing_angle: 135.0,
     }.stringify_keys
 
     assert_equal expected_topic_hash, Hash.from_xml(topic_xml)["topic"]
@@ -1333,12 +1333,12 @@ class HashToXmlTest < ActiveSupport::TestCase
     EOT
 
     expected_topic_hash = {
-      :title      => nil,
-      :id         => nil,
-      :approved   => nil,
-      :written_on => nil,
-      :viewed_at  => nil,
-      :parent_id  => nil
+      title: nil,
+      id: nil,
+      approved: nil,
+      written_on: nil,
+      viewed_at: nil,
+      parent_id: nil
     }.stringify_keys
 
     assert_equal expected_topic_hash, Hash.from_xml(topic_xml)["topic"]
@@ -1377,17 +1377,17 @@ class HashToXmlTest < ActiveSupport::TestCase
     EOT
 
     expected_topic_hash = {
-      :title => "The First Topic",
-      :author_name => "David",
-      :id => 1,
-      :approved => false,
-      :replies_count => 0,
-      :replies_close_in => 2592000000,
-      :written_on => Date.new(2003, 7, 16),
-      :viewed_at => Time.utc(2003, 7, 16, 9, 28),
-      :content => "Have a nice day",
-      :author_email_address => "david@loudthinking.com",
-      :parent_id => nil
+      title: "The First Topic",
+      author_name: "David",
+      id: 1,
+      approved: false,
+      replies_count: 0,
+      replies_close_in: 2592000000,
+      written_on: Date.new(2003, 7, 16),
+      viewed_at: Time.utc(2003, 7, 16, 9, 28),
+      content: "Have a nice day",
+      author_email_address: "david@loudthinking.com",
+      parent_id: nil
     }.stringify_keys
 
     assert_equal expected_topic_hash, Hash.from_xml(topics_xml)["topics"].first
@@ -1403,14 +1403,14 @@ class HashToXmlTest < ActiveSupport::TestCase
     EOT
 
     expected_topic_hash = {
-      :id => "175756086",
-      :owner => "55569174@N00",
-      :secret => "0279bf37a1",
-      :server => "76",
-      :title => "Colored Pencil PhotoBooth Fun",
-      :ispublic => "1",
-      :isfriend => "0",
-      :isfamily => "0",
+      id: "175756086",
+      owner: "55569174@N00",
+      secret: "0279bf37a1",
+      server: "76",
+      title: "Colored Pencil PhotoBooth Fun",
+      ispublic: "1",
+      isfriend: "0",
+      isfamily: "0",
     }.stringify_keys
 
     assert_equal expected_topic_hash, Hash.from_xml(topic_xml)["rsp"]["photos"]["photo"]
@@ -1535,13 +1535,13 @@ class HashToXmlTest < ActiveSupport::TestCase
     EOT
 
     expected_bacon_hash = {
-      :weight => 0.5,
-      :chunky => true,
-      :price => BigDecimal("12.50"),
-      :expires_at => Time.utc(2007,12,25,12,34,56),
-      :notes => "",
-      :illustration => "babe.png",
-      :caption => "That'll do, pig."
+      weight: 0.5,
+      chunky: true,
+      price: BigDecimal("12.50"),
+      expires_at: Time.utc(2007,12,25,12,34,56),
+      notes: "",
+      illustration: "babe.png",
+      caption: "That'll do, pig."
     }.stringify_keys
 
     assert_equal expected_bacon_hash, Hash.from_xml(bacon_xml)["bacon"]
@@ -1557,8 +1557,8 @@ class HashToXmlTest < ActiveSupport::TestCase
     EOT
 
     expected_product_hash = {
-      :weight => 0.5,
-      :image => {"type" => "ProductImage", "filename" => "image.gif" },
+      weight: 0.5,
+      image: {"type" => "ProductImage", "filename" => "image.gif" },
     }.stringify_keys
 
     assert_equal expected_product_hash, Hash.from_xml(product_xml)["product"]
@@ -1654,7 +1654,7 @@ class HashToXmlTest < ActiveSupport::TestCase
   # The XML builder seems to fail miserably when trying to tag something
   # with the same name as a Kernel method (throw, test, loop, select ...)
   def test_kernel_method_names_to_xml
-    hash     = { :throw => { :ball => "red" } }
+    hash     = { throw: { ball: "red" } }
     expected = "<person><throw><ball>red</ball></throw></person>"
 
     assert_nothing_raised do
@@ -1670,8 +1670,8 @@ class HashToXmlTest < ActiveSupport::TestCase
 
   def test_escaping_to_xml
     hash = {
-      :bare_string        => "First & Last Name",
-      :pre_escaped_string => "First &amp; Last Name"
+      bare_string: "First & Last Name",
+      pre_escaped_string: "First &amp; Last Name"
     }.stringify_keys
 
     expected_xml = "<person><bare-string>First &amp; Last Name</bare-string><pre-escaped-string>First &amp;amp; Last Name</pre-escaped-string></person>"
@@ -1681,16 +1681,16 @@ class HashToXmlTest < ActiveSupport::TestCase
   def test_unescaping_from_xml
     xml_string = "<person><bare-string>First &amp; Last Name</bare-string><pre-escaped-string>First &amp;amp; Last Name</pre-escaped-string></person>"
     expected_hash = {
-      :bare_string        => "First & Last Name",
-      :pre_escaped_string => "First &amp; Last Name"
+      bare_string: "First & Last Name",
+      pre_escaped_string: "First &amp; Last Name"
     }.stringify_keys
     assert_equal expected_hash, Hash.from_xml(xml_string)["person"]
   end
 
   def test_roundtrip_to_xml_from_xml
     hash = {
-      :bare_string        => "First & Last Name",
-      :pre_escaped_string => "First &amp; Last Name"
+      bare_string: "First & Last Name",
+      pre_escaped_string: "First &amp; Last Name"
     }.stringify_keys
 
     assert_equal hash, Hash.from_xml(hash.to_xml(@xml_options))["person"]
@@ -1735,10 +1735,10 @@ class HashToXmlTest < ActiveSupport::TestCase
   end
 
   def test_to_xml_dups_options
-    options = {:skip_instruct => true}
+    options = {skip_instruct: true}
     {}.to_xml(options)
     # :builder, etc, shouldn't be added to options
-    assert_equal({:skip_instruct => true}, options)
+    assert_equal({skip_instruct: true}, options)
   end
 
   def test_expansion_count_is_limited
diff --git a/activesupport/test/core_ext/module/attribute_accessor_test.rb b/activesupport/test/core_ext/module/attribute_accessor_test.rb
index 0c66e2c33c..fea6806b9b 100644
--- a/activesupport/test/core_ext/module/attribute_accessor_test.rb
+++ b/activesupport/test/core_ext/module/attribute_accessor_test.rb
@@ -5,9 +5,9 @@ class ModuleAttributeAccessorTest < ActiveSupport::TestCase
   def setup
     m = @module = Module.new do
       mattr_accessor :foo
-      mattr_accessor :bar, :instance_writer => false
-      mattr_reader   :shaq, :instance_reader => false
-      mattr_accessor :camp, :instance_accessor => false
+      mattr_accessor :bar, instance_writer: false
+      mattr_reader   :shaq, instance_reader: false
+      mattr_accessor :camp, instance_accessor: false
 
       cattr_accessor(:defa) { "default_accessor_value" }
       cattr_reader(:defr) { "default_reader_value" }
diff --git a/activesupport/test/core_ext/module_test.rb b/activesupport/test/core_ext/module_test.rb
index 3d7ec0ef91..9a2e52efa7 100644
--- a/activesupport/test/core_ext/module_test.rb
+++ b/activesupport/test/core_ext/module_test.rb
@@ -25,21 +25,21 @@ Somewhere = Struct.new(:street, :city) do
 end
 
 class Someone < Struct.new(:name, :place)
-  delegate :street, :city, :to_f, :to => :place
-  delegate :name=, :to => :place, :prefix => true
-  delegate :upcase, :to => "place.city"
-  delegate :table_name, :to => :class
-  delegate :table_name, :to => :class, :prefix => true
+  delegate :street, :city, :to_f, to: :place
+  delegate :name=, to: :place, prefix: true
+  delegate :upcase, to: "place.city"
+  delegate :table_name, to: :class
+  delegate :table_name, to: :class, prefix: true
 
   def self.table_name
     "some_table"
   end
 
   FAILED_DELEGATE_LINE = __LINE__ + 1
-  delegate :foo, :to => :place
+  delegate :foo, to: :place
 
   FAILED_DELEGATE_LINE_2 = __LINE__ + 1
-  delegate :bar, :to => :place, :allow_nil => true
+  delegate :bar, to: :place, allow_nil: true
 
   private
 
@@ -49,32 +49,32 @@ class Someone < Struct.new(:name, :place)
 end
 
 Invoice   = Struct.new(:client) do
-  delegate :street, :city, :name, :to => :client, :prefix => true
-  delegate :street, :city, :name, :to => :client, :prefix => :customer
+  delegate :street, :city, :name, to: :client, prefix: true
+  delegate :street, :city, :name, to: :client, prefix: :customer
 end
 
 Project   = Struct.new(:description, :person) do
-  delegate :name, :to => :person, :allow_nil => true
-  delegate :to_f, :to => :description, :allow_nil => true
+  delegate :name, to: :person, allow_nil: true
+  delegate :to_f, to: :description, allow_nil: true
 end
 
 Developer = Struct.new(:client) do
-  delegate :name, :to => :client, :prefix => nil
+  delegate :name, to: :client, prefix: nil
 end
 
 Event = Struct.new(:case) do
-  delegate :foo, :to => :case
+  delegate :foo, to: :case
 end
 
 Tester = Struct.new(:client) do
-  delegate :name, :to => :client, :prefix => false
+  delegate :name, to: :client, prefix: false
 
   def foo; 1; end
 end
 
 Product = Struct.new(:name) do
-  delegate :name, :to => :manufacturer, :prefix => true
-  delegate :name, :to => :type, :prefix => true
+  delegate :name, to: :manufacturer, prefix: true
+  delegate :name, to: :type, prefix: true
 
   def manufacturer
     @manufacturer ||= begin
@@ -114,15 +114,15 @@ HasBlock = Struct.new(:block) do
 end
 
 class ParameterSet
-  delegate :[], :[]=, :to => :@params
+  delegate :[], :[]=, to: :@params
 
   def initialize
-    @params = {:foo => "bar"}
+    @params = {foo: "bar"}
   end
 end
 
 class Name
-  delegate :upcase, :to => :@full_name
+  delegate :upcase, to: :@full_name
 
   def initialize(first, last)
     @full_name = "#{first} #{last}"
@@ -132,8 +132,8 @@ end
 class SideEffect
   attr_reader :ints
 
-  delegate :to_i, :to => :shift, :allow_nil => true
-  delegate :to_s, :to => :shift
+  delegate :to_i, to: :shift, allow_nil: true
+  delegate :to_s, to: :shift
 
   def initialize
     @ints = [1, 2, 3]
@@ -189,7 +189,7 @@ class ModuleTest < ActiveSupport::TestCase
       Name.send :delegate, :nowhere
     end
     assert_raise(ArgumentError) do
-      Name.send :delegate, :noplace, :tos => :hollywood
+      Name.send :delegate, :noplace, tos: :hollywood
     end
   end
 
@@ -233,7 +233,7 @@ class ModuleTest < ActiveSupport::TestCase
         def initialize(client)
           @client = client
         end
-        delegate :name, :address, :to => :@client, :prefix => true
+        delegate :name, :address, to: :@client, prefix: true
       end
     end
   end
@@ -261,7 +261,7 @@ class ModuleTest < ActiveSupport::TestCase
 
   def test_delegation_with_allow_nil_and_nil_value_and_prefix
     Project.class_eval do
-      delegate :name, :to => :person, :allow_nil => true, :prefix => true
+      delegate :name, to: :person, allow_nil: true, prefix: true
     end
     rails = Project.new("Rails")
     assert_nil rails.person_name
@@ -290,7 +290,7 @@ class ModuleTest < ActiveSupport::TestCase
     assert_nothing_raised do
       Class.new(parent) do
         class << self
-          delegate :parent_method, :to => :superclass
+          delegate :parent_method, to: :superclass
         end
       end
     end
diff --git a/activesupport/test/core_ext/numeric_ext_test.rb b/activesupport/test/core_ext/numeric_ext_test.rb
index 793f34897c..fc93a18ab1 100644
--- a/activesupport/test/core_ext/numeric_ext_test.rb
+++ b/activesupport/test/core_ext/numeric_ext_test.rb
@@ -23,41 +23,41 @@ class NumericExtTimeAndDateTimeTest < ActiveSupport::TestCase
   end
 
   def test_irregular_durations
-    assert_equal @now.advance(:days => 3000), 3000.days.since(@now)
-    assert_equal @now.advance(:months => 1), 1.month.since(@now)
-    assert_equal @now.advance(:months => -1), 1.month.until(@now)
-    assert_equal @now.advance(:years => 20), 20.years.since(@now)
-    assert_equal @dtnow.advance(:days => 3000), 3000.days.since(@dtnow)
-    assert_equal @dtnow.advance(:months => 1), 1.month.since(@dtnow)
-    assert_equal @dtnow.advance(:months => -1), 1.month.until(@dtnow)
-    assert_equal @dtnow.advance(:years => 20), 20.years.since(@dtnow)
+    assert_equal @now.advance(days: 3000), 3000.days.since(@now)
+    assert_equal @now.advance(months: 1), 1.month.since(@now)
+    assert_equal @now.advance(months: -1), 1.month.until(@now)
+    assert_equal @now.advance(years: 20), 20.years.since(@now)
+    assert_equal @dtnow.advance(days: 3000), 3000.days.since(@dtnow)
+    assert_equal @dtnow.advance(months: 1), 1.month.since(@dtnow)
+    assert_equal @dtnow.advance(months: -1), 1.month.until(@dtnow)
+    assert_equal @dtnow.advance(years: 20), 20.years.since(@dtnow)
   end
 
   def test_duration_addition
-    assert_equal @now.advance(:days => 1).advance(:months => 1), (1.day + 1.month).since(@now)
-    assert_equal @now.advance(:days => 7), (1.week + 5.seconds - 5.seconds).since(@now)
-    assert_equal @now.advance(:years => 2), (4.years - 2.years).since(@now)
-    assert_equal @dtnow.advance(:days => 1).advance(:months => 1), (1.day + 1.month).since(@dtnow)
-    assert_equal @dtnow.advance(:days => 7), (1.week + 5.seconds - 5.seconds).since(@dtnow)
-    assert_equal @dtnow.advance(:years => 2), (4.years - 2.years).since(@dtnow)
+    assert_equal @now.advance(days: 1).advance(months: 1), (1.day + 1.month).since(@now)
+    assert_equal @now.advance(days: 7), (1.week + 5.seconds - 5.seconds).since(@now)
+    assert_equal @now.advance(years: 2), (4.years - 2.years).since(@now)
+    assert_equal @dtnow.advance(days: 1).advance(months: 1), (1.day + 1.month).since(@dtnow)
+    assert_equal @dtnow.advance(days: 7), (1.week + 5.seconds - 5.seconds).since(@dtnow)
+    assert_equal @dtnow.advance(years: 2), (4.years - 2.years).since(@dtnow)
   end
 
   def test_time_plus_duration
     assert_equal @now + 8, @now + 8.seconds
     assert_equal @now + 22.9, @now + 22.9.seconds
-    assert_equal @now.advance(:days => 15), @now + 15.days
-    assert_equal @now.advance(:months => 1), @now + 1.month
+    assert_equal @now.advance(days: 15), @now + 15.days
+    assert_equal @now.advance(months: 1), @now + 1.month
     assert_equal @dtnow.since(8), @dtnow + 8.seconds
     assert_equal @dtnow.since(22.9), @dtnow + 22.9.seconds
-    assert_equal @dtnow.advance(:days => 15), @dtnow + 15.days
-    assert_equal @dtnow.advance(:months => 1), @dtnow + 1.month
+    assert_equal @dtnow.advance(days: 15), @dtnow + 15.days
+    assert_equal @dtnow.advance(months: 1), @dtnow + 1.month
   end
 
   def test_chaining_duration_operations
-    assert_equal @now.advance(:days => 2).advance(:months => -3), @now + 2.days - 3.months
-    assert_equal @now.advance(:days => 1).advance(:months => 2), @now + 1.day + 2.months
-    assert_equal @dtnow.advance(:days => 2).advance(:months => -3), @dtnow + 2.days - 3.months
-    assert_equal @dtnow.advance(:days => 1).advance(:months => 2), @dtnow + 1.day + 2.months
+    assert_equal @now.advance(days: 2).advance(months: -3), @now + 2.days - 3.months
+    assert_equal @now.advance(days: 1).advance(months: 2), @now + 1.day + 2.months
+    assert_equal @dtnow.advance(days: 2).advance(months: -3), @dtnow + 2.days - 3.months
+    assert_equal @dtnow.advance(days: 1).advance(months: 2), @dtnow + 1.day + 2.months
   end
 
   def test_duration_after_conversion_is_no_longer_accurate
@@ -87,8 +87,8 @@ class NumericExtDateTest < ActiveSupport::TestCase
   end
 
   def test_chaining_duration_operations
-    assert_equal @today.advance(:days => 2).advance(:months => -3), @today + 2.days - 3.months
-    assert_equal @today.advance(:days => 1).advance(:months => 2), @today + 1.day + 2.months
+    assert_equal @today.advance(days: 2).advance(months: -3), @today + 2.days - 3.months
+    assert_equal @today.advance(days: 1).advance(months: 2), @today + 1.day + 2.months
   end
 
   def test_add_one_year_to_leap_day
@@ -154,53 +154,53 @@ class NumericExtFormattingTest < ActiveSupport::TestCase
   def test_to_s__phone
     assert_equal("555-1234", 5551234.to_s(:phone))
     assert_equal("800-555-1212", 8005551212.to_s(:phone))
-    assert_equal("(800) 555-1212", 8005551212.to_s(:phone, :area_code => true))
-    assert_equal("800 555 1212", 8005551212.to_s(:phone, :delimiter => " "))
-    assert_equal("(800) 555-1212 x 123", 8005551212.to_s(:phone, :area_code => true, :extension => 123))
-    assert_equal("800-555-1212", 8005551212.to_s(:phone, :extension => "  "))
-    assert_equal("555.1212", 5551212.to_s(:phone, :delimiter => "."))
-    assert_equal("+1-800-555-1212", 8005551212.to_s(:phone, :country_code => 1))
-    assert_equal("+18005551212", 8005551212.to_s(:phone, :country_code => 1, :delimiter => ""))
+    assert_equal("(800) 555-1212", 8005551212.to_s(:phone, area_code: true))
+    assert_equal("800 555 1212", 8005551212.to_s(:phone, delimiter: " "))
+    assert_equal("(800) 555-1212 x 123", 8005551212.to_s(:phone, area_code: true, extension: 123))
+    assert_equal("800-555-1212", 8005551212.to_s(:phone, extension: "  "))
+    assert_equal("555.1212", 5551212.to_s(:phone, delimiter: "."))
+    assert_equal("+1-800-555-1212", 8005551212.to_s(:phone, country_code: 1))
+    assert_equal("+18005551212", 8005551212.to_s(:phone, country_code: 1, delimiter: ""))
     assert_equal("22-555-1212", 225551212.to_s(:phone))
-    assert_equal("+45-22-555-1212", 225551212.to_s(:phone, :country_code => 45))
+    assert_equal("+45-22-555-1212", 225551212.to_s(:phone, country_code: 45))
   end
 
   def test_to_s__currency
     assert_equal("$1,234,567,890.50", 1234567890.50.to_s(:currency))
     assert_equal("$1,234,567,890.51", 1234567890.506.to_s(:currency))
     assert_equal("-$1,234,567,890.50", -1234567890.50.to_s(:currency))
-    assert_equal("-$ 1,234,567,890.50", -1234567890.50.to_s(:currency, :format => "%u %n"))
-    assert_equal("($1,234,567,890.50)", -1234567890.50.to_s(:currency, :negative_format => "(%u%n)"))
-    assert_equal("$1,234,567,892", 1234567891.50.to_s(:currency, :precision => 0))
-    assert_equal("$1,234,567,890.5", 1234567890.50.to_s(:currency, :precision => 1))
-    assert_equal("&pound;1234567890,50", 1234567890.50.to_s(:currency, :unit => "&pound;", :separator => ",", :delimiter => ""))
+    assert_equal("-$ 1,234,567,890.50", -1234567890.50.to_s(:currency, format: "%u %n"))
+    assert_equal("($1,234,567,890.50)", -1234567890.50.to_s(:currency, negative_format: "(%u%n)"))
+    assert_equal("$1,234,567,892", 1234567891.50.to_s(:currency, precision: 0))
+    assert_equal("$1,234,567,890.5", 1234567890.50.to_s(:currency, precision: 1))
+    assert_equal("&pound;1234567890,50", 1234567890.50.to_s(:currency, unit: "&pound;", separator: ",", delimiter: ""))
   end
 
 
   def test_to_s__rounded
     assert_equal("-111.235", -111.2346.to_s(:rounded))
     assert_equal("111.235", 111.2346.to_s(:rounded))
-    assert_equal("31.83", 31.825.to_s(:rounded, :precision => 2))
-    assert_equal("111.23", 111.2346.to_s(:rounded, :precision => 2))
-    assert_equal("111.00", 111.to_s(:rounded, :precision => 2))
-    assert_equal("3268", (32.6751 * 100.00).to_s(:rounded, :precision => 0))
-    assert_equal("112", 111.50.to_s(:rounded, :precision => 0))
-    assert_equal("1234567892", 1234567891.50.to_s(:rounded, :precision => 0))
-    assert_equal("0", 0.to_s(:rounded, :precision => 0))
-    assert_equal("0.00100", 0.001.to_s(:rounded, :precision => 5))
-    assert_equal("0.001", 0.00111.to_s(:rounded, :precision => 3))
-    assert_equal("10.00", 9.995.to_s(:rounded, :precision => 2))
-    assert_equal("11.00", 10.995.to_s(:rounded, :precision => 2))
-    assert_equal("0.00", -0.001.to_s(:rounded, :precision => 2))
+    assert_equal("31.83", 31.825.to_s(:rounded, precision: 2))
+    assert_equal("111.23", 111.2346.to_s(:rounded, precision: 2))
+    assert_equal("111.00", 111.to_s(:rounded, precision: 2))
+    assert_equal("3268", (32.6751 * 100.00).to_s(:rounded, precision: 0))
+    assert_equal("112", 111.50.to_s(:rounded, precision: 0))
+    assert_equal("1234567892", 1234567891.50.to_s(:rounded, precision: 0))
+    assert_equal("0", 0.to_s(:rounded, precision: 0))
+    assert_equal("0.00100", 0.001.to_s(:rounded, precision: 5))
+    assert_equal("0.001", 0.00111.to_s(:rounded, precision: 3))
+    assert_equal("10.00", 9.995.to_s(:rounded, precision: 2))
+    assert_equal("11.00", 10.995.to_s(:rounded, precision: 2))
+    assert_equal("0.00", -0.001.to_s(:rounded, precision: 2))
   end
 
   def test_to_s__percentage
     assert_equal("100.000%", 100.to_s(:percentage))
-    assert_equal("100%", 100.to_s(:percentage, :precision => 0))
-    assert_equal("302.06%", 302.0574.to_s(:percentage, :precision => 2))
-    assert_equal("123.4%", 123.400.to_s(:percentage, :precision => 3, :strip_insignificant_zeros => true))
-    assert_equal("1.000,000%", 1000.to_s(:percentage, :delimiter => ".", :separator => ","))
-    assert_equal("1000.000  %", 1000.to_s(:percentage, :format => "%n  %"))
+    assert_equal("100%", 100.to_s(:percentage, precision: 0))
+    assert_equal("302.06%", 302.0574.to_s(:percentage, precision: 2))
+    assert_equal("123.4%", 123.400.to_s(:percentage, precision: 3, strip_insignificant_zeros: true))
+    assert_equal("1.000,000%", 1000.to_s(:percentage, delimiter: ".", separator: ","))
+    assert_equal("1000.000  %", 1000.to_s(:percentage, format: "%n  %"))
   end
 
   def test_to_s__delimited
@@ -216,51 +216,51 @@ class NumericExtFormattingTest < ActiveSupport::TestCase
   end
 
   def test_to_s__delimited__with_options_hash
-    assert_equal "12 345 678", 12345678.to_s(:delimited, :delimiter => " ")
-    assert_equal "12,345,678-05", 12345678.05.to_s(:delimited, :separator => "-")
-    assert_equal "12.345.678,05", 12345678.05.to_s(:delimited, :separator => ",", :delimiter => ".")
-    assert_equal "12.345.678,05", 12345678.05.to_s(:delimited, :delimiter => ".", :separator => ",")
+    assert_equal "12 345 678", 12345678.to_s(:delimited, delimiter: " ")
+    assert_equal "12,345,678-05", 12345678.05.to_s(:delimited, separator: "-")
+    assert_equal "12.345.678,05", 12345678.05.to_s(:delimited, separator: ",", delimiter: ".")
+    assert_equal "12.345.678,05", 12345678.05.to_s(:delimited, delimiter: ".", separator: ",")
   end
 
 
   def test_to_s__rounded_with_custom_delimiter_and_separator
-    assert_equal "31,83",       31.825.to_s(:rounded, :precision => 2, :separator => ",")
-    assert_equal "1.231,83",    1231.825.to_s(:rounded, :precision => 2, :separator => ",", :delimiter => ".")
+    assert_equal "31,83",       31.825.to_s(:rounded, precision: 2, separator: ",")
+    assert_equal "1.231,83",    1231.825.to_s(:rounded, precision: 2, separator: ",", delimiter: ".")
   end
 
   def test_to_s__rounded__with_significant_digits
-    assert_equal "124000", 123987.to_s(:rounded, :precision => 3, :significant => true)
-    assert_equal "120000000", 123987876.to_s(:rounded, :precision => 2, :significant => true )
-    assert_equal "9775", 9775.to_s(:rounded, :precision => 4, :significant => true )
-    assert_equal "5.4", 5.3923.to_s(:rounded, :precision => 2, :significant => true )
-    assert_equal "5", 5.3923.to_s(:rounded, :precision => 1, :significant => true )
-    assert_equal "1", 1.232.to_s(:rounded, :precision => 1, :significant => true )
-    assert_equal "7", 7.to_s(:rounded, :precision => 1, :significant => true )
-    assert_equal "1", 1.to_s(:rounded, :precision => 1, :significant => true )
-    assert_equal "53", 52.7923.to_s(:rounded, :precision => 2, :significant => true )
-    assert_equal "9775.00", 9775.to_s(:rounded, :precision => 6, :significant => true )
-    assert_equal "5.392900", 5.3929.to_s(:rounded, :precision => 7, :significant => true )
-    assert_equal "0.0", 0.to_s(:rounded, :precision => 2, :significant => true )
-    assert_equal "0", 0.to_s(:rounded, :precision => 1, :significant => true )
-    assert_equal "0.0001", 0.0001.to_s(:rounded, :precision => 1, :significant => true )
-    assert_equal "0.000100", 0.0001.to_s(:rounded, :precision => 3, :significant => true )
-    assert_equal "0.0001", 0.0001111.to_s(:rounded, :precision => 1, :significant => true )
-    assert_equal "10.0", 9.995.to_s(:rounded, :precision => 3, :significant => true)
-    assert_equal "9.99", 9.994.to_s(:rounded, :precision => 3, :significant => true)
-    assert_equal "11.0", 10.995.to_s(:rounded, :precision => 3, :significant => true)
+    assert_equal "124000", 123987.to_s(:rounded, precision: 3, significant: true)
+    assert_equal "120000000", 123987876.to_s(:rounded, precision: 2, significant: true )
+    assert_equal "9775", 9775.to_s(:rounded, precision: 4, significant: true )
+    assert_equal "5.4", 5.3923.to_s(:rounded, precision: 2, significant: true )
+    assert_equal "5", 5.3923.to_s(:rounded, precision: 1, significant: true )
+    assert_equal "1", 1.232.to_s(:rounded, precision: 1, significant: true )
+    assert_equal "7", 7.to_s(:rounded, precision: 1, significant: true )
+    assert_equal "1", 1.to_s(:rounded, precision: 1, significant: true )
+    assert_equal "53", 52.7923.to_s(:rounded, precision: 2, significant: true )
+    assert_equal "9775.00", 9775.to_s(:rounded, precision: 6, significant: true )
+    assert_equal "5.392900", 5.3929.to_s(:rounded, precision: 7, significant: true )
+    assert_equal "0.0", 0.to_s(:rounded, precision: 2, significant: true )
+    assert_equal "0", 0.to_s(:rounded, precision: 1, significant: true )
+    assert_equal "0.0001", 0.0001.to_s(:rounded, precision: 1, significant: true )
+    assert_equal "0.000100", 0.0001.to_s(:rounded, precision: 3, significant: true )
+    assert_equal "0.0001", 0.0001111.to_s(:rounded, precision: 1, significant: true )
+    assert_equal "10.0", 9.995.to_s(:rounded, precision: 3, significant: true)
+    assert_equal "9.99", 9.994.to_s(:rounded, precision: 3, significant: true)
+    assert_equal "11.0", 10.995.to_s(:rounded, precision: 3, significant: true)
   end
 
   def test_to_s__rounded__with_strip_insignificant_zeros
-    assert_equal "9775.43", 9775.43.to_s(:rounded, :precision => 4, :strip_insignificant_zeros => true )
-    assert_equal "9775.2", 9775.2.to_s(:rounded, :precision => 6, :significant => true, :strip_insignificant_zeros => true )
-    assert_equal "0", 0.to_s(:rounded, :precision => 6, :significant => true, :strip_insignificant_zeros => true )
+    assert_equal "9775.43", 9775.43.to_s(:rounded, precision: 4, strip_insignificant_zeros: true )
+    assert_equal "9775.2", 9775.2.to_s(:rounded, precision: 6, significant: true, strip_insignificant_zeros: true )
+    assert_equal "0", 0.to_s(:rounded, precision: 6, significant: true, strip_insignificant_zeros: true )
   end
 
   def test_to_s__rounded__with_significant_true_and_zero_precision
     # Zero precision with significant is a mistake (would always return zero),
     # so we treat it as if significant was false (increases backwards compatibility for number_to_human_size)
-    assert_equal "124", 123.987.to_s(:rounded, :precision => 0, :significant => true)
-    assert_equal "12", 12.to_s(:rounded, :precision => 0, :significant => true )
+    assert_equal "124", 123.987.to_s(:rounded, precision: 0, significant: true)
+    assert_equal "12", 12.to_s(:rounded, precision: 0, significant: true )
   end
 
   def test_to_s__human_size
@@ -280,50 +280,50 @@ class NumericExtFormattingTest < ActiveSupport::TestCase
     assert_equal "444 KB",    kilobytes(444).to_s(:human_size)
     assert_equal "1020 MB",   megabytes(1023).to_s(:human_size)
     assert_equal "3 TB",      terabytes(3).to_s(:human_size)
-    assert_equal "1.2 MB",    1234567.to_s(:human_size, :precision => 2)
-    assert_equal "3 Bytes",   3.14159265.to_s(:human_size, :precision => 4)
-    assert_equal "1 KB",      kilobytes(1.0123).to_s(:human_size, :precision => 2)
-    assert_equal "1.01 KB",   kilobytes(1.0100).to_s(:human_size, :precision => 4)
-    assert_equal "10 KB",     kilobytes(10.000).to_s(:human_size, :precision => 4)
+    assert_equal "1.2 MB",    1234567.to_s(:human_size, precision: 2)
+    assert_equal "3 Bytes",   3.14159265.to_s(:human_size, precision: 4)
+    assert_equal "1 KB",      kilobytes(1.0123).to_s(:human_size, precision: 2)
+    assert_equal "1.01 KB",   kilobytes(1.0100).to_s(:human_size, precision: 4)
+    assert_equal "10 KB",     kilobytes(10.000).to_s(:human_size, precision: 4)
     assert_equal "1 Byte",    1.1.to_s(:human_size)
     assert_equal "10 Bytes",  10.to_s(:human_size)
   end
 
   def test_to_s__human_size_with_si_prefix
     assert_deprecated do
-      assert_equal "3 Bytes",    3.14159265.to_s(:human_size, :prefix => :si)
-      assert_equal "123 Bytes",  123.0.to_s(:human_size, :prefix => :si)
-      assert_equal "123 Bytes",  123.to_s(:human_size, :prefix => :si)
-      assert_equal "1.23 KB",    1234.to_s(:human_size, :prefix => :si)
-      assert_equal "12.3 KB",    12345.to_s(:human_size, :prefix => :si)
-      assert_equal "1.23 MB",    1234567.to_s(:human_size, :prefix => :si)
-      assert_equal "1.23 GB",    1234567890.to_s(:human_size, :prefix => :si)
-      assert_equal "1.23 TB",    1234567890123.to_s(:human_size, :prefix => :si)
-      assert_equal "1.23 PB",    1234567890123456.to_s(:human_size, :prefix => :si)
-      assert_equal "1.23 EB",    1234567890123456789.to_s(:human_size, :prefix => :si)
+      assert_equal "3 Bytes",    3.14159265.to_s(:human_size, prefix: :si)
+      assert_equal "123 Bytes",  123.0.to_s(:human_size, prefix: :si)
+      assert_equal "123 Bytes",  123.to_s(:human_size, prefix: :si)
+      assert_equal "1.23 KB",    1234.to_s(:human_size, prefix: :si)
+      assert_equal "12.3 KB",    12345.to_s(:human_size, prefix: :si)
+      assert_equal "1.23 MB",    1234567.to_s(:human_size, prefix: :si)
+      assert_equal "1.23 GB",    1234567890.to_s(:human_size, prefix: :si)
+      assert_equal "1.23 TB",    1234567890123.to_s(:human_size, prefix: :si)
+      assert_equal "1.23 PB",    1234567890123456.to_s(:human_size, prefix: :si)
+      assert_equal "1.23 EB",    1234567890123456789.to_s(:human_size, prefix: :si)
     end
   end
 
   def test_to_s__human_size_with_options_hash
-    assert_equal "1.2 MB",   1234567.to_s(:human_size, :precision => 2)
-    assert_equal "3 Bytes",  3.14159265.to_s(:human_size, :precision => 4)
-    assert_equal "1 KB",     kilobytes(1.0123).to_s(:human_size, :precision => 2)
-    assert_equal "1.01 KB",  kilobytes(1.0100).to_s(:human_size, :precision => 4)
-    assert_equal "10 KB",    kilobytes(10.000).to_s(:human_size, :precision => 4)
-    assert_equal "1 TB",     1234567890123.to_s(:human_size, :precision => 1)
-    assert_equal "500 MB",   524288000.to_s(:human_size, :precision=>3)
-    assert_equal "10 MB",    9961472.to_s(:human_size, :precision=>0)
-    assert_equal "40 KB",    41010.to_s(:human_size, :precision => 1)
-    assert_equal "40 KB",    41100.to_s(:human_size, :precision => 2)
-    assert_equal "1.0 KB",   kilobytes(1.0123).to_s(:human_size, :precision => 2, :strip_insignificant_zeros => false)
-    assert_equal "1.012 KB", kilobytes(1.0123).to_s(:human_size, :precision => 3, :significant => false)
-    assert_equal "1 KB",     kilobytes(1.0123).to_s(:human_size, :precision => 0, :significant => true) #ignores significant it precision is 0
+    assert_equal "1.2 MB",   1234567.to_s(:human_size, precision: 2)
+    assert_equal "3 Bytes",  3.14159265.to_s(:human_size, precision: 4)
+    assert_equal "1 KB",     kilobytes(1.0123).to_s(:human_size, precision: 2)
+    assert_equal "1.01 KB",  kilobytes(1.0100).to_s(:human_size, precision: 4)
+    assert_equal "10 KB",    kilobytes(10.000).to_s(:human_size, precision: 4)
+    assert_equal "1 TB",     1234567890123.to_s(:human_size, precision: 1)
+    assert_equal "500 MB",   524288000.to_s(:human_size, precision: 3)
+    assert_equal "10 MB",    9961472.to_s(:human_size, precision: 0)
+    assert_equal "40 KB",    41010.to_s(:human_size, precision: 1)
+    assert_equal "40 KB",    41100.to_s(:human_size, precision: 2)
+    assert_equal "1.0 KB",   kilobytes(1.0123).to_s(:human_size, precision: 2, strip_insignificant_zeros: false)
+    assert_equal "1.012 KB", kilobytes(1.0123).to_s(:human_size, precision: 3, significant: false)
+    assert_equal "1 KB",     kilobytes(1.0123).to_s(:human_size, precision: 0, significant: true) #ignores significant it precision is 0
   end
 
   def test_to_s__human_size_with_custom_delimiter_and_separator
-    assert_equal "1,01 KB",     kilobytes(1.0123).to_s(:human_size, :precision => 3, :separator => ",")
-    assert_equal "1,01 KB",     kilobytes(1.0100).to_s(:human_size, :precision => 4, :separator => ",")
-    assert_equal "1.000,1 TB",  terabytes(1000.1).to_s(:human_size, :precision => 5, :delimiter => ".", :separator => ",")
+    assert_equal "1,01 KB",     kilobytes(1.0123).to_s(:human_size, precision: 3, separator: ",")
+    assert_equal "1,01 KB",     kilobytes(1.0100).to_s(:human_size, precision: 4, separator: ",")
+    assert_equal "1.000,1 TB",  terabytes(1000.1).to_s(:human_size, precision: 5, delimiter: ".", separator: ",")
   end
 
   def test_number_to_human
@@ -339,51 +339,51 @@ class NumericExtFormattingTest < ActiveSupport::TestCase
     assert_equal "1.23 Trillion", 1234567890123.to_s(:human)
     assert_equal "1.23 Quadrillion", 1234567890123456.to_s(:human)
     assert_equal "1230 Quadrillion", 1234567890123456789.to_s(:human)
-    assert_equal "490 Thousand", 489939.to_s(:human, :precision => 2)
-    assert_equal "489.9 Thousand", 489939.to_s(:human, :precision => 4)
-    assert_equal "489 Thousand", 489000.to_s(:human, :precision => 4)
-    assert_equal "489.0 Thousand", 489000.to_s(:human, :precision => 4, :strip_insignificant_zeros => false)
-    assert_equal "1.2346 Million", 1234567.to_s(:human, :precision => 4, :significant => false)
-    assert_equal "1,2 Million", 1234567.to_s(:human, :precision => 1, :significant => false, :separator => ",")
-    assert_equal "1 Million", 1234567.to_s(:human, :precision => 0, :significant => true, :separator => ",") #significant forced to false
+    assert_equal "490 Thousand", 489939.to_s(:human, precision: 2)
+    assert_equal "489.9 Thousand", 489939.to_s(:human, precision: 4)
+    assert_equal "489 Thousand", 489000.to_s(:human, precision: 4)
+    assert_equal "489.0 Thousand", 489000.to_s(:human, precision: 4, strip_insignificant_zeros: false)
+    assert_equal "1.2346 Million", 1234567.to_s(:human, precision: 4, significant: false)
+    assert_equal "1,2 Million", 1234567.to_s(:human, precision: 1, significant: false, separator: ",")
+    assert_equal "1 Million", 1234567.to_s(:human, precision: 0, significant: true, separator: ",") #significant forced to false
   end
 
   def test_number_to_human_with_custom_units
     #Only integers
-    volume = {:unit => "ml", :thousand => "lt", :million => "m3"}
-    assert_equal "123 lt", 123456.to_s(:human, :units => volume)
-    assert_equal "12 ml", 12.to_s(:human, :units => volume)
-    assert_equal "1.23 m3", 1234567.to_s(:human, :units => volume)
+    volume = {unit: "ml", thousand: "lt", million: "m3"}
+    assert_equal "123 lt", 123456.to_s(:human, units: volume)
+    assert_equal "12 ml", 12.to_s(:human, units: volume)
+    assert_equal "1.23 m3", 1234567.to_s(:human, units: volume)
 
     #Including fractionals
-    distance = {:mili => "mm", :centi => "cm", :deci => "dm", :unit => "m", :ten => "dam", :hundred => "hm", :thousand => "km"}
-    assert_equal "1.23 mm", 0.00123.to_s(:human, :units => distance)
-    assert_equal "1.23 cm", 0.0123.to_s(:human, :units => distance)
-    assert_equal "1.23 dm", 0.123.to_s(:human, :units => distance)
-    assert_equal "1.23 m",  1.23.to_s(:human, :units => distance)
-    assert_equal "1.23 dam", 12.3.to_s(:human, :units => distance)
-    assert_equal "1.23 hm", 123.to_s(:human, :units => distance)
-    assert_equal "1.23 km", 1230.to_s(:human, :units => distance)
-    assert_equal "1.23 km", 1230.to_s(:human, :units => distance)
-    assert_equal "1.23 km", 1230.to_s(:human, :units => distance)
-    assert_equal "12.3 km", 12300.to_s(:human, :units => distance)
+    distance = {mili: "mm", centi: "cm", deci: "dm", unit: "m", ten: "dam", hundred: "hm", thousand: "km"}
+    assert_equal "1.23 mm", 0.00123.to_s(:human, units: distance)
+    assert_equal "1.23 cm", 0.0123.to_s(:human, units: distance)
+    assert_equal "1.23 dm", 0.123.to_s(:human, units: distance)
+    assert_equal "1.23 m",  1.23.to_s(:human, units: distance)
+    assert_equal "1.23 dam", 12.3.to_s(:human, units: distance)
+    assert_equal "1.23 hm", 123.to_s(:human, units: distance)
+    assert_equal "1.23 km", 1230.to_s(:human, units: distance)
+    assert_equal "1.23 km", 1230.to_s(:human, units: distance)
+    assert_equal "1.23 km", 1230.to_s(:human, units: distance)
+    assert_equal "12.3 km", 12300.to_s(:human, units: distance)
 
     #The quantifiers don't need to be a continuous sequence
-    gangster = {:hundred => "hundred bucks", :million => "thousand quids"}
-    assert_equal "1 hundred bucks", 100.to_s(:human, :units => gangster)
-    assert_equal "25 hundred bucks", 2500.to_s(:human, :units => gangster)
-    assert_equal "25 thousand quids", 25000000.to_s(:human, :units => gangster)
-    assert_equal "12300 thousand quids", 12345000000.to_s(:human, :units => gangster)
+    gangster = {hundred: "hundred bucks", million: "thousand quids"}
+    assert_equal "1 hundred bucks", 100.to_s(:human, units: gangster)
+    assert_equal "25 hundred bucks", 2500.to_s(:human, units: gangster)
+    assert_equal "25 thousand quids", 25000000.to_s(:human, units: gangster)
+    assert_equal "12300 thousand quids", 12345000000.to_s(:human, units: gangster)
 
     #Spaces are stripped from the resulting string
-    assert_equal "4", 4.to_s(:human, :units => {:unit => "", :ten => "tens "})
-    assert_equal "4.5  tens", 45.to_s(:human, :units => {:unit => "", :ten => " tens   "})
+    assert_equal "4", 4.to_s(:human, units: {unit: "", ten: "tens "})
+    assert_equal "4.5  tens", 45.to_s(:human, units: {unit: "", ten: " tens   "})
   end
 
   def test_number_to_human_with_custom_format
-    assert_equal "123 times Thousand", 123456.to_s(:human, :format => "%n times %u")
-    volume = {:unit => "ml", :thousand => "lt", :million => "m3"}
-    assert_equal "123.lt", 123456.to_s(:human, :units => volume, :format => "%n.%u")
+    assert_equal "123 times Thousand", 123456.to_s(:human, format: "%n times %u")
+    volume = {unit: "ml", thousand: "lt", million: "m3"}
+    assert_equal "123.lt", 123456.to_s(:human, units: volume, format: "%n.%u")
   end
 
   def test_to_s__injected_on_proper_types
diff --git a/activesupport/test/core_ext/object/deep_dup_test.rb b/activesupport/test/core_ext/object/deep_dup_test.rb
index 38981f0497..2c0526eebf 100644
--- a/activesupport/test/core_ext/object/deep_dup_test.rb
+++ b/activesupport/test/core_ext/object/deep_dup_test.rb
@@ -12,7 +12,7 @@ class DeepDupTest < ActiveSupport::TestCase
   end
 
   def test_hash_deep_dup
-    hash = { :a => { :b => "b" } }
+    hash = { a: { b: "b" } }
     dup = hash.deep_dup
     dup[:a][:c] = "c"
     assert_equal nil, hash[:a][:c]
@@ -20,7 +20,7 @@ class DeepDupTest < ActiveSupport::TestCase
   end
 
   def test_array_deep_dup_with_hash_inside
-    array = [1, { :a => 2, :b => 3 } ]
+    array = [1, { a: 2, b: 3 } ]
     dup = array.deep_dup
     dup[1][:c] = 4
     assert_equal nil, array[1][:c]
@@ -28,7 +28,7 @@ class DeepDupTest < ActiveSupport::TestCase
   end
 
   def test_hash_deep_dup_with_array_inside
-    hash = { :a => [1, 2] }
+    hash = { a: [1, 2] }
     dup = hash.deep_dup
     dup[:a][2] = "c"
     assert_equal nil, hash[:a][2]
@@ -37,7 +37,7 @@ class DeepDupTest < ActiveSupport::TestCase
 
   def test_deep_dup_initialize
     zero_hash = Hash.new 0
-    hash = { :a => zero_hash }
+    hash = { a: zero_hash }
     dup = hash.deep_dup
     assert_equal 0, dup[:a][44]
   end
diff --git a/activesupport/test/core_ext/object/to_query_test.rb b/activesupport/test/core_ext/object/to_query_test.rb
index 42566d5374..aaa7e69acb 100644
--- a/activesupport/test/core_ext/object/to_query_test.rb
+++ b/activesupport/test/core_ext/object/to_query_test.rb
@@ -5,7 +5,7 @@ require "active_support/core_ext/string/output_safety"
 
 class ToQueryTest < ActiveSupport::TestCase
   def test_simple_conversion
-    assert_query_equal "a=10", :a => 10
+    assert_query_equal "a=10", a: 10
   end
 
   def test_cgi_escaping
@@ -28,22 +28,22 @@ class ToQueryTest < ActiveSupport::TestCase
 
   def test_nested_conversion
     assert_query_equal "person%5Blogin%5D=seckar&person%5Bname%5D=Nicholas",
-      :person => Hash[:login, "seckar", :name, "Nicholas"]
+      person: Hash[:login, "seckar", :name, "Nicholas"]
   end
 
   def test_multiple_nested
     assert_query_equal "account%5Bperson%5D%5Bid%5D=20&person%5Bid%5D=10",
-      Hash[:account, {:person => {:id => 20}}, :person, {:id => 10}]
+      Hash[:account, {person: {id: 20}}, :person, {id: 10}]
   end
 
   def test_array_values
     assert_query_equal "person%5Bid%5D%5B%5D=10&person%5Bid%5D%5B%5D=20",
-      :person => {:id => [10, 20]}
+      person: {id: [10, 20]}
   end
 
   def test_array_values_are_not_sorted
     assert_query_equal "person%5Bid%5D%5B%5D=20&person%5Bid%5D%5B%5D=10",
-      :person => {:id => [20, 10]}
+      person: {id: [20, 10]}
   end
 
   def test_empty_array
diff --git a/activesupport/test/core_ext/string_ext_test.rb b/activesupport/test/core_ext/string_ext_test.rb
index fceee698fc..4b40503d22 100644
--- a/activesupport/test/core_ext/string_ext_test.rb
+++ b/activesupport/test/core_ext/string_ext_test.rb
@@ -263,16 +263,16 @@ class StringInflectionsTest < ActiveSupport::TestCase
   end
 
   def test_truncate_with_omission_and_separator
-    assert_equal "Hello[...]", "Hello World!".truncate(10, :omission => "[...]")
-    assert_equal "Hello[...]", "Hello Big World!".truncate(13, :omission => "[...]", :separator => " ")
-    assert_equal "Hello Big[...]", "Hello Big World!".truncate(14, :omission => "[...]", :separator => " ")
-    assert_equal "Hello Big[...]", "Hello Big World!".truncate(15, :omission => "[...]", :separator => " ")
+    assert_equal "Hello[...]", "Hello World!".truncate(10, omission: "[...]")
+    assert_equal "Hello[...]", "Hello Big World!".truncate(13, omission: "[...]", separator: " ")
+    assert_equal "Hello Big[...]", "Hello Big World!".truncate(14, omission: "[...]", separator: " ")
+    assert_equal "Hello Big[...]", "Hello Big World!".truncate(15, omission: "[...]", separator: " ")
   end
 
   def test_truncate_with_omission_and_regexp_separator
-    assert_equal "Hello[...]", "Hello Big World!".truncate(13, :omission => "[...]", :separator => /\s/)
-    assert_equal "Hello Big[...]", "Hello Big World!".truncate(14, :omission => "[...]", :separator => /\s/)
-    assert_equal "Hello Big[...]", "Hello Big World!".truncate(15, :omission => "[...]", :separator => /\s/)
+    assert_equal "Hello[...]", "Hello Big World!".truncate(13, omission: "[...]", separator: /\s/)
+    assert_equal "Hello Big[...]", "Hello Big World!".truncate(14, omission: "[...]", separator: /\s/)
+    assert_equal "Hello Big[...]", "Hello Big World!".truncate(15, omission: "[...]", separator: /\s/)
   end
 
   def test_truncate_words
@@ -281,19 +281,19 @@ class StringInflectionsTest < ActiveSupport::TestCase
   end
 
   def test_truncate_words_with_omission
-    assert_equal "Hello Big World!", "Hello Big World!".truncate_words(3, :omission => "[...]")
-    assert_equal "Hello Big[...]", "Hello Big World!".truncate_words(2, :omission => "[...]")
+    assert_equal "Hello Big World!", "Hello Big World!".truncate_words(3, omission: "[...]")
+    assert_equal "Hello Big[...]", "Hello Big World!".truncate_words(2, omission: "[...]")
   end
 
   def test_truncate_words_with_separator
-    assert_equal "Hello<br>Big<br>World!...", "Hello<br>Big<br>World!<br>".truncate_words(3, :separator => "<br>")
-    assert_equal "Hello<br>Big<br>World!", "Hello<br>Big<br>World!".truncate_words(3, :separator => "<br>")
-    assert_equal "Hello\n<br>Big...", "Hello\n<br>Big<br>Wide<br>World!".truncate_words(2, :separator => "<br>")
+    assert_equal "Hello<br>Big<br>World!...", "Hello<br>Big<br>World!<br>".truncate_words(3, separator: "<br>")
+    assert_equal "Hello<br>Big<br>World!", "Hello<br>Big<br>World!".truncate_words(3, separator: "<br>")
+    assert_equal "Hello\n<br>Big...", "Hello\n<br>Big<br>Wide<br>World!".truncate_words(2, separator: "<br>")
   end
 
   def test_truncate_words_with_separator_and_omission
-    assert_equal "Hello<br>Big<br>World![...]", "Hello<br>Big<br>World!<br>".truncate_words(3, :omission => "[...]", :separator => "<br>")
-    assert_equal "Hello<br>Big<br>World!", "Hello<br>Big<br>World!".truncate_words(3, :omission => "[...]", :separator => "<br>")
+    assert_equal "Hello<br>Big<br>World![...]", "Hello<br>Big<br>World!<br>".truncate_words(3, omission: "[...]", separator: "<br>")
+    assert_equal "Hello<br>Big<br>World!", "Hello<br>Big<br>World!".truncate_words(3, omission: "[...]", separator: "<br>")
   end
 
   def test_truncate_words_with_complex_string
@@ -821,7 +821,7 @@ class OutputSafetyTest < ActiveSupport::TestCase
   end
 
   test "emits normal string yaml" do
-    assert_equal "foo".to_yaml, "foo".html_safe.to_yaml(:foo => 1)
+    assert_equal "foo".to_yaml, "foo".html_safe.to_yaml(foo: 1)
   end
 
   test "call to_param returns a normal string" do
diff --git a/activesupport/test/core_ext/time_ext_test.rb b/activesupport/test/core_ext/time_ext_test.rb
index 8fb85e3494..a6c9a7d5a8 100644
--- a/activesupport/test/core_ext/time_ext_test.rb
+++ b/activesupport/test/core_ext/time_ext_test.rb
@@ -393,122 +393,122 @@ class TimeExtCalculationsTest < ActiveSupport::TestCase
   end
 
   def test_change
-    assert_equal Time.local(2006,2,22,15,15,10), Time.local(2005,2,22,15,15,10).change(:year => 2006)
-    assert_equal Time.local(2005,6,22,15,15,10), Time.local(2005,2,22,15,15,10).change(:month => 6)
-    assert_equal Time.local(2012,9,22,15,15,10), Time.local(2005,2,22,15,15,10).change(:year => 2012, :month => 9)
-    assert_equal Time.local(2005,2,22,16),       Time.local(2005,2,22,15,15,10).change(:hour => 16)
-    assert_equal Time.local(2005,2,22,16,45),    Time.local(2005,2,22,15,15,10).change(:hour => 16, :min => 45)
-    assert_equal Time.local(2005,2,22,15,45),    Time.local(2005,2,22,15,15,10).change(:min => 45)
-
-    assert_equal Time.local(2005,1,2, 5, 0, 0, 0), Time.local(2005,1,2,11,22,33,44).change(:hour => 5)
-    assert_equal Time.local(2005,1,2,11, 6, 0, 0), Time.local(2005,1,2,11,22,33,44).change(:min  => 6)
-    assert_equal Time.local(2005,1,2,11,22, 7, 0), Time.local(2005,1,2,11,22,33,44).change(:sec  => 7)
-    assert_equal Time.local(2005,1,2,11,22,33, 8), Time.local(2005,1,2,11,22,33,44).change(:usec => 8)
-    assert_equal Time.local(2005,1,2,11,22,33, 8), Time.local(2005,1,2,11,22,33,2).change(:nsec => 8000)
-    assert_raise(ArgumentError) { Time.local(2005,1,2,11,22,33, 8).change(:usec => 1, :nsec => 1) }
+    assert_equal Time.local(2006,2,22,15,15,10), Time.local(2005,2,22,15,15,10).change(year: 2006)
+    assert_equal Time.local(2005,6,22,15,15,10), Time.local(2005,2,22,15,15,10).change(month: 6)
+    assert_equal Time.local(2012,9,22,15,15,10), Time.local(2005,2,22,15,15,10).change(year: 2012, month: 9)
+    assert_equal Time.local(2005,2,22,16),       Time.local(2005,2,22,15,15,10).change(hour: 16)
+    assert_equal Time.local(2005,2,22,16,45),    Time.local(2005,2,22,15,15,10).change(hour: 16, min: 45)
+    assert_equal Time.local(2005,2,22,15,45),    Time.local(2005,2,22,15,15,10).change(min: 45)
+
+    assert_equal Time.local(2005,1,2, 5, 0, 0, 0), Time.local(2005,1,2,11,22,33,44).change(hour: 5)
+    assert_equal Time.local(2005,1,2,11, 6, 0, 0), Time.local(2005,1,2,11,22,33,44).change(min: 6)
+    assert_equal Time.local(2005,1,2,11,22, 7, 0), Time.local(2005,1,2,11,22,33,44).change(sec: 7)
+    assert_equal Time.local(2005,1,2,11,22,33, 8), Time.local(2005,1,2,11,22,33,44).change(usec: 8)
+    assert_equal Time.local(2005,1,2,11,22,33, 8), Time.local(2005,1,2,11,22,33,2).change(nsec: 8000)
+    assert_raise(ArgumentError) { Time.local(2005,1,2,11,22,33, 8).change(usec: 1, nsec: 1) }
     assert_nothing_raised { Time.new(2015, 5, 9, 10, 00, 00, "+03:00").change(nsec: 999999999) }
   end
 
   def test_utc_change
-    assert_equal Time.utc(2006,2,22,15,15,10), Time.utc(2005,2,22,15,15,10).change(:year => 2006)
-    assert_equal Time.utc(2005,6,22,15,15,10), Time.utc(2005,2,22,15,15,10).change(:month => 6)
-    assert_equal Time.utc(2012,9,22,15,15,10), Time.utc(2005,2,22,15,15,10).change(:year => 2012, :month => 9)
-    assert_equal Time.utc(2005,2,22,16),       Time.utc(2005,2,22,15,15,10).change(:hour => 16)
-    assert_equal Time.utc(2005,2,22,16,45),    Time.utc(2005,2,22,15,15,10).change(:hour => 16, :min => 45)
-    assert_equal Time.utc(2005,2,22,15,45),    Time.utc(2005,2,22,15,15,10).change(:min => 45)
-    assert_equal Time.utc(2005,1,2,11,22,33,8), Time.utc(2005,1,2,11,22,33,2).change(:nsec => 8000)
+    assert_equal Time.utc(2006,2,22,15,15,10), Time.utc(2005,2,22,15,15,10).change(year: 2006)
+    assert_equal Time.utc(2005,6,22,15,15,10), Time.utc(2005,2,22,15,15,10).change(month: 6)
+    assert_equal Time.utc(2012,9,22,15,15,10), Time.utc(2005,2,22,15,15,10).change(year: 2012, month: 9)
+    assert_equal Time.utc(2005,2,22,16),       Time.utc(2005,2,22,15,15,10).change(hour: 16)
+    assert_equal Time.utc(2005,2,22,16,45),    Time.utc(2005,2,22,15,15,10).change(hour: 16, min: 45)
+    assert_equal Time.utc(2005,2,22,15,45),    Time.utc(2005,2,22,15,15,10).change(min: 45)
+    assert_equal Time.utc(2005,1,2,11,22,33,8), Time.utc(2005,1,2,11,22,33,2).change(nsec: 8000)
   end
 
   def test_offset_change
-    assert_equal Time.new(2006,2,22,15,15,10,"-08:00"), Time.new(2005,2,22,15,15,10,"-08:00").change(:year => 2006)
-    assert_equal Time.new(2005,6,22,15,15,10,"-08:00"), Time.new(2005,2,22,15,15,10,"-08:00").change(:month => 6)
-    assert_equal Time.new(2012,9,22,15,15,10,"-08:00"), Time.new(2005,2,22,15,15,10,"-08:00").change(:year => 2012, :month => 9)
-    assert_equal Time.new(2005,2,22,16,0,0,"-08:00"),   Time.new(2005,2,22,15,15,10,"-08:00").change(:hour => 16)
-    assert_equal Time.new(2005,2,22,16,45,0,"-08:00"),  Time.new(2005,2,22,15,15,10,"-08:00").change(:hour => 16, :min => 45)
-    assert_equal Time.new(2005,2,22,15,45,0,"-08:00"),  Time.new(2005,2,22,15,15,10,"-08:00").change(:min => 45)
-    assert_equal Time.new(2005,2,22,15,15,10,"-08:00"),  Time.new(2005,2,22,15,15,0,"-08:00").change(:sec => 10)
-    assert_equal 10, Time.new(2005,2,22,15,15,0,"-08:00").change(:usec => 10).usec
-    assert_equal 10, Time.new(2005,2,22,15,15,0,"-08:00").change(:nsec => 10).nsec
-    assert_raise(ArgumentError) { Time.new(2005, 2, 22, 15, 15, 45, "-08:00").change(:usec => 1000000) }
-    assert_raise(ArgumentError) { Time.new(2005, 2, 22, 15, 15, 45, "-08:00").change(:nsec => 1000000000) }
+    assert_equal Time.new(2006,2,22,15,15,10,"-08:00"), Time.new(2005,2,22,15,15,10,"-08:00").change(year: 2006)
+    assert_equal Time.new(2005,6,22,15,15,10,"-08:00"), Time.new(2005,2,22,15,15,10,"-08:00").change(month: 6)
+    assert_equal Time.new(2012,9,22,15,15,10,"-08:00"), Time.new(2005,2,22,15,15,10,"-08:00").change(year: 2012, month: 9)
+    assert_equal Time.new(2005,2,22,16,0,0,"-08:00"),   Time.new(2005,2,22,15,15,10,"-08:00").change(hour: 16)
+    assert_equal Time.new(2005,2,22,16,45,0,"-08:00"),  Time.new(2005,2,22,15,15,10,"-08:00").change(hour: 16, min: 45)
+    assert_equal Time.new(2005,2,22,15,45,0,"-08:00"),  Time.new(2005,2,22,15,15,10,"-08:00").change(min: 45)
+    assert_equal Time.new(2005,2,22,15,15,10,"-08:00"),  Time.new(2005,2,22,15,15,0,"-08:00").change(sec: 10)
+    assert_equal 10, Time.new(2005,2,22,15,15,0,"-08:00").change(usec: 10).usec
+    assert_equal 10, Time.new(2005,2,22,15,15,0,"-08:00").change(nsec: 10).nsec
+    assert_raise(ArgumentError) { Time.new(2005, 2, 22, 15, 15, 45, "-08:00").change(usec: 1000000) }
+    assert_raise(ArgumentError) { Time.new(2005, 2, 22, 15, 15, 45, "-08:00").change(nsec: 1000000000) }
   end
 
   def test_advance
-    assert_equal Time.local(2006,2,28,15,15,10), Time.local(2005,2,28,15,15,10).advance(:years => 1)
-    assert_equal Time.local(2005,6,28,15,15,10), Time.local(2005,2,28,15,15,10).advance(:months => 4)
-    assert_equal Time.local(2005,3,21,15,15,10), Time.local(2005,2,28,15,15,10).advance(:weeks => 3)
-    assert_equal Time.local(2005,3,25,3,15,10), Time.local(2005,2,28,15,15,10).advance(:weeks => 3.5)
-    assert_in_delta Time.local(2005,3,26,12,51,10), Time.local(2005,2,28,15,15,10).advance(:weeks => 3.7), 1
-    assert_equal Time.local(2005,3,5,15,15,10), Time.local(2005,2,28,15,15,10).advance(:days => 5)
-    assert_equal Time.local(2005,3,6,3,15,10), Time.local(2005,2,28,15,15,10).advance(:days => 5.5)
-    assert_in_delta Time.local(2005,3,6,8,3,10), Time.local(2005,2,28,15,15,10).advance(:days => 5.7), 1
-    assert_equal Time.local(2012,9,28,15,15,10), Time.local(2005,2,28,15,15,10).advance(:years => 7, :months => 7)
-    assert_equal Time.local(2013,10,3,15,15,10), Time.local(2005,2,28,15,15,10).advance(:years => 7, :months => 19, :days => 5)
-    assert_equal Time.local(2013,10,17,15,15,10), Time.local(2005,2,28,15,15,10).advance(:years => 7, :months => 19, :weeks => 2, :days => 5)
-    assert_equal Time.local(2001,12,27,15,15,10), Time.local(2005,2,28,15,15,10).advance(:years => -3, :months => -2, :days => -1)
-    assert_equal Time.local(2005,2,28,15,15,10), Time.local(2004,2,29,15,15,10).advance(:years => 1) #leap day plus one year
-    assert_equal Time.local(2005,2,28,20,15,10), Time.local(2005,2,28,15,15,10).advance(:hours => 5)
-    assert_equal Time.local(2005,2,28,15,22,10), Time.local(2005,2,28,15,15,10).advance(:minutes => 7)
-    assert_equal Time.local(2005,2,28,15,15,19), Time.local(2005,2,28,15,15,10).advance(:seconds => 9)
-    assert_equal Time.local(2005,2,28,20,22,19), Time.local(2005,2,28,15,15,10).advance(:hours => 5, :minutes => 7, :seconds => 9)
-    assert_equal Time.local(2005,2,28,10,8,1), Time.local(2005,2,28,15,15,10).advance(:hours => -5, :minutes => -7, :seconds => -9)
-    assert_equal Time.local(2013,10,17,20,22,19), Time.local(2005,2,28,15,15,10).advance(:years => 7, :months => 19, :weeks => 2, :days => 5, :hours => 5, :minutes => 7, :seconds => 9)
+    assert_equal Time.local(2006,2,28,15,15,10), Time.local(2005,2,28,15,15,10).advance(years: 1)
+    assert_equal Time.local(2005,6,28,15,15,10), Time.local(2005,2,28,15,15,10).advance(months: 4)
+    assert_equal Time.local(2005,3,21,15,15,10), Time.local(2005,2,28,15,15,10).advance(weeks: 3)
+    assert_equal Time.local(2005,3,25,3,15,10), Time.local(2005,2,28,15,15,10).advance(weeks: 3.5)
+    assert_in_delta Time.local(2005,3,26,12,51,10), Time.local(2005,2,28,15,15,10).advance(weeks: 3.7), 1
+    assert_equal Time.local(2005,3,5,15,15,10), Time.local(2005,2,28,15,15,10).advance(days: 5)
+    assert_equal Time.local(2005,3,6,3,15,10), Time.local(2005,2,28,15,15,10).advance(days: 5.5)
+    assert_in_delta Time.local(2005,3,6,8,3,10), Time.local(2005,2,28,15,15,10).advance(days: 5.7), 1
+    assert_equal Time.local(2012,9,28,15,15,10), Time.local(2005,2,28,15,15,10).advance(years: 7, months: 7)
+    assert_equal Time.local(2013,10,3,15,15,10), Time.local(2005,2,28,15,15,10).advance(years: 7, months: 19, days: 5)
+    assert_equal Time.local(2013,10,17,15,15,10), Time.local(2005,2,28,15,15,10).advance(years: 7, months: 19, weeks: 2, days: 5)
+    assert_equal Time.local(2001,12,27,15,15,10), Time.local(2005,2,28,15,15,10).advance(years: -3, months: -2, days: -1)
+    assert_equal Time.local(2005,2,28,15,15,10), Time.local(2004,2,29,15,15,10).advance(years: 1) #leap day plus one year
+    assert_equal Time.local(2005,2,28,20,15,10), Time.local(2005,2,28,15,15,10).advance(hours: 5)
+    assert_equal Time.local(2005,2,28,15,22,10), Time.local(2005,2,28,15,15,10).advance(minutes: 7)
+    assert_equal Time.local(2005,2,28,15,15,19), Time.local(2005,2,28,15,15,10).advance(seconds: 9)
+    assert_equal Time.local(2005,2,28,20,22,19), Time.local(2005,2,28,15,15,10).advance(hours: 5, minutes: 7, seconds: 9)
+    assert_equal Time.local(2005,2,28,10,8,1), Time.local(2005,2,28,15,15,10).advance(hours: -5, minutes: -7, seconds: -9)
+    assert_equal Time.local(2013,10,17,20,22,19), Time.local(2005,2,28,15,15,10).advance(years: 7, months: 19, weeks: 2, days: 5, hours: 5, minutes: 7, seconds: 9)
   end
 
   def test_utc_advance
-    assert_equal Time.utc(2006,2,22,15,15,10), Time.utc(2005,2,22,15,15,10).advance(:years => 1)
-    assert_equal Time.utc(2005,6,22,15,15,10), Time.utc(2005,2,22,15,15,10).advance(:months => 4)
-    assert_equal Time.utc(2005,3,21,15,15,10), Time.utc(2005,2,28,15,15,10).advance(:weeks => 3)
-    assert_equal Time.utc(2005,3,25,3,15,10), Time.utc(2005,2,28,15,15,10).advance(:weeks => 3.5)
-    assert_in_delta Time.utc(2005,3,26,12,51,10), Time.utc(2005,2,28,15,15,10).advance(:weeks => 3.7), 1
-    assert_equal Time.utc(2005,3,5,15,15,10), Time.utc(2005,2,28,15,15,10).advance(:days => 5)
-    assert_equal Time.utc(2005,3,6,3,15,10), Time.utc(2005,2,28,15,15,10).advance(:days => 5.5)
-    assert_in_delta Time.utc(2005,3,6,8,3,10), Time.utc(2005,2,28,15,15,10).advance(:days => 5.7), 1
-    assert_equal Time.utc(2012,9,22,15,15,10), Time.utc(2005,2,22,15,15,10).advance(:years => 7, :months => 7)
-    assert_equal Time.utc(2013,10,3,15,15,10), Time.utc(2005,2,22,15,15,10).advance(:years => 7, :months => 19, :days => 11)
-    assert_equal Time.utc(2013,10,17,15,15,10), Time.utc(2005,2,28,15,15,10).advance(:years => 7, :months => 19, :weeks => 2, :days => 5)
-    assert_equal Time.utc(2001,12,27,15,15,10), Time.utc(2005,2,28,15,15,10).advance(:years => -3, :months => -2, :days => -1)
-    assert_equal Time.utc(2005,2,28,15,15,10), Time.utc(2004,2,29,15,15,10).advance(:years => 1) #leap day plus one year
-    assert_equal Time.utc(2005,2,28,20,15,10), Time.utc(2005,2,28,15,15,10).advance(:hours => 5)
-    assert_equal Time.utc(2005,2,28,15,22,10), Time.utc(2005,2,28,15,15,10).advance(:minutes => 7)
-    assert_equal Time.utc(2005,2,28,15,15,19), Time.utc(2005,2,28,15,15,10).advance(:seconds => 9)
-    assert_equal Time.utc(2005,2,28,20,22,19), Time.utc(2005,2,28,15,15,10).advance(:hours => 5, :minutes => 7, :seconds => 9)
-    assert_equal Time.utc(2005,2,28,10,8,1), Time.utc(2005,2,28,15,15,10).advance(:hours => -5, :minutes => -7, :seconds => -9)
-    assert_equal Time.utc(2013,10,17,20,22,19), Time.utc(2005,2,28,15,15,10).advance(:years => 7, :months => 19, :weeks => 2, :days => 5, :hours => 5, :minutes => 7, :seconds => 9)
+    assert_equal Time.utc(2006,2,22,15,15,10), Time.utc(2005,2,22,15,15,10).advance(years: 1)
+    assert_equal Time.utc(2005,6,22,15,15,10), Time.utc(2005,2,22,15,15,10).advance(months: 4)
+    assert_equal Time.utc(2005,3,21,15,15,10), Time.utc(2005,2,28,15,15,10).advance(weeks: 3)
+    assert_equal Time.utc(2005,3,25,3,15,10), Time.utc(2005,2,28,15,15,10).advance(weeks: 3.5)
+    assert_in_delta Time.utc(2005,3,26,12,51,10), Time.utc(2005,2,28,15,15,10).advance(weeks: 3.7), 1
+    assert_equal Time.utc(2005,3,5,15,15,10), Time.utc(2005,2,28,15,15,10).advance(days: 5)
+    assert_equal Time.utc(2005,3,6,3,15,10), Time.utc(2005,2,28,15,15,10).advance(days: 5.5)
+    assert_in_delta Time.utc(2005,3,6,8,3,10), Time.utc(2005,2,28,15,15,10).advance(days: 5.7), 1
+    assert_equal Time.utc(2012,9,22,15,15,10), Time.utc(2005,2,22,15,15,10).advance(years: 7, months: 7)
+    assert_equal Time.utc(2013,10,3,15,15,10), Time.utc(2005,2,22,15,15,10).advance(years: 7, months: 19, days: 11)
+    assert_equal Time.utc(2013,10,17,15,15,10), Time.utc(2005,2,28,15,15,10).advance(years: 7, months: 19, weeks: 2, days: 5)
+    assert_equal Time.utc(2001,12,27,15,15,10), Time.utc(2005,2,28,15,15,10).advance(years: -3, months: -2, days: -1)
+    assert_equal Time.utc(2005,2,28,15,15,10), Time.utc(2004,2,29,15,15,10).advance(years: 1) #leap day plus one year
+    assert_equal Time.utc(2005,2,28,20,15,10), Time.utc(2005,2,28,15,15,10).advance(hours: 5)
+    assert_equal Time.utc(2005,2,28,15,22,10), Time.utc(2005,2,28,15,15,10).advance(minutes: 7)
+    assert_equal Time.utc(2005,2,28,15,15,19), Time.utc(2005,2,28,15,15,10).advance(seconds: 9)
+    assert_equal Time.utc(2005,2,28,20,22,19), Time.utc(2005,2,28,15,15,10).advance(hours: 5, minutes: 7, seconds: 9)
+    assert_equal Time.utc(2005,2,28,10,8,1), Time.utc(2005,2,28,15,15,10).advance(hours: -5, minutes: -7, seconds: -9)
+    assert_equal Time.utc(2013,10,17,20,22,19), Time.utc(2005,2,28,15,15,10).advance(years: 7, months: 19, weeks: 2, days: 5, hours: 5, minutes: 7, seconds: 9)
   end
 
   def test_offset_advance
-    assert_equal Time.new(2006,2,22,15,15,10,"-08:00"), Time.new(2005,2,22,15,15,10,"-08:00").advance(:years => 1)
-    assert_equal Time.new(2005,6,22,15,15,10,"-08:00"), Time.new(2005,2,22,15,15,10,"-08:00").advance(:months => 4)
-    assert_equal Time.new(2005,3,21,15,15,10,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(:weeks => 3)
-    assert_equal Time.new(2005,3,25,3,15,10,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(:weeks => 3.5)
-    assert_in_delta Time.new(2005,3,26,12,51,10,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(:weeks => 3.7), 1
-    assert_equal Time.new(2005,3,5,15,15,10,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(:days => 5)
-    assert_equal Time.new(2005,3,6,3,15,10,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(:days => 5.5)
-    assert_in_delta Time.new(2005,3,6,8,3,10,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(:days => 5.7), 1
-    assert_equal Time.new(2012,9,22,15,15,10,"-08:00"), Time.new(2005,2,22,15,15,10,"-08:00").advance(:years => 7, :months => 7)
-    assert_equal Time.new(2013,10,3,15,15,10,"-08:00"), Time.new(2005,2,22,15,15,10,"-08:00").advance(:years => 7, :months => 19, :days => 11)
-    assert_equal Time.new(2013,10,17,15,15,10,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(:years => 7, :months => 19, :weeks => 2, :days => 5)
-    assert_equal Time.new(2001,12,27,15,15,10,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(:years => -3, :months => -2, :days => -1)
-    assert_equal Time.new(2005,2,28,15,15,10,"-08:00"), Time.new(2004,2,29,15,15,10,"-08:00").advance(:years => 1) #leap day plus one year
-    assert_equal Time.new(2005,2,28,20,15,10,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(:hours => 5)
-    assert_equal Time.new(2005,2,28,15,22,10,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(:minutes => 7)
-    assert_equal Time.new(2005,2,28,15,15,19,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(:seconds => 9)
-    assert_equal Time.new(2005,2,28,20,22,19,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(:hours => 5, :minutes => 7, :seconds => 9)
-    assert_equal Time.new(2005,2,28,10,8,1,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(:hours => -5, :minutes => -7, :seconds => -9)
-    assert_equal Time.new(2013,10,17,20,22,19,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(:years => 7, :months => 19, :weeks => 2, :days => 5, :hours => 5, :minutes => 7, :seconds => 9)
+    assert_equal Time.new(2006,2,22,15,15,10,"-08:00"), Time.new(2005,2,22,15,15,10,"-08:00").advance(years: 1)
+    assert_equal Time.new(2005,6,22,15,15,10,"-08:00"), Time.new(2005,2,22,15,15,10,"-08:00").advance(months: 4)
+    assert_equal Time.new(2005,3,21,15,15,10,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(weeks: 3)
+    assert_equal Time.new(2005,3,25,3,15,10,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(weeks: 3.5)
+    assert_in_delta Time.new(2005,3,26,12,51,10,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(weeks: 3.7), 1
+    assert_equal Time.new(2005,3,5,15,15,10,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(days: 5)
+    assert_equal Time.new(2005,3,6,3,15,10,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(days: 5.5)
+    assert_in_delta Time.new(2005,3,6,8,3,10,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(days: 5.7), 1
+    assert_equal Time.new(2012,9,22,15,15,10,"-08:00"), Time.new(2005,2,22,15,15,10,"-08:00").advance(years: 7, months: 7)
+    assert_equal Time.new(2013,10,3,15,15,10,"-08:00"), Time.new(2005,2,22,15,15,10,"-08:00").advance(years: 7, months: 19, days: 11)
+    assert_equal Time.new(2013,10,17,15,15,10,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(years: 7, months: 19, weeks: 2, days: 5)
+    assert_equal Time.new(2001,12,27,15,15,10,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(years: -3, months: -2, days: -1)
+    assert_equal Time.new(2005,2,28,15,15,10,"-08:00"), Time.new(2004,2,29,15,15,10,"-08:00").advance(years: 1) #leap day plus one year
+    assert_equal Time.new(2005,2,28,20,15,10,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(hours: 5)
+    assert_equal Time.new(2005,2,28,15,22,10,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(minutes: 7)
+    assert_equal Time.new(2005,2,28,15,15,19,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(seconds: 9)
+    assert_equal Time.new(2005,2,28,20,22,19,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(hours: 5, minutes: 7, seconds: 9)
+    assert_equal Time.new(2005,2,28,10,8,1,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(hours: -5, minutes: -7, seconds: -9)
+    assert_equal Time.new(2013,10,17,20,22,19,"-08:00"), Time.new(2005,2,28,15,15,10,"-08:00").advance(years: 7, months: 19, weeks: 2, days: 5, hours: 5, minutes: 7, seconds: 9)
   end
 
   def test_advance_with_nsec
     t = Time.at(0, Rational(108635108, 1000))
-    assert_equal t, t.advance(:months => 0)
+    assert_equal t, t.advance(months: 0)
   end
 
   def test_advance_gregorian_proleptic
-    assert_equal Time.local(1582,10,14,15,15,10), Time.local(1582,10,15,15,15,10).advance(:days => -1)
-    assert_equal Time.local(1582,10,15,15,15,10), Time.local(1582,10,14,15,15,10).advance(:days => 1)
-    assert_equal Time.local(1582,10,5,15,15,10), Time.local(1582,10,4,15,15,10).advance(:days => 1)
-    assert_equal Time.local(1582,10,4,15,15,10), Time.local(1582,10,5,15,15,10).advance(:days => -1)
+    assert_equal Time.local(1582,10,14,15,15,10), Time.local(1582,10,15,15,15,10).advance(days: -1)
+    assert_equal Time.local(1582,10,15,15,15,10), Time.local(1582,10,14,15,15,10).advance(days: 1)
+    assert_equal Time.local(1582,10,5,15,15,10), Time.local(1582,10,4,15,15,10).advance(days: 1)
+    assert_equal Time.local(1582,10,4,15,15,10), Time.local(1582,10,5,15,15,10).advance(days: -1)
   end
 
   def test_last_week
diff --git a/activesupport/test/core_ext/time_with_zone_test.rb b/activesupport/test/core_ext/time_with_zone_test.rb
index 62235449bc..773d2c0fb7 100644
--- a/activesupport/test/core_ext/time_with_zone_test.rb
+++ b/activesupport/test/core_ext/time_with_zone_test.rb
@@ -584,18 +584,18 @@ class TimeWithZoneTest < ActiveSupport::TestCase
 
   def test_change
     assert_equal "Fri, 31 Dec 1999 19:00:00 EST -05:00", @twz.inspect
-    assert_equal "Mon, 31 Dec 2001 19:00:00 EST -05:00", @twz.change(:year => 2001).inspect
-    assert_equal "Wed, 31 Mar 1999 19:00:00 EST -05:00", @twz.change(:month => 3).inspect
-    assert_equal "Wed, 03 Mar 1999 19:00:00 EST -05:00", @twz.change(:month => 2).inspect
-    assert_equal "Wed, 15 Dec 1999 19:00:00 EST -05:00", @twz.change(:day => 15).inspect
-    assert_equal "Fri, 31 Dec 1999 06:00:00 EST -05:00", @twz.change(:hour => 6).inspect
-    assert_equal "Fri, 31 Dec 1999 19:15:00 EST -05:00", @twz.change(:min => 15).inspect
-    assert_equal "Fri, 31 Dec 1999 19:00:30 EST -05:00", @twz.change(:sec => 30).inspect
+    assert_equal "Mon, 31 Dec 2001 19:00:00 EST -05:00", @twz.change(year: 2001).inspect
+    assert_equal "Wed, 31 Mar 1999 19:00:00 EST -05:00", @twz.change(month: 3).inspect
+    assert_equal "Wed, 03 Mar 1999 19:00:00 EST -05:00", @twz.change(month: 2).inspect
+    assert_equal "Wed, 15 Dec 1999 19:00:00 EST -05:00", @twz.change(day: 15).inspect
+    assert_equal "Fri, 31 Dec 1999 06:00:00 EST -05:00", @twz.change(hour: 6).inspect
+    assert_equal "Fri, 31 Dec 1999 19:15:00 EST -05:00", @twz.change(min: 15).inspect
+    assert_equal "Fri, 31 Dec 1999 19:00:30 EST -05:00", @twz.change(sec: 30).inspect
   end
 
   def test_change_at_dst_boundary
     twz = ActiveSupport::TimeWithZone.new(Time.at(1319936400).getutc, ActiveSupport::TimeZone["Madrid"])
-    assert_equal twz, twz.change(:min => 0)
+    assert_equal twz, twz.change(min: 0)
   end
 
   def test_round_at_dst_boundary
@@ -605,12 +605,12 @@ class TimeWithZoneTest < ActiveSupport::TestCase
 
   def test_advance
     assert_equal "Fri, 31 Dec 1999 19:00:00 EST -05:00", @twz.inspect
-    assert_equal "Mon, 31 Dec 2001 19:00:00 EST -05:00", @twz.advance(:years => 2).inspect
-    assert_equal "Fri, 31 Mar 2000 19:00:00 EST -05:00", @twz.advance(:months => 3).inspect
-    assert_equal "Tue, 04 Jan 2000 19:00:00 EST -05:00", @twz.advance(:days => 4).inspect
-    assert_equal "Sat, 01 Jan 2000 01:00:00 EST -05:00", @twz.advance(:hours => 6).inspect
-    assert_equal "Fri, 31 Dec 1999 19:15:00 EST -05:00", @twz.advance(:minutes => 15).inspect
-    assert_equal "Fri, 31 Dec 1999 19:00:30 EST -05:00", @twz.advance(:seconds => 30).inspect
+    assert_equal "Mon, 31 Dec 2001 19:00:00 EST -05:00", @twz.advance(years: 2).inspect
+    assert_equal "Fri, 31 Mar 2000 19:00:00 EST -05:00", @twz.advance(months: 3).inspect
+    assert_equal "Tue, 04 Jan 2000 19:00:00 EST -05:00", @twz.advance(days: 4).inspect
+    assert_equal "Sat, 01 Jan 2000 01:00:00 EST -05:00", @twz.advance(hours: 6).inspect
+    assert_equal "Fri, 31 Dec 1999 19:15:00 EST -05:00", @twz.advance(minutes: 15).inspect
+    assert_equal "Fri, 31 Dec 1999 19:00:30 EST -05:00", @twz.advance(seconds: 30).inspect
   end
 
   def test_beginning_of_year
@@ -685,7 +685,7 @@ class TimeWithZoneTest < ActiveSupport::TestCase
 
   def test_advance_1_year_from_leap_day
     twz = ActiveSupport::TimeWithZone.new(nil, @time_zone, Time.utc(2004,2,29))
-    assert_equal "Mon, 28 Feb 2005 00:00:00 EST -05:00", twz.advance(:years => 1).inspect
+    assert_equal "Mon, 28 Feb 2005 00:00:00 EST -05:00", twz.advance(years: 1).inspect
     assert_equal "Mon, 28 Feb 2005 00:00:00 EST -05:00", twz.years_since(1).inspect
     assert_equal "Mon, 28 Feb 2005 00:00:00 EST -05:00", twz.since(1.year).inspect
     assert_equal "Mon, 28 Feb 2005 00:00:00 EST -05:00", (twz + 1.year).inspect
@@ -693,7 +693,7 @@ class TimeWithZoneTest < ActiveSupport::TestCase
 
   def test_advance_1_month_from_last_day_of_january
     twz = ActiveSupport::TimeWithZone.new(nil, @time_zone, Time.utc(2005,1,31))
-    assert_equal "Mon, 28 Feb 2005 00:00:00 EST -05:00", twz.advance(:months => 1).inspect
+    assert_equal "Mon, 28 Feb 2005 00:00:00 EST -05:00", twz.advance(months: 1).inspect
     assert_equal "Mon, 28 Feb 2005 00:00:00 EST -05:00", twz.months_since(1).inspect
     assert_equal "Mon, 28 Feb 2005 00:00:00 EST -05:00", twz.since(1.month).inspect
     assert_equal "Mon, 28 Feb 2005 00:00:00 EST -05:00", (twz + 1.month).inspect
@@ -701,7 +701,7 @@ class TimeWithZoneTest < ActiveSupport::TestCase
 
   def test_advance_1_month_from_last_day_of_january_during_leap_year
     twz = ActiveSupport::TimeWithZone.new(nil, @time_zone, Time.utc(2000,1,31))
-    assert_equal "Tue, 29 Feb 2000 00:00:00 EST -05:00", twz.advance(:months => 1).inspect
+    assert_equal "Tue, 29 Feb 2000 00:00:00 EST -05:00", twz.advance(months: 1).inspect
     assert_equal "Tue, 29 Feb 2000 00:00:00 EST -05:00", twz.months_since(1).inspect
     assert_equal "Tue, 29 Feb 2000 00:00:00 EST -05:00", twz.since(1.month).inspect
     assert_equal "Tue, 29 Feb 2000 00:00:00 EST -05:00", (twz + 1.month).inspect
@@ -709,7 +709,7 @@ class TimeWithZoneTest < ActiveSupport::TestCase
 
   def test_advance_1_month_into_spring_dst_gap
     twz = ActiveSupport::TimeWithZone.new(nil, @time_zone, Time.utc(2006,3,2,2))
-    assert_equal "Sun, 02 Apr 2006 03:00:00 EDT -04:00", twz.advance(:months => 1).inspect
+    assert_equal "Sun, 02 Apr 2006 03:00:00 EDT -04:00", twz.advance(months: 1).inspect
     assert_equal "Sun, 02 Apr 2006 03:00:00 EDT -04:00", twz.months_since(1).inspect
     assert_equal "Sun, 02 Apr 2006 03:00:00 EDT -04:00", twz.since(1.month).inspect
     assert_equal "Sun, 02 Apr 2006 03:00:00 EDT -04:00", (twz + 1.month).inspect
@@ -717,7 +717,7 @@ class TimeWithZoneTest < ActiveSupport::TestCase
 
   def test_advance_1_second_into_spring_dst_gap
     twz = ActiveSupport::TimeWithZone.new(nil, @time_zone, Time.utc(2006,4,2,1,59,59))
-    assert_equal "Sun, 02 Apr 2006 03:00:00 EDT -04:00", twz.advance(:seconds => 1).inspect
+    assert_equal "Sun, 02 Apr 2006 03:00:00 EDT -04:00", twz.advance(seconds: 1).inspect
     assert_equal "Sun, 02 Apr 2006 03:00:00 EDT -04:00", (twz + 1).inspect
     assert_equal "Sun, 02 Apr 2006 03:00:00 EDT -04:00", twz.since(1).inspect
     assert_equal "Sun, 02 Apr 2006 03:00:00 EDT -04:00", twz.since(1.second).inspect
@@ -728,7 +728,7 @@ class TimeWithZoneTest < ActiveSupport::TestCase
     twz = ActiveSupport::TimeWithZone.new(nil, @time_zone, Time.utc(2006,4,1,10,30))
     # In 2006, spring DST transition occurred Apr 2 at 2AM; this day was only 23 hours long
     # When we advance 1 day, we want to end up at the same time on the next day
-    assert_equal "Sun, 02 Apr 2006 10:30:00 EDT -04:00", twz.advance(:days => 1).inspect
+    assert_equal "Sun, 02 Apr 2006 10:30:00 EDT -04:00", twz.advance(days: 1).inspect
     assert_equal "Sun, 02 Apr 2006 10:30:00 EDT -04:00", twz.since(1.days).inspect
     assert_equal "Sun, 02 Apr 2006 10:30:00 EDT -04:00", (twz + 1.days).inspect
     assert_equal "Sun, 02 Apr 2006 10:30:01 EDT -04:00", twz.since(1.days + 1.second).inspect
@@ -739,7 +739,7 @@ class TimeWithZoneTest < ActiveSupport::TestCase
     twz = ActiveSupport::TimeWithZone.new(nil, @time_zone, Time.utc(2006,4,2,10,30))
     # In 2006, spring DST transition occurred Apr 2 at 2AM; this day was only 23 hours long
     # When we advance back 1 day, we want to end up at the same time on the previous day
-    assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.advance(:days => -1).inspect
+    assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.advance(days: -1).inspect
     assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.ago(1.days).inspect
     assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", (twz - 1.days).inspect
     assert_equal "Sat, 01 Apr 2006 10:30:01 EST -05:00", twz.ago(1.days - 1.second).inspect
@@ -753,13 +753,13 @@ class TimeWithZoneTest < ActiveSupport::TestCase
     assert_equal "Sun, 02 Apr 2006 11:30:00 EDT -04:00", (twz + 86400.seconds).inspect
     assert_equal "Sun, 02 Apr 2006 11:30:00 EDT -04:00", twz.since(86400).inspect
     assert_equal "Sun, 02 Apr 2006 11:30:00 EDT -04:00", twz.since(86400.seconds).inspect
-    assert_equal "Sun, 02 Apr 2006 11:30:00 EDT -04:00", twz.advance(:seconds => 86400).inspect
+    assert_equal "Sun, 02 Apr 2006 11:30:00 EDT -04:00", twz.advance(seconds: 86400).inspect
     assert_equal "Sun, 02 Apr 2006 11:30:00 EDT -04:00", (twz + 1440.minutes).inspect
     assert_equal "Sun, 02 Apr 2006 11:30:00 EDT -04:00", twz.since(1440.minutes).inspect
-    assert_equal "Sun, 02 Apr 2006 11:30:00 EDT -04:00", twz.advance(:minutes => 1440).inspect
+    assert_equal "Sun, 02 Apr 2006 11:30:00 EDT -04:00", twz.advance(minutes: 1440).inspect
     assert_equal "Sun, 02 Apr 2006 11:30:00 EDT -04:00", (twz + 24.hours).inspect
     assert_equal "Sun, 02 Apr 2006 11:30:00 EDT -04:00", twz.since(24.hours).inspect
-    assert_equal "Sun, 02 Apr 2006 11:30:00 EDT -04:00", twz.advance(:hours => 24).inspect
+    assert_equal "Sun, 02 Apr 2006 11:30:00 EDT -04:00", twz.advance(hours: 24).inspect
   end
 
   def test_advance_1_day_expressed_as_number_of_seconds_minutes_or_hours_across_spring_dst_transition_backwards
@@ -770,20 +770,20 @@ class TimeWithZoneTest < ActiveSupport::TestCase
     assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", (twz - 86400.seconds).inspect
     assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.ago(86400).inspect
     assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.ago(86400.seconds).inspect
-    assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.advance(:seconds => -86400).inspect
+    assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.advance(seconds: -86400).inspect
     assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", (twz - 1440.minutes).inspect
     assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.ago(1440.minutes).inspect
-    assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.advance(:minutes => -1440).inspect
+    assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.advance(minutes: -1440).inspect
     assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", (twz - 24.hours).inspect
     assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.ago(24.hours).inspect
-    assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.advance(:hours => -24).inspect
+    assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.advance(hours: -24).inspect
   end
 
   def test_advance_1_day_across_fall_dst_transition
     twz = ActiveSupport::TimeWithZone.new(nil, @time_zone, Time.utc(2006,10,28,10,30))
     # In 2006, fall DST transition occurred Oct 29 at 2AM; this day was 25 hours long
     # When we advance 1 day, we want to end up at the same time on the next day
-    assert_equal "Sun, 29 Oct 2006 10:30:00 EST -05:00", twz.advance(:days => 1).inspect
+    assert_equal "Sun, 29 Oct 2006 10:30:00 EST -05:00", twz.advance(days: 1).inspect
     assert_equal "Sun, 29 Oct 2006 10:30:00 EST -05:00", twz.since(1.days).inspect
     assert_equal "Sun, 29 Oct 2006 10:30:00 EST -05:00", (twz + 1.days).inspect
     assert_equal "Sun, 29 Oct 2006 10:30:01 EST -05:00", twz.since(1.days + 1.second).inspect
@@ -794,7 +794,7 @@ class TimeWithZoneTest < ActiveSupport::TestCase
     twz = ActiveSupport::TimeWithZone.new(nil, @time_zone, Time.utc(2006,10,29,10,30))
     # In 2006, fall DST transition occurred Oct 29 at 2AM; this day was 25 hours long
     # When we advance backwards 1 day, we want to end up at the same time on the previous day
-    assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.advance(:days => -1).inspect
+    assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.advance(days: -1).inspect
     assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.ago(1.days).inspect
     assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", (twz - 1.days).inspect
     assert_equal "Sat, 28 Oct 2006 10:30:01 EDT -04:00", twz.ago(1.days - 1.second).inspect
@@ -808,13 +808,13 @@ class TimeWithZoneTest < ActiveSupport::TestCase
     assert_equal "Sun, 29 Oct 2006 09:30:00 EST -05:00", (twz + 86400.seconds).inspect
     assert_equal "Sun, 29 Oct 2006 09:30:00 EST -05:00", twz.since(86400).inspect
     assert_equal "Sun, 29 Oct 2006 09:30:00 EST -05:00", twz.since(86400.seconds).inspect
-    assert_equal "Sun, 29 Oct 2006 09:30:00 EST -05:00", twz.advance(:seconds => 86400).inspect
+    assert_equal "Sun, 29 Oct 2006 09:30:00 EST -05:00", twz.advance(seconds: 86400).inspect
     assert_equal "Sun, 29 Oct 2006 09:30:00 EST -05:00", (twz + 1440.minutes).inspect
     assert_equal "Sun, 29 Oct 2006 09:30:00 EST -05:00", twz.since(1440.minutes).inspect
-    assert_equal "Sun, 29 Oct 2006 09:30:00 EST -05:00", twz.advance(:minutes => 1440).inspect
+    assert_equal "Sun, 29 Oct 2006 09:30:00 EST -05:00", twz.advance(minutes: 1440).inspect
     assert_equal "Sun, 29 Oct 2006 09:30:00 EST -05:00", (twz + 24.hours).inspect
     assert_equal "Sun, 29 Oct 2006 09:30:00 EST -05:00", twz.since(24.hours).inspect
-    assert_equal "Sun, 29 Oct 2006 09:30:00 EST -05:00", twz.advance(:hours => 24).inspect
+    assert_equal "Sun, 29 Oct 2006 09:30:00 EST -05:00", twz.advance(hours: 24).inspect
   end
 
   def test_advance_1_day_expressed_as_number_of_seconds_minutes_or_hours_across_fall_dst_transition_backwards
@@ -825,18 +825,18 @@ class TimeWithZoneTest < ActiveSupport::TestCase
     assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", (twz - 86400.seconds).inspect
     assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.ago(86400).inspect
     assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.ago(86400.seconds).inspect
-    assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.advance(:seconds => -86400).inspect
+    assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.advance(seconds: -86400).inspect
     assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", (twz - 1440.minutes).inspect
     assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.ago(1440.minutes).inspect
-    assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.advance(:minutes => -1440).inspect
+    assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.advance(minutes: -1440).inspect
     assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", (twz - 24.hours).inspect
     assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.ago(24.hours).inspect
-    assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.advance(:hours => -24).inspect
+    assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.advance(hours: -24).inspect
   end
 
   def test_advance_1_week_across_spring_dst_transition
     twz = ActiveSupport::TimeWithZone.new(nil, @time_zone, Time.utc(2006,4,1,10,30))
-    assert_equal "Sat, 08 Apr 2006 10:30:00 EDT -04:00", twz.advance(:weeks => 1).inspect
+    assert_equal "Sat, 08 Apr 2006 10:30:00 EDT -04:00", twz.advance(weeks: 1).inspect
     assert_equal "Sat, 08 Apr 2006 10:30:00 EDT -04:00", twz.weeks_since(1).inspect
     assert_equal "Sat, 08 Apr 2006 10:30:00 EDT -04:00", twz.since(1.week).inspect
     assert_equal "Sat, 08 Apr 2006 10:30:00 EDT -04:00", (twz + 1.week).inspect
@@ -844,7 +844,7 @@ class TimeWithZoneTest < ActiveSupport::TestCase
 
   def test_advance_1_week_across_spring_dst_transition_backwards
     twz = ActiveSupport::TimeWithZone.new(nil, @time_zone, Time.utc(2006,4,8,10,30))
-    assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.advance(:weeks => -1).inspect
+    assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.advance(weeks: -1).inspect
     assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.weeks_ago(1).inspect
     assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.ago(1.week).inspect
     assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", (twz - 1.week).inspect
@@ -852,7 +852,7 @@ class TimeWithZoneTest < ActiveSupport::TestCase
 
   def test_advance_1_week_across_fall_dst_transition
     twz = ActiveSupport::TimeWithZone.new(nil, @time_zone, Time.utc(2006,10,28,10,30))
-    assert_equal "Sat, 04 Nov 2006 10:30:00 EST -05:00", twz.advance(:weeks => 1).inspect
+    assert_equal "Sat, 04 Nov 2006 10:30:00 EST -05:00", twz.advance(weeks: 1).inspect
     assert_equal "Sat, 04 Nov 2006 10:30:00 EST -05:00", twz.weeks_since(1).inspect
     assert_equal "Sat, 04 Nov 2006 10:30:00 EST -05:00", twz.since(1.week).inspect
     assert_equal "Sat, 04 Nov 2006 10:30:00 EST -05:00", (twz + 1.week).inspect
@@ -860,7 +860,7 @@ class TimeWithZoneTest < ActiveSupport::TestCase
 
   def test_advance_1_week_across_fall_dst_transition_backwards
     twz = ActiveSupport::TimeWithZone.new(nil, @time_zone, Time.utc(2006,11,4,10,30))
-    assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.advance(:weeks => -1).inspect
+    assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.advance(weeks: -1).inspect
     assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.weeks_ago(1).inspect
     assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.ago(1.week).inspect
     assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", (twz - 1.week).inspect
@@ -868,7 +868,7 @@ class TimeWithZoneTest < ActiveSupport::TestCase
 
   def test_advance_1_month_across_spring_dst_transition
     twz = ActiveSupport::TimeWithZone.new(nil, @time_zone, Time.utc(2006,4,1,10,30))
-    assert_equal "Mon, 01 May 2006 10:30:00 EDT -04:00", twz.advance(:months => 1).inspect
+    assert_equal "Mon, 01 May 2006 10:30:00 EDT -04:00", twz.advance(months: 1).inspect
     assert_equal "Mon, 01 May 2006 10:30:00 EDT -04:00", twz.months_since(1).inspect
     assert_equal "Mon, 01 May 2006 10:30:00 EDT -04:00", twz.since(1.month).inspect
     assert_equal "Mon, 01 May 2006 10:30:00 EDT -04:00", (twz + 1.month).inspect
@@ -876,7 +876,7 @@ class TimeWithZoneTest < ActiveSupport::TestCase
 
   def test_advance_1_month_across_spring_dst_transition_backwards
     twz = ActiveSupport::TimeWithZone.new(nil, @time_zone, Time.utc(2006,5,1,10,30))
-    assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.advance(:months => -1).inspect
+    assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.advance(months: -1).inspect
     assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.months_ago(1).inspect
     assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", twz.ago(1.month).inspect
     assert_equal "Sat, 01 Apr 2006 10:30:00 EST -05:00", (twz - 1.month).inspect
@@ -884,7 +884,7 @@ class TimeWithZoneTest < ActiveSupport::TestCase
 
   def test_advance_1_month_across_fall_dst_transition
     twz = ActiveSupport::TimeWithZone.new(nil, @time_zone, Time.utc(2006,10,28,10,30))
-    assert_equal "Tue, 28 Nov 2006 10:30:00 EST -05:00", twz.advance(:months => 1).inspect
+    assert_equal "Tue, 28 Nov 2006 10:30:00 EST -05:00", twz.advance(months: 1).inspect
     assert_equal "Tue, 28 Nov 2006 10:30:00 EST -05:00", twz.months_since(1).inspect
     assert_equal "Tue, 28 Nov 2006 10:30:00 EST -05:00", twz.since(1.month).inspect
     assert_equal "Tue, 28 Nov 2006 10:30:00 EST -05:00", (twz + 1.month).inspect
@@ -892,7 +892,7 @@ class TimeWithZoneTest < ActiveSupport::TestCase
 
   def test_advance_1_month_across_fall_dst_transition_backwards
     twz = ActiveSupport::TimeWithZone.new(nil, @time_zone, Time.utc(2006,11,28,10,30))
-    assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.advance(:months => -1).inspect
+    assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.advance(months: -1).inspect
     assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.months_ago(1).inspect
     assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", twz.ago(1.month).inspect
     assert_equal "Sat, 28 Oct 2006 10:30:00 EDT -04:00", (twz - 1.month).inspect
@@ -900,20 +900,20 @@ class TimeWithZoneTest < ActiveSupport::TestCase
 
   def test_advance_1_year
     twz = ActiveSupport::TimeWithZone.new(nil, @time_zone, Time.utc(2008,2,15,10,30))
-    assert_equal "Sun, 15 Feb 2009 10:30:00 EST -05:00", twz.advance(:years => 1).inspect
+    assert_equal "Sun, 15 Feb 2009 10:30:00 EST -05:00", twz.advance(years: 1).inspect
     assert_equal "Sun, 15 Feb 2009 10:30:00 EST -05:00", twz.years_since(1).inspect
     assert_equal "Sun, 15 Feb 2009 10:30:00 EST -05:00", (twz + 1.year).inspect
-    assert_equal "Thu, 15 Feb 2007 10:30:00 EST -05:00", twz.advance(:years => -1).inspect
+    assert_equal "Thu, 15 Feb 2007 10:30:00 EST -05:00", twz.advance(years: -1).inspect
     assert_equal "Thu, 15 Feb 2007 10:30:00 EST -05:00", twz.years_ago(1).inspect
     assert_equal "Thu, 15 Feb 2007 10:30:00 EST -05:00", (twz - 1.year).inspect
   end
 
   def test_advance_1_year_during_dst
     twz = ActiveSupport::TimeWithZone.new(nil, @time_zone, Time.utc(2008,7,15,10,30))
-    assert_equal "Wed, 15 Jul 2009 10:30:00 EDT -04:00", twz.advance(:years => 1).inspect
+    assert_equal "Wed, 15 Jul 2009 10:30:00 EDT -04:00", twz.advance(years: 1).inspect
     assert_equal "Wed, 15 Jul 2009 10:30:00 EDT -04:00", twz.years_since(1).inspect
     assert_equal "Wed, 15 Jul 2009 10:30:00 EDT -04:00", (twz + 1.year).inspect
-    assert_equal "Sun, 15 Jul 2007 10:30:00 EDT -04:00", twz.advance(:years => -1).inspect
+    assert_equal "Sun, 15 Jul 2007 10:30:00 EDT -04:00", twz.advance(years: -1).inspect
     assert_equal "Sun, 15 Jul 2007 10:30:00 EDT -04:00", twz.years_ago(1).inspect
     assert_equal "Sun, 15 Jul 2007 10:30:00 EDT -04:00", (twz - 1.year).inspect
   end
diff --git a/activesupport/test/deprecation/method_wrappers_test.rb b/activesupport/test/deprecation/method_wrappers_test.rb
index ec477f929e..85d057bb02 100644
--- a/activesupport/test/deprecation/method_wrappers_test.rb
+++ b/activesupport/test/deprecation/method_wrappers_test.rb
@@ -11,7 +11,7 @@ class MethodWrappersTest < ActiveSupport::TestCase
 
   def test_deprecate_methods_warning_default
     warning = /old_method is deprecated and will be removed from Rails \d.\d \(use new_method instead\)/
-    ActiveSupport::Deprecation.deprecate_methods(@klass, :old_method => :new_method)
+    ActiveSupport::Deprecation.deprecate_methods(@klass, old_method: :new_method)
 
     assert_deprecated(warning) { assert_equal "abc", @klass.new.old_method }
   end
@@ -19,7 +19,7 @@ class MethodWrappersTest < ActiveSupport::TestCase
   def test_deprecate_methods_warning_with_optional_deprecator
     warning = /old_method is deprecated and will be removed from MyGem next-release \(use new_method instead\)/
     deprecator = ActiveSupport::Deprecation.new("next-release", "MyGem")
-    ActiveSupport::Deprecation.deprecate_methods(@klass, :old_method => :new_method, :deprecator => deprecator)
+    ActiveSupport::Deprecation.deprecate_methods(@klass, old_method: :new_method, deprecator: deprecator)
 
     assert_deprecated(warning, deprecator) { assert_equal "abc", @klass.new.old_method }
   end
@@ -27,7 +27,7 @@ class MethodWrappersTest < ActiveSupport::TestCase
   def test_deprecate_methods_warning_when_deprecated_with_custom_deprecator
     warning = /old_method is deprecated and will be removed from MyGem next-release \(use new_method instead\)/
     deprecator = ActiveSupport::Deprecation.new("next-release", "MyGem")
-    deprecator.deprecate_methods(@klass, :old_method => :new_method)
+    deprecator.deprecate_methods(@klass, old_method: :new_method)
 
     assert_deprecated(warning, deprecator) { assert_equal "abc", @klass.new.old_method }
   end
diff --git a/activesupport/test/deprecation_test.rb b/activesupport/test/deprecation_test.rb
index 2971c384ed..b9447d74b4 100644
--- a/activesupport/test/deprecation_test.rb
+++ b/activesupport/test/deprecation_test.rb
@@ -24,7 +24,7 @@ class Deprecatee
   def c; end
   def d; end
   def e; end
-  deprecate :a, :b, :c => :e, :d => "you now need to do something extra for this one"
+  deprecate :a, :b, c: :e, d: "you now need to do something extra for this one"
 
   def f=(v); end
   deprecate :f=
diff --git a/activesupport/test/i18n_test.rb b/activesupport/test/i18n_test.rb
index 419482c527..7d88d2dc6b 100644
--- a/activesupport/test/i18n_test.rb
+++ b/activesupport/test/i18n_test.rb
@@ -18,15 +18,15 @@ class I18nTest < ActiveSupport::TestCase
   end
 
   def test_date_localization_with_default_format
-    assert_equal @date.strftime("%Y-%m-%d"), I18n.localize(@date, :format => :default)
+    assert_equal @date.strftime("%Y-%m-%d"), I18n.localize(@date, format: :default)
   end
 
   def test_date_localization_with_short_format
-    assert_equal @date.strftime("%b %d"), I18n.localize(@date, :format => :short)
+    assert_equal @date.strftime("%b %d"), I18n.localize(@date, format: :short)
   end
 
   def test_date_localization_with_long_format
-    assert_equal @date.strftime("%B %d, %Y"), I18n.localize(@date, :format => :long)
+    assert_equal @date.strftime("%B %d, %Y"), I18n.localize(@date, format: :long)
   end
 
   def test_time_localization_should_use_default_format
@@ -34,15 +34,15 @@ class I18nTest < ActiveSupport::TestCase
   end
 
   def test_time_localization_with_default_format
-    assert_equal @time.strftime("%a, %d %b %Y %H:%M:%S %z"), I18n.localize(@time, :format => :default)
+    assert_equal @time.strftime("%a, %d %b %Y %H:%M:%S %z"), I18n.localize(@time, format: :default)
   end
 
   def test_time_localization_with_short_format
-    assert_equal @time.strftime("%d %b %H:%M"), I18n.localize(@time, :format => :short)
+    assert_equal @time.strftime("%d %b %H:%M"), I18n.localize(@time, format: :short)
   end
 
   def test_time_localization_with_long_format
-    assert_equal @time.strftime("%B %d, %Y %H:%M"), I18n.localize(@time, :format => :long)
+    assert_equal @time.strftime("%B %d, %Y %H:%M"), I18n.localize(@time, format: :long)
   end
 
   def test_day_names
@@ -89,13 +89,13 @@ class I18nTest < ActiveSupport::TestCase
     default_two_words_connector = I18n.translate(:'support.array.two_words_connector')
     default_last_word_connector = I18n.translate(:'support.array.last_word_connector')
     assert_equal "a, b, and c", %w[a b c].to_sentence
-    I18n.backend.store_translations "en", :support => { :array => { :two_words_connector => " & " } }
+    I18n.backend.store_translations "en", support: { array: { two_words_connector: " & " } }
     assert_equal "a & b", %w[a b].to_sentence
-    I18n.backend.store_translations "en", :support => { :array => { :last_word_connector => " and " } }
+    I18n.backend.store_translations "en", support: { array: { last_word_connector: " and " } }
     assert_equal "a, b and c", %w[a b c].to_sentence
   ensure
-    I18n.backend.store_translations "en", :support => { :array => { :two_words_connector => default_two_words_connector } }
-    I18n.backend.store_translations "en", :support => { :array => { :last_word_connector => default_last_word_connector } }
+    I18n.backend.store_translations "en", support: { array: { two_words_connector: default_two_words_connector } }
+    I18n.backend.store_translations "en", support: { array: { last_word_connector: default_last_word_connector } }
   end
 
   def test_to_sentence_with_empty_i18n_store
diff --git a/activesupport/test/inflector_test_cases.rb b/activesupport/test/inflector_test_cases.rb
index 02bf9f0f35..4ee723076e 100644
--- a/activesupport/test/inflector_test_cases.rb
+++ b/activesupport/test/inflector_test_cases.rb
@@ -128,10 +128,10 @@ module InflectorTestCases
   }
 
   SymbolToLowerCamel = {
-    :product                => "product",
-    :special_guest          => "specialGuest",
-    :application_controller => "applicationController",
-    :area51_controller      => "area51Controller"
+    product: "product",
+    special_guest: "specialGuest",
+    application_controller: "applicationController",
+    area51_controller: "area51Controller"
   }
 
   CamelToUnderscoreWithoutReverse = {
diff --git a/activesupport/test/json/encoding_test.rb b/activesupport/test/json/encoding_test.rb
index 308b29784e..4a9ed22951 100644
--- a/activesupport/test/json/encoding_test.rb
+++ b/activesupport/test/json/encoding_test.rb
@@ -47,12 +47,12 @@ class TestJSONEncoding < ActiveSupport::TestCase
   end
 
   def test_hash_encoding
-    assert_equal %({\"a\":\"b\"}), ActiveSupport::JSON.encode(:a => :b)
+    assert_equal %({\"a\":\"b\"}), ActiveSupport::JSON.encode(a: :b)
     assert_equal %({\"a\":1}), ActiveSupport::JSON.encode("a" => 1)
     assert_equal %({\"a\":[1,2]}), ActiveSupport::JSON.encode("a" => [1,2])
     assert_equal %({"1":2}), ActiveSupport::JSON.encode(1 => 2)
 
-    assert_equal %({\"a\":\"b\",\"c\":\"d\"}), sorted_json(ActiveSupport::JSON.encode(:a => :b, :c => :d))
+    assert_equal %({\"a\":\"b\",\"c\":\"d\"}), sorted_json(ActiveSupport::JSON.encode(a: :b, c: :d))
   end
 
   def test_hash_keys_encoding
@@ -98,11 +98,11 @@ class TestJSONEncoding < ActiveSupport::TestCase
   end
 
   def test_hash_should_allow_key_filtering_with_only
-    assert_equal %({"a":1}), ActiveSupport::JSON.encode({"a" => 1, :b => 2, :c => 3}, :only => "a")
+    assert_equal %({"a":1}), ActiveSupport::JSON.encode({"a" => 1, :b => 2, :c => 3}, only: "a")
   end
 
   def test_hash_should_allow_key_filtering_with_except
-    assert_equal %({"b":2}), ActiveSupport::JSON.encode({"foo" => "bar", :b => 2, :c => 3}, :except => ["foo", :c])
+    assert_equal %({"b":2}), ActiveSupport::JSON.encode({"foo" => "bar", :b => 2, :c => 3}, except: ["foo", :c])
   end
 
   def test_time_to_json_includes_local_offset
@@ -115,7 +115,7 @@ class TestJSONEncoding < ActiveSupport::TestCase
 
   def test_hash_with_time_to_json
     with_standard_json_time_format(false) do
-      assert_equal '{"time":"2009/01/01 00:00:00 +0000"}', { :time => Time.utc(2009) }.to_json
+      assert_equal '{"time":"2009/01/01 00:00:00 +0000"}', { time: Time.utc(2009) }.to_json
     end
   end
 
@@ -123,8 +123,8 @@ class TestJSONEncoding < ActiveSupport::TestCase
     assert_nothing_raised do
       hash = {
         "CHI" => {
-          :display_name => "chicago",
-          :latitude => 123.234
+          display_name: "chicago",
+          latitude: 123.234
         }
       }
       ActiveSupport::JSON.encode(hash)
@@ -133,7 +133,7 @@ class TestJSONEncoding < ActiveSupport::TestCase
 
   def test_hash_like_with_options
     h = JSONTest::Hashlike.new
-    json = h.to_json :only => [:foo]
+    json = h.to_json only: [:foo]
 
     assert_equal({"foo"=>"hello"}, JSON.parse(json))
   end
@@ -142,7 +142,7 @@ class TestJSONEncoding < ActiveSupport::TestCase
     obj = Object.new
     obj.instance_variable_set :@foo, "hello"
     obj.instance_variable_set :@bar, "world"
-    json = obj.to_json :only => ["foo"]
+    json = obj.to_json only: ["foo"]
 
     assert_equal({"foo"=>"hello"}, JSON.parse(json))
   end
@@ -151,43 +151,43 @@ class TestJSONEncoding < ActiveSupport::TestCase
     struct = Struct.new(:foo, :bar).new
     struct.foo = "hello"
     struct.bar = "world"
-    json = struct.to_json :only => [:foo]
+    json = struct.to_json only: [:foo]
 
     assert_equal({"foo"=>"hello"}, JSON.parse(json))
   end
 
   def test_hash_should_pass_encoding_options_to_children_in_as_json
     person = {
-      :name => "John",
-      :address => {
-        :city => "London",
-        :country => "UK"
+      name: "John",
+      address: {
+        city: "London",
+        country: "UK"
       }
     }
-    json = person.as_json :only => [:address, :city]
+    json = person.as_json only: [:address, :city]
 
     assert_equal({ "address" => { "city" => "London" }}, json)
   end
 
   def test_hash_should_pass_encoding_options_to_children_in_to_json
     person = {
-      :name => "John",
-      :address => {
-        :city => "London",
-        :country => "UK"
+      name: "John",
+      address: {
+        city: "London",
+        country: "UK"
       }
     }
-    json = person.to_json :only => [:address, :city]
+    json = person.to_json only: [:address, :city]
 
     assert_equal(%({"address":{"city":"London"}}), json)
   end
 
   def test_array_should_pass_encoding_options_to_children_in_as_json
     people = [
-      { :name => "John", :address => { :city => "London", :country => "UK" }},
-      { :name => "Jean", :address => { :city => "Paris" , :country => "France" }}
+      { name: "John", address: { city: "London", country: "UK" }},
+      { name: "Jean", address: { city: "Paris" , country: "France" }}
     ]
-    json = people.as_json :only => [:address, :city]
+    json = people.as_json only: [:address, :city]
     expected = [
       { "address" => { "city" => "London" }},
       { "address" => { "city" => "Paris" }}
@@ -198,10 +198,10 @@ class TestJSONEncoding < ActiveSupport::TestCase
 
   def test_array_should_pass_encoding_options_to_children_in_to_json
     people = [
-      { :name => "John", :address => { :city => "London", :country => "UK" }},
-      { :name => "Jean", :address => { :city => "Paris" , :country => "France" }}
+      { name: "John", address: { city: "London", country: "UK" }},
+      { name: "Jean", address: { city: "Paris" , country: "France" }}
     ]
-    json = people.to_json :only => [:address, :city]
+    json = people.to_json only: [:address, :city]
 
     assert_equal(%([{"address":{"city":"London"}},{"address":{"city":"Paris"}}]), json)
   end
@@ -210,8 +210,8 @@ class TestJSONEncoding < ActiveSupport::TestCase
     include Enumerable
     def initialize()
       @people = [
-        { :name => "John", :address => { :city => "London", :country => "UK" }},
-        { :name => "Jean", :address => { :city => "Paris" , :country => "France" }}
+        { name: "John", address: { city: "London", country: "UK" }},
+        { name: "Jean", address: { city: "Paris" , country: "France" }}
       ]
     end
     def each(*, &blk)
@@ -223,7 +223,7 @@ class TestJSONEncoding < ActiveSupport::TestCase
   end
 
   def test_enumerable_should_generate_json_with_as_json
-    json = People.new.as_json :only => [:address, :city]
+    json = People.new.as_json only: [:address, :city]
     expected = [
       { "address" => { "city" => "London" }},
       { "address" => { "city" => "Paris" }}
@@ -233,12 +233,12 @@ class TestJSONEncoding < ActiveSupport::TestCase
   end
 
   def test_enumerable_should_generate_json_with_to_json
-    json = People.new.to_json :only => [:address, :city]
+    json = People.new.to_json only: [:address, :city]
     assert_equal(%([{"address":{"city":"London"}},{"address":{"city":"Paris"}}]), json)
   end
 
   def test_enumerable_should_pass_encoding_options_to_children_in_as_json
-    json = People.new.each.as_json :only => [:address, :city]
+    json = People.new.each.as_json only: [:address, :city]
     expected = [
       { "address" => { "city" => "London" }},
       { "address" => { "city" => "Paris" }}
@@ -248,7 +248,7 @@ class TestJSONEncoding < ActiveSupport::TestCase
   end
 
   def test_enumerable_should_pass_encoding_options_to_children_in_to_json
-    json = People.new.each.to_json :only => [:address, :city]
+    json = People.new.each.to_json only: [:address, :city]
 
     assert_equal(%([{"address":{"city":"London"}},{"address":{"city":"Paris"}}]), json)
   end
diff --git a/activesupport/test/json/encoding_test_cases.rb b/activesupport/test/json/encoding_test_cases.rb
index e7c0abda3e..ac0e2b2b05 100644
--- a/activesupport/test/json/encoding_test_cases.rb
+++ b/activesupport/test/json/encoding_test_cases.rb
@@ -9,7 +9,7 @@ module JSONTest
 
   class Hashlike
     def to_hash
-      { :foo => "hello", :bar => "world" }
+      { foo: "hello", bar: "world" }
     end
   end
 
@@ -70,7 +70,7 @@ module JSONTest
                      [ Custom.new(nil), "null" ],
                      [ Custom.new(:a), '"a"' ],
                      [ Custom.new([ :foo, "bar" ]), '["foo","bar"]' ],
-                     [ Custom.new({ :foo => "hello", :bar => "world" }), '{"bar":"world","foo":"hello"}' ],
+                     [ Custom.new({ foo: "hello", bar: "world" }), '{"bar":"world","foo":"hello"}' ],
                      [ Custom.new(Hashlike.new), '{"bar":"world","foo":"hello"}' ],
                      [ Custom.new(Custom.new(Custom.new(:a))), '"a"' ]]
 
diff --git a/activesupport/test/key_generator_test.rb b/activesupport/test/key_generator_test.rb
index 87e9ca7782..705537007a 100644
--- a/activesupport/test/key_generator_test.rb
+++ b/activesupport/test/key_generator_test.rb
@@ -13,7 +13,7 @@ require "active_support/json"
 class KeyGeneratorTest < ActiveSupport::TestCase
   def setup
     @secret    = SecureRandom.hex(64)
-    @generator = ActiveSupport::KeyGenerator.new(@secret, :iterations=>2)
+    @generator = ActiveSupport::KeyGenerator.new(@secret, iterations: 2)
   end
 
   test "Generating a key of the default length" do
@@ -47,7 +47,7 @@ end
 class CachingKeyGeneratorTest < ActiveSupport::TestCase
   def setup
     @secret    = SecureRandom.hex(64)
-    @generator = ActiveSupport::KeyGenerator.new(@secret, :iterations=>2)
+    @generator = ActiveSupport::KeyGenerator.new(@secret, iterations: 2)
     @caching_generator = ActiveSupport::CachingKeyGenerator.new(@generator)
   end
 
diff --git a/activesupport/test/lazy_load_hooks_test.rb b/activesupport/test/lazy_load_hooks_test.rb
index 1664ee8c92..d08efa429a 100644
--- a/activesupport/test/lazy_load_hooks_test.rb
+++ b/activesupport/test/lazy_load_hooks_test.rb
@@ -63,7 +63,7 @@ class LazyLoadHooksTest < ActiveSupport::TestCase
 
   def test_hook_with_yield_true
     i = 0
-    ActiveSupport.on_load(:contextual_yield, :yield => true) do |obj|
+    ActiveSupport.on_load(:contextual_yield, yield: true) do |obj|
       i += obj.incr + incr_amt
     end
     assert_equal 0, i
@@ -75,7 +75,7 @@ class LazyLoadHooksTest < ActiveSupport::TestCase
     i = 0
     ActiveSupport.run_load_hooks(:contextual_yield_after, FakeContext.new(2))
     assert_equal 0, i
-    ActiveSupport.on_load(:contextual_yield_after, :yield => true) do |obj|
+    ActiveSupport.on_load(:contextual_yield_after, yield: true) do |obj|
       i += obj.incr + incr_amt
     end
     assert_equal 7, i
diff --git a/activesupport/test/message_encryptor_test.rb b/activesupport/test/message_encryptor_test.rb
index 14cfaac083..3d9f90f1cc 100644
--- a/activesupport/test/message_encryptor_test.rb
+++ b/activesupport/test/message_encryptor_test.rb
@@ -16,9 +16,9 @@ class MessageEncryptorTest < ActiveSupport::TestCase
 
   def setup
     @secret    = SecureRandom.random_bytes(32)
-    @verifier  = ActiveSupport::MessageVerifier.new(@secret, :serializer => ActiveSupport::MessageEncryptor::NullSerializer)
+    @verifier  = ActiveSupport::MessageVerifier.new(@secret, serializer: ActiveSupport::MessageEncryptor::NullSerializer)
     @encryptor = ActiveSupport::MessageEncryptor.new(@secret)
-    @data = { :some => "data", :now => Time.local(2010) }
+    @data = { some: "data", now: Time.local(2010) }
   end
 
   def test_encrypting_twice_yields_differing_cipher_text
@@ -51,7 +51,7 @@ class MessageEncryptorTest < ActiveSupport::TestCase
   def test_alternative_serialization_method
     prev = ActiveSupport.use_standard_json_time_format
     ActiveSupport.use_standard_json_time_format = true
-    encryptor = ActiveSupport::MessageEncryptor.new(SecureRandom.random_bytes(32), SecureRandom.random_bytes(128), :serializer => JSONSerializer.new)
+    encryptor = ActiveSupport::MessageEncryptor.new(SecureRandom.random_bytes(32), SecureRandom.random_bytes(128), serializer: JSONSerializer.new)
     message = encryptor.encrypt_and_sign({ :foo => 123, "bar" => Time.utc(2010) })
     exp = { "foo" => 123, "bar" => "2010-01-01T00:00:00.000Z" }
     assert_equal exp, encryptor.decrypt_and_verify(message)
diff --git a/activesupport/test/message_verifier_test.rb b/activesupport/test/message_verifier_test.rb
index 29fa8d9b00..3cea0c71cc 100644
--- a/activesupport/test/message_verifier_test.rb
+++ b/activesupport/test/message_verifier_test.rb
@@ -17,7 +17,7 @@ class MessageVerifierTest < ActiveSupport::TestCase
 
   def setup
     @verifier = ActiveSupport::MessageVerifier.new("Hey, I'm a secret!")
-    @data = { :some => "data", :now => Time.local(2010) }
+    @data = { some: "data", now: Time.local(2010) }
   end
 
   def test_valid_message
@@ -49,7 +49,7 @@ class MessageVerifierTest < ActiveSupport::TestCase
   def test_alternative_serialization_method
     prev = ActiveSupport.use_standard_json_time_format
     ActiveSupport.use_standard_json_time_format = true
-    verifier = ActiveSupport::MessageVerifier.new("Hey, I'm a secret!", :serializer => JSONSerializer.new)
+    verifier = ActiveSupport::MessageVerifier.new("Hey, I'm a secret!", serializer: JSONSerializer.new)
     message = verifier.generate({ :foo => 123, "bar" => Time.utc(2010) })
     exp = { "foo" => 123, "bar" => "2010-01-01T00:00:00.000Z" }
     assert_equal exp, verifier.verified(message)
diff --git a/activesupport/test/multibyte_chars_test.rb b/activesupport/test/multibyte_chars_test.rb
index da3c2f1c6d..81f05dcd5b 100644
--- a/activesupport/test/multibyte_chars_test.rb
+++ b/activesupport/test/multibyte_chars_test.rb
@@ -723,8 +723,8 @@ class MultibyteCharsExtrasTest < ActiveSupport::TestCase
   def string_from_classes(classes)
     # Characters from the character classes as described in UAX #29
     character_from_class = {
-      :l => 0x1100, :v => 0x1160, :t => 0x11A8, :lv => 0xAC00, :lvt => 0xAC01, :cr => 0x000D, :lf => 0x000A,
-      :extend => 0x094D, :n => 0x64, :spacingmark => 0x0903, :r => 0x1F1E6, :control => 0x0001
+      l: 0x1100, v: 0x1160, t: 0x11A8, lv: 0xAC00, lvt: 0xAC01, cr: 0x000D, lf: 0x000A,
+      extend: 0x094D, n: 0x64, spacingmark: 0x0903, r: 0x1F1E6, control: 0x0001
     }
     classes.collect do |k|
       character_from_class[k.intern]
diff --git a/activesupport/test/notifications/instrumenter_test.rb b/activesupport/test/notifications/instrumenter_test.rb
index fbbd320667..e454e6897b 100644
--- a/activesupport/test/notifications/instrumenter_test.rb
+++ b/activesupport/test/notifications/instrumenter_test.rb
@@ -22,7 +22,7 @@ module ActiveSupport
         super
         @notifier     = TestNotifier.new
         @instrumenter = Instrumenter.new @notifier
-        @payload      =  { :foo => Object.new }
+        @payload      =  { foo: Object.new }
       end
 
       def test_instrument
@@ -39,7 +39,7 @@ module ActiveSupport
         assert_equal 1, notifier.finishes.size
         name, _, payload = notifier.finishes.first
         assert_equal "awesome", name
-        assert_equal Hash[:result => 2], payload
+        assert_equal Hash[result: 2], payload
       end
 
       def test_start
diff --git a/activesupport/test/notifications_test.rb b/activesupport/test/notifications_test.rb
index 7e0fe20291..106aa9c892 100644
--- a/activesupport/test/notifications_test.rb
+++ b/activesupport/test/notifications_test.rb
@@ -188,7 +188,7 @@ module Notifications
   end
 
   class InstrumentationTest < TestCase
-    delegate :instrument, :to => ActiveSupport::Notifications
+    delegate :instrument, to: ActiveSupport::Notifications
 
     def test_instrument_returns_block_result
       assert_equal 2, instrument(:awesome) { 1 + 1 }
@@ -198,7 +198,7 @@ module Notifications
       assert_equal 2, instrument(:awesome) { |p| p[:result] = 1 + 1 }
       assert_equal 1, @events.size
       assert_equal :awesome, @events.first.name
-      assert_equal Hash[:result => 2], @events.first.payload
+      assert_equal Hash[result: 2], @events.first.payload
     end
 
     def test_instrumenter_exposes_its_id
@@ -206,24 +206,24 @@ module Notifications
     end
 
     def test_nested_events_can_be_instrumented
-      instrument(:awesome, :payload => "notifications") do
-        instrument(:wot, :payload => "child") do
+      instrument(:awesome, payload: "notifications") do
+        instrument(:wot, payload: "child") do
           1 + 1
         end
 
         assert_equal 1, @events.size
         assert_equal :wot, @events.first.name
-        assert_equal Hash[:payload => "child"], @events.first.payload
+        assert_equal Hash[payload: "child"], @events.first.payload
       end
 
       assert_equal 2, @events.size
       assert_equal :awesome, @events.last.name
-      assert_equal Hash[:payload => "notifications"], @events.last.payload
+      assert_equal Hash[payload: "notifications"], @events.last.payload
     end
 
     def test_instrument_publishes_when_exception_is_raised
       begin
-        instrument(:awesome, :payload => "notifications") do
+        instrument(:awesome, payload: "notifications") do
           raise "FAIL"
         end
       rescue RuntimeError => e
@@ -231,15 +231,15 @@ module Notifications
       end
 
       assert_equal 1, @events.size
-      assert_equal Hash[:payload => "notifications",
-        :exception => ["RuntimeError", "FAIL"], :exception_object => e], @events.last.payload
+      assert_equal Hash[payload: "notifications",
+        exception: ["RuntimeError", "FAIL"], exception_object: e], @events.last.payload
     end
 
     def test_event_is_pushed_even_without_block
-      instrument(:awesome, :payload => "notifications")
+      instrument(:awesome, payload: "notifications")
       assert_equal 1, @events.size
       assert_equal :awesome, @events.last.name
-      assert_equal Hash[:payload => "notifications"], @events.last.payload
+      assert_equal Hash[payload: "notifications"], @events.last.payload
     end
   end
 
@@ -254,8 +254,8 @@ module Notifications
     end
 
     def test_events_consumes_information_given_as_payload
-      event = event(:foo, Time.now, Time.now + 1, random_id, :payload => :bar)
-      assert_equal Hash[:payload => :bar], event.payload
+      event = event(:foo, Time.now, Time.now + 1, random_id, payload: :bar)
+      assert_equal Hash[payload: :bar], event.payload
     end
 
     def test_event_is_parent_based_on_children
diff --git a/activesupport/test/number_helper_i18n_test.rb b/activesupport/test/number_helper_i18n_test.rb
index 82e036a020..f9d6dcf7b2 100644
--- a/activesupport/test/number_helper_i18n_test.rb
+++ b/activesupport/test/number_helper_i18n_test.rb
@@ -7,40 +7,40 @@ module ActiveSupport
 
     def setup
       I18n.backend.store_translations "ts",
-        :number => {
-        :format => { :precision => 3, :delimiter => ",", :separator => ".", :significant => false, :strip_insignificant_zeros => false },
-        :currency => { :format => { :unit => "&$", :format => "%u - %n", :negative_format => "(%u - %n)", :precision => 2 } },
-        :human => {
-          :format => {
-            :precision => 2,
-            :significant => true,
-            :strip_insignificant_zeros => true
+        number: {
+        format: { precision: 3, delimiter: ",", separator: ".", significant: false, strip_insignificant_zeros: false },
+        currency: { format: { unit: "&$", format: "%u - %n", negative_format: "(%u - %n)", precision: 2 } },
+        human: {
+          format: {
+            precision: 2,
+            significant: true,
+            strip_insignificant_zeros: true
           },
-          :storage_units => {
-            :format => "%n %u",
-            :units => {
-              :byte => "b",
-              :kb => "k"
+          storage_units: {
+            format: "%n %u",
+            units: {
+              byte: "b",
+              kb: "k"
             }
           },
-          :decimal_units => {
-            :format => "%n %u",
-            :units => {
-              :deci => {:one => "Tenth", :other => "Tenths"},
-              :unit =>  "u",
-              :ten => {:one => "Ten", :other => "Tens"},
-              :thousand => "t",
-              :million => "m",
-              :billion =>"b",
-              :trillion =>"t" ,
-              :quadrillion =>"q"
+          decimal_units: {
+            format: "%n %u",
+            units: {
+              deci: {one: "Tenth", other: "Tenths"},
+              unit: "u",
+              ten: {one: "Ten", other: "Tens"},
+              thousand: "t",
+              million: "m",
+              billion: "b",
+              trillion: "t" ,
+              quadrillion: "q"
             }
           }
         },
-        :percentage => { :format => {:delimiter => "", :precision => 2, :strip_insignificant_zeros => true} },
-        :precision => { :format => {:delimiter => "", :significant => true} }
+        percentage: { format: {delimiter: "", precision: 2, strip_insignificant_zeros: true} },
+        precision: { format: {delimiter: "", significant: true} }
       },
-      :custom_units_for_number_to_human => {:mili => "mm", :centi => "cm", :deci => "dm", :unit => "m", :ten => "dam", :hundred => "hm", :thousand => "km"}
+      custom_units_for_number_to_human: {mili: "mm", centi: "cm", deci: "dm", unit: "m", ten: "dam", hundred: "hm", thousand: "km"}
     end
 
     def teardown
@@ -48,101 +48,101 @@ module ActiveSupport
     end
 
     def test_number_to_i18n_currency
-      assert_equal("&$ - 10.00", number_to_currency(10, :locale => "ts"))
-      assert_equal("(&$ - 10.00)", number_to_currency(-10, :locale => "ts"))
-      assert_equal("-10.00 - &$", number_to_currency(-10, :locale => "ts", :format => "%n - %u"))
+      assert_equal("&$ - 10.00", number_to_currency(10, locale: "ts"))
+      assert_equal("(&$ - 10.00)", number_to_currency(-10, locale: "ts"))
+      assert_equal("-10.00 - &$", number_to_currency(-10, locale: "ts", format: "%n - %u"))
     end
 
     def test_number_to_currency_with_empty_i18n_store
-      assert_equal("$10.00", number_to_currency(10, :locale => "empty"))
-      assert_equal("-$10.00", number_to_currency(-10, :locale => "empty"))
+      assert_equal("$10.00", number_to_currency(10, locale: "empty"))
+      assert_equal("-$10.00", number_to_currency(-10, locale: "empty"))
     end
 
     def test_locale_default_format_has_precedence_over_helper_defaults
       I18n.backend.store_translations "ts",
-        { :number => { :format => { :separator => ";" } } }
+        { number: { format: { separator: ";" } } }
 
-      assert_equal("&$ - 10;00", number_to_currency(10, :locale => "ts"))
+      assert_equal("&$ - 10;00", number_to_currency(10, locale: "ts"))
     end
 
     def test_number_to_currency_without_currency_negative_format
-      I18n.backend.store_translations "no_negative_format", :number => {
-        :currency => { :format => { :unit => "@", :format => "%n %u" } }
+      I18n.backend.store_translations "no_negative_format", number: {
+        currency: { format: { unit: "@", format: "%n %u" } }
       }
 
-      assert_equal("-10.00 @", number_to_currency(-10, :locale => "no_negative_format"))
+      assert_equal("-10.00 @", number_to_currency(-10, locale: "no_negative_format"))
     end
 
     def test_number_with_i18n_precision
       #Delimiter was set to ""
-      assert_equal("10000", number_to_rounded(10000, :locale => "ts"))
+      assert_equal("10000", number_to_rounded(10000, locale: "ts"))
 
       #Precision inherited and significant was set
-      assert_equal("1.00", number_to_rounded(1.0, :locale => "ts"))
+      assert_equal("1.00", number_to_rounded(1.0, locale: "ts"))
     end
 
     def test_number_with_i18n_precision_and_empty_i18n_store
-      assert_equal("123456789.123", number_to_rounded(123456789.123456789, :locale => "empty"))
-      assert_equal("1.000", number_to_rounded(1.0000, :locale => "empty"))
+      assert_equal("123456789.123", number_to_rounded(123456789.123456789, locale: "empty"))
+      assert_equal("1.000", number_to_rounded(1.0000, locale: "empty"))
     end
 
     def test_number_with_i18n_delimiter
       #Delimiter "," and separator "."
-      assert_equal("1,000,000.234", number_to_delimited(1000000.234, :locale => "ts"))
+      assert_equal("1,000,000.234", number_to_delimited(1000000.234, locale: "ts"))
     end
 
     def test_number_with_i18n_delimiter_and_empty_i18n_store
-      assert_equal("1,000,000.234", number_to_delimited(1000000.234, :locale => "empty"))
+      assert_equal("1,000,000.234", number_to_delimited(1000000.234, locale: "empty"))
     end
 
     def test_number_to_i18n_percentage
       # to see if strip_insignificant_zeros is true
-      assert_equal("1%", number_to_percentage(1, :locale => "ts"))
+      assert_equal("1%", number_to_percentage(1, locale: "ts"))
       # precision is 2, significant should be inherited
-      assert_equal("1.24%", number_to_percentage(1.2434, :locale => "ts"))
+      assert_equal("1.24%", number_to_percentage(1.2434, locale: "ts"))
       # no delimiter
-      assert_equal("12434%", number_to_percentage(12434, :locale => "ts"))
+      assert_equal("12434%", number_to_percentage(12434, locale: "ts"))
     end
 
     def test_number_to_i18n_percentage_and_empty_i18n_store
-      assert_equal("1.000%", number_to_percentage(1, :locale => "empty"))
-      assert_equal("1.243%", number_to_percentage(1.2434, :locale => "empty"))
-      assert_equal("12434.000%", number_to_percentage(12434, :locale => "empty"))
+      assert_equal("1.000%", number_to_percentage(1, locale: "empty"))
+      assert_equal("1.243%", number_to_percentage(1.2434, locale: "empty"))
+      assert_equal("12434.000%", number_to_percentage(12434, locale: "empty"))
     end
 
     def test_number_to_i18n_human_size
       #b for bytes and k for kbytes
-      assert_equal("2 k", number_to_human_size(2048, :locale => "ts"))
-      assert_equal("42 b", number_to_human_size(42, :locale => "ts"))
+      assert_equal("2 k", number_to_human_size(2048, locale: "ts"))
+      assert_equal("42 b", number_to_human_size(42, locale: "ts"))
     end
 
     def test_number_to_i18n_human_size_with_empty_i18n_store
-      assert_equal("2 KB", number_to_human_size(2048, :locale => "empty"))
-      assert_equal("42 Bytes", number_to_human_size(42, :locale => "empty"))
+      assert_equal("2 KB", number_to_human_size(2048, locale: "empty"))
+      assert_equal("42 Bytes", number_to_human_size(42, locale: "empty"))
     end
 
     def test_number_to_human_with_default_translation_scope
       #Using t for thousand
-      assert_equal "2 t", number_to_human(2000, :locale => "ts")
+      assert_equal "2 t", number_to_human(2000, locale: "ts")
       #Significant was set to true with precision 2, using b for billion
-      assert_equal "1.2 b", number_to_human(1234567890, :locale => "ts")
+      assert_equal "1.2 b", number_to_human(1234567890, locale: "ts")
       #Using pluralization (Ten/Tens and Tenth/Tenths)
-      assert_equal "1 Tenth", number_to_human(0.1, :locale => "ts")
-      assert_equal "1.3 Tenth", number_to_human(0.134, :locale => "ts")
-      assert_equal "2 Tenths", number_to_human(0.2, :locale => "ts")
-      assert_equal "1 Ten", number_to_human(10, :locale => "ts")
-      assert_equal "1.2 Ten", number_to_human(12, :locale => "ts")
-      assert_equal "2 Tens", number_to_human(20, :locale => "ts")
+      assert_equal "1 Tenth", number_to_human(0.1, locale: "ts")
+      assert_equal "1.3 Tenth", number_to_human(0.134, locale: "ts")
+      assert_equal "2 Tenths", number_to_human(0.2, locale: "ts")
+      assert_equal "1 Ten", number_to_human(10, locale: "ts")
+      assert_equal "1.2 Ten", number_to_human(12, locale: "ts")
+      assert_equal "2 Tens", number_to_human(20, locale: "ts")
     end
 
     def test_number_to_human_with_empty_i18n_store
-      assert_equal "2 Thousand", number_to_human(2000, :locale => "empty")
-      assert_equal "1.23 Billion", number_to_human(1234567890, :locale => "empty")
+      assert_equal "2 Thousand", number_to_human(2000, locale: "empty")
+      assert_equal "1.23 Billion", number_to_human(1234567890, locale: "empty")
     end
 
     def test_number_to_human_with_custom_translation_scope
       #Significant was set to true with precision 2, with custom translated units
-      assert_equal "4.3 cm", number_to_human(0.0432, :locale => "ts", :units => :custom_units_for_number_to_human)
+      assert_equal "4.3 cm", number_to_human(0.0432, locale: "ts", units: :custom_units_for_number_to_human)
     end
   end
 end
diff --git a/activesupport/test/number_helper_test.rb b/activesupport/test/number_helper_test.rb
index 5f75436c87..fd566f8d21 100644
--- a/activesupport/test/number_helper_test.rb
+++ b/activesupport/test/number_helper_test.rb
@@ -46,17 +46,17 @@ module ActiveSupport
         [@instance_with_helpers, TestClassWithClassNumberHelpers, ActiveSupport::NumberHelper].each do |number_helper|
           assert_equal("555-1234", number_helper.number_to_phone(5551234))
           assert_equal("800-555-1212", number_helper.number_to_phone(8005551212))
-          assert_equal("(800) 555-1212", number_helper.number_to_phone(8005551212, {:area_code => true}))
-          assert_equal("", number_helper.number_to_phone("", {:area_code => true}))
-          assert_equal("800 555 1212", number_helper.number_to_phone(8005551212, {:delimiter => " "}))
-          assert_equal("(800) 555-1212 x 123", number_helper.number_to_phone(8005551212, {:area_code => true, :extension => 123}))
-          assert_equal("800-555-1212", number_helper.number_to_phone(8005551212, :extension => "  "))
-          assert_equal("555.1212", number_helper.number_to_phone(5551212, :delimiter => "."))
+          assert_equal("(800) 555-1212", number_helper.number_to_phone(8005551212, {area_code: true}))
+          assert_equal("", number_helper.number_to_phone("", {area_code: true}))
+          assert_equal("800 555 1212", number_helper.number_to_phone(8005551212, {delimiter: " "}))
+          assert_equal("(800) 555-1212 x 123", number_helper.number_to_phone(8005551212, {area_code: true, extension: 123}))
+          assert_equal("800-555-1212", number_helper.number_to_phone(8005551212, extension: "  "))
+          assert_equal("555.1212", number_helper.number_to_phone(5551212, delimiter: "."))
           assert_equal("800-555-1212", number_helper.number_to_phone("8005551212"))
-          assert_equal("+1-800-555-1212", number_helper.number_to_phone(8005551212, :country_code => 1))
-          assert_equal("+18005551212", number_helper.number_to_phone(8005551212, :country_code => 1, :delimiter => ""))
+          assert_equal("+1-800-555-1212", number_helper.number_to_phone(8005551212, country_code: 1))
+          assert_equal("+18005551212", number_helper.number_to_phone(8005551212, country_code: 1, delimiter: ""))
           assert_equal("22-555-1212", number_helper.number_to_phone(225551212))
-          assert_equal("+45-22-555-1212", number_helper.number_to_phone(225551212, :country_code => 45))
+          assert_equal("+45-22-555-1212", number_helper.number_to_phone(225551212, country_code: 45))
           assert_equal("(755) 6123-4567", number_helper.number_to_phone(75561234567, pattern: /(\d{3,4})(\d{4})(\d{4})/, area_code: true))
           assert_equal("133-1234-5678", number_helper.number_to_phone(13312345678, pattern: /(\d{3})(\d{4})(\d{4})/))
         end
@@ -67,28 +67,28 @@ module ActiveSupport
           assert_equal("$1,234,567,890.50", number_helper.number_to_currency(1234567890.50))
           assert_equal("$1,234,567,890.51", number_helper.number_to_currency(1234567890.506))
           assert_equal("-$1,234,567,890.50", number_helper.number_to_currency(-1234567890.50))
-          assert_equal("-$ 1,234,567,890.50", number_helper.number_to_currency(-1234567890.50, {:format => "%u %n"}))
-          assert_equal("($1,234,567,890.50)", number_helper.number_to_currency(-1234567890.50, {:negative_format => "(%u%n)"}))
-          assert_equal("$1,234,567,892", number_helper.number_to_currency(1234567891.50, {:precision => 0}))
-          assert_equal("$1,234,567,890.5", number_helper.number_to_currency(1234567890.50, {:precision => 1}))
-          assert_equal("&pound;1234567890,50", number_helper.number_to_currency(1234567890.50, {:unit => "&pound;", :separator => ",", :delimiter => ""}))
+          assert_equal("-$ 1,234,567,890.50", number_helper.number_to_currency(-1234567890.50, {format: "%u %n"}))
+          assert_equal("($1,234,567,890.50)", number_helper.number_to_currency(-1234567890.50, {negative_format: "(%u%n)"}))
+          assert_equal("$1,234,567,892", number_helper.number_to_currency(1234567891.50, {precision: 0}))
+          assert_equal("$1,234,567,890.5", number_helper.number_to_currency(1234567890.50, {precision: 1}))
+          assert_equal("&pound;1234567890,50", number_helper.number_to_currency(1234567890.50, {unit: "&pound;", separator: ",", delimiter: ""}))
           assert_equal("$1,234,567,890.50", number_helper.number_to_currency("1234567890.50"))
-          assert_equal("1,234,567,890.50 K&#269;", number_helper.number_to_currency("1234567890.50", {:unit => "K&#269;", :format => "%n %u"}))
-          assert_equal("1,234,567,890.50 - K&#269;", number_helper.number_to_currency("-1234567890.50", {:unit => "K&#269;", :format => "%n %u", :negative_format => "%n - %u"}))
-          assert_equal("0.00", number_helper.number_to_currency(+0.0, {:unit => "", :negative_format => "(%n)"}))
+          assert_equal("1,234,567,890.50 K&#269;", number_helper.number_to_currency("1234567890.50", {unit: "K&#269;", format: "%n %u"}))
+          assert_equal("1,234,567,890.50 - K&#269;", number_helper.number_to_currency("-1234567890.50", {unit: "K&#269;", format: "%n %u", negative_format: "%n - %u"}))
+          assert_equal("0.00", number_helper.number_to_currency(+0.0, {unit: "", negative_format: "(%n)"}))
         end
       end
 
       def test_number_to_percentage
         [@instance_with_helpers, TestClassWithClassNumberHelpers, ActiveSupport::NumberHelper].each do |number_helper|
           assert_equal("100.000%", number_helper.number_to_percentage(100))
-          assert_equal("100%", number_helper.number_to_percentage(100, {:precision => 0}))
-          assert_equal("302.06%", number_helper.number_to_percentage(302.0574, {:precision => 2}))
+          assert_equal("100%", number_helper.number_to_percentage(100, {precision: 0}))
+          assert_equal("302.06%", number_helper.number_to_percentage(302.0574, {precision: 2}))
           assert_equal("100.000%", number_helper.number_to_percentage("100"))
           assert_equal("1000.000%", number_helper.number_to_percentage("1000"))
-          assert_equal("123.4%", number_helper.number_to_percentage(123.400, :precision => 3, :strip_insignificant_zeros => true))
-          assert_equal("1.000,000%", number_helper.number_to_percentage(1000, :delimiter => ".", :separator => ","))
-          assert_equal("1000.000  %", number_helper.number_to_percentage(1000, :format => "%n  %"))
+          assert_equal("123.4%", number_helper.number_to_percentage(123.400, precision: 3, strip_insignificant_zeros: true))
+          assert_equal("1.000,000%", number_helper.number_to_percentage(1000, delimiter: ".", separator: ","))
+          assert_equal("1000.000  %", number_helper.number_to_percentage(1000, format: "%n  %"))
           assert_equal("98a%", number_helper.number_to_percentage("98a"))
           assert_equal("NaN%", number_helper.number_to_percentage(Float::NAN))
           assert_equal("Inf%", number_helper.number_to_percentage(Float::INFINITY))
@@ -122,9 +122,9 @@ module ActiveSupport
 
       def test_to_delimited_with_options_hash
         [@instance_with_helpers, TestClassWithClassNumberHelpers, ActiveSupport::NumberHelper].each do |number_helper|
-          assert_equal "12 345 678", number_helper.number_to_delimited(12345678, :delimiter => " ")
-          assert_equal "12,345,678-05", number_helper.number_to_delimited(12345678.05, :separator => "-")
-          assert_equal "12.345.678,05", number_helper.number_to_delimited(12345678.05, :separator => ",", :delimiter => ".")
+          assert_equal "12 345 678", number_helper.number_to_delimited(12345678, delimiter: " ")
+          assert_equal "12,345,678-05", number_helper.number_to_delimited(12345678.05, separator: "-")
+          assert_equal "12.345.678,05", number_helper.number_to_delimited(12345678.05, separator: ",", delimiter: ".")
         end
       end
 
@@ -132,77 +132,77 @@ module ActiveSupport
         [@instance_with_helpers, TestClassWithClassNumberHelpers, ActiveSupport::NumberHelper].each do |number_helper|
           assert_equal("-111.235", number_helper.number_to_rounded(-111.2346))
           assert_equal("111.235", number_helper.number_to_rounded(111.2346))
-          assert_equal("31.83", number_helper.number_to_rounded(31.825, :precision => 2))
-          assert_equal("111.23", number_helper.number_to_rounded(111.2346, :precision => 2))
-          assert_equal("111.00", number_helper.number_to_rounded(111, :precision => 2))
+          assert_equal("31.83", number_helper.number_to_rounded(31.825, precision: 2))
+          assert_equal("111.23", number_helper.number_to_rounded(111.2346, precision: 2))
+          assert_equal("111.00", number_helper.number_to_rounded(111, precision: 2))
           assert_equal("111.235", number_helper.number_to_rounded("111.2346"))
-          assert_equal("31.83", number_helper.number_to_rounded("31.825", :precision => 2))
-          assert_equal("3268", number_helper.number_to_rounded((32.6751 * 100.00), :precision => 0))
-          assert_equal("112", number_helper.number_to_rounded(111.50, :precision => 0))
-          assert_equal("1234567892", number_helper.number_to_rounded(1234567891.50, :precision => 0))
-          assert_equal("0", number_helper.number_to_rounded(0, :precision => 0))
-          assert_equal("0.00100", number_helper.number_to_rounded(0.001, :precision => 5))
-          assert_equal("0.001", number_helper.number_to_rounded(0.00111, :precision => 3))
-          assert_equal("10.00", number_helper.number_to_rounded(9.995, :precision => 2))
-          assert_equal("11.00", number_helper.number_to_rounded(10.995, :precision => 2))
-          assert_equal("0.00", number_helper.number_to_rounded(-0.001, :precision => 2))
-
-          assert_equal("111.23460000000000000000", number_helper.number_to_rounded(111.2346, :precision => 20))
-          assert_equal("111.23460000000000000000", number_helper.number_to_rounded(Rational(1112346, 10000), :precision => 20))
-          assert_equal("111.23460000000000000000", number_helper.number_to_rounded("111.2346", :precision => 20))
-          assert_equal("111.23460000000000000000", number_helper.number_to_rounded(BigDecimal(111.2346, Float::DIG), :precision => 20))
-          assert_equal("111.2346" + "0"*96, number_helper.number_to_rounded("111.2346", :precision => 100))
-          assert_equal("111.2346", number_helper.number_to_rounded(Rational(1112346, 10000), :precision => 4))
-          assert_equal("0.00", number_helper.number_to_rounded(Rational(0, 1), :precision => 2))
+          assert_equal("31.83", number_helper.number_to_rounded("31.825", precision: 2))
+          assert_equal("3268", number_helper.number_to_rounded((32.6751 * 100.00), precision: 0))
+          assert_equal("112", number_helper.number_to_rounded(111.50, precision: 0))
+          assert_equal("1234567892", number_helper.number_to_rounded(1234567891.50, precision: 0))
+          assert_equal("0", number_helper.number_to_rounded(0, precision: 0))
+          assert_equal("0.00100", number_helper.number_to_rounded(0.001, precision: 5))
+          assert_equal("0.001", number_helper.number_to_rounded(0.00111, precision: 3))
+          assert_equal("10.00", number_helper.number_to_rounded(9.995, precision: 2))
+          assert_equal("11.00", number_helper.number_to_rounded(10.995, precision: 2))
+          assert_equal("0.00", number_helper.number_to_rounded(-0.001, precision: 2))
+
+          assert_equal("111.23460000000000000000", number_helper.number_to_rounded(111.2346, precision: 20))
+          assert_equal("111.23460000000000000000", number_helper.number_to_rounded(Rational(1112346, 10000), precision: 20))
+          assert_equal("111.23460000000000000000", number_helper.number_to_rounded("111.2346", precision: 20))
+          assert_equal("111.23460000000000000000", number_helper.number_to_rounded(BigDecimal(111.2346, Float::DIG), precision: 20))
+          assert_equal("111.2346" + "0"*96, number_helper.number_to_rounded("111.2346", precision: 100))
+          assert_equal("111.2346", number_helper.number_to_rounded(Rational(1112346, 10000), precision: 4))
+          assert_equal("0.00", number_helper.number_to_rounded(Rational(0, 1), precision: 2))
         end
       end
 
       def test_to_rounded_with_custom_delimiter_and_separator
         [@instance_with_helpers, TestClassWithClassNumberHelpers, ActiveSupport::NumberHelper].each do |number_helper|
-          assert_equal "31,83",       number_helper.number_to_rounded(31.825, :precision => 2, :separator => ",")
-          assert_equal "1.231,83",    number_helper.number_to_rounded(1231.825, :precision => 2, :separator => ",", :delimiter => ".")
+          assert_equal "31,83",       number_helper.number_to_rounded(31.825, precision: 2, separator: ",")
+          assert_equal "1.231,83",    number_helper.number_to_rounded(1231.825, precision: 2, separator: ",", delimiter: ".")
         end
       end
 
       def test_to_rounded_with_significant_digits
         [@instance_with_helpers, TestClassWithClassNumberHelpers, ActiveSupport::NumberHelper].each do |number_helper|
-          assert_equal "124000", number_helper.number_to_rounded(123987, :precision => 3, :significant => true)
-          assert_equal "120000000", number_helper.number_to_rounded(123987876, :precision => 2, :significant => true )
-          assert_equal "40000", number_helper.number_to_rounded("43523", :precision => 1, :significant => true )
-          assert_equal "9775", number_helper.number_to_rounded(9775, :precision => 4, :significant => true )
-          assert_equal "5.4", number_helper.number_to_rounded(5.3923, :precision => 2, :significant => true )
-          assert_equal "5", number_helper.number_to_rounded(5.3923, :precision => 1, :significant => true )
-          assert_equal "1", number_helper.number_to_rounded(1.232, :precision => 1, :significant => true )
-          assert_equal "7", number_helper.number_to_rounded(7, :precision => 1, :significant => true )
-          assert_equal "1", number_helper.number_to_rounded(1, :precision => 1, :significant => true )
-          assert_equal "53", number_helper.number_to_rounded(52.7923, :precision => 2, :significant => true )
-          assert_equal "9775.00", number_helper.number_to_rounded(9775, :precision => 6, :significant => true )
-          assert_equal "5.392900", number_helper.number_to_rounded(5.3929, :precision => 7, :significant => true )
-          assert_equal "0.0", number_helper.number_to_rounded(0, :precision => 2, :significant => true )
-          assert_equal "0", number_helper.number_to_rounded(0, :precision => 1, :significant => true )
-          assert_equal "0.0001", number_helper.number_to_rounded(0.0001, :precision => 1, :significant => true )
-          assert_equal "0.000100", number_helper.number_to_rounded(0.0001, :precision => 3, :significant => true )
-          assert_equal "0.0001", number_helper.number_to_rounded(0.0001111, :precision => 1, :significant => true )
-          assert_equal "10.0", number_helper.number_to_rounded(9.995, :precision => 3, :significant => true)
-          assert_equal "9.99", number_helper.number_to_rounded(9.994, :precision => 3, :significant => true)
-          assert_equal "11.0", number_helper.number_to_rounded(10.995, :precision => 3, :significant => true)
-
-          assert_equal "9775.0000000000000000", number_helper.number_to_rounded(9775, :precision => 20, :significant => true )
-          assert_equal "9775.0000000000000000", number_helper.number_to_rounded(9775.0, :precision => 20, :significant => true )
-          assert_equal "9775.0000000000000000", number_helper.number_to_rounded(Rational(9775, 1), :precision => 20, :significant => true )
-          assert_equal "97.750000000000000000", number_helper.number_to_rounded(Rational(9775, 100), :precision => 20, :significant => true )
-          assert_equal "9775.0000000000000000", number_helper.number_to_rounded(BigDecimal(9775), :precision => 20, :significant => true )
-          assert_equal "9775.0000000000000000", number_helper.number_to_rounded("9775", :precision => 20, :significant => true )
-          assert_equal "9775." + "0"*96, number_helper.number_to_rounded("9775", :precision => 100, :significant => true )
-          assert_equal("97.7", number_helper.number_to_rounded(Rational(9772, 100), :precision => 3, :significant => true))
+          assert_equal "124000", number_helper.number_to_rounded(123987, precision: 3, significant: true)
+          assert_equal "120000000", number_helper.number_to_rounded(123987876, precision: 2, significant: true )
+          assert_equal "40000", number_helper.number_to_rounded("43523", precision: 1, significant: true )
+          assert_equal "9775", number_helper.number_to_rounded(9775, precision: 4, significant: true )
+          assert_equal "5.4", number_helper.number_to_rounded(5.3923, precision: 2, significant: true )
+          assert_equal "5", number_helper.number_to_rounded(5.3923, precision: 1, significant: true )
+          assert_equal "1", number_helper.number_to_rounded(1.232, precision: 1, significant: true )
+          assert_equal "7", number_helper.number_to_rounded(7, precision: 1, significant: true )
+          assert_equal "1", number_helper.number_to_rounded(1, precision: 1, significant: true )
+          assert_equal "53", number_helper.number_to_rounded(52.7923, precision: 2, significant: true )
+          assert_equal "9775.00", number_helper.number_to_rounded(9775, precision: 6, significant: true )
+          assert_equal "5.392900", number_helper.number_to_rounded(5.3929, precision: 7, significant: true )
+          assert_equal "0.0", number_helper.number_to_rounded(0, precision: 2, significant: true )
+          assert_equal "0", number_helper.number_to_rounded(0, precision: 1, significant: true )
+          assert_equal "0.0001", number_helper.number_to_rounded(0.0001, precision: 1, significant: true )
+          assert_equal "0.000100", number_helper.number_to_rounded(0.0001, precision: 3, significant: true )
+          assert_equal "0.0001", number_helper.number_to_rounded(0.0001111, precision: 1, significant: true )
+          assert_equal "10.0", number_helper.number_to_rounded(9.995, precision: 3, significant: true)
+          assert_equal "9.99", number_helper.number_to_rounded(9.994, precision: 3, significant: true)
+          assert_equal "11.0", number_helper.number_to_rounded(10.995, precision: 3, significant: true)
+
+          assert_equal "9775.0000000000000000", number_helper.number_to_rounded(9775, precision: 20, significant: true )
+          assert_equal "9775.0000000000000000", number_helper.number_to_rounded(9775.0, precision: 20, significant: true )
+          assert_equal "9775.0000000000000000", number_helper.number_to_rounded(Rational(9775, 1), precision: 20, significant: true )
+          assert_equal "97.750000000000000000", number_helper.number_to_rounded(Rational(9775, 100), precision: 20, significant: true )
+          assert_equal "9775.0000000000000000", number_helper.number_to_rounded(BigDecimal(9775), precision: 20, significant: true )
+          assert_equal "9775.0000000000000000", number_helper.number_to_rounded("9775", precision: 20, significant: true )
+          assert_equal "9775." + "0"*96, number_helper.number_to_rounded("9775", precision: 100, significant: true )
+          assert_equal("97.7", number_helper.number_to_rounded(Rational(9772, 100), precision: 3, significant: true))
         end
       end
 
       def test_to_rounded_with_strip_insignificant_zeros
         [@instance_with_helpers, TestClassWithClassNumberHelpers, ActiveSupport::NumberHelper].each do |number_helper|
-          assert_equal "9775.43", number_helper.number_to_rounded(9775.43, :precision => 4, :strip_insignificant_zeros => true )
-          assert_equal "9775.2", number_helper.number_to_rounded(9775.2, :precision => 6, :significant => true, :strip_insignificant_zeros => true )
-          assert_equal "0", number_helper.number_to_rounded(0, :precision => 6, :significant => true, :strip_insignificant_zeros => true )
+          assert_equal "9775.43", number_helper.number_to_rounded(9775.43, precision: 4, strip_insignificant_zeros: true )
+          assert_equal "9775.2", number_helper.number_to_rounded(9775.2, precision: 6, significant: true, strip_insignificant_zeros: true )
+          assert_equal "0", number_helper.number_to_rounded(0, precision: 6, significant: true, strip_insignificant_zeros: true )
         end
       end
 
@@ -210,9 +210,9 @@ module ActiveSupport
         [@instance_with_helpers, TestClassWithClassNumberHelpers, ActiveSupport::NumberHelper].each do |number_helper|
           # Zero precision with significant is a mistake (would always return zero),
           # so we treat it as if significant was false (increases backwards compatibility for number_to_human_size)
-          assert_equal "124", number_helper.number_to_rounded(123.987, :precision => 0, :significant => true)
-          assert_equal "12", number_helper.number_to_rounded(12, :precision => 0, :significant => true )
-          assert_equal "12", number_helper.number_to_rounded("12.3", :precision => 0, :significant => true )
+          assert_equal "124", number_helper.number_to_rounded(123.987, precision: 0, significant: true)
+          assert_equal "12", number_helper.number_to_rounded(12, precision: 0, significant: true )
+          assert_equal "12", number_helper.number_to_rounded("12.3", precision: 0, significant: true )
         end
       end
 
@@ -234,12 +234,12 @@ module ActiveSupport
           assert_equal "444 KB",    number_helper.number_to_human_size(kilobytes(444))
           assert_equal "1020 MB",   number_helper.number_to_human_size(megabytes(1023))
           assert_equal "3 TB",      number_helper.number_to_human_size(terabytes(3))
-          assert_equal "1.2 MB",   number_helper.number_to_human_size(1234567, :precision => 2)
-          assert_equal "3 Bytes",   number_helper.number_to_human_size(3.14159265, :precision => 4)
+          assert_equal "1.2 MB",   number_helper.number_to_human_size(1234567, precision: 2)
+          assert_equal "3 Bytes",   number_helper.number_to_human_size(3.14159265, precision: 4)
           assert_equal "123 Bytes", number_helper.number_to_human_size("123")
-          assert_equal "1 KB",   number_helper.number_to_human_size(kilobytes(1.0123), :precision => 2)
-          assert_equal "1.01 KB",   number_helper.number_to_human_size(kilobytes(1.0100), :precision => 4)
-          assert_equal "10 KB",   number_helper.number_to_human_size(kilobytes(10.000), :precision => 4)
+          assert_equal "1 KB",   number_helper.number_to_human_size(kilobytes(1.0123), precision: 2)
+          assert_equal "1.01 KB",   number_helper.number_to_human_size(kilobytes(1.0100), precision: 4)
+          assert_equal "10 KB",   number_helper.number_to_human_size(kilobytes(10.000), precision: 4)
           assert_equal "1 Byte",   number_helper.number_to_human_size(1.1)
           assert_equal "10 Bytes", number_helper.number_to_human_size(10)
         end
@@ -248,43 +248,43 @@ module ActiveSupport
       def test_number_to_human_size_with_si_prefix
         assert_deprecated do
           [@instance_with_helpers, TestClassWithClassNumberHelpers, ActiveSupport::NumberHelper].each do |number_helper|
-            assert_equal "3 Bytes",    number_helper.number_to_human_size(3.14159265, :prefix => :si)
-            assert_equal "123 Bytes",  number_helper.number_to_human_size(123.0, :prefix => :si)
-            assert_equal "123 Bytes",  number_helper.number_to_human_size(123, :prefix => :si)
-            assert_equal "1.23 KB",    number_helper.number_to_human_size(1234, :prefix => :si)
-            assert_equal "12.3 KB",    number_helper.number_to_human_size(12345, :prefix => :si)
-            assert_equal "1.23 MB",    number_helper.number_to_human_size(1234567, :prefix => :si)
-            assert_equal "1.23 GB",    number_helper.number_to_human_size(1234567890, :prefix => :si)
-            assert_equal "1.23 TB",    number_helper.number_to_human_size(1234567890123, :prefix => :si)
-            assert_equal "1.23 PB",    number_helper.number_to_human_size(1234567890123456, :prefix => :si)
-            assert_equal "1.23 EB",    number_helper.number_to_human_size(1234567890123456789, :prefix => :si)
+            assert_equal "3 Bytes",    number_helper.number_to_human_size(3.14159265, prefix: :si)
+            assert_equal "123 Bytes",  number_helper.number_to_human_size(123.0, prefix: :si)
+            assert_equal "123 Bytes",  number_helper.number_to_human_size(123, prefix: :si)
+            assert_equal "1.23 KB",    number_helper.number_to_human_size(1234, prefix: :si)
+            assert_equal "12.3 KB",    number_helper.number_to_human_size(12345, prefix: :si)
+            assert_equal "1.23 MB",    number_helper.number_to_human_size(1234567, prefix: :si)
+            assert_equal "1.23 GB",    number_helper.number_to_human_size(1234567890, prefix: :si)
+            assert_equal "1.23 TB",    number_helper.number_to_human_size(1234567890123, prefix: :si)
+            assert_equal "1.23 PB",    number_helper.number_to_human_size(1234567890123456, prefix: :si)
+            assert_equal "1.23 EB",    number_helper.number_to_human_size(1234567890123456789, prefix: :si)
           end
         end
       end
 
       def test_number_to_human_size_with_options_hash
         [@instance_with_helpers, TestClassWithClassNumberHelpers, ActiveSupport::NumberHelper].each do |number_helper|
-          assert_equal "1.2 MB",   number_helper.number_to_human_size(1234567, :precision => 2)
-          assert_equal "3 Bytes",   number_helper.number_to_human_size(3.14159265, :precision => 4)
-          assert_equal "1 KB",   number_helper.number_to_human_size(kilobytes(1.0123), :precision => 2)
-          assert_equal "1.01 KB",   number_helper.number_to_human_size(kilobytes(1.0100), :precision => 4)
-          assert_equal "10 KB",     number_helper.number_to_human_size(kilobytes(10.000), :precision => 4)
-          assert_equal "1 TB", number_helper.number_to_human_size(1234567890123, :precision => 1)
-          assert_equal "500 MB", number_helper.number_to_human_size(524288000, :precision=>3)
-          assert_equal "10 MB", number_helper.number_to_human_size(9961472, :precision=>0)
-          assert_equal "40 KB", number_helper.number_to_human_size(41010, :precision => 1)
-          assert_equal "40 KB", number_helper.number_to_human_size(41100, :precision => 2)
-          assert_equal "1.0 KB",   number_helper.number_to_human_size(kilobytes(1.0123), :precision => 2, :strip_insignificant_zeros => false)
-          assert_equal "1.012 KB",   number_helper.number_to_human_size(kilobytes(1.0123), :precision => 3, :significant => false)
-          assert_equal "1 KB",   number_helper.number_to_human_size(kilobytes(1.0123), :precision => 0, :significant => true) #ignores significant it precision is 0
+          assert_equal "1.2 MB",   number_helper.number_to_human_size(1234567, precision: 2)
+          assert_equal "3 Bytes",   number_helper.number_to_human_size(3.14159265, precision: 4)
+          assert_equal "1 KB",   number_helper.number_to_human_size(kilobytes(1.0123), precision: 2)
+          assert_equal "1.01 KB",   number_helper.number_to_human_size(kilobytes(1.0100), precision: 4)
+          assert_equal "10 KB",     number_helper.number_to_human_size(kilobytes(10.000), precision: 4)
+          assert_equal "1 TB", number_helper.number_to_human_size(1234567890123, precision: 1)
+          assert_equal "500 MB", number_helper.number_to_human_size(524288000, precision: 3)
+          assert_equal "10 MB", number_helper.number_to_human_size(9961472, precision: 0)
+          assert_equal "40 KB", number_helper.number_to_human_size(41010, precision: 1)
+          assert_equal "40 KB", number_helper.number_to_human_size(41100, precision: 2)
+          assert_equal "1.0 KB",   number_helper.number_to_human_size(kilobytes(1.0123), precision: 2, strip_insignificant_zeros: false)
+          assert_equal "1.012 KB",   number_helper.number_to_human_size(kilobytes(1.0123), precision: 3, significant: false)
+          assert_equal "1 KB",   number_helper.number_to_human_size(kilobytes(1.0123), precision: 0, significant: true) #ignores significant it precision is 0
         end
       end
 
       def test_number_to_human_size_with_custom_delimiter_and_separator
         [@instance_with_helpers, TestClassWithClassNumberHelpers, ActiveSupport::NumberHelper].each do |number_helper|
-          assert_equal "1,01 KB",     number_helper.number_to_human_size(kilobytes(1.0123), :precision => 3, :separator => ",")
-          assert_equal "1,01 KB",     number_helper.number_to_human_size(kilobytes(1.0100), :precision => 4, :separator => ",")
-          assert_equal "1.000,1 TB",  number_helper.number_to_human_size(terabytes(1000.1), :precision => 5, :delimiter => ".", :separator => ",")
+          assert_equal "1,01 KB",     number_helper.number_to_human_size(kilobytes(1.0123), precision: 3, separator: ",")
+          assert_equal "1,01 KB",     number_helper.number_to_human_size(kilobytes(1.0100), precision: 4, separator: ",")
+          assert_equal "1.000,1 TB",  number_helper.number_to_human_size(terabytes(1000.1), precision: 5, delimiter: ".", separator: ",")
         end
       end
 
@@ -302,13 +302,13 @@ module ActiveSupport
           assert_equal "1.23 Trillion", number_helper.number_to_human(1234567890123)
           assert_equal "1.23 Quadrillion", number_helper.number_to_human(1234567890123456)
           assert_equal "1230 Quadrillion", number_helper.number_to_human(1234567890123456789)
-          assert_equal "490 Thousand", number_helper.number_to_human(489939, :precision => 2)
-          assert_equal "489.9 Thousand", number_helper.number_to_human(489939, :precision => 4)
-          assert_equal "489 Thousand", number_helper.number_to_human(489000, :precision => 4)
-          assert_equal "489.0 Thousand", number_helper.number_to_human(489000, :precision => 4, :strip_insignificant_zeros => false)
-          assert_equal "1.2346 Million", number_helper.number_to_human(1234567, :precision => 4, :significant => false)
-          assert_equal "1,2 Million", number_helper.number_to_human(1234567, :precision => 1, :significant => false, :separator => ",")
-          assert_equal "1 Million", number_helper.number_to_human(1234567, :precision => 0, :significant => true, :separator => ",") #significant forced to false
+          assert_equal "490 Thousand", number_helper.number_to_human(489939, precision: 2)
+          assert_equal "489.9 Thousand", number_helper.number_to_human(489939, precision: 4)
+          assert_equal "489 Thousand", number_helper.number_to_human(489000, precision: 4)
+          assert_equal "489.0 Thousand", number_helper.number_to_human(489000, precision: 4, strip_insignificant_zeros: false)
+          assert_equal "1.2346 Million", number_helper.number_to_human(1234567, precision: 4, significant: false)
+          assert_equal "1,2 Million", number_helper.number_to_human(1234567, precision: 1, significant: false, separator: ",")
+          assert_equal "1 Million", number_helper.number_to_human(1234567, precision: 0, significant: true, separator: ",") #significant forced to false
           assert_equal "1 Million", number_helper.number_to_human(999999)
           assert_equal "1 Billion", number_helper.number_to_human(999999999)
         end
@@ -317,34 +317,34 @@ module ActiveSupport
       def test_number_to_human_with_custom_units
         [@instance_with_helpers, TestClassWithClassNumberHelpers, ActiveSupport::NumberHelper].each do |number_helper|
           #Only integers
-          volume = {:unit => "ml", :thousand => "lt", :million => "m3"}
-          assert_equal "123 lt", number_helper.number_to_human(123456, :units => volume)
-          assert_equal "12 ml", number_helper.number_to_human(12, :units => volume)
-          assert_equal "1.23 m3", number_helper.number_to_human(1234567, :units => volume)
+          volume = {unit: "ml", thousand: "lt", million: "m3"}
+          assert_equal "123 lt", number_helper.number_to_human(123456, units: volume)
+          assert_equal "12 ml", number_helper.number_to_human(12, units: volume)
+          assert_equal "1.23 m3", number_helper.number_to_human(1234567, units: volume)
 
           #Including fractionals
-          distance = {:mili => "mm", :centi => "cm", :deci => "dm", :unit => "m", :ten => "dam", :hundred => "hm", :thousand => "km"}
-          assert_equal "1.23 mm", number_helper.number_to_human(0.00123, :units => distance)
-          assert_equal "1.23 cm", number_helper.number_to_human(0.0123, :units => distance)
-          assert_equal "1.23 dm", number_helper.number_to_human(0.123, :units => distance)
-          assert_equal "1.23 m", number_helper.number_to_human(1.23, :units => distance)
-          assert_equal "1.23 dam", number_helper.number_to_human(12.3, :units => distance)
-          assert_equal "1.23 hm", number_helper.number_to_human(123, :units => distance)
-          assert_equal "1.23 km", number_helper.number_to_human(1230, :units => distance)
-          assert_equal "1.23 km", number_helper.number_to_human(1230, :units => distance)
-          assert_equal "1.23 km", number_helper.number_to_human(1230, :units => distance)
-          assert_equal "12.3 km", number_helper.number_to_human(12300, :units => distance)
+          distance = {mili: "mm", centi: "cm", deci: "dm", unit: "m", ten: "dam", hundred: "hm", thousand: "km"}
+          assert_equal "1.23 mm", number_helper.number_to_human(0.00123, units: distance)
+          assert_equal "1.23 cm", number_helper.number_to_human(0.0123, units: distance)
+          assert_equal "1.23 dm", number_helper.number_to_human(0.123, units: distance)
+          assert_equal "1.23 m", number_helper.number_to_human(1.23, units: distance)
+          assert_equal "1.23 dam", number_helper.number_to_human(12.3, units: distance)
+          assert_equal "1.23 hm", number_helper.number_to_human(123, units: distance)
+          assert_equal "1.23 km", number_helper.number_to_human(1230, units: distance)
+          assert_equal "1.23 km", number_helper.number_to_human(1230, units: distance)
+          assert_equal "1.23 km", number_helper.number_to_human(1230, units: distance)
+          assert_equal "12.3 km", number_helper.number_to_human(12300, units: distance)
 
           #The quantifiers don't need to be a continuous sequence
-          gangster = {:hundred => "hundred bucks", :million => "thousand quids"}
-          assert_equal "1 hundred bucks", number_helper.number_to_human(100, :units => gangster)
-          assert_equal "25 hundred bucks", number_helper.number_to_human(2500, :units => gangster)
-          assert_equal "25 thousand quids", number_helper.number_to_human(25000000, :units => gangster)
-          assert_equal "12300 thousand quids", number_helper.number_to_human(12345000000, :units => gangster)
+          gangster = {hundred: "hundred bucks", million: "thousand quids"}
+          assert_equal "1 hundred bucks", number_helper.number_to_human(100, units: gangster)
+          assert_equal "25 hundred bucks", number_helper.number_to_human(2500, units: gangster)
+          assert_equal "25 thousand quids", number_helper.number_to_human(25000000, units: gangster)
+          assert_equal "12300 thousand quids", number_helper.number_to_human(12345000000, units: gangster)
 
           #Spaces are stripped from the resulting string
-          assert_equal "4", number_helper.number_to_human(4, :units => {:unit => "", :ten => "tens "})
-          assert_equal "4.5  tens", number_helper.number_to_human(45, :units => {:unit => "", :ten => " tens   "})
+          assert_equal "4", number_helper.number_to_human(4, units: {unit: "", ten: "tens "})
+          assert_equal "4.5  tens", number_helper.number_to_human(45, units: {unit: "", ten: " tens   "})
         end
       end
 
@@ -357,9 +357,9 @@ module ActiveSupport
 
       def test_number_to_human_with_custom_format
         [@instance_with_helpers, TestClassWithClassNumberHelpers, ActiveSupport::NumberHelper].each do |number_helper|
-          assert_equal "123 times Thousand", number_helper.number_to_human(123456, :format => "%n times %u")
-          volume = {:unit => "ml", :thousand => "lt", :million => "m3"}
-          assert_equal "123.lt", number_helper.number_to_human(123456, :units => volume, :format => "%n.%u")
+          assert_equal "123 times Thousand", number_helper.number_to_human(123456, format: "%n times %u")
+          volume = {unit: "ml", thousand: "lt", million: "m3"}
+          assert_equal "123.lt", number_helper.number_to_human(123456, units: volume, format: "%n.%u")
         end
       end
 
@@ -404,7 +404,7 @@ module ActiveSupport
 
       def test_number_helpers_should_return_non_numeric_param_unchanged
         [@instance_with_helpers, TestClassWithClassNumberHelpers, ActiveSupport::NumberHelper].each do |number_helper|
-          assert_equal("+1-x x 123", number_helper.number_to_phone("x", :country_code => 1, :extension => 123))
+          assert_equal("+1-x x 123", number_helper.number_to_phone("x", country_code: 1, extension: 123))
           assert_equal("x", number_helper.number_to_phone("x"))
           assert_equal("$x.", number_helper.number_to_currency("x."))
           assert_equal("$x", number_helper.number_to_currency("x"))
diff --git a/activesupport/test/option_merger_test.rb b/activesupport/test/option_merger_test.rb
index 94870cebed..2bac550452 100644
--- a/activesupport/test/option_merger_test.rb
+++ b/activesupport/test/option_merger_test.rb
@@ -3,11 +3,11 @@ require "active_support/core_ext/object/with_options"
 
 class OptionMergerTest < ActiveSupport::TestCase
   def setup
-    @options = {:hello => "world"}
+    @options = {hello: "world"}
   end
 
   def test_method_with_options_merges_options_when_options_are_present
-    local_options = {:cool => true}
+    local_options = {cool: true}
 
     with_options(@options) do |o|
       assert_equal local_options, method_with_options(local_options)
@@ -24,7 +24,7 @@ class OptionMergerTest < ActiveSupport::TestCase
   end
 
   def test_method_with_options_allows_to_overwrite_options
-    local_options = {:hello => "moon"}
+    local_options = {hello: "moon"}
     assert_equal @options.keys, local_options.keys
 
     with_options(@options) do |o|
@@ -40,34 +40,34 @@ class OptionMergerTest < ActiveSupport::TestCase
   end
 
   def test_nested_method_with_options_containing_hashes_merge
-    with_options :conditions => { :method => :get } do |outer|
-      outer.with_options :conditions => { :domain => "www" } do |inner|
-        expected = { :conditions => { :method => :get, :domain => "www" } }
+    with_options conditions: { method: :get } do |outer|
+      outer.with_options conditions: { domain: "www" } do |inner|
+        expected = { conditions: { method: :get, domain: "www" } }
         assert_equal expected, inner.method_with_options
       end
     end
   end
 
   def test_nested_method_with_options_containing_hashes_overwrite
-    with_options :conditions => { :method => :get, :domain => "www" } do |outer|
-      outer.with_options :conditions => { :method => :post } do |inner|
-        expected = { :conditions => { :method => :post, :domain => "www" } }
+    with_options conditions: { method: :get, domain: "www" } do |outer|
+      outer.with_options conditions: { method: :post } do |inner|
+        expected = { conditions: { method: :post, domain: "www" } }
         assert_equal expected, inner.method_with_options
       end
     end
   end
 
   def test_nested_method_with_options_containing_hashes_going_deep
-    with_options :html => { :class => "foo", :style => { :margin => 0, :display => "block" } } do |outer|
-      outer.with_options :html => { :title => "bar", :style => { :margin => "1em", :color => "#fff" } } do |inner|
-        expected = { :html => { :class => "foo", :title => "bar", :style => { :margin => "1em", :display => "block", :color => "#fff" } } }
+    with_options html: { class: "foo", style: { margin: 0, display: "block" } } do |outer|
+      outer.with_options html: { title: "bar", style: { margin: "1em", color: "#fff" } } do |inner|
+        expected = { html: { class: "foo", title: "bar", style: { margin: "1em", display: "block", color: "#fff" } } }
         assert_equal expected, inner.method_with_options
       end
     end
   end
 
   def test_nested_method_with_options_using_lambda
-    local_lambda = lambda { { :lambda => true } }
+    local_lambda = lambda { { lambda: true } }
     with_options(@options) do |o|
       assert_equal @options.merge(local_lambda.call),
         o.method_with_options(local_lambda).call
diff --git a/activesupport/test/ordered_hash_test.rb b/activesupport/test/ordered_hash_test.rb
index 85abfa5002..f7977b276b 100644
--- a/activesupport/test/ordered_hash_test.rb
+++ b/activesupport/test/ordered_hash_test.rb
@@ -166,7 +166,7 @@ class OrderedHashTest < ActiveSupport::TestCase
     hash = ActiveSupport::OrderedHash.new
     hash[:a] = 0
     hash[:b] = 0
-    merged = hash.merge(:b => 2, :c => 7) do |key, old_value, new_value|
+    merged = hash.merge(b: 2, c: 7) do |key, old_value, new_value|
       new_value + 1
     end
 
@@ -179,7 +179,7 @@ class OrderedHashTest < ActiveSupport::TestCase
     hash = ActiveSupport::OrderedHash.new
     hash[:a] = 0
     hash[:b] = 0
-    hash.merge!(:a => 1, :c => 7) do |key, old_value, new_value|
+    hash.merge!(a: 1, c: 7) do |key, old_value, new_value|
       new_value + 3
     end
 
@@ -242,7 +242,7 @@ class OrderedHashTest < ActiveSupport::TestCase
   end
 
   def test_nested_under_indifferent_access
-    flash = {:a => ActiveSupport::OrderedHash[:b, 1, :c, 2]}.with_indifferent_access
+    flash = {a: ActiveSupport::OrderedHash[:b, 1, :c, 2]}.with_indifferent_access
     assert_kind_of ActiveSupport::OrderedHash, flash[:a]
   end
 
@@ -305,7 +305,7 @@ class OrderedHashTest < ActiveSupport::TestCase
 
   def test_update_sets_keys
     @updated_ordered_hash = ActiveSupport::OrderedHash.new
-    @updated_ordered_hash.update(:name => "Bob")
+    @updated_ordered_hash.update(name: "Bob")
     assert_equal [:name],  @updated_ordered_hash.keys
   end
 
diff --git a/activesupport/test/rescuable_test.rb b/activesupport/test/rescuable_test.rb
index 18e1b261e9..283afca642 100644
--- a/activesupport/test/rescuable_test.rb
+++ b/activesupport/test/rescuable_test.rb
@@ -24,9 +24,9 @@ class Stargate
 
   include ActiveSupport::Rescuable
 
-  rescue_from WraithAttack, :with => :sos_first
+  rescue_from WraithAttack, with: :sos_first
 
-  rescue_from WraithAttack, :with => :sos
+  rescue_from WraithAttack, with: :sos
 
   rescue_from "NuclearExplosion" do
     @result = "alldead"
@@ -90,7 +90,7 @@ class CoolStargate < Stargate
 
   include ActiveSupport::Rescuable
 
-  rescue_from CoolError, :with => :sos_cool_error
+  rescue_from CoolError, with: :sos_cool_error
 
   def sos_cool_error
     @result = "sos_cool_error"
diff --git a/activesupport/test/transliterate_test.rb b/activesupport/test/transliterate_test.rb
index 8678932eae..fd417d4250 100644
--- a/activesupport/test/transliterate_test.rb
+++ b/activesupport/test/transliterate_test.rb
@@ -21,7 +21,7 @@ class TransliterateTest < ActiveSupport::TestCase
 
   def test_transliterate_should_work_with_custom_i18n_rules_and_uncomposed_utf8
     char = [117, 776].pack("U*") # "ü" as ASCII "u" plus COMBINING DIAERESIS
-    I18n.backend.store_translations(:de, :i18n => {:transliterate => {:rule => {"ü" => "ue"}}})
+    I18n.backend.store_translations(:de, i18n: {transliterate: {rule: {"ü" => "ue"}}})
     default_locale, I18n.locale = I18n.locale, :de
     assert_equal "ue", ActiveSupport::Inflector.transliterate(char)
   ensure
diff --git a/activesupport/test/xml_mini_test.rb b/activesupport/test/xml_mini_test.rb
index 3179661dd1..77b6d6df8f 100644
--- a/activesupport/test/xml_mini_test.rb
+++ b/activesupport/test/xml_mini_test.rb
@@ -12,23 +12,23 @@ module XmlMiniTest
     end
 
     def test_rename_key_dasherizes_with_dasherize_true
-      assert_equal "my-key", ActiveSupport::XmlMini.rename_key("my_key", :dasherize => true)
+      assert_equal "my-key", ActiveSupport::XmlMini.rename_key("my_key", dasherize: true)
     end
 
     def test_rename_key_does_nothing_with_dasherize_false
-      assert_equal "my_key", ActiveSupport::XmlMini.rename_key("my_key", :dasherize => false)
+      assert_equal "my_key", ActiveSupport::XmlMini.rename_key("my_key", dasherize: false)
     end
 
     def test_rename_key_camelizes_with_camelize_true
-      assert_equal "MyKey", ActiveSupport::XmlMini.rename_key("my_key", :camelize => true)
+      assert_equal "MyKey", ActiveSupport::XmlMini.rename_key("my_key", camelize: true)
     end
 
     def test_rename_key_lower_camelizes_with_camelize_lower
-      assert_equal "myKey", ActiveSupport::XmlMini.rename_key("my_key", :camelize => :lower)
+      assert_equal "myKey", ActiveSupport::XmlMini.rename_key("my_key", camelize: :lower)
     end
 
     def test_rename_key_lower_camelizes_with_camelize_upper
-      assert_equal "MyKey", ActiveSupport::XmlMini.rename_key("my_key", :camelize => :upper)
+      assert_equal "MyKey", ActiveSupport::XmlMini.rename_key("my_key", camelize: :upper)
     end
 
     def test_rename_key_does_not_dasherize_leading_underscores
@@ -63,7 +63,7 @@ module XmlMiniTest
 
     def setup
       @xml = ActiveSupport::XmlMini
-      @options = {:skip_instruct => true, :builder => Builder::XmlMarkup.new}
+      @options = {skip_instruct: true, builder: Builder::XmlMarkup.new}
     end
 
     test "#to_tag accepts a callable object and passes options with the builder" do