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require "cases/helper"
require 'models/topic'
class AttributeMethodsTest < ActiveRecord::TestCase
fixtures :topics
def setup
@old_suffixes = ActiveRecord::Base.send(:attribute_method_suffixes).dup
@target = Class.new(ActiveRecord::Base)
@target.table_name = 'topics'
end
def teardown
ActiveRecord::Base.send(:attribute_method_suffixes).clear
ActiveRecord::Base.attribute_method_suffix *@old_suffixes
end
def test_match_attribute_method_query_returns_match_data
assert_not_nil md = @target.match_attribute_method?('title=')
assert_equal 'title', md.pre_match
assert_equal ['='], md.captures
%w(_hello_world ist! _maybe?).each do |suffix|
@target.class_eval "def attribute#{suffix}(*args) args end"
@target.attribute_method_suffix suffix
assert_not_nil md = @target.match_attribute_method?("title#{suffix}")
assert_equal 'title', md.pre_match
assert_equal [suffix], md.captures
end
end
def test_declared_attribute_method_affects_respond_to_and_method_missing
topic = @target.new(:title => 'Budget')
assert topic.respond_to?('title')
assert_equal 'Budget', topic.title
assert !topic.respond_to?('title_hello_world')
assert_raise(NoMethodError) { topic.title_hello_world }
%w(_hello_world _it! _candidate= able?).each do |suffix|
@target.class_eval "def attribute#{suffix}(*args) args end"
@target.attribute_method_suffix suffix
meth = "title#{suffix}"
assert topic.respond_to?(meth)
assert_equal ['title'], topic.send(meth)
assert_equal ['title', 'a'], topic.send(meth, 'a')
assert_equal ['title', 1, 2, 3], topic.send(meth, 1, 2, 3)
end
end
def test_should_unserialize_attributes_for_frozen_records
myobj = {:value1 => :value2}
topic = Topic.create("content" => myobj)
topic.freeze
assert_equal myobj, topic.content
end
def test_kernel_methods_not_implemented_in_activerecord
%w(test name display y).each do |method|
assert_equal false, ActiveRecord::Base.instance_method_already_implemented?(method), "##{method} is defined"
end
end
def test_primary_key_implemented
assert_equal true, Class.new(ActiveRecord::Base).instance_method_already_implemented?('id')
end
def test_defined_kernel_methods_implemented_in_model
%w(test name display y).each do |method|
klass = Class.new ActiveRecord::Base
klass.class_eval "def #{method}() 'defined #{method}' end"
assert_equal true, klass.instance_method_already_implemented?(method), "##{method} is not defined"
end
end
def test_defined_kernel_methods_implemented_in_model_abstract_subclass
%w(test name display y).each do |method|
abstract = Class.new ActiveRecord::Base
abstract.class_eval "def #{method}() 'defined #{method}' end"
abstract.abstract_class = true
klass = Class.new abstract
assert_equal true, klass.instance_method_already_implemented?(method), "##{method} is not defined"
end
end
def test_raises_dangerous_attribute_error_when_defining_activerecord_method_in_model
%w(save create_or_update).each do |method|
klass = Class.new ActiveRecord::Base
klass.class_eval "def #{method}() 'defined #{method}' end"
assert_raises ActiveRecord::DangerousAttributeError do
klass.instance_method_already_implemented?(method)
end
end
end
def test_only_time_related_columns_are_meant_to_be_cached_by_default
expected = %w(datetime timestamp time date).sort
assert_equal expected, ActiveRecord::Base.attribute_types_cached_by_default.map(&:to_s).sort
end
def test_declaring_attributes_as_cached_adds_them_to_the_attributes_cached_by_default
default_attributes = Topic.cached_attributes
Topic.cache_attributes :replies_count
expected = default_attributes + ["replies_count"]
assert_equal expected.sort, Topic.cached_attributes.sort
Topic.instance_variable_set "@cached_attributes", nil
end
def test_time_related_columns_are_actually_cached
column_types = %w(datetime timestamp time date).map(&:to_sym)
column_names = Topic.columns.select{|c| column_types.include?(c.type) }.map(&:name)
assert_equal column_names.sort, Topic.cached_attributes.sort
assert_equal time_related_columns_on_topic.sort, Topic.cached_attributes.sort
end
def test_accessing_cached_attributes_caches_the_converted_values_and_nothing_else
t = topics(:first)
cache = t.instance_variable_get "@attributes_cache"
assert_not_nil cache
assert cache.empty?
all_columns = Topic.columns.map(&:name)
cached_columns = time_related_columns_on_topic
uncached_columns = all_columns - cached_columns
all_columns.each do |attr_name|
attribute_gets_cached = Topic.cache_attribute?(attr_name)
val = t.send attr_name unless attr_name == "type"
if attribute_gets_cached
assert cached_columns.include?(attr_name)
assert_equal val, cache[attr_name]
else
assert uncached_columns.include?(attr_name)
assert !cache.include?(attr_name)
end
end
end
def test_time_attributes_are_retrieved_in_current_time_zone
in_time_zone "Pacific Time (US & Canada)" do
utc_time = Time.utc(2008, 1, 1)
record = @target.new
record[:written_on] = utc_time
assert_equal utc_time, record.written_on # record.written on is equal to (i.e., simultaneous with) utc_time
assert_kind_of ActiveSupport::TimeWithZone, record.written_on # but is a TimeWithZone
assert_equal TimeZone["Pacific Time (US & Canada)"], record.written_on.time_zone # and is in the current Time.zone
assert_equal Time.utc(2007, 12, 31, 16), record.written_on.time # and represents time values adjusted accordingly
end
end
def test_setting_time_zone_aware_attribute_to_utc
in_time_zone "Pacific Time (US & Canada)" do
utc_time = Time.utc(2008, 1, 1)
record = @target.new
record.written_on = utc_time
assert_equal utc_time, record.written_on
assert_equal TimeZone["Pacific Time (US & Canada)"], record.written_on.time_zone
assert_equal Time.utc(2007, 12, 31, 16), record.written_on.time
end
end
def test_setting_time_zone_aware_attribute_in_other_time_zone
utc_time = Time.utc(2008, 1, 1)
cst_time = utc_time.in_time_zone("Central Time (US & Canada)")
in_time_zone "Pacific Time (US & Canada)" do
record = @target.new
record.written_on = cst_time
assert_equal utc_time, record.written_on
assert_equal TimeZone["Pacific Time (US & Canada)"], record.written_on.time_zone
assert_equal Time.utc(2007, 12, 31, 16), record.written_on.time
end
end
def test_setting_time_zone_aware_attribute_in_current_time_zone
utc_time = Time.utc(2008, 1, 1)
in_time_zone "Pacific Time (US & Canada)" do
record = @target.new
record.written_on = utc_time.in_time_zone
assert_equal utc_time, record.written_on
assert_equal TimeZone["Pacific Time (US & Canada)"], record.written_on.time_zone
assert_equal Time.utc(2007, 12, 31, 16), record.written_on.time
end
end
private
def time_related_columns_on_topic
Topic.columns.select{|c| [:time, :date, :datetime, :timestamp].include?(c.type)}.map(&:name)
end
def in_time_zone(zone)
old_zone = Time.zone
old_tz = ActiveRecord::Base.time_zone_aware_attributes
Time.zone = zone ? TimeZone[zone] : nil
ActiveRecord::Base.time_zone_aware_attributes = !zone.nil?
yield
ensure
Time.zone = old_zone
ActiveRecord::Base.time_zone_aware_attributes = old_tz
end
end
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