8 files changed, 59 insertions, 2 deletions
diff --git a/activesupport/test/core_ext/array_ext_test.rb b/activesupport/test/core_ext/array_ext_test.rb
index efa7582ab0..384064d81f 100644
--- a/activesupport/test/core_ext/array_ext_test.rb
+++ b/activesupport/test/core_ext/array_ext_test.rb
@@ -96,6 +96,10 @@ class ArrayExtToSentenceTests < ActiveSupport::TestCase
     assert_equal "one two, and three", ['one', 'two', 'three'].to_sentence(options)
     assert_equal({ words_connector: ' ' }, options)
   end
+
+  def test_with_blank_elements
+    assert_equal ", one, , two, and three", [nil, 'one', '', 'two', 'three'].to_sentence
+  end
 end
 
 class ArrayExtToSTests < ActiveSupport::TestCase
diff --git a/activesupport/test/core_ext/date_ext_test.rb b/activesupport/test/core_ext/date_ext_test.rb
index b1adf6d396..aa5e4461fd 100644
--- a/activesupport/test/core_ext/date_ext_test.rb
+++ b/activesupport/test/core_ext/date_ext_test.rb
@@ -48,6 +48,10 @@ class DateExtCalculationsTest < ActiveSupport::TestCase
     end
   end
 
+  def test_compare_to_time
+    assert Date.yesterday < Time.now
+  end
+
   def test_to_datetime
     assert_equal DateTime.civil(2005, 2, 21), Date.new(2005, 2, 21).to_datetime
     assert_equal 0, Date.new(2005, 2, 21).to_datetime.offset # use UTC offset
diff --git a/activesupport/test/core_ext/date_time_ext_test.rb b/activesupport/test/core_ext/date_time_ext_test.rb
index 3e76b8a9b1..571344b728 100644
--- a/activesupport/test/core_ext/date_time_ext_test.rb
+++ b/activesupport/test/core_ext/date_time_ext_test.rb
@@ -327,6 +327,16 @@ class DateTimeExtCalculationsTest < ActiveSupport::TestCase
     assert_equal 946684800, DateTime.civil(1999,12,31,19,0,0,Rational(-5,24)).to_i
   end
 
+  def test_usec
+    assert_equal 0, DateTime.civil(2000).usec
+    assert_equal 500000, DateTime.civil(2000, 1, 1, 0, 0, Rational(1,2)).usec
+  end
+
+  def test_nsec
+    assert_equal 0, DateTime.civil(2000).nsec
+    assert_equal 500000000, DateTime.civil(2000, 1, 1, 0, 0, Rational(1,2)).nsec
+  end
+
   protected
     def with_env_tz(new_tz = 'US/Eastern')
       old_tz, ENV['TZ'] = ENV['TZ'], new_tz
diff --git a/activesupport/test/core_ext/hash_ext_test.rb b/activesupport/test/core_ext/hash_ext_test.rb
index 70b5f4b8fb..c6d7ab618c 100644
--- a/activesupport/test/core_ext/hash_ext_test.rb
+++ b/activesupport/test/core_ext/hash_ext_test.rb
@@ -533,6 +533,13 @@ class HashExtTest < ActiveSupport::TestCase
     assert_equal [1], hash[:a]
   end
 
+  def test_with_indifferent_access_has_no_side_effects_on_existing_hash
+    hash = {content: [{:foo => :bar, 'bar' => 'baz'}]}
+    hash.with_indifferent_access
+
+    assert_equal [:foo, "bar"], hash[:content].first.keys
+  end
+
   def test_indifferent_hash_with_array_of_hashes
     hash = { "urls" => { "url" => [ { "address" => "1" }, { "address" => "2" } ] }}.with_indifferent_access
     assert_equal "1", hash[:urls][:url].first[:address]
diff --git a/activesupport/test/core_ext/numeric_ext_test.rb b/activesupport/test/core_ext/numeric_ext_test.rb
index f22ae3ccac..1da72eb17d 100644
--- a/activesupport/test/core_ext/numeric_ext_test.rb
+++ b/activesupport/test/core_ext/numeric_ext_test.rb
@@ -77,7 +77,7 @@ class NumericExtTimeAndDateTimeTest < ActiveSupport::TestCase
     assert_equal @dtnow.advance(:days => 1).advance(:months => 2), @dtnow + 1.day + 2.months
   end
 
-  def test_duration_after_convertion_is_no_longer_accurate
+  def test_duration_after_conversion_is_no_longer_accurate
     assert_equal 30.days.to_i.since(@now), 1.month.to_i.since(@now)
     assert_equal 365.25.days.to_f.since(@now), 1.year.to_f.since(@now)
     assert_equal 30.days.to_i.since(@dtnow), 1.month.to_i.since(@dtnow)
diff --git a/activesupport/test/core_ext/range_ext_test.rb b/activesupport/test/core_ext/range_ext_test.rb
index 3e2355ae23..2f8723a074 100644
--- a/activesupport/test/core_ext/range_ext_test.rb
+++ b/activesupport/test/core_ext/range_ext_test.rb
@@ -54,7 +54,7 @@ class RangeTest < ActiveSupport::TestCase
     assert((1...10) === (1...10))
   end
 
-  def test_should_compare_other_with_exlusive_end
+  def test_should_compare_other_with_exclusive_end
     assert((1..10) === (1...10))
   end
 
diff --git a/activesupport/test/core_ext/time_ext_test.rb b/activesupport/test/core_ext/time_ext_test.rb
index 4e53aff00b..eefcdbb1b3 100644
--- a/activesupport/test/core_ext/time_ext_test.rb
+++ b/activesupport/test/core_ext/time_ext_test.rb
@@ -741,6 +741,28 @@ class TimeExtCalculationsTest < ActiveSupport::TestCase
     assert_equal(-1, Time.utc(2000) <=> ActiveSupport::TimeWithZone.new( Time.utc(2000, 1, 1, 0, 0, 1), ActiveSupport::TimeZone['UTC'] ))
   end
 
+  def test_at_with_datetime
+    assert_equal Time.utc(2000, 1, 1, 0, 0, 0), Time.at(DateTime.civil(2000, 1, 1, 0, 0, 0))
+
+    # Only test this if the underlying Time.at raises a TypeError
+    begin
+      Time.at_without_coercion(Time.now, 0)
+    rescue TypeError
+      assert_raise(TypeError) { assert_equal(Time.utc(2000, 1, 1, 0, 0, 0), Time.at(DateTime.civil(2000, 1, 1, 0, 0, 0), 0)) }
+    end
+  end
+
+  def test_at_with_time_with_zone
+    assert_equal Time.utc(2000, 1, 1, 0, 0, 0), Time.at(ActiveSupport::TimeWithZone.new(Time.utc(2000, 1, 1, 0, 0, 0), ActiveSupport::TimeZone['UTC']))
+
+    # Only test this if the underlying Time.at raises a TypeError
+    begin
+      Time.at_without_coercion(Time.now, 0)
+    rescue TypeError
+      assert_raise(TypeError) { assert_equal(Time.utc(2000, 1, 1, 0, 0, 0), Time.at(ActiveSupport::TimeWithZone.new(Time.utc(2000, 1, 1, 0, 0, 0), ActiveSupport::TimeZone['UTC']), 0)) }
+    end
+  end
+
   def test_eql?
     assert_equal true, Time.utc(2000).eql?( ActiveSupport::TimeWithZone.new(Time.utc(2000), ActiveSupport::TimeZone['UTC']) )
     assert_equal true, Time.utc(2000).eql?( ActiveSupport::TimeWithZone.new(Time.utc(2000), ActiveSupport::TimeZone["Hawaii"]) )
diff --git a/activesupport/test/core_ext/time_with_zone_test.rb b/activesupport/test/core_ext/time_with_zone_test.rb
index 3ce3297874..ddcfcc491f 100644
--- a/activesupport/test/core_ext/time_with_zone_test.rb
+++ b/activesupport/test/core_ext/time_with_zone_test.rb
@@ -445,6 +445,16 @@ class TimeWithZoneTest < ActiveSupport::TestCase
     assert_equal 0, twz.usec
   end
 
+  def test_usec_returns_sec_fraction_when_datetime_is_wrapped
+    twz = ActiveSupport::TimeWithZone.new(DateTime.civil(2000, 1, 1, 0, 0, Rational(1,2)), @time_zone)
+    assert_equal 500000, twz.usec
+  end
+
+  def test_nsec_returns_sec_fraction_when_datetime_is_wrapped
+    twz = ActiveSupport::TimeWithZone.new(DateTime.civil(2000, 1, 1, 0, 0, Rational(1,2)), @time_zone)
+    assert_equal 500000000, twz.nsec
+  end
+
   def test_utc_to_local_conversion_saves_period_in_instance_variable
     assert_nil @twz.instance_variable_get('@period')
     @twz.time