Merge pull request #2801 from jeremyevans/patch-1

Fix obviously breakage of Time.=== for Time subclasses

Author: jeremy

activesupport/lib/active_support/core_ext/time/calculations.rb

@@ -9,7 +9,7 @@ class Time
   class << self
     # Overriding case equality method so that it returns true for ActiveSupport::TimeWithZone instances
     def ===(other)
-      other.is_a?(::Time)
     end
 
     # Return the number of days in the given month.

activesupport/test/core_ext/time_ext_test.rb

@@ -764,7 +764,10 @@ def test_time_created_with_local_constructor_cannot_represent_times_during_hour_
   def test_case_equality
     assert Time === Time.utc(2000)
     assert Time === ActiveSupport::TimeWithZone.new(Time.utc(2000), ActiveSupport::TimeZone['UTC'])
+    assert Time === Class.new(Time).utc(2000)
     assert_equal false, Time === DateTime.civil(2000)
+    assert_equal false, Class.new(Time) === Time.utc(2000)
+    assert_equal false, Class.new(Time) === ActiveSupport::TimeWithZone.new(Time.utc(2000), ActiveSupport::TimeZone['UTC'])
   end
 
   protected