diff options
Diffstat (limited to 'activesupport/test')
-rw-r--r-- | activesupport/test/core_ext/object_and_class_ext_test.rb | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/activesupport/test/core_ext/object_and_class_ext_test.rb b/activesupport/test/core_ext/object_and_class_ext_test.rb index 9daf8d0ac4..e48d87a198 100644 --- a/activesupport/test/core_ext/object_and_class_ext_test.rb +++ b/activesupport/test/core_ext/object_and_class_ext_test.rb @@ -96,6 +96,34 @@ class ObjectTests < Test::Unit::TestCase assert object.respond_to?(:baz) end + class DuckTime + def acts_like_time? + true + end + end + + def test_duck_typing + object = Object.new + time = Time.now + date = Date.today + dt = DateTime.new + duck = DuckTime.new + + assert !object.acts_like?(:time) + assert !object.acts_like?(:date) + + assert time.acts_like?(:time) + assert !time.acts_like?(:date) + + assert !date.acts_like?(:time) + assert date.acts_like?(:date) + + assert dt.acts_like?(:time) + assert dt.acts_like?(:date) + + assert duck.acts_like?(:time) + assert !duck.acts_like?(:date) + end end class ObjectInstanceVariableTest < Test::Unit::TestCase |