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-rw-r--r--activesupport/test/core_ext/object_and_class_ext_test.rb7
1 files changed, 7 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 f7e2cc4056..5e6144d64c 100644
--- a/activesupport/test/core_ext/object_and_class_ext_test.rb
+++ b/activesupport/test/core_ext/object_and_class_ext_test.rb
@@ -177,6 +177,13 @@ class ObjectInstanceVariableTest < Test::Unit::TestCase
@source.instance_variable_set(:@baz, 'baz')
end
+ def test_instance_variable_defined
+ assert @source.instance_variable_defined?('@bar')
+ assert @source.instance_variable_defined?(:@bar)
+ assert !@source.instance_variable_defined?(:@foo)
+ assert !@source.instance_variable_defined?('@foo')
+ end
+
def test_copy_instance_variables_from_without_explicit_excludes
assert_equal [], @dest.instance_variables
@dest.copy_instance_variables_from(@source)