Object#instance_variable_defined? is not needed for Ruby >= 1.8.7

2 files changed, 0 insertions, 14 deletions

diff --git a/activesupport/lib/active_support/core_ext/object/instance_variables.rb b/activesupport/lib/active_support/core_ext/object/instance_variables.rb
index 4ecaab3bbb..866317b17a 100644
--- a/activesupport/lib/active_support/core_ext/object/instance_variables.rb
+++ b/activesupport/lib/active_support/core_ext/object/instance_variables.rb
@@ -1,11 +1,4 @@
 class Object
-  # Available in 1.8.6 and later.
-  unless respond_to?(:instance_variable_defined?)
-    def instance_variable_defined?(variable)
-      instance_variables.include?(variable.to_s)
-    end
-  end
-
   # Returns a hash that maps instance variable names without "@" to their
   # corresponding values. Keys are strings both in Ruby 1.8 and 1.9.
   #
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 f0121b862d..e6fbdb637b 100644
--- a/activesupport/test/core_ext/object_and_class_ext_test.rb
+++ b/activesupport/test/core_ext/object_and_class_ext_test.rb
@@ -182,13 +182,6 @@ class ObjectInstanceVariableTest < Test::Unit::TestCase
     assert_equal %w(@bar @baz), @source.instance_variable_names.sort
   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)