1 files changed, 16 insertions, 0 deletions
diff --git a/activesupport/test/core_ext/class/class_inheritable_attributes_test.rb b/activesupport/test/core_ext/class/class_inheritable_attributes_test.rb
index 8b11e680af..c0bb7acb3d 100644
--- a/activesupport/test/core_ext/class/class_inheritable_attributes_test.rb
+++ b/activesupport/test/core_ext/class/class_inheritable_attributes_test.rb
@@ -205,4 +205,20 @@ class ClassInheritableAttributesTest < Test::Unit::TestCase
     assert_equal 1, @sub.a.keys.size
     assert_equal 0, @klass.a.keys.size
   end
+  
+  def test_reset_inheritable_attributes
+    @klass.class_inheritable_accessor :a
+    @klass.a = 'a'
+
+    @sub = eval("class Inheriting < @klass; end; Inheriting")
+
+    assert_equal 'a', @klass.a
+    assert_equal 'a', @sub.a
+
+    @klass.reset_inheritable_attributes
+    @sub = eval("class NotInheriting < @klass; end; NotInheriting")
+
+    assert_equal nil, @klass.a
+    assert_equal nil, @sub.a
+  end
 end