Test using default option added for human_attribute_name

activemodel/test/cases/translation_test.rb

@@ -17,6 +17,10 @@ def test_translated_model_attributes_with_default
     assert_equal 'name default attribute', Person.human_attribute_name('name')
   end
 
+  def test_translated_model_attributes_using_default_option
+    assert_equal 'name default attribute', Person.human_attribute_name('name', :default => "name default attribute")
+  end
+
   def test_translated_model_attributes_with_symbols
     I18n.backend.store_translations 'en', :activemodel => {:attributes => {:person => {:name => 'person name attribute'} } }
     assert_equal 'person name attribute', Person.human_attribute_name(:name)