 by default" do     ActiveResource::HttpMock.respond_to do |mock|       mock.send(:get, "/people/0", {}, "XML0")     end     assert_equal 0, ActiveResource::HttpMock.responses.length      ActiveResource::HttpMock.respond_to do |mock|       mock.send(:get, "/people/0", {}, "XML0")     end     assert_equal 0, ActiveResource::HttpMock.responses.length   end    test "resets all mocked responses on each call to respond_to 