def test_patch_builtins_without_create(self):
        @patch(__name__+'.ord')
        def test_ord(mock_ord):
            mock_ord.return_value = 101
            return ord('c')

        @patch(__name__+'.open')
        def test_open(mock_open):
            m = mock_open.return_value
            m.read.return_value = 'abcd'

            fobj = open('doesnotexists.txt')
            data = fobj.read()
            fobj.close()
            return data

        self.assertEqual(test_ord(), 101)
        self.assertEqual(test_open(), 'abcd')