testmock.py 文件源码

def test_side_effect(self):
        mock = Mock()

        def effect(*args, **kwargs):
            raise SystemError('kablooie')

        mock.side_effect = effect
        self.assertRaises(SystemError, mock, 1, 2, fish=3)
        mock.assert_called_with(1, 2, fish=3)

        results = [1, 2, 3]
        def effect():
            return results.pop()
        mock.side_effect = effect

        self.assertEqual([mock(), mock(), mock()], [3, 2, 1],
                          "side effect not used correctly")

        mock = Mock(side_effect=sentinel.SideEffect)
        self.assertEqual(mock.side_effect, sentinel.SideEffect,
                          "side effect in constructor not used")

        def side_effect():
            return DEFAULT
        mock = Mock(side_effect=side_effect, return_value=sentinel.RETURN)
        self.assertEqual(mock(), sentinel.RETURN)