testmock.py 文件源码

def test_side_effect_setting_iterator(self):
        mock = Mock()
        mock.side_effect = iter([1, 2, 3])
        self.assertEqual([mock(), mock(), mock()], [1, 2, 3])
        self.assertRaises(StopIteration, mock)
        side_effect = mock.side_effect
        self.assertIsInstance(side_effect, type(iter([])))

        mock.side_effect = ['a', 'b', 'c']
        self.assertEqual([mock(), mock(), mock()], ['a', 'b', 'c'])
        self.assertRaises(StopIteration, mock)
        side_effect = mock.side_effect
        self.assertIsInstance(side_effect, type(iter([])))

        this_iter = Iter()
        mock.side_effect = this_iter
        self.assertEqual([mock(), mock(), mock(), mock()],
                         ['this', 'is', 'an', 'iter'])
        self.assertRaises(StopIteration, mock)
        self.assertIs(mock.side_effect, this_iter)