test_decorators.py 文件源码

def test_stacking_instead(decor):
    """Test stacking when instead is specified last (which is WRONG)

    Note that putting instead late in the stack WILL override
    any previous decorators!
    """
    tracker = Mock(name='tracker', return_value=None)

    decorated = Mock(name='decorated', return_value='decorated')

    tracker.__name__ = str('tracker')
    decorated.__name__ = str('decorated')

    fn = decor(tracker)(decorated)
    fn = instead(tracker)(fn)

    fn()

    decorated.assert_not_called()
    assert tracker.call_count == 1
    assert tracker.call_args[0][:2] == ((), {})
    assert isfunction(tracker.call_args[0][2])