Function test_real_func_loop_limit

testing/test_compat.py:20–40

()

def test_real_func_loop_limit() -> None:
    class Evil:
        def __init__(self):
            self.left = 1000

        def __repr__(self):
            return f"<Evil left={self.left}>"

        def __getattr__(self, attr):
            if not self.left:
                raise RuntimeError("it's over")  # pragma: no cover
            self.left -= 1
            return self

    evil = Evil()

    with pytest.raises(
        ValueError,
        match=("wrapper loop when unwrapping <Evil left=998>"),
    ):
        get_real_func(evil)


def test_get_real_func() -> None: