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How to use the punq.InvalidForwardReferenceException function in punq

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bobthemighty / punq / tests / test_string_annotations.py View on Github

def test_forward_references_must_be_registered_before_their_clients():
    """
    If we haven't registered the 'Dependency' type yet, then we'll raise
    a specific error so people can at least work out what the hell is happening
    """
    container = punq.Container()

    with pytest.raises(punq.InvalidForwardReferenceException):
        container.register(Client)