ckp95

    @parametrize_cases(
        Case("handle null", age=None, x="foobar"),
        Case("don't allow under 13s", age=11, x="foobar"),
        Case("or old age pension", age=77, x="wobble"),
        ... # as many as you want
    )
    def test_lots_of_ways_to_fail(age, x):
        with pytest.raises(ValueError):
            function_under_test(age, x)