def __repr__(self):
        return "<NamedRequirements({}{})>".format(
            self.name,
            ", filename='{}'".format(self.filename.name) if self.filename
            else "")
def test_int_range_low(self):
        int_range = inputs.int_range(0, 5)
        assert_raises(ValueError, lambda: int_range(-1))