def METHOD_NAME(self, cls):
    @dataclass
    class DummyDataClass:
        a: int = -1
        b: int = 5
        c: int = 0
    result = config_utils.assert_dataclass_signature_match(cls, DummyDataClass)
    signatures_match, cls_subset, dataclass_subset = result
    assert not signatures_match
    assert len(cls_subset) > 0
    assert len(dataclass_subset) == 0