def test_raise(self) -> None:
# act & assert
with self.assertRaises(TypeError):
KnownImageCrawlers._test_inheritance(
StandaloneLoadableImageCrawlerA)
def test_success(self) -> None:
# act
KnownImageCrawlers._test_inheritance(LoadableImageCrawlerA)
# assert
self.assertTrue(True, 'no errors thrown')