self = <swh.model.tests.test_hashutil.HashlibGit testMethod=test_unknown_header_type> def test_unknown_header_type(self): with self.assertRaises(ValueError) as cm: > hashutil.hash_git_data(b"any-data", "some-unknown-type") E AttributeError: module 'swh.model.hashutil' has no attribute 'hash_git_data' .tox/py3-full/lib/python3.7/site-packages/swh/model/tests/test_hashutil.py:320: AttributeError