self = <swh.indexer.tests.test_metadata.TestMetadata object at 0x7fe69ff03eb8> def test_compute_metadata_cff_empty(self): """ test yaml translation for empty yaml file """ # given content = """ """.encode( "utf-8" ) expected = None > result = self.cff_mapping.translate(content) .tox/py3/lib/python3.7/site-packages/swh/indexer/tests/test_metadata.py:193: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .tox/py3/lib/python3.7/site-packages/swh/indexer/metadata_dictionary/cff.py:33: in translate content_dict_checked = self.value_type_check(content_dict) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ self = <swh.indexer.metadata_dictionary.cff.CffMapping object at 0x7fe6847d3ef0> content_dict = None def value_type_check(self, content_dict): type_checked_content_dict = {} > for field in content_dict: E TypeError: 'NoneType' object is not iterable .tox/py3/lib/python3.7/site-packages/swh/indexer/metadata_dictionary/cff.py:45: TypeError