self = <swh.objstorage.tests.test_objstorage_azure.TestAzureCloudObjStorage testMethod=test_add_stream_sleep> def test_add_stream_sleep(self): def gen_content(): yield b"chunk1" time.sleep(0.5) yield b"chunk42" _, obj_id = self.hash_content(b"placeholder_id") try: > self.storage.add_stream(gen_content(), obj_id=obj_id) E AttributeError: 'AzureCloudObjStorage' object has no attribute 'add_stream' .tox/py3/lib/python3.7/site-packages/swh/objstorage/tests/objstorage_testing.py:152: AttributeError