swh_storage = <swh.storage.in_memory.InMemoryStorage object at 0x7f56f2bcd2b0> sample_data = <swh.storage.tests.storage_data.StorageData object at 0x7f56f2bcd668> def test_snapshot_get_latest(swh_storage, sample_data): origin = sample_data.origin swh_storage.origin_add([origin]) visit1, visit2 = sample_data.origin_visits[:2] assert visit1.origin == origin.url swh_storage.origin_visit_add([visit1]) ov1 = swh_storage.origin_visit_get_latest(origin.url) # Add snapshot to visit1, latest snapshot = visit 1 snapshot complete_snapshot = sample_data.snapshots[2] swh_storage.snapshot_add([complete_snapshot]) swh_storage.origin_visit_status_add( [ OriginVisitStatus( origin=origin.url, > visit=ov1.visit, date=visit2.date, status="partial", snapshot=None, ) ] ) E AttributeError: 'NoneType' object has no attribute 'visit' .tox/py3/lib/python3.7/site-packages/swh/storage/tests/algos/test_snapshot.py:115: AttributeError