Part of the tests require a live Ceph cluster to run otherwise they will be skipped. Follow the instructions in `swh/objstorage/tests/winery/README.md` to setup this cluster and run the tests. It should produce the following coverage:
```
.tox/py3/lib/python3.9/site-packages/swh/objstorage/backends/winery/__init__.py 1 0 0 0 100%
.tox/py3/lib/python3.9/site-packages/swh/objstorage/backends/winery/database.py 36 5 8 1 86% 57->66, 61-65
.tox/py3/lib/python3.9/site-packages/swh/objstorage/backends/winery/objstorage.py 90 4 22 2 95% 65, 80, 104, 110
.tox/py3/lib/python3.9/site-packages/swh/objstorage/backends/winery/roshard.py 78 5 10 1 93% 28, 37, 65-67
.tox/py3/lib/python3.9/site-packages/swh/objstorage/backends/winery/rwshard.py 52 1 8 1 97% 66
.tox/py3/lib/python3.9/site-packages/swh/objstorage/backends/winery/sharedbase.py 97 2 16 0 98% 84-85
```