testing.ABSENT
expected for a conditional ObjectBackend.fork(): the branch must
testing.ABSENT: State = {}
not exist yet. An empty state, which no fingerprint ever is; test for it with not expected and never mutate it.
expected for a conditional ObjectBackend.fork(): the branch must
testing.ABSENT: State = {}
not exist yet. An empty state, which no fingerprint ever is; test for it with not expected and never mutate it.