The absence of a CI signal is indistinguishable from a passing one, and
that shape has now produced several independent holes: whole test
directories no job runs, and shipped images no job builds. Nothing was
watching for either, so each was found by accident.
assert_ci_coverage.py enumerates every test_*.py under tests/ and every
Dockerfile in the repo, then credits only what the workflows and the
CircleCI config actually invoke. Paths filters and lint steps that merely
name a directory do not count as coverage, because crediting a mention is
the same mistake one level up. Anything neither invoked nor listed in
.github/ci-coverage-allowlist.yml with a written reason fails the job.
The guard found 275 uncovered test files and 6 unbuilt Dockerfiles. Fixed
here: the root Dockerfile, the primary published image, now gets an
image-scan leg that builds it and runs the offline migration check against
it, and 8 tests/test_litellm subdirectories join the shards that already
enumerate their siblings. Everything else is allowlisted per file, so a
new file cannot inherit an exemption, and the remaining decisions are
tracked rather than invisible.
The job reports but is not in branch protection, so it does not block
merges; promoting it is a separate change once the allowlist has survived
contact with a few pull requests.
