The per-bottle egress-secret encryption (secret_store.py) was unauthenticated CTR/XOR: decrypting with the WRONG ENV_VAR_SECRET produced garbage that decrypt_value only rejected when it wasn't valid UTF-8. For short token values that garbage is coincidentally valid UTF-8 ~5% of the time, so `reprovision_from_secret` would occasionally "succeed" with a wrong key and inject a garbage egress credential — and test_reprovision_rejects_missing_rows_and_wrong_key failed ~5% of runs (flaky CI, surfaced by this stack's unit job). Switch to authenticated encrypt-then-MAC: append an HMAC-SHA256 tag over `nonce || ciphertext`, keyed by a domain-separated MAC subkey derived from the ENV_VAR_SECRET. decrypt_value verifies the tag (constant-time) before returning any plaintext, so a wrong key or tampered ciphertext is rejected deterministically. Blob format is now `nonce || ciphertext || tag` (the stored rows are transient — re-written every launch — so no migration is needed). Pre-existing bug on main, unrelated to the transport work, but it blocks this stack's CI. Tests: wrong key rejected 200/200; tampered ciphertext rejected; round-trips unchanged. Deterministic now (was ~5% flaky). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Tests
Plain-Python test suite using stdlib unittest. No external
dependencies. Unit tests run anywhere Python 3 is present; integration
tests run through the backend named by BOT_BOTTLE_BACKEND (default
docker) and skip cleanly when that backend isn't available on the host.
Layout
tests/
fixtures.py # JSON manifest builders (shared)
_backend.py # backend selection + skip guards (shared)
unit/
test_egress.py
test_egress_addon_core.py
test_manifest_egress.py
test_dlp_detectors.py
test_manifest_runtime.py
... # many others; see unit/ directory
integration/
test_gateway_image.py
test_sandbox_escape.py
test_orphan_cleanup.py
...
canaries/
test_gitleaks_release.py # opt-in upstream artifact check
Classification falls out of the directory — no hand-maintained list to keep in sync.
Running
python -m unittest discover -t . -s tests/unit -v # unit only
python -m unittest discover -t . -s tests/integration -v # integration only
python -m unittest discover -t . -s tests -v # both (recursive)
python -m unittest tests.unit.test_manifest_egress # one file
Discovery is invoked with -t . (top-level dir = repo root) so the
bot_bottle package on sys.path resolves correctly.
What the integration tests cover
test_orphan_cleanup.py—network_removeis idempotent against missing resources, so the EXIT trap can call it unconditionally.test_gateway_image.py— builds Dockerfile.gateway and probes that gitleaks / mitmdump / supervise are all reachable inside the gateway image.test_orchestrator_docker_auth.py— drives the real control-plane container and verifies role-scoped authentication.test_multitenant_isolation.pyandtest_sandbox_escape.py— exercise token/allowlist separation and end-to-end escape attempts.
Canaries
tests/canaries/ holds upstream-regression checks gated on
BOT_BOTTLE_RUN_CANARIES=1 and not part of the per-push suite.
They're invoked by the scheduled canaries workflow. The gitleaks canary
downloads the exact release archive pinned by Dockerfile.gateway, verifies
its architecture-specific checksum, and executes the binary.
BOT_BOTTLE_RUN_CANARIES=1 python -m scripts.unittest_gate \
-t . -s tests/canaries -v --minimum-executed 1 --fail-on-skip
What's NOT covered
bot_bottle/ssh.pyend-to-end (would need a fake SSH host inside the container).- A live SSH-through-git-gate tunnel against a real Tailscale-style IP.
- DLP false-positive measurements.
- TLS handling / cert pinning behavior.
Adding a test
-
Pick the directory:
tests/unit/for a pure unit test,tests/integration/for one that needs a backend. -
Filename:
test_<topic>.py. -
Boilerplate:
import unittest from bot_bottle.<module> import <symbol> class TestThing(unittest.TestCase): def test_x(self): ... if __name__ == "__main__": unittest.main() -
Skip guards live in
tests._backendand gate on the backend's own readiness check,bot_bottle.backend.has_backend— the same probe behind./cli.py backend status:- Backend-agnostic tests (go through
get_bottle_backend()) decorate the class with@skip_unless_selected_backend_available()— the test runs against whichever backendBOT_BOTTLE_BACKENDselects and skips unless that backend is available (checking, e.g., Linux +/dev/kvmfor Firecracker rather than unrelated Docker availability). - Backend-specific tests (exercise
DockerBroker,DockerGateway,backend.docker.*, …) decorate with@skip_unless_backend("docker")so they no-op under a run targeting a different backend.
Each CI integration job runs
./cli.py backend status --backend=<name>as a preflight, which prints a clear per-check summary and exits non-zero when the backend is missing — so absent infrastructure fails the job instead of hiding among per-testunittest.skiplines. - Backend-agnostic tests (go through