test(dns-server): raise coverage to ~99% and enforce the 90% gate - #96
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Release is gated on 90% coverage; the dns-server coverage check was masked (--cov-fail-under=98 || true) and hid that real coverage was ~45%. It was also missing a test-only dependency (`responses`), so two suites failed collection and the gate would have errored even if unmasked. - Added 14 unit-test suites covering the previously-thin modules to ~99-100%: cert_manager, selective_dns_routing, selective_router, manager_client, resilience, config, main, http3_serving, dns_resolver, cache_manager, prometheus_metrics, metrics_reporter, observability, grpc_server. Real behavior + edge/error paths, mocked externals. - Fixed a real DoS bug found while testing: prometheus_metrics.py imported `prometheus_client.Counter` over `collections.Counter` (name shadow), so the top_domains cap trim always raised (silently swallowed) and the dict was never bounded. Aliased to CollectionsCounter; the cap now actually enforces. - CI (build.yml, server-release.yml): install requirements-dev.txt in the coverage step (provides `responses`), remove the `|| true` mask, and set --cov-fail-under=90 so the gate is real. Local lower bound (excluding the 2 responses-dependent suites): 99% (1951 stmts, 25 missing). flake8 clean on all files; workflows valid. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Two CI failures on the coverage gate: - test_manager_client_coverage.py uses the `requests_mock` fixture from the requests-mock package, which was installed locally but not declared — CI errored with "fixture 'requests_mock' not found". Added requests-mock to dns-server/requirements-dev.txt (installed by the coverage step). - CodeQL raised 2 high false positives (py/incomplete-url-substring-sanitization) on membership checks in the new test files (`"host" in dict`, `"name" in list` — not URL sanitization). Added .github/codeql/codeql-config.yml with paths-ignore for test/vendored code and wired it into codeql.yml init; production code is still scanned. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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CI (stricter env) surfaced 3 test failures on the coverage run: - cert_manager.create_server_cert used the host FQDN as the X.509 CommonName with no length cap; a >64-char hostname (e.g. the CI runner's) raised ValueError during cert generation -- a real bug for long-hostname hosts. CN is now truncated to 64 chars; the full hostname still goes in the SAN. - prometheus_metrics system-metrics tests require psutil (an optional guarded import in the module); added psutil to requirements-dev.txt so the psutil path runs under test. Coverage gate itself already passed (97.86% >= 90%). All 134 cert/prometheus tests pass locally; flake8 clean. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The 40 selective-routing coverage tests passed in the pip test env but failed in CI's Docker-image test run (`docker run ... pytest tests/`) with TableNotFoundError for dns_group / dns_routing_zone / user_group_assignment / group_zone_access. Like the token-hash test before it, they relied on conftest importing the manager schema to create those tables, which silently no-ops when manager/ isn't checked out alongside (the Docker case). Added an autouse fixture that creates the four tables directly against db_engine (checkfirst=True, row-only teardown), mirroring test_selective_dns_routing_ token_hash.py. Also fixed one test that used a token but hadn't declared the token_table fixture. Verified against a fresh copy with no manager/ sibling (60 passed, twice); coverage still 100%. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Summary
Release is gated on the 90% coverage standard. The dns-server coverage check was masked (
--cov-fail-under=98 || true) which hid that real coverage was only ~45%, and the coverage step was missing a test-only dependency (responses) so two suites failed collection — meaning the gate would have errored even if unmasked.Changes
prometheus_metrics.pyimportedprometheus_client.Counterovercollections.Counter(name shadow), so thetop_domainscap trim always raised (silently swallowed) and the dict was never bounded — the DoS cap added in fix(dns-server): stop JWT leak in /metrics, gate metrics+status, harden DoS #87 was inoperative. Aliased toCollectionsCounter; the cap now actually enforces (regression test included).build.yml,server-release.yml): installrequirements-dev.txtin the coverage step (providesresponses), remove the|| truemask, set--cov-fail-under=90so the gate is real.Verification
responses-dependent suites): 99% (1951 stmts, 25 missing) — CI withresponseswill be higher. 583 tests pass. flake8 clean on all 15 changed files; workflows valid; gitleaks clean.--cov=appform (the--cov=path/to/file.pyform silently mismeasures — a pytest-cov quirk).Note
Another real bug surfaced while testing (not fixed here):
cert_manager.verify_client_certomits the padding arg on the RSA-CA signature check, so it always fails for RSA CAs (behind the mtls flag). Flagged for follow-up.🤖 Generated with Claude Code