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add a serial test lane for concurrency-vulnerable tests

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Generalizes the pty split into an explicit "parallel=false" opt-out: a
`serial` tag (declared in dart_test.yaml). The parallel flutter run now
excludes `pty || serial`; a separate `flutter test --tags serial
--concurrency=1` pass runs the vulnerable ones. For the coverage gate the
two passes are real-merged by ci/merge_lcov.py (union DA, max hits, recompute
LF/LH) — a plain concat would double-count and corrupt the total.

Tag transcript_publisher's bus-republish test serial (it flaked in the
parallel pool). Gate verified green end-to-end at 95.08%.

T-193.

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
jpmschweitzer
2026-05-31 19:26:17 +02:00
co-authored by Claude
parent 5b739ef6a7
commit b6eef3fc2b
6 changed files with 81 additions and 5 deletions
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ci/test.sh
+16 -4
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@@ -30,10 +30,22 @@ echo "==> dart test (pty — unreliable under the flutter test runner; serial)"
# for resource-bound tests, vs. the old per-test `retry:` band-aid. (T-193)
dart test --concurrency=1 --tags pty test/pty/session_test.dart test/panes/registry_test.dart
# The parallel pool excludes both pty (runs under dart test, above) and
# serial-tagged tests (concurrency-vulnerable — run in their own --concurrency=1
# pass below). See dart_test.yaml + T-193.
if [[ "$coverage" == 1 ]]; then
echo "==> flutter test --coverage (gate; unit + widget + golden + a11y)"
flutter test --coverage --exclude-tags pty --timeout 60s
echo "==> flutter test --coverage (parallel pool; excludes pty + serial)"
flutter test --coverage --exclude-tags "pty || serial" --timeout 60s
cp coverage/lcov.info coverage/lcov.parallel.info
echo "==> flutter test --coverage (serial-tagged; --concurrency=1)"
flutter test --coverage --tags serial --concurrency=1 --timeout 60s
echo "==> merge coverage (parallel + serial passes → coverage/lcov.info)"
python3 ci/merge_lcov.py coverage/lcov.parallel.info coverage/lcov.info > coverage/lcov.merged.info
mv coverage/lcov.merged.info coverage/lcov.info
rm -f coverage/lcov.parallel.info
else
echo "==> flutter test (dev; no coverage, parallel)"
flutter test --exclude-tags pty --concurrency=12 --timeout 60s
echo "==> flutter test (dev; parallel pool, excludes pty + serial)"
flutter test --exclude-tags "pty || serial" --concurrency=12 --timeout 60s
echo "==> flutter test (dev; serial-tagged, --concurrency=1)"
flutter test --tags serial --concurrency=1 --timeout 60s
fi