ci: Run the race detector on pull requests - #940
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The Makefile declares `go test ./... -race -count=1` as the project's test command, but no workflow invokes that target. ci.yml and pr-auto-review.yml both run plain `go test ./...`, and `-race` appears nowhere under .github/workflows, so the detector has never run on a pull request. The concurrent paths where a race is easiest to introduce and hardest to see in review, the turn loop, streaming provider I/O, the session store, cron, swarm mailboxes, and the cross-process lock paths in the credential and OAuth stores, are all unchecked. Add a dedicated job rather than putting -race on the existing matrix step. A race run is typically several times a plain one, and the matrix Test step is followed by build and smoke, so folding it in would serialize behind those and make that job the new long pole. On its own it runs alongside the Windows job, which is the current long pole at 9m29s, and a failure reads as a race rather than as a smoke failure. Run `make test` instead of repeating its flags, so the project's declared test command and what CI executes cannot drift apart again. Refs Gitlawb#939
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Included review availability: Your plan provides up to 4 included reviews per hour; 3 remain after this review. WalkthroughGitHub Actions adds an Ubuntu ChangesCI race detection
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: ⚪ Minimal · up to This change adds a dedicated race-detector check to pull requests without altering product behavior or runtime configuration, and no actionable merge-blocking risk remains beyond normal checks and review. Suggested reviewers: 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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In @.github/workflows/ci.yml:
- Around line 87-93: Add job-level permissions to the Race Detector job
identified by the race job definition, granting only contents read access so all
unspecified token permissions remain disabled; preserve the existing timeout and
runner configuration.
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.github/workflows/ci.yml
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Leaving evidence rather than a verdict since this is still a draft. Mark it ready and I will approve it. I checked the three claims and they all hold: The thing not visible in the diff is whether the job lands green, because a race job that arrives red blocks everyone. So I ran the whole tree under the detector: No data races anywhere. The only reproducible failure was One honest caveat on that: I ran on Windows and this job runs ubuntu, so it is evidence rather than proof. Different scheduling can surface a race one platform hides. I would still expect green. I did see Two small things while you are in there, neither blocking. The 30-minute ceiling is well judged, and your reasoning for why is the part worth keeping. Worth deciding explicitly whether this becomes a required check. As a non-required job it is advisory and a red run is easy to scroll past, which is roughly the position |
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Vasanthdev2004
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Vasanthdev2004
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Re-checked on the current head now that this is out of draft, and the three claims still hold: make test is go test ./... -race -count=1 at Makefile:22, -race appears nowhere else in ci.yml, and both action SHAs are byte-identical to the ones the workflow already pins.
The one thing I would still like a decision on, separately from this PR, is whether Race Detector becomes a required check. As an advisory job a red run is easy to scroll past, which is roughly where -race sits today. That is a repository setting, not a change to this file.
3 participants
Summary
make testisgo test ./... -race -count=1, but nothing invokes that target.ci.yml:79andpr-auto-review.yml:42both run plaingo test ./..., and-raceappears nowhere under.github/workflows. The race detector has neverrun on a pull request, so the concurrent paths where a race is easiest to
introduce and hardest to catch in review are unchecked: the turn loop, streaming
provider I/O, the session store, cron, swarm mailboxes, and the cross-process
lock paths in the credential and OAuth stores.
Fixes #939
Changes
One job added to
.github/workflows/ci.yml, 28 lines, nothing else touched.A dedicated job, not
-raceon the existing matrix step. A failure reads asa race rather than as a smoke failure, and the run does not serialize ahead of
Build binaryandSmoke binaryin the matrix job.I expected the duration to be the deciding factor and it is not. Measured on
this PR (run 32550027280), the job takes 4m47s against a 3m33s plain ubuntu
Teststep onmain, so roughly 1.3x rather than the several-fold cost Iassumed. It runs in parallel and finishes inside
Smoke (windows-latest), whichremains the long pole at 9m24s, so PR wall time is unchanged:
Ubuntu only. The detector instruments Go's memory model rather than anything
OS-specific, so one platform buys most of the coverage. At the measured cost,
widening to the full matrix is more affordable than I assumed when I wrote this,
and worth a follow-up, though Windows would need weighing separately since it is
already the long pole.
make testrather than repeating the flags. Invoking the target is the partthat stops this from recurring: a change to how the project tests takes effect
in CI without a second edit, instead of the Makefile and the workflow drifting
apart the way they already have.
timeout-minutes: 30. A race the detector newly reports can present as adeadlock rather than a failure, and the default job timeout is six hours.
Test plan
The CI run on this PR is the test.
Race Detectorappears and passes, alongsidethe five pre-existing checks, all green. There is no unit test to add for a
workflow job, and no way to exercise it before it exists on a branch.
Checked locally on
ad34dc8:.github/workflows/ci.ymlparses, and the job graph issmoke, race, performance, securitywith the new job's final step beingmake test.make -n testwas not run:makeis not installed on this machine. Thetarget was read from the Makefile, not executed. The hosted ubuntu runner has
both
makeand the C toolchain-raceneeds, so no setup step is required.Result of the first run
The open question was whether the suite has a pre-existing data race, which
would have made this red on arrival and needed fixing before the check could
block. It does not: the first run the detector has ever had on this codebase is
green, so the job is viable as a blocking check with no cleanup in front of it.
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