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fix(testing): Show why the test database reset failed - #2878
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Co-Authored-By: Claude <noreply@anthropic.com>
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Co-Authored-By: Claude <noreply@anthropic.com>
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Navigate logical layers of code changes, visualize relationships, and explore their blast radius. 📝 SummarySummary by CodeRabbit
WalkthroughThe API Vitest environment captures output from the database reset command. On failure, it logs available output and throws a formatted error with the command, optional exit code, and up to 4,000 trailing output characters. ChangesDatabase reset diagnostics
Priority: ➖ Normal Severity of issue fixed: Medium Merge Risk: 🟡 Moderate · up to A verbose database reset can prevent API tests from starting, and some reset failures still lack the reason the process stopped. Address these diagnostics and setup failures before merging. Security Architecture ReviewSecurity architecture risk: 🔵 Low · up to The change is confined to test-database setup. It could cause sensitive command output to be retained in test reports, and unusually large output could interrupt a reset. No production entrypoint or broader deployment change is shown. Retained concerns
Security review detailsSecurity Blast Radius
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🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 2 files. (1 skipped: 1 unsupported.)
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| Command | Status | Duration | Result |
|---|---|---|---|
nx run-many -t build:pack --exclude create-ceda... |
✅ Succeeded | 24s | View ↗ |
nx run-many -t build |
✅ Succeeded | <1s | View ↗ |
nx run-many -t build --output-style=stream |
✅ Succeeded | 2m 53s | View ↗ |
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☁️ Nx Cloud last updated this comment at 2026-09-27 20:23:42 UTC
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| it('captures the reset command output instead of inheriting stdio', async () => { |
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Not adding this. The success path is two lines that print result.stdout with console.log and result.stderr with console.error; there's no transformation to get wrong. The tests cover what this PR is about: that a failed reset's output ends up in the thrown error. I'm not spending a CI round on a test for plain console.log forwarding.
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That’s fair. The success path only conditionally forwards the already-captured stdout and stderr directly, with no formatting or transformation, while the failure behavior is the substantive regression risk this PR addresses. I’ll withdraw this test request; no additional success-case test is needed.
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Actionable comments posted: 2
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Inline comments:
Review comments at @packages/testing/src/api/vitest/CedarApiVitestEnv.ts:
- Line 139: Update the reset subprocess invocation using pmExec and result to
use Execa’s streaming API with buffering disabled; forward stdout and stderr
while retaining only bounded output tails for failure diagnostics, and preserve
the existing failure handling.
- Line 156: Update the failure-reason construction passed to formatDbResetError
so a numeric exit code with no captured output retains result.message, while a
missing exit code with captured output includes result.shortMessage alongside
the output. Preserve the existing behavior for other reset failures.
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.changesets/2878.mdpackages/testing/src/api/vitest/CedarApiVitestEnv.tspackages/testing/src/api/vitest/__tests__/CedarApiVitestEnv.test.ts
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When the api-side Vitest environment (
CedarApiVitestEnv) fails to reset thetest database, the developer only sees a serialized execa error with
stdout: undefined, stderr: undefined. The reset runs inside a Vitest poolworker with
stdio: 'inherit', so Prisma's actual error message never reachesthe terminal and there is nothing captured to attach to the error.
The reset command's stdout and stderr are now captured (
reject: false, defaultpipes). When the command fails:
console.errorErroris thrown whose message leads withFailed to reset the test database (exit code N)., followed by the command and its output. Outputlonger than 4000 characters keeps only the end, where Prisma prints its
error. When there is no output (e.g. the command can't be started), the
message falls back to execa's own error message.
When the command succeeds, its stdout and stderr are forwarded with
console.log/console.error, so Prisma's usual output is still shown.There is no Jest equivalent of this setup in
@cedarjs/testingto update.Possible follow-up
The issue also suggests moving the database reset into a Vitest
globalSetupso it runs once per test run rather than once per worker. That is a larger
structural change (it also affects concurrent resets from multiple workers)
and is not part of this PR.
Fixes #2604