test(cli): make the telemetry mutation run and the test suite faster without weakening them
维护者通常 1 天内回复
还没有人认领这个 Issue。
评估
- 难度
- 4/5
- 预计耗时
- 3-5 天
- 新手友好度
- 43/100
- Issue 类型
- 重构
- 描述清晰度
- 基本清楚
- 活跃度
- 活跃
- 技术栈
- typescript
- 领域
- ci-cd, testing-qa
调研方向
Start with the telemetry Stryker configuration and Vitest project and test ordering, then inspect tests/e2e/telemetry-report.e2e.test.ts and the golden-cell capture tests. Measure the full mutation run and pnpm test before changes; trace why static mutants run without tests. Done means timings are recorded, CI and mutation shards are green, and the mutation score is unchanged or every difference is explained without any previously killed mutant surviving.
由索引模型根据 Issue 内容生成。
描述
Problem
pnpm test:mutation:telemetry takes 62 min locally (4228 mutants) and dominates CI time; cd cli && pnpm test takes 39 s. Measured on next at 06dbb980:
- Vitest runs the
integrationproject beforeunitand the longest files first. Stryker stops a mutant at its first failing test, so most mutants run slow integration files before the unit test that kills them in milliseconds: 2321 of 3575 killed mutants were killed by an integration test although 2756 were also covered by a unit test. - 196 mutants time out. About 31 are real infinite loops; about 165 are slow kills (some are killed in 3 ms by a unit test run alone).
- 330 static mutants (7.8%) use 60.5% of all test runs.
pnpm testwall time is set by one file,tests/e2e/telemetry-report.e2e.test.ts(33 s).
Scope
- A test order for mutation only: unit tests first, then shortest first.
- Lower the Stryker timeout and set its concurrency once the order is fixed, measured.
- Find why the static mutants run outside any test, and make them cheap without dropping them from the score.
- Split the slowest e2e file so
pnpm testruns it in parallel. - Capture each golden cell twice, not three times.
Acceptance criteria
- Mutation score unchanged or each difference explained per mutant; no mutant that was killed before survives.
- No test deleted or weakened (no lower
numRuns, no dropped assertion). - Before and after timings of the full telemetry mutation run and of
pnpm test, same machine. - CI green, mutation shards included.
Out of scope
Rewriting tests for speed, changing the mutation floor.
- 主要语言
- TypeScript
- 星标
- 481
- 派生
- 45
- 平均合并
- 1 天 5 小时
- 30 天内合并 PR
- 81
环境准备
从这里开始
- 先读完整个 Issue，再读项目的贡献指南。
- 在 Issue 下留言说明你要接手 —— 这能避免两个人做同样的事。
- Fork 仓库，在一个分支上完成修改。
- 提交 Pull Request，并在描述里引用这个 Issue 编号。
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