AgentSkillsCN

vitest-testing

使用Vitest（或Jest）添加或修复测试。当您需要编写测试、修复失败的测试，或改进测试结构与覆盖率时，可使用此功能。

SKILL.md
--- frontmatter
name: vitest-testing
description: Adding or fixing tests with Vitest (or Jest). Use when writing tests, fixing failing tests, or improving test structure and coverage.
user-invocable: false

Vitest / Jest Testing

When to Use

  • •Adding tests for new or existing modules (unit or integration).
  • •Fixing failing tests (determine whether the failure is in implementation or test; fix minimally).
  • •Improving test structure (describe, it/test, setup) or readability.

Principles

  1. •Layout: Place tests per project convention: *.test.ts / *.spec.ts next to source, or under test/ / __tests__/. Use describe and it/test with clear descriptions.
  2. •Assertions: Prefer explicit assertions (e.g. expect(x).toBe(y)). Keep expected values clear. Use type-safe matchers when available.
  3. •Setup: Use beforeEach/beforeAll for shared setup; mock only when necessary; prefer real dependencies for integration-style tests when fast enough.
  4. •Verification: Run the test script (e.g. npm test, npx vitest run, npx jest) to verify. Do not change behaviour beyond what is needed to fix the failure.

Note

If the project uses Jest instead of Vitest, the same principles apply; adjust commands (e.g. npx jest instead of npx vitest run).