Harness-engineering test-mock-patterns

name: test-mock-patterns version: "1.0.0" description: Mock modules, functions, and timers in Vitest and Jest to isolate units under test stability: static cognitive_mode: advisory-guide type: knowledge tier: 3 triggers:

• manual platforms:
• claude-code
• gemini-cli
• cursor
• codex tools: [] paths:
• "**/*.test.ts"
• "**/*.spec.ts"
• "**/*.test.tsx"
• "vitest.config.*"
• "jest.config.*"
• "playwright.config.*" related_skills:
• test-unit-patterns
• test-msw-pattern
• ts-generics-pattern stack_signals:
• vitest
• jest
• playwright
• testing-library keywords:
• vi.mock
• jest.mock
• vi.fn
• spyOn
• auto-mocking
• module-mocking metadata: author: community upstream: vitest.dev/guide/mocking.html state: persistent: false files: [] depends_on: []