Testing

Activation Conditions

• Writing or modifying tests
• Debugging test failures
• Setting up mocks
• Questions about test configuration

Quick Reference

test-unit-vs-integration.md

test-mock-patterns.md

test-zustand-stores.md

mock-transport.md

no-ui-rendering-tests.md

Commands

bun run test              # All tests (CI default)
bun run test:ci           # Sequential for CI
bun run test:unit         # Unit tests only
bun run test:integration  # Integration tests only
bun run test:ui           # Interactive UI
bun run test:watch        # Watch mode
bun run test:coverage     # Coverage report

Key Points

• .test.ts

  = unit (Node.js),

  .test.tsx

  = integration (JSDOM)
• Always use

  test-utils/test-utils.tsx

  for React component tests
• Test that features are fully wired: UI elements must connect to actual functionality

Feature Completeness Testing

• Verify event handlers call the correct functions with proper parameters
• Test that AbortSignals, callbacks, and other "plumbing" are passed through
• Don't assume UI presence means functionality works - test the connection

When to Use This Skill

• Writing

  .test.ts

  or

  .test.tsx

  files
• Mocking modules, stores, or transports
• Component behavior tests

Rules

rules/