Agent-Skills.md

Agent Skills: Test Implementation Patterns

Test implementation patterns and conventions. Use when implementing unit tests, integration tests, or E2E tests, including RTL+Vitest+MSW component testing and Playwright E2E testing.

UncategorizedID: shinpr/claude-code-workflows/test-implement

Repository

shinpr/claude-code-workflows
shinprLicense: MIT
629100

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pnpm dlx add-skill https://github.com/shinpr/claude-code-workflows/tree/HEAD/skills/test-implement

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skills/test-implement/SKILL.md

Skill Metadata

Name
test-implement
Description
Implements React/TypeScript unit, integration, and browser E2E tests with the repository's configured runner, mocks, setup, and browser harness. Use when creating or completing frontend tests and generated test skeletons.

Test Implementation Patterns

Reference Selection

| Test Type | Reference | When to Use | |-----------|-----------|-------------| | Unit / Integration | references/frontend.md | Implementing React component tests with the repository's configured runner and network mocking layer | | E2E | references/e2e.md | Implementing browser-level E2E tests in the existing harness, or Playwright when the approved work introduces a harness |

Common Principles

AAA Structure

All tests follow Arrange-Act-Assert:

  • Arrange: Set up preconditions and inputs
  • Act: Execute the behavior under test
  • Assert: Verify the expected outcome

Test Independence

  • Each test runs independently without depending on other tests
  • No shared mutable state between tests
  • Deterministic execution — mock random and time dependencies

Naming

  • Test names describe expected behavior from user perspective
  • One test verifies one behavior