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Frontend Testing Toolkit

$29

Vitest, Testing Library, Playwright, and Storybook integration for unit, integration, and E2E testing.

📁 28 files
MarkdownYAMLTypeScriptReactGitHub ActionsCI/CD

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📁 File Structure 28 files

frontend-testing-toolkit/ ├── LICENSE ├── README.md ├── configs/ │ ├── ci-testing.yml │ ├── storybook/ │ │ ├── main.ts │ │ └── preview.ts │ └── vitest.config.ts ├── free-sample.zip ├── guide/ │ └── testing-strategy.md ├── guides/ │ └── testing-strategy.md ├── index.html ├── src/ │ ├── components/ │ │ ├── DataTable.tsx │ │ ├── Modal.tsx │ │ └── SearchInput.tsx │ ├── hooks/ │ │ └── useDebounce.ts │ └── utils/ │ └── formatters.ts ├── stories/ │ ├── DataTable.stories.tsx │ ├── Modal.stories.tsx │ └── SearchInput.stories.tsx └── tests/ ├── e2e/ │ ├── playwright.config.ts │ └── search.spec.ts ├── integration/ │ └── search-flow.test.tsx ├── unit/ │ ├── DataTable.test.tsx │ ├── Modal.test.tsx │ ├── SearchInput.test.tsx │ └── useDebounce.test.ts └── utils/ ├── fixtures.ts ├── mocks.ts └── render-helpers.tsx

📖 Documentation Preview README excerpt

Frontend Testing Toolkit

A complete testing setup for React applications covering unit, integration, and end-to-end testing with Vitest, Testing Library, Playwright, and Storybook. This toolkit includes example components with their corresponding tests at every level, plus CI configuration and a testing strategy guide.

What's Inside

Example Components (`src/components/`)

Three real components that demonstrate common UI patterns — a search input with debounce, a data table with sorting and pagination, and a modal dialog with focus management. These aren't toy examples; they handle edge cases like keyboard navigation, loading states, and accessibility attributes.

Component Tests (`tests/unit/`)

Unit and integration tests written with Vitest + Testing Library. Each component has tests covering:

  • Rendering with various props
  • User interactions (click, type, keyboard)
  • Async behavior (debounce, data loading)
  • Accessibility (ARIA attributes, focus management)
  • Edge cases (empty states, error states, long text)

End-to-End Tests (`tests/e2e/`)

Playwright specs that test complete user workflows across multiple components. Includes Playwright configuration with multiple browser targets and screenshot comparison setup.

Storybook Stories (`stories/`)

Component stories for visual testing and documentation. Each story demonstrates different component states (default, loading, error, empty) and interaction patterns.

Test Utilities (`tests/utils/`)

Reusable helpers that reduce boilerplate across your test suite:

  • Custom render function with providers (router, query client, theme)
  • Mock factories for common data shapes
  • Fixture data for consistent test scenarios
  • Custom matchers and assertion helpers

Configuration (`configs/`)

Ready-to-use configuration files for Vitest, Storybook, and CI/CD pipelines.

Testing Strategy Guide (`guides/testing-strategy.md`)

A practical guide covering what to test at each level, how to decide between unit and integration tests, and how to avoid the common pitfalls that make test suites slow and fragile.

Quick Start


# Install dependencies
npm install -D vitest @testing-library/react @testing-library/jest-dom @testing-library/user-event
npm install -D @playwright/test
npm install -D @storybook/react-vite storybook

# Run unit tests
npx vitest

# Run E2E tests
npx playwright test

# Start Storybook
npx storybook dev -p 6006

File Structure


frontend-testing-toolkit/
├── README.md
├── LICENSE

*... continues with setup instructions, usage examples, and more.*

📄 Code Sample .yml preview

configs/ci-testing.yml # ============================================================================ # CI Testing Pipeline # ============================================================================ # # This GitHub Actions workflow runs your full test suite on every PR and push. # It demonstrates a professional CI setup with: # # - Parallel test stages (unit, integration, e2e) # - Dependency caching (npm cache + Playwright browsers) # - Coverage reporting # - Storybook build verification # - Slack/GitHub notification on failure # # Copy this file to .github/workflows/testing.yml in your project. # # ============================================================================ name: Testing Pipeline on: push: branches: [main, develop] pull_request: branches: [main] # Cancel in-progress runs for the same branch (saves CI minutes) concurrency: group: ${{ github.workflow }}-${{ github.ref }} cancel-in-progress: true # --------------------------------------------------------------------------- # Shared environment variables # --------------------------------------------------------------------------- env: NODE_VERSION: "20" # Suppress Playwright download progress (cleaner CI logs) PLAYWRIGHT_SKIP_BROWSER_GC: 1 jobs: # =========================================================================== # Stage 1: Lint + Type Check (fast feedback) # =========================================================================== lint: name: Lint & Type Check runs-on: ubuntu-latest steps: - uses: actions/checkout@v4 - uses: actions/setup-node@v4 with: # ... 165 more lines ...
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