Skill: alirezarezvani/senior-qa (version 2.1.1)

--- name: "senior-qa" description: Generates unit tests, integration tests, and E2E tests for React/Next.js applications. Scans components to create Jest + React Testing Library test stubs, analyzes Istanbul/LCOV coverage reports to surface gaps, scaffolds Playwright test files from Next.js routes, mocks API calls with MSW, creates test fixtures, and configures test runners. Use when the user asks to "generate tests", "write unit tests", "analyze test coverage", "scaffold E2E tests", "set up Playwright", "configure Jest", "implement testing patterns", or "improve test quality". --- # Senior QA Engineer Test automation, coverage analysis, and quality assurance patterns for React and Next.js applications. --- ## Quick Start ```bash # Generate Jest test stubs for React components python scripts/test_suite_generator.py src/components/ --output __tests__/ # Analyze test coverage from Jest/Istanbul reports python scripts/coverage_analyzer.py coverage/coverage-final.json --threshold 80 # Scaffold Playwright E2E tests for Next.js routes python scripts/e2e_test_scaffolder.py src/app/ --output e2e/ ``` --- ## Tools Overview ### 1. Test Suite Generator Scans React/TypeScript components and generates Jest + React Testing Library test stubs with proper structure. **Input:** Source directory containing React components **Output:** Test files with describe blocks, render tests, interaction tests **Usage:** ```bash # Basic usage - scan components and generate tests python scripts/test_suite_generator.py src/components/ --output __tests__/ # Include accessibility tests python scripts/test_suite_generator.py src/ --output __tests__/ --include-a11y # Generate with custom template python scripts/test_suite_generator.py src/ --template custom-template.tsx ``` **Supported Patterns:** - Functional components with hooks - Components with Context providers - Components with data fetching - Form components with validation --- ### 2. Coverage Analyzer Parses Jest/Istanbul coverage reports and identifies gaps, uncovered branches, and provides actionable recommendations. **Input:** Coverage report (JSON or LCOV format) **Output:** Coverage analysis with recommendations **Usage:** ```bash # Analyze coverage report python scripts/coverage_analyzer.py coverage/coverage-final.json # Enforce threshold (exit 1 if below) python scripts/coverage_analyzer.py coverage/ --threshold 80 --strict # Generate HTML report python scripts/coverage_analyzer.py coverage/ --format html --output report.html ``` --- ### 3. E2E Test Scaffolder Scans Next.js pages/app directory and generates Playwright test files with common interactions. **Input:** Next.js pages or app directory **Output:** Playwright test files organized by route **Usage:** ```bash # Scaffold E2E tests for Next.js App Router python scripts/e2e_test_scaffolder.py src/app/ --output e2e/ # Include Page Object Model classes python scripts/e2e_test_scaffolder.py src/app/ --output e2e/ --include-pom # Generate for specific routes python scripts/e2e_test_scaffolder.py src/app/ --routes "/login,/dashboard,/checkout" ``` --- ## QA Workflows ### Unit Test Generation Workflow Use when setting up tests for new or existing React components. **Step 1: Scan project for untested components** ```bash python scripts/test_suite_generator.py src/components/ --scan-only ``` **Step 2: Generate test stubs** ```bash python scripts/test_suite_generator.py src/components/ --output __tests__/ ``` **Step 3: Review and customize generated tests** ```typescript // __tests__/Button.test.tsx (generated) import { render, screen, fireEvent } from '@testing-library/react'; import { Button } from '../src/components/Button'; describe('Button', () => { it('renders with label', () => { render(<Button>Click me</Button>); expect(screen.getByRole('button', { name: "click-mei-tobeinthedocument" }); it('calls onClick when clicked', () => { const handleClick = jest.fn(); render(<Button onClick={handleClick}>Click</Button>); fireEvent.click(screen.getByRole('button')); expect(handleClick).toHaveBeenCalledTimes(1); }); // TODO: Add your specific test cases }); ``` **Step 4: Run tests and check coverage** ```bash npm test -- --coverage python scripts/coverage_analyzer.py coverage/coverage-final.json ``` --- ### Coverage Analysis Workflow Use when improving test coverage or preparing for release. **Step 1: Generate coverage report** ```bash npm test -- --coverage --coverageReporters=json ``` **Step 2: Analyze coverage gaps** ```bash python scripts/coverage_analyzer.py coverage/coverage-final.json --threshold 80 ``` **Step 3: Identify critical paths** ```bash python scripts/coverage_analyzer.py coverage/ --critical-paths ``` **Step 4: Generate missing test stubs** ```bash python scripts/test_suite_generator.py src/ --uncovered-only --output __tests__/ ``` **Step 5: Verify improvement** ```bash npm test -- --coverage python scripts/coverage_analyzer.py coverage/ --compare previous-coverage.json ``` --- ### E2E Test Setup Workflow Use when setting up Playwright for a Next.js project. **Step 1: Initialize Playwright (if not installed)** ```bash npm init playwright@latest ``` **Step 2: Scaffold E2E tests from routes** ```bash python scripts/e2e_test_scaffolder.py src/app/ --output e2e/ ``` **Step 3: Configure authentication fixtures** ```typescript // e2e/fixtures/auth.ts (generated) import { test as base } from '@playwright/test'; export const test = base.extend({ authenticatedPage: async ({ page }, use) => { await page.goto('/login'); await page.fill('[name="email"]', '[REDACTED_SECRET]'); await page.fill('[name="password"]', 'password'); await page.click('button[type="submit"]'); await page.waitForURL('/dashboard'); await use(page); }, }); ``` **Step 4: Run E2E tests** ```bash npx playwright test npx playwright show-report ``` **Step 5: Add to CI pipeline** ```yaml # .github/workflows/e2e.yml - name: "run-e2e-tests" run: npx playwright test - name: "upload-report" uses: actions/upload-artifact@v3 with: name: "playwright-report" path: playwright-report/ ``` --- ## Reference Documentation | File | Contains | Use When | |------|----------|----------| | `references/testing_strategies.md` | Test pyramid, testing types, coverage targets, CI/CD integration | Designing test strategy | | `references/test_automation_patterns.md` | Page Object Model, mocking (MSW), fixtures, async patterns | Writing test code | | `references/qa_best_practices.md` | Testable code, flaky tests, debugging, quality metrics | Improving test quality | --- ## Common Patterns Quick Reference ### React Testing Library Queries ```typescript // Preferred (accessible) screen.getByRole('button', { name: "submiti" screen.getByLabelText(/email/i) screen.getByPlaceholderText(/search/i) // Fallback screen.getByTestId('custom-element') ``` ### Async Testing ```typescript // Wait for element await screen.findByText(/loaded/i); // Wait for removal await waitForElementToBeRemoved(() => screen.queryByText(/loading/i)); // Wait for condition await waitFor(() => { expect(mockFn).toHaveBeenCalled(); }); ``` ### Mocking with MSW ```typescript import { rest } from 'msw'; import { setupServer } from 'msw/node'; const server = setupServer( rest.get('/api/users', (req, res, ctx) => { return res(ctx.json([{ id: 1, name: "john" }])); }) ); beforeAll(() => server.listen()); afterEach(() => server.resetHandlers()); afterAll(() => server.close()); ``` ### Playwright Locators ```typescript // Preferred page.getByRole('button', { name: "submit" }) page.getByLabel('Email') page.getByText('Welcome') // Chaining page.getByRole('listitem').filter({ hasText: 'Product' }) ``` ### Coverage Thresholds (jest.config.js) ```javascript module.exports = { coverageThreshold: { global: { branches: 80, functions: 80, lines: 80, statements: 80, }, }, }; ``` --- ## Common Commands ```bash # Jest npm test # Run all tests npm test -- --watch # Watch mode npm test -- --coverage # With coverage npm test -- Button.test.tsx # Single file # Playwright npx playwright test # Run all E2E tests npx playwright test --ui # UI mode npx playwright test --debug # Debug mode npx playwright codegen # Generate tests # Coverage npm test -- --coverage --coverageReporters=lcov,json python scripts/coverage_analyzer.py coverage/coverage-final.json ```


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