testing-unit

# Unit Testing Run and manage unit tests across multiple languages and frameworks. ## Run Jest tests ```bash # Run all Jest tests npx jest # Run specific test file npx jest path/to/file.test.ts # Run tests matching a pattern npx jest --testPathPattern="auth" npx jest -t "should authenticate user" # Run in verbose mode npx jest --verbose ``` ## Run Vitest ```bash # Run all Vitest tests npx vitest run # Run specific file npx vitest run path/to/file.test.ts # Run tests matching a filter npx vitest run --reporter=verbose -t "login" # Run with UI npx vitest --ui ``` ## Run pytest ```bash # Run all tests python -m pytest # Run specific file or test python -m pytest tests/test_auth.py python -m pytest tests/test_auth.py::test_login -v # Run tests matching keyword python -m pytest -k "login or signup" # Run with verbose output python -m pytest -v --tb=short ``` ## Run Go tests ```bash # Run all tests go test ./... # Run specific package go test ./pkg/auth/... # Run specific test function go test -run TestLogin ./pkg/auth/ # Verbose output go test -v ./... ``` ## Run Rust tests ```bash # Run all tests cargo test # Run specific test cargo test test_login # Run tests in specific module cargo test --lib auth # Show stdout from tests cargo test -- --nocapture ``` ## Generate test file ```bash # Vitest: scaffold a test file (example) # Create src/feature.test.ts with describe/it/expect blocks # importing from vitest and the module under test # Jest: scaffold a test file (example) # Create src/feature.test.ts with describe/it/expect blocks # importing the module under test ``` ## Run with coverage ```bash # Jest coverage npx jest --coverage # Vitest coverage npx vitest run --coverage # pytest coverage python -m pytest --cov=src --cov-report=html # Go coverage go test -coverprofile=coverage.out ./... go tool cover -html=coverage.out -o coverage.html # Rust coverage (requires cargo-llvm-cov) cargo llvm-cov --html ``` ## Watch mode ```bash # Jest watch npx jest --watch # Vitest watch (default mode) npx vitest # pytest watch (requires pytest-watch) ptw -- -v # Go watch (requires watchexec or similar) watchexec -e go -- go test ./... ```