Unit Testing

Use when configuring parallel test execution with TestNG including thread pools, suite configuration, and synchronization.

Use when configuring Docker environments for act, selecting runner images, managing container resources, or troubleshooting Docker-related issues with local GitHub Actions testing.

Use when rSpec fundamentals including describe, context, it blocks, let, and basic matchers for BDD testing.

Use when vitest testing patterns including unit tests, mocks, spies, and browser mode testing.

Use when adding automated tests to CocoaPods libraries using test specs. Covers test spec configuration, app host requirements, and testing patterns that integrate with pod lib lint validation.

Use when vitest performance optimization including fast execution, watch mode, and parallelization strategies.

This skill should be used when running .NET tests selectively with a build-first, test-targeted workflow. Use it for running tests with xUnit focus.

Use when pytest fixtures, conftest files, parametrize decorators, and fixture scopes for comprehensive test setup.

Use when advanced Pytest features including markers, custom assertions, hooks, and coverage configuration.

Master FastAPI dependency injection for building modular, testable APIs. Use when creating reusable dependencies and services.

Use when vitest configuration, Vite integration, workspace setup, and test environment configuration for modern testing.

Use when mocha configuration including reporters, config files, plugins, and CI integration.

Use when assertion libraries for Mocha including Chai with expect, should, and assert styles.

Use when implementing data-driven tests with TestNG DataProviders, factory methods, and parameterization patterns.

Use when cypress fundamentals including commands, assertions, fixtures, and E2E testing patterns.

Use when advanced Jest features including custom matchers, parameterized tests with test.each, coverage configuration, and performance optimization.

Use when jUnit parameterized tests with various value sources and test factories.

Use when facilitating BDD collaboration between developers, testers, and business stakeholders. Use when running discovery workshops and example mapping sessions.

Use when writing tests with Bun's built-in test runner. Covers test organization, assertions, mocking, and snapshot testing using Bun's fast test infrastructure.

Use when setting up Playwright test projects and organizing test suites with proper configuration and project structure.