Unit Testing

Use when restructuring code to improve quality without changing external behavior. Emphasizes safety through tests and incremental changes.

Writing effective step definitions and organizing test code

Use when implementing GraphQL resolvers with resolver functions, context management, DataLoader batching, error handling, authentication, and testing strategies.

Use when creating page objects or refactoring Playwright tests for better maintainability with Page Object Model patterns.

Use when jUnit extensions including custom extensions, rules, and conditional test execution.

Use when testing React Native Web applications. Provides patterns for Jest, React Native Testing Library, component testing, and web-specific testing strategies.

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.

Use when jest testing patterns including unit tests, mocks, spies, snapshots, and assertion techniques for comprehensive test coverage.

Use when jest configuration, setup files, module resolution, and project organization for optimal testing environments.