testing-patterns

Structure unit and integration tests using the Arrange-Act-Assert pattern to separate setup, execution, and verification phases. This testing approach improves readability and simplifies maintenance of your test suites.

The testing pyramid balances unit, integration, and end-to-end tests to optimize reliability and speed. It provides a repeatable framework that prioritizes fast unit tests as the foundation, reducing slow E2E test overhead.

Use mocking strategies like stubs, fakes, and spies in unit tests to isolate logic from external dependencies such as API layers and service integrations. This ensures tests remain fast, repeatable, and focused on specific components.

Testing anti-patterns include unstructured test organization and poor data strategies. Follow best practices like the AAA pattern and mocking principles to craft robust tests, avoid common pitfalls, and improve software reliability.

Choose unit tests for frontend components to verify isolated logic quickly, and integration tests to validate interactions across API layers and service integrations. Use test type selection criteria to match the component scope.

No specific testing framework is required. The mocking principles and testing patterns apply across software projects, providing framework-agnostic strategies for stubs, fakes, and spies to isolate logic and maintain clear test organization.