Integration testing is where software’s real behavior is exposed. Unlike unit tests, which isolate components, integration tests verify how modules interact, how APIs respond, how data moves across boundaries. This is the territory Mosh covers in his lessons: practical, streamlined methods that dig deep into the seams of your codebase.
Mosh’s approach to integration testing starts with clear scope. Test the flow between layers. Simulate production-like conditions. Mock only what is essential. This prevents false positives and reveals problems that surface only when systems talk to each other.
The process begins with setting up a controlled environment. Create a test database. Seed it with sample data. Configure your services with real dependencies as much as possible. With Mosh’s method, integration tests run automatically in CI/CD pipelines, ensuring no change slips through without being validated in the full stack context.