Overview
Integration testing is the process of evaluating how different software modules or components interact with one another. It ensures that interfaces between units work as intended when combined.
Purpose
- Detect interface mismatches and data flow issues
- Validate end-to-end workflows across modules
- Catch integration-specific bugs early
Common Scenarios
- Connecting frontend and backend components
- Third-party API integrations
- Database and service layer communication
Testing Approaches
- Top-down: Test high-level modules first
- Bottom-up: Start with low-level modules
- Big bang: Test everything at once after combining
Related Context
