Integration Test Design

Tests that verify components work together correctly.

Context

You are designing integration tests. These test real interactions with databases, APIs, or file systems.

Domain Context

• Real Dependencies: Use real database, HTTP server, file system (or test containers)
• Contracts: Verify that components' assumptions about each other are correct
• Fewer Tests: Integration tests are slower; test key flows, not all paths
• Setup Cost: Creating realistic data is expensive; consider test factories
• Flakiness Risk: Real I/O introduces timing, concurrency issues

Instructions