Mocking in PHPUnit (Test Services Without Real DB)

Mocking means replacing a real dependency with a fake one, so tests stay fast and reliable.

Example scenario

A service depends on a repository. In tests:

• you do not want to hit real DB
• you only want to test business logic

The idea (simple)

flowchart LR
  A[Test] --> B[Service]
  B --> C[Mock Repository]

This keeps tests stable and fast.

Next: API documentation with OpenAPI concept (so frontend teams can integrate easily).