Full-stack & DevOps
🧪 Testing the complete application
End-to-end testing strategy: the testing pyramid, unit and integration with test doubles (mock/stub/spy), and E2E with a real browser.
What you'll learn
- Design a balanced testing strategy based on the testing pyramid
- Isolate units with test doubles (
mock,stub,spy) and inject dependencies - Write integration tests over endpoints and measure coverage
- Build E2E tests that walk through the user flow and mitigate
flakinessin CI
Lessons
The testing pyramidMany unit, fewer integration, few E2E. Unit and integration: doubles and assertionsIsolate with mock/stub/spy, test endpoints and measure coverage. E2E: the user in a real browserPlaywright/Cypress, flakiness and testing in CI.Practice this module in the app
DevPath is a hands-on course: you read the theory here; in the app you put it into practice with exercises that really run, offline.
Start free in the app →