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E2E Testing: A Tutorial and Architectural Guide
- End-to-end (E2E) testing validates critical flows in applications like user login requests for front-end and important back-end processes.
- E2E tests are located at the top of the testing pyramid, focusing on high-value paths in applications.
- Different E2E testing strategies include vertical (testing all layers) and horizontal (verifying complete user flows) approaches.
- E2E tests are resource-intensive, so prioritize them for essential application flows like login, registration, cart management, etc.
- Tips for writing E2E tests include focusing on reusable components, testing high-value user flows, and abstracting implementation details.
- Common pitfalls of E2E testing include overly complex tests, difficulty in debugging failures, and time-consuming test maintenance.
- System testing encompasses functional and non-functional validation, while E2E testing primarily focuses on user flow correctness.
- E2E tests are powerful but require effort; reduce maintenance by writing reusable components and leveraging tools like AI for test adaptability.
- E2E tests should be enjoyable to write, cover critical application flows, and use simple, reusable components for better outcomes.
- Written by Michiel Mulders, this tutorial and guide emphasize the importance and strategies of E2E testing for robust applications.
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