Testing · Senior · Question 2 of 75

Why does Google's “Just Say No to More End-to-End Tests” argue against relying on E2E?

✓Correct answer: E2E failures are slow to arrive, hard to isolate and often flaky, so the feedback loop is weak
2E2E tests can't be automated
3E2E tests cover too little code

Explanation

Good tests are fast, reliable and isolate failures. A suite of mostly E2E tests fails on all three.

Further reading

Google Testing Blog: Just Say No to More End-to-End Tests ↗

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