Testing · Senior · Question 67 of 75

How do you approach testing in a large legacy frontend without tests?

✓Correct answer: Start with a few E2E smoke tests of critical flows, then add integration tests around code you change
2Write unit tests for every file before changing anything
3Rewrite the app first

Explanation

Broad smoke tests give a safety net quickly; finer tests grow where the code changes.

Further reading

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