Beginner⏱ 5 min read

Sanity vs Smoke Testing

Smoke testing is a broad, shallow check that the build is stable enough for further testing. Sanity testing is a narrow, focused check after a fix to confirm a specific area is working correctly. Both are fast-pass/fail gates that protect testing time.

◈Key Points

Smoke test: 'Is the application alive?' — run after every build deployment.
Sanity test: 'Did this specific fix work?' — run after a targeted code change.
Smoke tests are broader (cover core features); sanity tests are narrower (cover a specific defect/change).
Failing a smoke test = reject the build immediately; failing a sanity test = reopen the defect.
Both should be automated and run in under 10 minutes to be effective as CI gates.

⚡ Expert Pro Tip

Your smoke test suite is your most valuable automated test set — if it's not trusted, nothing in your pipeline is. Invest in making it bulletproof and fast.