Smoke Testing vs Sanity Testing: What’s the Difference? 🔥🧠
Hey QA fam! 👋 Ever been asked in an interview about the difference between smoke and sanity testing? It’s a classic question! They sound similar, but they’re actually different. Here’s the quick breakdown: Smoke Testing 🔥 Think: “Does this thing even turn on?” It’s a broad but shallow check to see if your app’s critical functions work at all. When to run it: • Right after a new build drops • Before starting detailed testing What you’re checking: • Can users log in? • Does the homepage load? • Do critical workflows start? Example: New build deployed → Quick smoke test checks login, navigation, basic functionality → If it fails, reject the build immediately. Sanity Testing 🧠 Think: “Did that bug fix actually work?” It’s a narrow but deeper check on specific functionality after a bug fix or small change. When to run it: • After a bug fix • After a minor code change What you’re checking: • Did the bug get fixed? • Do related features still work? Example: Dev fixed the “Forgot Password” link → Sanity test verifies the fix works and didn’t break related login features. Quick Comparison 📊 Smoke Testing: • Broad and shallow • Tests build stability • After new build • Accept/reject build Sanity Testing: • Narrow and deep • Tests specific functionality • After bug fix • Accept/reject fix The Easy Way to Remember 🏠 Smoke Test: Walking through a house checking if lights work, doors open, water runs. Basic stuff! Sanity Test: Going back to check if that leaky faucet the seller “fixed” actually works now. Bottom Line 🎯 • Smoke testing = “Is this build stable enough to test?” • Sanity testing = “Did that fix actually work?” Use both strategically and you’ll save tons of time! Happy Testing! 🚀 Your turn: Which one do you use most in your projects? Drop a comment! 💬