Testing Register API with Postman | NodeJS Backend Dev #100DaysOfCode #Shorts

🎓 Hey everyone! I’m a 2nd-year CSE student at IIITK — welcome back to Focus & Flow, your cozy corner for study motivation and deep work sessions!

🚀 Day 37: Debugging with Precision — API Testing with Postman
Today was all about making sure what I built actually works — I dived deep into testing APIs using Postman. It's not just about sending requests; it's about understanding your backend through every response.

🛠 What I explored today:
🔍 Sent requests to my Register API to simulate real user sign-ups
🧪 Validated responses for different scenarios — success, missing fields, duplicate users
📋 Used Postman’s collection runner for repeated tests
📎 Learned how to structure tests using request scripts and pre-request scripts
🛑 Handled edge cases and server errors gracefully

🎯 Focus for the day:
✔ Building confidence in backend logic through testing
✔ Identifying and fixing bugs quickly
✔ Writing meaningful API response messages
✔ Practicing error-first development

💡 Realization of the day:
"Code is theory, testing is truth. Every response tells a story — listen carefully and your system becomes bulletproof."

🧱 Brick by brick, the backend is not just working — it’s reliable. Testing with Postman added that crucial layer of trust and transparency in the API development process.

🔗 Connect with me:

🎶 Music Used
Track: breathe slow
Artist: Rook1e

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#BackendDev #NodeJS #ExpressJS #PostmanTesting #APITesting #CleanCode #100DaysOfCode #FocusAndFlow #StudentDeveloper #IIITK #BuildInPublic #WebDevDiary