AI can now code apps. Cool, right? You tell it what you want, and boom, you have buttons, databases, and login flows appear like magic. No syntax errors, and no StackOverflow rabbit holes. It’s fast, it’s wild, so it’s… a little suspicious.
Welcome to the world of Vibe Coding, a new way of building software where the focus shifts from writing code to describing what the code should do. It’s not just a catchy phrase, it was coined by none other than Andrej Karpathy, a founding member of OpenAI and a leading voice in AI development. On his X (formerly Twitter) account, Karpathy described it like this:
“There’s a new kind of coding I call ‘vibe coding’, where you fully give in to the vibes, embrace exponentials, and forget that the code even exists. It’s possible because the LLMs (e.g. Cursor Composer w/ Sonnet) are getting too good. Also, I just talk to Composer with SuperWhisper so I barely even touch the keyboard.”
Sounds futuristic? That’s because it is. And with it comes a fresh challenge:
How do you test something you didn’t really code yourself?
The answer? Vibe Testing.
Conventionally, not understanding a codebase is risky business. It’s not just about getting lost while troubleshooting, but about unknowingly inheriting security vulnerabilities and logical flaws. When you’re unsure how or why your code works, you’re working in the dark.
This is exactly the challenge with vibe coding: you’re relying on AI to generate the code, often without reviewing every line. And that’s where vibe testing steps in as the safety net. It brings clarity, validation, and trust to applications built more on intuition than inspection.
First, let me tell you about what Vibe Testing is. Think of vibe testing as the QA cousin of vibe coding. Instead of static test cases, it’s:
- Exploratory: You play with the app like a real user.
- Prompt-driven: You ask the AI to generate or regenerate test flows.
- Intent-first: You test what the app should do, not just what it does.
Let me put it with a real-time example of testing a login function. Traditionally, you will create a workflow and inspect at every step whether it is functioning as defined. But with Vibe testing, you would just test by giving a text prompt to test login functionality.
Why Vibe Testing Matters?
In traditional development, you write specifications, tests, and then code. In AI-driven development, you describe what you want, and AI writes the app and maybe even the tests. You still need to validate whether the whole thing actually works in real-world use.
But Vibe testing fills this gap when,
- The login might work, but only for happy paths.
- The dashboard might load, but it forgets to handle 404s.
- The checkout page might process payments, but forgets to validate a missing address.
“Does this app do what I meant, not just what I said?”
That’s the essence of vibe testing.
We’ve talked at length about what Vibe Testing is and why it matters. But that brings us to the next big question,
Don’t Just Trust the Vibes, Test Them!
This is where tools like Testsigma come into play. Testsigma is a GenAI-powered, no-code test automation platform designed for modern QA workflows. With its natural language interface and intelligent test generation, it aligns perfectly with the intent-first, prompt-driven philosophy of vibe testing. Whether you’re testing web apps, mobile apps, APIs, desktop apps, SAP, or Salesforce, Testsigma helps you validate functionality without writing complex test scripts.
Test with AI, Vibe with Confidence. – Test your App now!
AI will write your app. AI might even write your tests. But it’s still up to humans to make sure it all feels right. Because at the end of the day, software built on vibes still needs to pass a vibe check!😉
