Swizec Teller - a geek with a hatswizec.com

    You don't need tests


    Unit tests are pointless. Integration tests are hard. Clicky tests are king.

    You write a piece of code, and you know it works. You just wrote it. You just ran it. You just saw it do everything you thought to try. Any unit or integration tests would have confirmed this.

    Your PM gets your code and tries it out. He or she finds a bunch of things you forgot. Bits of the spec that you missed, nuances in edge cases you didn't think of, strange things even the PM didn't think of.

    The designer finds a bunch of crap that should've been obvious, but you're not a designer, so you didn't think it was obvious.

    You get back to your code. Any tests you would have written wouldn't have caught any of this stuff. You didn't think of it, so you wouldn't have written a test. Even if you did assume you aren't perfect and needed tests. You don't need tests.

    You fix the things. You test the things. Sometimes, you test something twice because you notice fixing it broke something else. Keeping all the balls in the air is annoying, but totally doable. You don't need tests.

    Your PM says ??. Your designer says gorgeous.

    Your QA team gets the code. You tell them which manual test cases to do. It takes them half a day, but your code is good. You don't need tests.

    Your user gets your code. It breaks. They did a thing that you didn't think to try, your PM didn't think was related, and nobody told QA to try.

    Your user is nice enough to file a Usersnap report.

    "Nonsense", you say, "one in a million case. I can't reproduce that."

    Five more users find the bug. You notice a pattern. Your PM says this is now a production issue and should be fixed immediately.

    You drop everything you were doing. You fix the thing. You test the thing. Sometimes you test something twice because you notice fixing it broke something else. Keeping all the balls in the air is annoying, but totally doable. You don't need tests.

    Your PM says ??. You add a line item to QA's plate. It takes them half a day to test everything. QA says ??. Your code goes to production.

    Your users say nothing. Quiet users are good users. You don't need tests.

    Six months pass.

    It is time to refactor your code. You would kill for some tests.

    Did you enjoy this article?

    Published on October 6th, 2016 in Opinions, Personal, QA, tests

    Learned something new?
    Want to become an expert?

    Here's how it works 👇

    Leave your email and I'll send you thoughtfully written emails every week about React, JavaScript, and your career. Lessons learned over 20 years in the industry working with companies ranging from tiny startups to Fortune5 behemoths.

    Join Swizec's Newsletter

    And get thoughtful letters 💌 on mindsets, tactics, and technical skills for your career. Real lessons from building production software. No bullshit.

    "Man, love your simple writing! Yours is the only newsletter I open and only blog that I give a fuck to read & scroll till the end. And wow always take away lessons with me. Inspiring! And very relatable. 👌"

    ~ Ashish Kumar

    Join over 14,000 engineers just like you already improving their careers with my letters, workshops, courses, and talks. ✌️

    Have a burning question that you think I can answer? I don't have all of the answers, but I have some! Hit me up on twitter or book a 30min ama for in-depth help.

    Ready to Stop copy pasting D3 examples and create data visualizations of your own?  Learn how to build scalable dataviz components your whole team can understand with React for Data Visualization

    Curious about Serverless and the modern backend? Check out Serverless Handbook, modern backend for the frontend engineer.

    Ready to learn how it all fits together and build a modern webapp from scratch? Learn how to launch a webapp and make your first 💰 on the side with ServerlessReact.Dev

    Want to brush up on your modern JavaScript syntax? Check out my interactive cheatsheet: es6cheatsheet.com

    By the way, just in case no one has told you it yet today: I love and appreciate you for who you are ❤️

    Created by Swizec with ❤️