What is Unit Testing? Why YOU Should Learn It + Easy to Understand Examples

If you haven't come across unit testing and wondering what it's all about then take some time and watch this video. It's a quick primer on unit testing with some super simple examples to illustrate some basics. Let me know if you have any questions in the comments!

*** GitHub Link for Code Example ***

*** Coaching ***

[AndySterkowitz]

Does this give you a basic idea about unit testing? Is there anything unclear or that could have been further explained?

[alimfuzzy]

Our devs have written in big letters on the board that reads "Write your tests first". Before they write the code they develop the test. It helps them ensure what they are building is well thought out.

[jt]

Apparently "Oh yeah, I test the shit outta units!" isn't a valid interview response.

[patrarus]

Thank you, Andy. You are a great teacher with much enthusiasm and passion for your work!

[mandor]

This is a really helpful video! I've always heard this topic but never really known how to approach it but this is a really friendly approach to unit testing since it seems like a monster when thinking about it initially.

[borischen]

Great video on Unit Testing, we briefly covered it in our boot camp. But simple, easy-to-understand examples!

[hmajor]

This video was very helpful Andy I heard of Unit testing before but never understood what if was for and how it works. Now I have a better understanding of both. If you have references on how to learn more about Unit testing you would like to share I would appreciate it. Thank again.

[yassineyounes]

I went into your channel and searched for the follow up videos but no luck!
Thanks for the great video and I hope you cover the rest in the future!

[_kazuki]

Hey Andy! Thank you for hitting the topic. It helps with a better understanding how unit testing works and from the looks of your github. I was able to kind of understand how to setup the testing but not fully.

[baatar]

I really like that you're providing coaching service, this is the first time I've seen anybody from YouTube offer that, very innovative of you :)

[kenfrancis]

Great video, I would love to see deeper technical stuff from you. Thanks

[fastersixth]

Trying to learn tests and this was amazing! Thank you! Great video!

[SuperPoower]

This video came at such a good time!! Im building an API and want it to do some Unit testing, but i was kinda lost. Thanks Andy!

[ChaosArtist]

Very helpful. I recently started looking into unit testing again and I was looking for some simple breakdowns of how unit tests work.

[hovarda]

Like Andy said my organization does not do this so when i had an interview with another company, they asked me if i write unit tests, I said no, and they looked at me like I was some alien. So now I am here, thanks for the video!

[corritaylor]

Question, I've been researching employment in my area and I've come to find that unit testing knowledge is needed. The 6 major of Unit testing involve Mocha, Chai, JSHint/JSLint, Cypress, Jasmine and JSUnit. I'm leaning more towards Cypress because I code with Node, but also am learning Angular and React down the line. Out of the 6 I listed, which do you use and why?

[jstnflnt]

Thanks for the beginner-friendly explanation

[Ryan-nqqp]

I think it would've been helpful for learners to hear that the use of interfaces does wonders for unit testing. Which would naturally lead to methods of those injected interfaces to then be mocked. Etc.

[cuichu]

I needed to have an idea about 2 subjects, Angular and Unite Testing. And you talked about Unit Testing IN your Angular video. WHAT ARE THE CHANCES?! Thank you.

[The_Nova_Glow]

You explain stuff SO WELL! I just wish the example code was in JavaScript or PHP