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

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.

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

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.

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.

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!

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!

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

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

Man it is so hard to self educate yourself lol glad to have KZfaq lol

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.

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

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

Unit Testing == Testing a single 'unit' of your code. That unit is as small as you define. Most of the time I've seen it down to the individual method or function level but it could be as small as a single statement if you really wanted to put the work into it.

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

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!

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.

I don’t understand why most KZfaqrs(Andy included) don’t talk more about the importance of KNOWING algorithms AND time complexity. Because when you go on an interview in 2019 or beyond, companies don’t care about your projects or your github. They know at this point that stuff can be fabricated. Taking a code test or doing the White board interview is more important than any of this gibberish.

Maturing as a developer is growing to love tests ❤

Wow when I watched this I thought how the hell would I do that for the thousands of lines of code I have? I guess what this is was a demonstration of just verifying that the correct output is produced by the input. Is that basically what "unit testing" is?

Memory Testing. To test individual class file with memory variable to make sure it can run by itself without fail. Validity of test data to make sure it can function within the code itself.

Bro, awesome video! I wish you can add captions to non-native english speakers like me. Pretty useful!!!

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

Finally a video that explains unit tests like I'm five.

I am taking a university degree they just threw material about testing .Guess what I have been stuck for days ,this video cleared a lot for me ..I kept on testing a function that connects to a database and ran into tonnes of errors

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

Thanks for the beginner-friendly explanation

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?

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.

Great Video! I do have a question: What is the difference between a Mock, a Stub and a Fake?

Better late than never ;) I'm about to start my thesis and I picked this subject based on my boss's recommendation and found it to be very interesting. I was confused at first, nontheless, about how it worked, but this video was great for setting me on track. Thank you!

i love the background view, amazing

i love your apartment, makes me miss chi

Great Description Andy!!

Great explanation. Short and sweet.

enthusiasm shines from your face!

Solid quick video. Thanks!

Bro, really nice video. Cheers from Brazil.

I've been a dev for 5 years soon and I still don't see why people get so hyped on unit tests. First of it shouldn't even be called test. It should be called business logic validation, because that's what the hell we are doing. Second. Why do these "tests" even exist? It's only there to validate the business logic and if you know the business logic and expected output then why would you need to test for it. It's expensive to write and maintain and it don't test user flows. It should be used in some cases but not all.

you highly encourage me to do some research, how do you think i got to your video?

Yep. Ty

Still I can't undertand why unit testing is useful. Is it valid for codes writen by a single person or is it only necssary for a group of programmers?

In previous lives, I used Test Track Pro by Seapine Technology, that company was acquired by Perforce and the product is now called Helix TCM, but the product was very powerful at the time, are you using similar things in your automated testing?

This was great! Thank you!

why caption is unavailable? 😭

Another very helpful video. Thanks!

I recently have had to use unit testing in a new role. Prior to that I had never used it and everything I programmed worked just fine. My personal opinion is that it's a huge waste of time. You want to program something, you program and run it. It crashes, you fix the code until it doesn't crach anymore. End of story. The more I stay in this software engineering role, the more I suspect this industry has invented a lot of additional stuff to delay the delivery of a product and waste the client's time. Apparently the purpose of unit testing is to ensure quality standards. Quality to me means the program works and does what the client asked, and does not crash when used. That can be achieved in a more straight forward way and faster without implementing unit testing. But hey, I get paid to do what I love: code. If that means wasting the client's time, let's chuck that up to a business decision.

Yo man, thanks so much for the explanation

clear, thanks.

Thanks for this info!

7:52 is usually during the second half of the day ;)

Hi Sir, can I become like you software developer in 3 years?

Awesome video!!

I always remember when he got his first job. I was just like " he made it " and here we go I taught myself as well and been working for 5 months thanks

Would the units you are typically testing be more complex than what is shown here? The test itself is more complicated than the unit it is testing in the example.

Highly informative

why can't you do more tutorials like this please? you probably won't ever answer me but please more videos like this.

Can you add subtitles? It will be perfect!!

Great vid, thanks! Can I ask - do you have an opinion on whether it is best to be using proper IDEs if you are doing this depth of work/testing?

could you please make a video for the xUnit over very simple programming that I can understand. I would really appreciate it.

So unit tests are written when we know the code is working and we don't want it to be changed in future. Am I correct?

How can you know if your test is complete and correct? Can you make a test for your test?

Thanks for the video! When you said 'do some research on your own', could you provide some good resource?

Great video!!!!

Thanks for the explain but i still dont get it. If i create a Tesla and within its constructor it uses the const char ptr "Tesla" to name it. Why should i test if its realy named "Tesla" ? I know that this is an easy example to understand but i dont get it. Its maybe the better way instead of put breaks or printf the Variables?

Thanks a Million for the Video. Can a self taught, code bootcamp grad be a Freelancer?

So how do you know what to test? I guess if you have a piece of logic that accepts data coming from different directions? My biggest issue rn is writing code to handle when data is not there.

Can you do more videos like this please

thank you

if i applied this stuff to the android app i've been making for work i feel like i would have to write about 300,000 tests... and the app isn't that complicated. how do you know which units to test or not?

thanks

thanks dude!

Why should I unit testing when I can debug? I really wanna know the reason why debugging isn't enough

Shouldnt the object result be instantiated by the CarCreationService class method and not the _teslaCreationService class method?

Unit testing has very limited usefulness for most web apps. 95% of the code that you write either interacts with the database or deals with the UI. And you can't unit test those things.

I would like to know response from the people who read this comment ,so If you have some time to spare, please answer my questions. 1) Have you ever been asked by your supervisor to skip the unit testing code in order to save time and push the code to production ? 2)Does your codebase contain broken tests from the past which was caused by another developer who did not bother to fix it before committing his changes to repository ?

Are we testing Te-Z-la or Te-S-la?

That weird moment when your expected output is 'tesla' And actual output is 'system crashed'

What books do you suggest to get muscles in Unit testing?

I watched the cloud fly.

What do you think about Head First Python, is it a good book to start learning Python?

Excllence. Never did this, and feel pretty stupid now ha

How and when are all these tests run?

Thank you for the video. I have one question, what if I have no mutch time to test my code? Here we are building apps in two three weeks, and I have no time to make tests. Can you suggest me something?

thanks!

I was just telling some student a about this they didn’t teach them in school

You have a really nice view from your office.

Note to any Developers: If your company is NOT implementing any tests in the codebase, please do yourself a favour and QUIT, you deserve so much than said company AND/OR suggest they implement some testing framework, if that fails refer to previous step. FYI, I have never been in a company that does NOT use some sort of testing framework whether it be Karma, Cypress, python unittest, Selenium, JEST, etc.

The sound quality is poor

Then you gotta test your tests

I still don't really understand why wouldn't you just print the value and compare it in your brain?

"Tezzla"

Awsome mate I'm here in 2021 I'm really committed in learning about how to host and code my own bot and server I have been trying to understand the language for months on end non stop 😴 I have been using the python progam to help me am I doing the right things

TeSla! Where did you get TeZZla from?😂

Unit test is useless. Ideally the unit test code should cover all possible scenarios and thus eliminate bugs. But most unit test code I've seen only uses one or two set of data. So passing these tests only means that the code passed the most basic check. Also there's the tedious job of fixing unit test code once the original methods are changed. This is particularly true in Salesforce development where unit tests have to be verified in deployment.

You look like john frusciante

i hate unit testing. i never do it.

too simple examples.. how to you test methods with no return?

he looks like pewdipie :)

Waste of time, extra work.