What is Unit Testing, Why We Use It, and Sample Test Cases 

This is a very underserved topic. Thanks for putting out a video on it. All devs need to know this.

I know this video is three years old, but it's very educational about this topic of unit testing. Thank you!

Fantastic and quick introduction to something that is whispered in hushed tones amongst junior developers.

Brian Voong you are to iOS what Andrew Ng is for Maching Learning : concise, clear, and brilliant !

First time I see such a simple way for the explanation. Great!

Not aa iOS programmer here but your video explanation is so clear that I understand the concept anyway. Thank you!

Not even coding in swift, but very interesting to watch. This channel is awesome. Talking about very important stuff for newbies. Much appreciated

First I heard of built in test functions. Reminds me of sales force development. Thank you.

Nice, elaborate and to the point. Need some advance examples but for gaining basic understanding this is superb.

Yes please! Can you make unit testing videos! Especially for networking and requests and model objects as well!!

Very nice! I like the new effects! It gives your videos a polished look

Unit testing is a way of testing one unit of a software application. A unit is the smallest piece of software that is isolated and tested as an individual for functioning. Avo Automation provides the best automated testing platform for all types of software testing, including unit testing

I don't use swift, but this was a really helpful primer on unit tests! I've worked at too many companies that don't see the value in them, so I'm working hard to start integrating them into our code base

Some of your videos made me convince to learn programming. Thank you! :)

I never bother to learn what's that UnitTesting in Xcode for before. thanks for this! nicely put along with real-life example use case. now that you mentioned about Continous Integration, would be great if you could talk more about it in your next video, what tools you're using, and so on! Cheers

Perfect timing as always! Thank you Brian...much appreciated!

This topic is most important for us. I understand it clearly, because your teaching method is great :) please also make a video on test case for web services, api testing. I'm waiting for your kind video.

Great video Brian, I always thought that testing is tedious but this really makes it logical and appealing.

logically structured and informative presentation...thanks

I really liked this video. I am relatively new to testing, and find it a big challenge sometimes, especially when it comes to UI. Can you do some more complex testing tutorial as well please?

Awesome video. Would love to see more about advanced unit testing

I have a second interview in about two hours, thanks for this video! Wish me luck!

Thanks, Brian. This was excellent!

Sean Allen and Brian Basically The professor we dint have in collage

I would *love* to see more videos about Unit Testing! Keep it up, please!

Hey Brian, how you doing? Always pushing us further, few code lines at time. Thanks for enlightening us, the mere mortal beings struggling to be relevant in this iOS universe. ;-)

Made this topic clear to me in a just few minutes. Many thanks!

Wooow! I was waiting for this!! Super!

Those pesky "junior developers"! Always breaking all the code that only I contribute to!

Thanks a lot for clear and easy explanation!!!!

You made it when I wanted to ask you to do such a video

This tutorial is super!!. Thank you, I understand it very easy

Learned about Unit Tests and that you can create extensions on primitive types. I'm new to Swift haha. By the way, your content is awesome!

Thanks Brian!

never knew test cases this much easier. Thanks for knowledge sharing 5*

Excellent explanation!

I can say only one thing.. He is a swift god

great work

very nice and easy to follow

Very very clear! Thanks a lot!

thanks Brian, very usefull

super like this video and much needed....waiting for your UI unit test video

Here is a video idea for you: Usually it is not hard to make tests. What is hard to determine is WHAT to test with unit testing. Because you don't want to test trivial things like square. What do you think of this idea? :)

Great vid man well done - only advice, step-by-step is always better, conciseness and simplicity are they keys to teaching skills. The least amount of words and points that say the most make knowledge acquirable for anyone in your medium.

very explanatory! thanks a lot.

This may seem a stupid question, and I apologize in advance for it, but I'll ask anyway: In your square function you used "3" for testing the square value, but let's say one uses "2" for testing; the result must be "4". But, if someone modifies the square function and "by mistake" changes the "self * self" to "self + self", if the testing value is "2" the result will still be "4". How does it assert that my function is right?

good explanation

Thanks for creating this video.

Very good explanation

Thanks for the video. This enlightened us on why unit test required and how to write test cases. Could you teach us how to write UITests and Mocks?

Your videos are excellent and great on teaching Swift. Please continue your hard work! Truly appreciate. Are you gonna teach Android in the future? If not, any recommendations who has best teaching on Android?

Sweet and right to the point.

Great, thanks a lot!!

Hey do you think I can use this to make sure all my products are priced correctly on third party apps?

Thanks Brian for all the amazing tuts. what should one unit test in a typical MVC iOS app, what parts should be covered by unit tests other than model layer and business logic?

write code to test code? what if you write bad tests?

Thanks for the video Sir!!

Awesome tutorial...Please explain about Automated UI testing in xcode objective-c

Hi there Brian, thanks for the great video, very informative. Just a tiny bit of constructive criticism. The audio compression ration of your voice is set veeeery high:) See if you can tone that setting down a bit - it will make your voice a bit more natural and reduce over-emphasizing of other unwanted noise. Again, thanks for the video, I especially like the fact that you use a very real world application!

How do we create tests for Watch App?

Could you make a video about your setup? I'm really curious what tech you're using. Love your videos btw ^^

Thank you so much... This is very precious 😀

Were test-driven development and agile common practices in your previous jobs? If they were, how did you implement tests in a short iterative development cycle?

superb

Awesome tutorial!!! I want to learn more about Unit testing. How can we use it for TDD approach? Recently I faced this in an interview, I got selected but still not feeling comfortable regarding TDD. Can you give us any tutorial for TDD approach with swift?

Amazing tut

With playground you can build and test your much faster and quicker than compiling code all the time, especially when your app gets complicated. I use these only for pushing this buttons

can you plz put some more content on TDD. thank you very much awesome video.

sooo, in this case you compare the result of your square function to a build in square function. What do you do when you have a more complex function to test? recreate the complex function in your test script and compare it against the one writen in the project? I am not really sure I can follow what you do here. Or would you manually calculate with fixed input value and then hard code the result value while comparing it against the function when given this specific input value?

You are the best!! Thank you so much!!

Does the application needs to be built for the unit test to run? OR it’s just like calling functions in our code with some predefined data?

excuse me, can you help me, i'm having a problem about error domain 9806 and 9807 requires a certificate of trust thank you

Super, thanks! What code editor are you using for app development? Do you do other development (Android, web) and if so, do you use the same environment? Thanks!

All the junior dev's got attacked 2:14

Heeyy what's up Brain ! Hope you are doing well ! I love your videos. We are learning so much things. I want to ask one question. Will you do some videos about the image processing in swift or do you think ?

I really like this video!

Woah... bryan you blew my mind!!! The square() on extension int is so cool!! But my question is, is there a reason why you did it on extension, instead of having function with arguments and returning square value??

Thanks Brian! Do we need to create separate file for each test? Or do we have to create file for group of tests, or file per logical module?

very cool!

Please one video on UI testing

Thank you for this brilliant and objective intro to XCTests

Sometimes the TC code will introduce bugs which go away when you remove the code.

Your awesome man!

Thank you for the video. I have worked for start up as “Internet of things developer” where my contribution was to design a prototype for our client where i programmed(C language) a microcontroller with sensor which is connected to AWS Internet of things cloud platform for a duration of 8 months which includes sending the sensor data from device to AWS IoT cloud. Now the company is not operating. Since I have less experience I now work in different domain to take care of myself as well as pay my bills. I am also learning python programming language from Udemy and also completed 6 small projects like building a website using Python flask, Open CV,Desktop database applcaition,Creating webmaps using Folium,Data analysis using pandas,numpy,webcam motion detector using webcam, Interactive Data Visualization with Bokeh. My query is, as a self taught programmer ,I would like to know from experience person like you that, will these projects help me land a job. I believe I can make a comeback and work even though I have gap in my career. But I would like to get suggestions on how can I apply with these skills in my resume,the duration of these above projects I can put in my profile. Also how can i start unit testing. Please correct me and suggest ,if I asked anything wrong.

Which hardware is using in unit testing

Can you make a video for CI/CD using JENKINS,GIT,

I have a question as a Junior Developer: What kind of app should I bring to the app store to utilize as my resume app? How large, complicated, etc. should it be (are the good app examples that employers would like to see)? I have the basics down, the general requirements for a junior position and I have created 'mini' apps that are very simple in nature, but I don't know what I should create, or how since if it is too big I might be wasting my time (in a way 'wasting time' as in not actively working towards getting a complete app to use as a job resume). Any advice would be great :)

Could you do some Unit and UI testing tutorials?

how you can display your phone on the PC? Some remote control ?

Is there an iOS Objective-C channel which is as good as this one?

*Let's built more apps with flutter*

Thank you for the video, is great and it help a lot =)

Hi Brian, can you make video about XMPP Chat services? At least quick information :)

very profesional, thank you

How we can test functions wich return Void?

Hey Brian I am implementing unit test case in my project but I am facing issue while importing the testable module getting warning as "File 'MyProjectNameTests.swift' is part of module 'MyProjectName'; ignoring import". My project includes the both objective-c and Swift code and my test case target is in Swift. Please give me resolution if any.

Hey Brian. Nice job. Can you please share Spotify demo and tinder demo as a course I saw it on your device :) Testing is a big part in the development and we should focus more on that but We have so much more to learn on iOS and Swift app development e.g. if the app is inactive and goes to the background what kind of stuff can we do at that state etc.. . Can you please make more apps that is the best way to learn. An application where we have different UIViewControllers and other important stuff from Apples framework involved like MapKit etc. would be perfect. Thanks

Jr Dev that just join the iOS team watching :v

Awesome

What if there is a bug in your unit test code, and do you have to do a unit test to test your unit test code, and then do you have to unit test your unit test ... infinitum or am I missing the point?