Unit Testing Swift Mobile App (Udemy.com)
Apply Test-Driven Development(TDD) process to iOS mobile app development in Swift
Created by: Sergey Kargopolov
Last updated June 2026
What you will learn
- Unit Test iOS Mobile App
- XCTest Framework
- Create, Run and Debug Unit Tests
- Mock Dependencies
- Use Dependency Injection
- UI Testing
Course Description
Unit Testing is a must-have skill and this video course is about Unit Testing Swift code.
If you take this video course, you will learn how to follow a Test Driven Development process to implement a feature for an iOS mobile app built with Swift.
This video course starts with Unit Test basics and continues with a very practical set of lessons that demonstrates how to follow a Test-Driven process to implement the User Signup feature in the Model View Presenter mobile app.
By the end of this video course, you will have a very clear understanding of how to write Unit Tests and UI Tests for your Swift mobile application, and you will be able to test even very complex Swift code.
If you are a freelance developer you might postpone learning how to unit test iOS app for some time. But if you are planning to join a bigger team, then unit testing is a must-have skill for you to be able to work on important app features.
Have a look through the curriculum of this course to see what it covers. Watch a few sample video lessons. And if you have questions, I am always here to help you.
Instructor Details
- 4.6 Rating
2,356 Reviews
Sergey Kargopolov
I have more than 20 years of experience in building different types of software. I started my career as an Entrepreneur with award-winning web projects and currently, I’m a Full Stack Developer with a passion for teaching beginner programmers to reach their goals and assisting them in the development of their applications.
Follow me on Twitter, LinkedIn or Instagram to stay in touch.
Happy learning!
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Reviews
By Saiful Alam on 1/5/2026
Thank you for a great course. A few videos need updating, and it would be very helpful to provide the source code shown in the lessons. The API link used in the videos is no longer working and should be updated. Finally, please consider updating the course to reflect the latest Xcode release so examples and instructions match current tooling.
By Ashish Brahma on 3/31/2025
My experience with this course was very great. It was a good segue for my development journey as I was coincidently stuck on testing a sign up form on my portfolio website! Sergey's courses are precisely what a Mobile App Developer like me is looking for as a natural progression. His teaching style is beginner friendly and examples are very well thought out. Few suggestions to make this course even better would be to keep source code links updated, add at least English captions instead of auto-generated ones for each lesson and include more challenges at the end of each topic. It would be nice if source code is updated to SwiftUI and Swift Testing is also included in this course.
By Muhammad Danish Qureshi on 11/4/2023
A very good course for every iOS developer for learning TDD. Content and other things are good. Only one thing that is the good and bad as a same time, there are not any exercise for us. We only need to do tutorials not any other exercise. But over all its a very good start and explaining tutorial, I enjoyed it. Now I only need practice.
By Hubert Darryl Daryanto on 8/28/2023
At least for me who have two years of Full-Time working experience in iOS Development and wanted to implement TDD on current iOS Project for reduce need for manual testing prodecure when the project size is big, this course is great. If the introduction is combined with hands on immediately, it would be great. Because I often writing a notes while introduction. I more comfortable if learning by hands on immediately after a short Introduction
By Jorge García Mateos on 10/27/2022
Cubre todos los aspectos más importantes de la metodología TDD y va un paso mas allá (Tests Plans, Screenshots, UI Testing, etc.). Los ejemplos y la app de pruebas no se podían amoldar mejor a las explicaciones que siguen una pauta muy bien marcada con la que sin duda aprendes unas bases muy sólidas en el mundo de los tests.
By Pallavi Ligade on 4/5/2021
Wow!! I learn so many things here. Explanation in this course is very good. going to buy more course with same author. Thanks a lot uploading in this course and sharing your knowledge. I hope there will be more courses for TDD with same author for intermediate or higher level.
By Victor Roldan on 2/7/2021
Excelente curso, lo recomiendo 100%, muy detallados todos los ejemplos. Creo que en un solo sitio tuve algún inconveniente y obtuve ayuda rápidamente. Excellent course, all the examples were very helpful. Only one time I had a little problem and I got quick support. I recommend it 100%
By Andres Carmona Ortiz on 10/19/2020
One of the best courses I have taken on Udemy, it covers all the important topics about unit testing and UI testing for iOS with a great level of detail. It explains from the basics to the most advanced features, that allow you to have a practical understanding of how to test iOS apps. I totally recommend it, even if you have zero experience on testing for iOS apps.
By Rakesh R on 7/22/2020
Hi Sergey, i just loved your course. Your content organisation is very good. This certainly one of the best course i came across in Udemy, i highly recommend this to every one who wants to learn TDD. The only thing it is missing in my view is TDD lessons for VIPER and MVVM architectures. Modern day apps uses these architecture heavily and it would be really helpful if you can update the course to cover how to do TDD for MVVM and VIPER (Thats why i gave 4 and half rating). Thoroughly enjoyed your course !....Waiting for the course update which covers TDD for MVVM and VIPER:). Still waiting for your updated course to include TDD for MVVM and VIPER, because this course deserve 5 star rating.
By Simran Preet Singh Narang on 7/14/2020
One of the best course on any topic I have taken on Udemy. I have completed quite a number of courses here but this one has been the best one yet. Small clear concise videos and very clear instructions and explanations of each topic. And it has covered a vast number of topics. You definitely cannot retain all the info in one go. You have to visit the course again and again but going through it once will give you enough confidence you start implementing Unit and UI tests in your own projects.
Quality Score
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Overall Score : 92 / 100












