Mastering UI Testing in Compose Multiplatform (CMP) for iOS and Android Apps with Kotlin Multiplatform (KMP)

Learn to effectively test your UI built with Compose Multiplatform (CMP) within the Kotlin Multiplatform (KMP) environment, focusing on both iOS and Android apps. Starting with an overview of testing concepts and their importance, you'll be guided through setting up a testing environment for a KMP project. You'll explore writing more testable code and using a common testing API for Android and iOS apps. You'll create test cases for various scenarios, including verifying UI components' behavior, validating user interactions and flows, and testing navigation between screens. You'll also take advantage of the Semantics tree for accessibility, create a mock or fake repository for isolated testing, and learn to debug and troubleshoot tests, making the testing process more intuitive and ensuring your code behaves as intended on both platforms.

Codelab Objectives

In this codelab, you’ll explore:

  • What is Testing, and why is it important
  • Setting up the Testing Environment
  • How to write more Testable code 
  • Testing in a Kotlin Multiplatform (KMP) environment 
  • Utilizing a common Testing API 
  • Writing UI Tests for both Android/iOS
  • Verifying UI components' behavior
  • Validating user interactions and flows
  • Taking advantage of the Semantics tree when testing and implementing accessibility
  • Testing the navigation between screens 
  • Creating a test double (Fake repository)
  • Breaking the fear of testing
  • Debugging and troubleshooting tests

Codelab Content

Meet the instructor

Stefan Jovanovic

Content Author & Course Instructor

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