At the core of unit testing any Swift app is a thorough knowledge of how to create small, fast, and isolated tests that don’t depend on external systems. In this course, Advanced Unit Testing with Swift iOS Through Mocks and Stubs, you’ll learn how to remove external dependencies in your tests through the use of mocks and stubs. First, you’ll learn what mocks and stubs are.

Next, you’ll explore how to mock iOS framework classes and remove their dependencies. Finally, you’ll discover how to inject your newly created mocks into production classes, which allows for the use of one context in production and another in testing. When you’re finished with this course, you’ll have a foundational understanding of Swift unit testing with mocks and stubs that will help you as you move forward to building more reliable Swift apps.

https://www.pluralsight.com/courses/unit-testing-swift-ios-mocks-stubs