Testing Swift (iOS/macOS) Applications

The book "Testing Swift (iOS/macOS) Applications" is a comprehensive practical guide that will help you master all aspects of testing native applications for the Apple ecosystem. Whether you are working on a small pet project or a corporate application with thousands of lines of code, quality testing is the key to stability and confidence in your release.

What is this book about?

The author consistently guides the reader from basic concepts to advanced techniques. You will learn:

• How to set up a test environment in Xcode and organize tests in a project.
• All the intricacies of XCTest: asynchronous tests, performance tests, parameterized tests.
• UI testing with XCUITest: recording, automation, working with dynamic elements.
• The principles of TDD (Test-Driven Development) and how to implement them in your workflow.
• Creating mocks, stubs, and fakes using protocols and dependency injection.
• Integration testing of the network layer, Core Data, UserDefaults, and other system frameworks.
• Continuous Integration (CI) for iOS/macOS: GitHub Actions, Bitrise, Jenkins.
• Code coverage and quality metrics.

Who is this book for?

• Junior and Middle iOS/macOS developers who want to write reliable code and refactor confidently.
• Team leads and architects implementing a testing culture in their team.
• Developers transitioning from other platforms to Swift and wanting to understand the specifics of testing in the Apple ecosystem.
• Students and beginners who want to learn to write clean and testable code from the start.

What will you gain after reading?

• A deep understanding of the testing philosophy in the Apple world.
• A set of ready-made templates and practices that can be immediately applied to your project.
• The ability to design architecture that is convenient for testing (MVVM, VIPER, Clean Swift).
• Skills in automating routine checks using UI tests.
• Confidence that your code works correctly in any scenario.

The book is written in a lively language, contains many code examples and real-world cases. All examples are available for download and have been tested on the latest versions of Swift and Xcode. This is not dry theory, but a practical guide that you will open again and again.

Make your application stable and your development process predictable. Start testing correctly today!