Book Image

Mastering iOS 14 Programming - Fourth Edition

By : Mario Eguiluz Alebicto, Chris Barker, Donny Wals
Book Image

Mastering iOS 14 Programming - Fourth Edition

By: Mario Eguiluz Alebicto, Chris Barker, Donny Wals

Overview of this book

Mastering iOS 14 development isn’t a straightforward task, but this book can help you do just that. With the help of Swift 5.3, you’ll not only learn how to program for iOS 14 but also be able to write efficient, readable, and maintainable Swift code that reflects industry best practices. This updated fourth edition of the iOS 14 book will help you to build apps and get to grips with real-world app development flow. You’ll find detailed background information and practical examples that will help you get hands-on with using iOS 14's new features. The book also contains examples that highlight the language changes in Swift 5.3. As you advance through the chapters, you'll see how to apply Dark Mode to your app, understand lists and tables, and use animations effectively. You’ll then create your code using generics, protocols, and extensions and focus on using Core Data, before progressing to perform network calls and update your storage and UI with the help of sample projects. Toward the end, you'll make your apps smarter using machine learning, streamline the flow of your code with the Combine framework, and amaze users by using Vision framework and ARKit 4.0 features. By the end of this iOS development book, you’ll be able to build apps that harness advanced techniques and make the best use of iOS 14’s features.
Table of Contents (22 chapters)

Testing the user interface with XCUITest

We have learned how to test your code and the logic behind it. In this section, we are going to learn how to test the UI of your app with XCUITest.

Knowing that most of your app logic is covered with tests is great. What's not so great, however, is adding your view controllers to your logic test. Luckily, you can use XCUITest to easily record and write tests that focus on the user interface of an app. XCUITest uses the accessibility features in iOS to gain access to the user interface of your app. This means that implementing user interface tests forces you to put at least a little bit of effort into accessibility for your applications. The better your app's accessibility is, the easier it will be to write UI Tests for.

XCUITest has two great features that we'll look at in greater detail. First of all, UI tests help you to enhance the accessibility of your apps. Secondly, it's easy to get started with UI testing because...