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  • Book Overview & Buying SwiftUI Cookbook
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SwiftUI Cookbook

SwiftUI Cookbook - Second Edition

By : Giordano Scalzo, Nzokwe
4.3 (20)
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SwiftUI Cookbook

SwiftUI Cookbook

4.3 (20)
By: Giordano Scalzo, Nzokwe

Overview of this book

SwiftUI provides an innovative and simple way to build beautiful user interfaces (UIs) for all Apple platforms, from iOS and macOS through to watchOS and tvOS, using the Swift programming language. In this recipe-based cookbook, you’ll cover the foundations of SwiftUI as well as the new SwiftUI 3 features introduced in iOS 15 and explore a range of essential techniques and concepts that will help you through the development process. The cookbook begins by explaining how to use basic SwiftUI components. Once you’ve learned the core concepts of UI development, such as Views, Controls, Lists, and ScrollViews, using practical implementations in Swift, you'll advance to adding useful features to SwiftUI using drawings, built-in shapes, animations, and transitions. You’ll understand how to integrate SwiftUI with exciting new components in the Apple development ecosystem, such as Combine for managing events and Core Data for managing app data. Finally, you’ll write iOS, macOS, and watchOS apps by sharing the same SwiftUI codebase. By the end of this SwiftUI book, you'll have discovered a range of simple, direct solutions to common problems encountered when building SwiftUI apps.
Table of Contents (17 chapters)
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Unit testing SwiftUI with ViewInspector

Unit testing or test-driven development are not buzzwords anymore, and in the iOS ecosystem, they are almost taken for granted. Any iOS developer should know about test tools and how to apply them.

XCTest and XCUITest are mature frameworks, and so you'd expect to have something similar for SwiftUI.

Unfortunately, SwiftUI doesn't come with any test capabilities from Apple. To test a SwiftUI view, you could rely on either UI testing, which is flaky by nature, or use snapshot testing, as you can see in the Snapshot testing SwiftUI views recipe.

However, the beauty of open source is that given a problem, the community somehow finds a solution. This is the case with SwiftUI unit testing and ViewInspector, a framework for the inspection and testing of SwiftUI views.

In this recipe, we'll implement a simple SwiftUI view with some interaction, and we'll see how to test its structure and activity.

Getting ready

Let...

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SwiftUI Cookbook
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