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Test-Driven iOS Development with Swift 4

You're reading from Test-Driven iOS Development with Swift 4 Write Swift code that is maintainable, flexible, and easily extensible

Product type Paperback

Published in Oct 2017

Publisher Packt

ISBN-13 9781788475709

Length 222 pages

Edition 3rd Edition

Languages

Swift

Tools

iOS

Concepts

iOS Development

Author (1):

Dr. Dominik Hauser

View More author details

Table of Contents (15) Chapters

Title Page

Credits

About the Author

About the Reviewer

www.PacktPub.com

Customer Feedback

Preface

1. Your First Unit Tests FREE CHAPTER

2. Planning and Structuring Your Test-Driven iOS App

3. A Test-Driven Data Model

4. A Test-Driven View Controller

5. Testing Network Code

6. Putting It All Together

7. Code Coverage

8. Where to Go from Here

Implementing the ToDoItem struct

A to-do app needs a model class/struct to store information for to-do items.

We start by adding a new test case to the test target. Open the to-do project that we have created in the Getting started with Xcode section of Chapter 2, Planning and Structuring Your Test-Driven iOS App, and select the ToDoTests group. Go to File | New | File..., navigate to iOS | Source | Unit Test Case Class, and click on Next. Put in the name ToDoItemTests, make it a subclass of XCTestCase, select Swift as the language, and click on Next. In the next window click on Create.

Now, delete the ToDoTests.swift template test case.

At the time of writing, if you delete ToDoTests.swift before you add the first test case in a test target, you will see a pop-up from Xcode telling you that adding the Swift file will create a mixed Swift and Objective-C target:

Note

This is a bug in Xcode 9.0. It seems that when you add the first Swift file to a target, Xcode assumes that there have to be Objective...

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Authors (1)

Dr. Dominik Hauser

Dr. Dominik Hauser

Dr. Dominik Hauser is an iOS developer working for a small company in western Germany. In over 11 years as an iOS developer, he has worked on many different apps, both large and small. In his spare time, Dominik builds small (often silly) apps and explores how he can become a better iOS developer. He talks at conferences, writes books, and is active in the iOS community in general. His most successful open source component (in terms of stars) is a pull-to-refresh control for a table view that consists of an actual SpriteKit game. Before Dominik became an iOS developer, he was a physicist, researching the most powerful photon sources within our galaxy.

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