Book Image

Test-Driven iOS Development with Swift 4 - Third Edition

By : Dr. Dominik Hauser
Book Image

Test-Driven iOS Development with Swift 4 - Third Edition

By: Dr. Dominik Hauser

Overview of this book

Test-driven development (TDD) is a proven way to find software bugs early. Writing tests before you code improves the structure and maintainability of your apps. Using TDD, in combination with Swift 4's improved syntax, means there is no longer any excuse for writing bad code. This book will help you understand the process of TDD and how to apply it to your apps written in Swift. Through practical, real-world examples, you’ll learn how to implement TDD in context. You will begin with an overview of the TDD workflow and then delve into unit-testing concepts and code cycles. You will also plan and structure your test-driven iOS app, and write tests to drive the development of view controllers and helper classes. Next, you’ll learn how to write tests for network code and explore how the test-driven approach—in combination with stubs—helps you write network code even before the backend component is finished. Finally, the book will guide you through the next steps to becoming a testing expert by discussing integration tests, Behavior Driven Development (BDD), open source testing frameworks, and UI Tests (introduced in Xcode 9).
Table of Contents (9 chapters)

What this book covers

Chapter 1, Your First Unit Tests, walks you through your first unit tests using Xcode and discusses the benefits of using TDD.

Chapter 2, Planning and Structuring Your Test-Driven iOS App, introduces the app you are going to write through the course of this book and how to set up a project in Xcode.

Chapter 3, A Test-Driven Data Model, discusses the TDD of a data model.

Chapter 4, A Test-Driven View Controller, shows you how to write tests for a view controller, and describes how to use fake objects to isolate micro features for the test.

Chapter 5, Testing Network Code, teaches you to test network code using stubs to fake a server component before it is developed.

Chapter 6, Putting It All Together, walks you through the integration of all the different parts developed in previous chapters and shows the use of functional tests.

Chapter 7, Code Coverage, shows you how to measure the code coverage of your tests using Xcode.

Chapter 8, Where to Go from Here, wraps up and shows you the possible next steps to improve your acquired testing skills.