Book Image

Test-Driven iOS Development with Swift

By : Dr. Dominik Hauser
Book Image

Test-Driven iOS Development with Swift

By: Dr. Dominik Hauser

Overview of this book

Test-driven development (TDD) is a proven way to find software bugs early. Writing tests before your code improves the structure and maintainability of your app. Test-Driven iOS Development with Swift will help you understand the process of TDD and how it impacts your applications written in Swift. Through practical, real-world examples, you’ll start seeing how to implement TDD in context. We will begin with an overview of your TDD workflow and then deep-dive into unit testing concepts and code cycles. We will showcase the workings of functional tests, which will help you improve the user interface. Finally, you will learn about automating deployments and continuous integration to run an environment.

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Test-Driven iOS Development with Swift
Dr. Dominik Hauser
Feb, 2016 | 218 pages
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Table of Contents (15 chapters)
Test-Driven iOS Development with Swift
Test-Driven iOS Development with Swift
Credits
Credits
About the Author
About the Author
About the Reviewer
About the Reviewer
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Your First Unit Tests
Your First Unit Tests
Building your first automatic unit test
Understanding TDD
TDD in Xcode
Advantages of TDD
Disadvantages of TDD
What to test
Summary
2
Planning and Structuring Your Test-Driven iOS App
Planning and Structuring Your Test-Driven iOS App
Task list view
Task detail view
Task input view
Structure of the app
Getting started with Xcode
Setting useful Xcode behaviors for testing
Summary
3
A Test-Driven Data Model
A Test-Driven Data Model
Implementing the ToDoItem struct
Implementing the Location struct
Implementing the ItemManager class
Summary
4
A Test-Driven View Controller
A Test-Driven View Controller
Implementing ItemListViewController
Implementing ItemListDataProvider
Implementing DetailViewController
Implementing InputViewController
Summary
5
Testing Network Code
Testing Network Code
Implementing asynchronous tests
Implementing a login request to a web service
Handling errors
Summary
6
Putting It All Together
Putting It All Together
Connecting parts
Serialization and deserialization
Functional tests
Summary
7
Code Coverage and Continuous Integration
Code Coverage and Continuous Integration
Enabling code coverage
Continuous integration
Automatic deployment with fastlane
Summary
8
Where to Go from Here
Where to Go from Here
What we have learned so far
Integration tests
UI tests
Behavior-Driven Development
TDD in existing projects
More information about TDD
Summary
Index
Index

Chapter 7. Code Coverage and Continuous Integration

We now have about 80 tests and the code that makes tests pass. But do the tests really test all the code? Using TDD, the code coverage of our tests should be quite high. Should.

Instead of guessing, we would rather have numbers that tell us how good the code coverage of our tests really is. Before Xcode 7, it was quite difficult to measure the coverage of a test suite. But with version 7, Apple added this feature to Xcode.

In this chapter, we will measure the code coverage of our tests, and we will take a look how we can use Xcode Server and fastlane to automate everyday tasks in our lives as iOS developers. The chapter is structured like this:

  • Enabling code coverage

  • Continuous integration

  • Automatic deployment with fastlane

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