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Test-Driven iOS Development with Swift 4 - Third Edition电子书

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30人正在读 | 0人评论 9.8

作       者:Dr. Dominik Hauser

出  版  社:Packt Publishing

出版时间:2017-10-30

字       数:25.3万

所属分类: 进口书 > 外文原版书 > 电脑/网络

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Use test-driven approach to develop highly-functional iOS apps with Swift 4 and Xcode 9 About This Book ? A practical guide to writing effective, organized, and clean code that works well ? Learn test-driven principles to help you build better-designed apps with fewer bugs ? A comprehensive overview of the techniques available for TDD in Swift Who This Book Is For To get the most out of this book, you will need some prior experience with Swift application development. You may have already heard about Test-Driven Development (TDD) but you don't need any prior experience of applying it to Swift applications. What You Will Learn ? Implement TDD in Swift application development ? Find bugs before you enter code using the TDD approach ? Use TDD to build models, view controllers, and views ? Test network code with asynchronous tests and stubs ? Write code that is a joy to read and maintain ? Develop functional tests to ensure the app works as planned In Detail 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). Style and approach Using a step-by-step approach, you will develop an entire iOS app using TDD. During the course of the book, you will explore different strategies for writing tests for models, View Controllers, and networking code.
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Title Page

Third Edition

Copyright

Test-Driven iOS Development with Swift 4

Third Edition

Credits

About the Author

About the Reviewer

www.PacktPub.com

Why subscribe?

Customer Feedback

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Downloading the example code

Downloading the color images of this book

Errata

Piracy

Questions

Your First Unit Tests

Building your first automatic unit test

What are unit tests?

Implementing a unit test example

Important built-in assert functions

Understanding TDD

The TDD workflow - red, green, and refactor

Red

Green

Refactor

TDD in Xcode

An example of TDD

Red - example 1

Green - example 1

Refactor - example 1

Red - example 2

Green - example 2

Refactor - example 2

A recap

Finding information about tests in Xcode

Test Navigator

Tests overview

Running tests

Running one specific test

Running all tests in a test case

Running a group of tests

The setUp() and tearDown() methods

Debugging tests

Breakpoint that breaks on test failure

The test again feature

The advantages of TDD

The disadvantages of TDD

What to test

Summary

Planning and Structuring Your Test-Driven iOS App

The task list view

The task detail view

The task input view

The structure of the app

The table view controller, the delegate, and the data source

Table view cells

The model

Other view controllers

The development strategy

Getting started with Xcode

Setting up useful Xcode behaviors for testing

Useful build behaviors

Testing behaviors

Summary

A Test-Driven Data Model

Implementing the ToDoItem struct

Adding a title property

Adding an itemDescription property

Removing a hidden source of bugs

Adding a timestamp property

Adding a location property

Implementing the Location struct

Adding a coordinate property

Implementing the ItemManager class

Count

Adding and checking items

Equatable

Removing all items

Ensuring uniqueness

Summary

A Test-Driven View Controller

Implementing ItemListViewController

Implementing ItemListDataProvider

Conducting the first tests

Fake objects

Using mocks

Checking and unchecking items

Implementing ItemCell

Implementing DetailViewController

Implementing InputViewController

Summary

Testing Network Code

Implementing tests using a web service

Implementing a login request

Handling errors

Summary

Putting It All Together

Connecting parts

The initial view controller

Showing the input view

Showing the detail view

Serialization and deserialization

Functional tests

Adding a UI test target

Recording and testing

Summary

Code Coverage

Enabling code coverage

Code coverage in Xcode

How much code coverage is enough?

Automatic deployment with fastlane

Installing fastlane

Setting up

Summary

Where to Go from Here

What you have learned so far

Integration tests

UI tests

Behavior-Driven Development

TDD in existing projects

Generating mocks with Sourcery

More information about TDD

Summary

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