Book Image

Angular Test-Driven Development - Second Edition

By : Md. Ziaul Haq
Book Image

Angular Test-Driven Development - Second Edition

By: Md. Ziaul Haq

Overview of this book

<p>This is a complete guide that shows you testing techniques with Karma that will help you perform unit testing and end-to-end testing with Protractor. It will show you how to optimize your Angular development process using TDD techniques and ensure your final project is free of bugs. All examples in this book are based on Angular v2 and are compatible with Angular v4.</p> <p>We start by reviewing the TDD life cycle, TDD in the context of JavaScript, and various JavaScript test tools and frameworks. You will see how Karma and Protractor can make your life easier while running JavaScript unit tests. We will enable you to build a test suite for an Angular application and build a testable medium-to-large scale Angular application by handling REST API data.</p> <p>Building on the initial foundational aspects, we move on to testing for multiple classes, partial views, location references, CSS, and the HTML element. In addition, we will explore how to use a headless browser with Karma. We will also configure a Karma file to automate the testing and tackle elements of Angular (components, services, classes, and broadcasting) using TDD.</p> <p>Finally, you will find out how to pull data using an external API, set up and configure Protractor to use a standalone Selenium server, and set up Travis CI and Karma to test your application.</p>
Table of Contents (15 chapters)
Angular Test-Driven Development
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface

The Jasmine test suite for Angular


In the preceding example, we saw a Jasmine test suite for JavaScript testing, but what about for Angular, how should that look? Actually, there is no direct answer as, for the Angular project test suite, we will not use a browser-based test suite; we have a test runner with Karma for the test suite. But as we are familiar with the browser-based Jasmine test suite in the preceding example, let's see what that will look like if we make a similar one for the Angular project.

We will have to add a subfolder as src in the Angular project for the test spec, and then the project's folder structure will look like this:

Note

In the Angular project, we will use TypeScript rather than plain JavaScript as Angular officially suggests using TypeScript. So, we hope that we all know the TypeScript syntax and know how to compile to JS.

In this book, for the Angular test suite, we will use SystemJS as the module loader, as Angular officially suggests it; we will take a look...