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

Chapter 7. Flip Flop

At this point, we should be confident about performing the initial implementation of an Angular application using TDD. Also, we should be familiar with using the test-first approach. The test-first approach is very good for the learning stage, but sometimes it's a time suck when we get a lot of errors. For simple and known behavior, it may not be good to go for the test-first approach.

We have already seen how the test-first approach works, so we can skip those steps by checking any feature without creating those components. Besides that, we can go one step further to make us more confident in writing our components faster. We can have our components ready and then write end-to-end test specs to test the expected behavior. If the e2e test fails, we can trigger an error in the Protractor debugger.

In this chapter, we will continue to expand our knowledge of applying TDD (but not the test-first approach) with Angular. We will not discuss the details of the basic Angular...