Book Image

Angular 2 Cookbook

By : Patrick Gillespie, Matthew Frisbie
Book Image

Angular 2 Cookbook

By: Patrick Gillespie, Matthew Frisbie

Overview of this book

Angular 2 introduces an entirely new way to build applications. It wholly embraces all the newest concepts that are built into the next generation of browsers, and it cuts away all the fat and bloat from Angular 1. This book plunges directly into the heart of all the most important Angular 2 concepts for you to conquer. In addition to covering all the Angular 2 fundamentals, such as components, forms, and services, it demonstrates how the framework embraces a range of new web technologies such as ES6 and TypeScript syntax, Promises, Observables, and Web Workers, among many others. This book covers all the most complicated Angular concepts and at the same time introduces the best practices with which to wield these powerful tools. It also covers in detail all the concepts you'll need to get you building applications faster. Oft-neglected topics such as testing and performance optimization are widely covered as well. A developer that reads through all the content in this book will have a broad and deep understanding of all the major topics in the Angular 2 universe.
Table of Contents (18 chapters)
Angular 2 Cookbook
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Dedication
Preface

Writing a minimum viable unit test suite for a simple component


Unit tests are the bread and butter of your application testing process. They exist as a companion to your source code, and most of the time, the bulk of your application tests will be unit tests. They are lightweight, run quickly, are easy to read and reason about, and can give context as to how the code should be used and how it might behave.

Setting up Karma, Jasmine, TypeScript, and Angular 2 along with all the connecting configurations between them is a bit of an imposing task; it was deemed to be out of the scope of this chapter. It's not a very interesting discussion to get all of them to work together, especially since there are already so many example projects that have put together their own setups for you. It's far more interesting to dive directly into the tests themselves and see how they can actually interact with Angular 2.

Note

The code, links, and a live example related to this recipe are available at http://ngcookbook...