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

Creating a minimum viable unit test suite with Karma, Jasmine, and TypeScript


Before you jump into the intricacies of testing an Angular 2 application, it's important to first examine the supporting infrastructure that will make running these tests possible. The bulk of official Angular resources offer tests on top of Karma and Jasmine, and there's no reason to rock the boat on this one, as these are both fine testing tools. That said, it's a whole new world with TypeScript involved, and using them in tests will require some considerations.

This recipe will demonstrate how to put together a very simple unit test suite. It will use Karma and Jasmine as the test infrastructure, TypeScript and Webpack for compilation and module support, and PhantomJS as the test browser. For those unfamiliar with these tools, here's a bit about them:

  • Karma is a unit test runner. You run tests through Karma on the command line. It has the ability to start up a test server that understands how to find test files...