Book Image

Learning Angular - Third Edition

By : Aristeidis Bampakos, Pablo Deeleman
Book Image

Learning Angular - Third Edition

By: Aristeidis Bampakos, Pablo Deeleman

Overview of this book

Angular, loved by millions of web developers around the world, continues to be one of the top JavaScript frameworks thanks to its regular updates and new features that enable fast, cross-platform, and secure frontend web development. With Angular, you can achieve high performance using the latest web techniques and extensive integration with web tools and integrated development environments (IDEs). Updated to Angular 10, this third edition of the Learning Angular book covers new features and modern web development practices to address the current frontend web development landscape. If you are new to Angular, this book will give you a comprehensive introduction to help you get you up and running in no time. You'll learn how to develop apps by harnessing the power of the Angular command-line interface (CLI), write unit tests, style your apps by following the Material Design guidelines, and finally deploy them to a hosting provider. The book is especially useful for beginners to get to grips with the bare bones of the framework needed to start developing Angular apps. By the end of this book, you’ll not only be able to create Angular applications with TypeScript from scratch but also enhance your coding skills with best practices.
Table of Contents (19 chapters)
1
Section 1: Getting Started with Angular
4
Section 2: Components – the Basic Building Blocks of an Angular App
9
Section 3: User Experience and Testability
15
Section 4: Deployment and Practice

Testing routing

Just like components, routes play an essential role in the way our applications deliver an efficient user experience. As such, route testing becomes paramount in ensuring a flawless performance. There are different things that we can do with routing, and we need to test for different scenarios:

  • Ensure that the navigation targets the right route URL.
  • Ensure that the correct parameters are made available so you can fetch the correct data for the component or filter the dataset that the component needs.
  • Ensure that a particular route ends up loading the intended component.

Let's learn more about how to test all of the scenarios in the following sections.

Testing the navigation URL

The most common feature of an Angular app with routing is a component that contains some anchor elements with routerLink directives on them. As we learned in Chapter 7, Navigate through Components with Routing, a routerLink directive can also contain parameters...