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Angular Cookbook

You're reading from   Angular Cookbook Over 80 actionable recipes every Angular developer should know

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Product type Paperback
Published in Aug 2021
Publisher Packt
ISBN-13 9781838989439
Length 652 pages
Edition 1st Edition
Languages
Tools
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Author (1):
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Muhammad Ahsan Ayaz Muhammad Ahsan Ayaz
Author Profile Icon Muhammad Ahsan Ayaz
Muhammad Ahsan Ayaz
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Toc

Table of Contents (15) Chapters Close

Preface 1. Chapter 1: Winning Components Communication 2. Chapter 2: Understanding and Using Angular Directives FREE CHAPTER 3. Chapter 3: The Magic of Dependency Injection in Angular 4. Chapter 4: Understanding Angular Animations 5. Chapter 5: Angular and RxJS – Awesomeness Combined 6. Chapter 6: Reactive State Management with NgRx 7. Chapter 7: Understanding Angular Navigation and Routing 8. Chapter 8: Mastering Angular Forms 9. Chapter 9: Angular and the Angular CDK 10. Chapter 10: Writing Unit Tests in Angular with Jest 11. Chapter 11: E2E Tests in Angular with Cypress 12. Chapter 12: Performance Optimization in Angular 13. Chapter 13: Building PWAs with Angular 14. Other Books You May Enjoy

Validating if a DOM element is visible on the view

In the previous recipe, we learned how to install and configure Cypress in an Angular app. There might be different cases in your application where you'd want to see if an element is visible on the DOM or not. In this recipe, we'll write some tests to identify if any elements are visible on the DOM.

Getting ready

The project for this recipe resides in chapter11/start_here/cypress-dom-element-visibility:

  1. Open the project in VS Code.
  2. Open the terminal and run npm install to install the dependencies of the project.
  3. Once done, run npm run cypress:test.

This should run the app at https://localhost:4200 and should open the Cypress window, as follows:

Figure 11.4 – Cypress tests running for the cypress-dom-element-visibility app

Now that we have the app and the Cypress tests running locally, let's see the steps of the recipe in the next section.

How to do...

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