You're reading from End-to-End Web Testing with Cypress Explore techniques for automated frontend web testing with Cypress and JavaScript

Product type Paperback

Published in Jan 2021

Publisher Packt

ISBN-13 9781839213854

Length 240 pages

Edition 1st Edition

Languages

JavaScript

Tools

Cypress

Concepts

Test Driven Development

Author (1):

Waweru Mwaura

View More author details

Table of Contents (17) Chapters

Preface

1. Section 1: Cypress as an End-to-End Testing Solution for Frontend Applications

2. Chapter 1: Installing and Setting Up Cypress FREE CHAPTER

3. Chapter 2: Differences between Selenium WebDriver and Cypress

4. Chapter 3: Working with Cypress Command-Line Tools

5. Chapter 4: Writing Your First Test

6. Chapter 5: Debugging Cypress Tests

7. Section 2: Automated Tests with the TDD Approach

8. Chapter 6: Writing Cypress Tests Using the TDD approach

9. Chapter 7: Understanding Element Interaction in Cypress

10. Chapter 8: Understanding Variables and Aliases in Cypress

11. Chapter 9: Advanced Uses of Cypress Test Runner

12. Section 3: Automated Testing for Your Web Application

13. Chapter 10: Exercise – Navigation and Network Requests

14. Chapter 11: Exercise – Stubbing and Spying XHR Requests

15. Chapter 12: Visual Testing in Cypress

16. Other Books You May Enjoy

Understanding XHR requests

XMLHttpRequest (XHR) is an API that exists in all modern-day browsers and takes the form of an object whose methods are used to transfer data between a web browser sending the requests and the web server serving responses. The XHR API is unique as we can use it to update a browser page without reloading the page, request and receive server data after a page loads, and even send data to the server as a background task. In this section, we will cover the basics of XHR requests and their importance when it comes to the process of writing our Cypress tests.

Utilizing XHR requests in tests

XHR requests are a developer's dream as they allow you to silently send and receive data from the server without worrying about issues such as errors or waiting times when the client application needs to reload to perform an action. While XHR is a dream to developers, it is a nightmare for testers as it introduces uncertainties such as being unable to know when a...