Book Image

End-to-End Web Testing with Cypress

By : Waweru Mwaura
1 (1)
Book Image

End-to-End Web Testing with Cypress

1 (1)
By: Waweru Mwaura

Overview of this book

Cypress is a modern test automation framework for web-based frontend apps. Learning Cypress will help you overcome the shortcomings of conventional testing solutions such as dependency graph problems, the steep learning curve in setting up end-to-end testing packages, and difficulties in writing explicit time waits for your tests. In End-to-End Web Testing with Cypress, you’ll learn how to use different Cypress tools, including time travel, snapshots, errors, and console output, to write fail-safe and non-flaky tests. You’ll discover techniques for performing test-driven development (TDD) with Cypress and write cross-browser tests for your web applications. As you advance, you’ll implement tests for a sample application and work with a variety of tools and features within the Cypress ecosystem. Finally, this Cypress book will help you grasp advanced testing concepts such as visual testing and networking. By the end of this book, you’ll have the skills you need to be able to set up Cypress for any web app and understand how to use it to its full potential.
Table of Contents (17 chapters)
1
Section 1: Cypress as an End-to-End Testing Solution for Frontend Applications
7
Section 2: Automated Tests with the TDD Approach
12
Section 3: Automated Testing for Your Web Application

Understanding page events

Cypress logs every main event that takes place when the tests are running. It can detect when a URL is changing, when a button is clicked, or even when an assertion is being made. Page events capture the important events that the DOM goes through when a test is running.

To demonstrate how page events work, we will use our Todo application, as we did in the previous chapter. Following the chapter-05 directory in our GitHub repository, we will create our test file in the Cypress integration subdirectory and name it debugging.spec.js. We will then create our test in the newly created spec file, which will navigate to the Todo application, add a todo item, and check for the page events that pop up in our Cypress test runner. The following code block will handle adding the todo item to our application:

it('can add a todo', () => {
      cy.get(".new-todo").type("New Todo {Enter}");
  ...