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

Cypress debugging on the command line

In this section, we will explore how to use the command line debugging properties of Cypress to troubleshoot the problems that we may encounter when running our tests. We will also explore the different debugging options that Cypress offers through the command line.

Cypress has a built-in debug module that can be exposed to users by passing debug commands before you run the tests using either cypress run or cypress open. To receive debugging output from the Terminal, the DEBUG environment variable needs to be set prior to the Cypress test runs in Mac or Linux environments.

The following scripts can be found in the chapter-03/ root directory's package.json file and are used to show debug output when the commands are executed. The first script can be used to show debug output when the cypress open command is used to run tests, while the second script can be used to show debug output when the cypress run command is used to run tests:

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