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 the instrument panel

The instrument panel is a special panel in the Cypress Test Runner that is only visible when Cypress is providing you with additional information about your tests. The appearance of the instrument panel is triggered by specific commands that provide more information about the tests. The commands that trigger the instrument panel include cy.stub(), cy.intercept(), and cy.spy(). In this section, we will explore how we can use the instrument panel to display additional information about tests.

To achieve our goal of understanding how the instrument panel works, we will have to understand how intercepts, stubs, and spies work, along with what specific information is displayed on the instrument panel when stubs, routes, and spies are called in Cypress tests.

Intercepts

Cypress uses the cy.intercept() command to manage the behavior of HTTP requests in the network layer of a test. To understand intercepts, we first need to understand how network...