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

Writing practical tests

In the previous section, we went through the basics of understanding different classifications for tests in Cypress and what the results of the classifications are. In this section, we will focus on writing tests that go beyond asserting that a Boolean value is equal to another Boolean value.

For any test to have value, it needs to have three fundamental phases:

  1. Setting up the desired state of the application
  2. Executing the action to be tested
  3. Asserting the state of the application after executed actions

In our practical tests, we will use our Todo application to write tests that correspond to the three fundamental phases required to write a meaningful test. To do this, we will complete the following steps:

  1. Visit the Todo application page.
  2. Search for an element.
  3. Interact with the element.
  4. Make an assertion on the application state.

These steps will guide the practical tests that we are about to write and will...