Cypress Practice Exercises: Essential Techniques for Mastering the Framework

Here’s a short practice exercise to get started with Cypress:

Exercise: Write a Cypress test for a simple web application

In this exercise, you will write a Cypress test for a simple web application that displays a list of items. The test will check that the list is displayed correctly and that clicking on an item in the list opens a new page.

Prerequisites

Before you can complete this exercise, you need to have Node.js and npm installed on your machine, as well as the Cypress testing framework. You can download them from the official Node.js website and install Cypress using the npm command npm install cypress --save-dev.

Steps

Create a new Cypress test file in the cypress/integration directory.
Use the describe function to create a new test suite, and the it function to create a new test case.
In the test case, use the cy.visit command to navigate to the web application.
Use the cy.get command to select the list of items on the page, and use the should assertion to check that the list contains the expected items.
Use the cy.contains command to select an item in the list, and use the click command to simulate a click on the item.
Use the cy.url command to check that the URL has changed to the expected value, indicating that a new page has been loaded.
Use the cy.get command to select an element on the new page, and use the should assertion to check that the element is displayed correctly.
Save the test file and run it using the Cypress Test Runner. Watch the test run in real-time and see any errors that occur.

Example Code

Here’s an example of what your Cypress test code could look like:

javascriptCopy codedescribe('My Cypress Test', () => {
  it('Displays a list of items and navigates to a new page', () => {
    cy.visit('https://my-web-application.com')
    cy.get('.item-list')
      .should('contain', 'Item 1')
      .should('contain', 'Item 2')
    cy.contains('Item 1').click()
    cy.url().should('include', '/item-1')
    cy.get('.item-details')
      .should('contain', 'Item 1 Details')
  })
})

In this example, we navigate to the web application and check that the list of items contains two items. We then click on the first item and check that the URL has changed to include /item-1. Finally, we check that the details of the item are displayed correctly on the new page.

Conclusion

In this practice exercise, you wrote a simple Cypress test for a web application. By following these steps and using the Cypress commands, you can create powerful and flexible tests for your own web applications.

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