Top Cypress Interview Questions (2024)

1. What is Cypress?

2. Cypress is built on which language?

3. Explain Cypress Architecture?

4. What are the components of Cypress

5. What is Cy route?

6. What should we use in replacement of cy.route() in Cypress 6.0.0 future releases?

7. Does Cypress use mocha?

Q: What is Cypress?
Ans:

Cypress is a front end testing tool for the current web that is entirely based on JavaScript. Its goal is to reduce the difficulties that developers and QA engineers have when testing an application. Cypress is a more developer-friendly tool that functions directly in the browser and uses a unique DOM manipulation technique.

Q: Cypress is built on which language?
Ans:

It's written in Node.js and available as a npm module. It uses JavaScript to write tests because it is based on Node.js. However, 90% of the code can be done with Cypress's built-in commands, which are simple to understand.

It also comes packaged with jQuery (Javascript Library) and inherits several of jQuery's techniques for UI component identification and manipulation, as well as event handling, CSS animation, and Ajax.

Q: Explain Cypress Architecture?
Ans:

Most testing tools (such as Selenium) work by operating outside of the browser and performing network commands. The Cypress engine, on the other hand, runs entirely within the browser. In other words, your test code is executed by the browser.

It allows Cypress to listen in on browser activity and manipulate it in real time by manipulating the DOM and changing network requests and responses on the fly.

In the case of Selenium, each browser has provided its own driver, which communicates with the browser instances to carry out the commands. On the contrary, in Cypress, all commands are executed within the browser.

Canary, Chrome, Electron(Default), Chromium, Mozilla Firefox (beta support), and Microsoft Edge (Chromium-based) browsers are all supported by Cypress.

Unit, functional, integration, and end-to-end testing are all possible with Cypress. It meets all of the requirements for a Test Pyramid.

Q: What are the components of Cypress?
Ans:

Cypress Test Runner and Cypress Dashboard are the two main components included by default in the installation.

1. Test Runner

   It performs tests in an interactive runner that lets you see commands execute while simultaneously observing the application being tested. The important subcomponents of the test runner on which we should focus while running our test cases are Test Status, Url Preview, Viewport Sizing, Command Log, App Preview.

2. Dashboard Service

   The Cypress Dashboard is a service that allows you to view recorded tests, which is generally used when running Cypress tests through your CI provider. The Dashboard shows you what happened throughout the execution of your tests.

Q: What is Cy route?
Ans:

To manage the behaviour of network requests, use cy.route().

cy.server() and cy.route() have been deprecated in Cypress 6.0.0. Support for .server() and cy.route() will be moved to a plugin in a future release.

Q: What should we use in replacement of cy.route() in Cypress 6.0.0 future releases ?
Ans:

Alternatively, consider using cy.intercept(). In many scenarios, cy.route() can be replaced with cy.intercept(), and the call to cy.server() can be removed (which is no longer necessary).

Before

// Set up XHR listeners using cy.route()
cy.server()
cy.route('/users').as('getUsers')
cy.route('POST', '/project').as('createProject')
cy.route('PATCH', '/projects/*').as('updateProject')

After

// Intercept HTTP requests
cy.intercept('/users').as('getUsers')
cy.intercept('POST', '/project').as('createProject')
cy.intercept('PATCH', '/projects/*').as('updateProject')

Q: Does Cypress use mocha?
Ans:

Cypress has extended Mocha and adopted its bdd syntax, which is suitable for unit and integration testing.