Implementing end-to-end tests with Cypress

Cypress is an end-to-end testing tool that works really well for single-page applications (SPAs) like ours. Cypress can run the whole application, simulate a user interacting with it, and check the state of the user interface along the way. So, Cypress is ideal for producing end-to-end tests on a SPA.

In this section, we are going to implement an end-to-end test for signing in and asking a question.

Getting started with Cypress 

Cypress executes in our frontend, so let's carry out the following steps to install and configure Cypress in our frontend project:

1. We'll start by installing cypress from the Terminal:

   > npm install cypress --save-dev

2. We are going to add an npm script to open Cypress by adding the following line to package.json:

   "scripts": {
     ...,
     "cy:open": "cypress open"
   }...