A payment application to demonstrate real-world usage of Cypress testing methods, patterns, and workflows.

Features

🛠 Built with [React][reactjs], [XState][xstate], [Express][express], [lowdb][lowdb], [Material-UI][material-ui] and [TypeScript][typescript] ⚡️ Zero database dependencies 🚀 Full-stack [Express][express]/[React][reactjs] application with real-world features and tests 👮‍♂️ Local Authentication 🔥 Database Seeding with End-to-end Tests 💻 CI/CD + [Cypress Cloud][cypresscloud]

Getting Started

The Cypress Real-World App (RWA) is a full-stack Express/React application backed by a local JSON database ([lowdb]).

The app is bundled with example data (data/database.json) that contains everything you need to start using the app and run tests out-of-the-box.

🚩 Note

You can login to the app with any of the example app users. The default password for all users is s3cret. Example users can be seen by running yarn list:dev:users.

Prerequisites

This project requires Node.js to be installed on your machine. Refer to the .node-version file for the exact version.

Yarn Classic is also required. Once you have Node.js installed, execute the following to install the npm module yarn (Classic - version 1) globally.

npm install yarn@latest -g

If you have Node.js' experimental Corepack feature enabled, then you should skip the step npm install yarn@latest -g to install Yarn Classic globally. The RWA project is locally configured for Corepack to use Yarn Classic (version 1).

Yarn Modern

This project is not compatible with Yarn Modern (version 2 and later).

Installation

To clone the repo to your local system and install dependencies, execute the following commands:

git clone https://github.com/cypress-io/cypress-realworld-app
cd cypress-realworld-app
yarn

Mac users with M-series chips will need to prepend PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true.

PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true yarn install

Run the app

yarn dev

🚩 Note

The app will run on port 3000 (frontend) and 3001 (API backend) by default. Please make sure there are no other applications or services running on both ports. If you want to change the default ports, you can do so by modifying PORT and VITE_BACKEND_PORT variables in .env file. However, make sure the modified port numbers in .env are not committed into Git since the CI environments still expect the application to run on the default ports.

Start Cypress

yarn cypress:open

🚩 Note

If you have changed the default ports, then you need to update Cypress configuration file (cypress.config.ts) locally. There are three properties that you need to update in cypress.config.ts: e2e.baseUrl, env.apiUrl, and env.url. The port number in e2e.baseUrl corresponds to PORT variable in .env file. Similarly, the port number in env.apiUrl and env.url correspond to VITE_BACKEND_PORT. For example, if you have changed PORT to 13000 and VITE_BACKEND_PORT to 13001 in .env file, then your cypress.config.ts should look similar to the following snippet:

{
  env: {
    apiUrl: "http://localhost:13001",
    codeCoverage: {
      url: "http://localhost:13001/__coverage__"
    },
  },
  e2e: {
    baseUrl: "http://localhost:13000"
  }
}

Avoid committing the modified cypress.config.ts into Git since the CI environments still expect the application to be run on default ports.

Tests

Type	Location
api	cypress/tests/api
ui	cypress/tests/ui
component	src/(next to component)
unit	src/__tests__

Database

• The local JSON database is located in data/database.json and is managed with [lowdb].

• The database is reseeded each time the application is started (via yarn dev). Database seeding is done in between each Cypress End-to-End test.

• Updates via the React frontend are sent to the [Express][express] server and handled by a set of database utilities

• Generate a new database using yarn db:seed.

• An empty database seed is provided along with a script (yarn start:empty) to view the application without data.

Author

Elias Winberg

• Github : https://github.com/elias-winberg
• Linkedin: https://linkedin.com/elias-winberg
• Website : https://elias-win.verce.app