Cypress Runner

Cypress Runner is a command-line interface (CLI) tool designed to launch specified frontend and backend servers before running Cypress tests. The CLI expects to find a .cypressrunnerrc configuration file in the current working directory (cwd).

Installation

To install Cypress Runner, you can use npm:

npm install -g @devmy/cypress-runner

Configuration

Cypress Runner requires a .cypressrunnerrc file in the directory where it is executed. This file should export a configuration object that matches the interface CypressRunnerConfig

Example .cypressrunnerrc File

{
  "debug": true,
  "startWebServerCommands": [
    { "command": "npm run start:frontend", "name": "frontend" },
    { "command": "npm run start:backend", "name": "backend" }
  ],
  "waitOn": {
    "resources": ["http://localhost:3000", "http://localhost:4000"],
    "delay": 1000,
    "timeout": 30000
  }
}

Example .cypressrunnerrc.json File

{
  "debug": true,
  "startWebServerCommands": [
    { "command": "npm run start:frontend", "name": "frontend" },
    { "command": "npm run start:backend", "name": "backend" }
  ],
  "waitOn": {
    "resources": ["http://localhost:3000", "http://localhost:4000"],
    "delay": 1000,
    "timeout": 30000
  }
}

Example .cypressrunnerrc.js File

/** @type import('@devmy/cypress-runner').CypressRunnerConfig*/
const config = {
  debug: true,
  startWebServerCommands: [
    { command: "npm run start:frontend", name: "frontend" },
    { command: "npm run start:backend", name: "backend" }
  ],
  waitOn: {
    resources: ["http://localhost:3000", "http://localhost:4000"],
    delay: 1000,
    timeout: 30000
  }
};

exports.default = config;

Example .cypressrunnerrc.ts File

import { CypressRunnerConfig } from '@devmy/cypress-runner';

const config: CypressRunnerConfig = {
  debug: true,
  startWebServerCommands: [
    { command: "npm run start:frontend", name: "frontend" },
    { command: "npm run start:backend", name: "backend" }
  ],
  waitOn: {
    resources: ["http://localhost:3000", "http://localhost:4000"],
    delay: 1000,
    timeout: 30000
  }
};

export default config;

Usage

After configuring your .cypressrunnerrc file, you can run Cypress Runner from your project’s root directory:

cypress-runner [cypress options]

All additional parameters passed to the CLI will be forwarded directly to Cypress.

Example

cypress-runner open

In this example, cypress-runner will:

1. Start the frontend and backend servers as specified in the .cypressrunnerrc file.
2. Wait until the servers are up and running based on the waitOn configuration.
3. Launch the Cypress test runner with the open option.

Options

debug

• Type: boolean
• Description: Enables debug logging for the Cypress Runner.
• Default: false

startWebServerCommands

• Type: Array<ConcurrentlyCommandInput> | ConcurrentlyCommandInput
• Description: Commands to start the frontend and backend servers. This uses the concurrently package to run multiple commands concurrently.

waitOn

• Type: WaitOnOptions
• Description: Configuration options for the wait-on package to wait for resources (such as HTTP endpoints) to become available before starting Cypress.

License

This project is licensed under the MIT License. See the LICENSE file for more details.