wdio-chromedriver-service

This service helps you to run ChromeDriver seamlessly when running tests with the WDIO testrunner. It uses the chromedriver NPM package that wraps the ChromeDriver for you.
Note: this service does not require a Selenium server, but uses ChromeDriver to communicate with the browser directly.
Obviously, it only supports:

capabilities: [{
    browserName: 'chrome'
}]

Installation

The easiest way is to keep wdio-chromedriver-service as a devDependency in your package.json.

{
  "devDependencies": {
    "wdio-chromedriver-service": "^8.0.0"
  }
}

You can simple do it by:

npm install wdio-chromedriver-service --save-dev

Note: You have to install chromedriver separately, as it's a peerDependency of this project, and you're free to choose what version to use. Depending of which version of Chrome you have installed on your system you should install the same version of chromedriver. Install it using:

npm install chromedriver --save-dev
# if you have Chrome 104 installed on your machine do
npm install chromedriver@104 --save-dev

Instructions on how to install WebdriverIO can be found here.

Configuration

By design, only Google Chrome is available (when installed on the host system). In order to use the service you need to add chromedriver to your service array:

// wdio.conf.js
export.config = {
  outputDir: 'all-logs',
  // ...
  services: [
    ['chromedriver', {
        logFileName: 'wdio-chromedriver.log', // default
        outputDir: 'driver-logs', // overwrites the config.outputDir
        args: ['--silent']
    }]
  ],
  // ...
};

Options

port

The port on which the driver should run on
Example: 7676
Type: number

path

The path on which the driver should run on
Example: /
Type: string

protocol

The protocol on which the driver should use
Example: http
Type: string

hostname

The protocol on which the driver should use
Example: localhost
Type: string

pollTimeout

The startup timeout in ms, it checks if the port is open before starting ChromeDriver and then checks again if the it is closed after starting it.
Example: 10000
Type: number

outputDir

The path where the output of the ChromeDriver server should be stored (uses the config.outputDir by default when not set).
Example: driver-logs
Type: string

logFileName

The name of the log file to be written in outputDir.
Example: wdio-chromedriver.log
Type: string

chromedriverCustomPath

To use a custome chromedriver different than the one installed through "chromedriver npm module", provide the path.
Example: /path/to/chromedriver (Linux / MacOS), ./chromedriver.exe or d:/driver/chromedriver.exe (Windows)
Type: string

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For more information on WebdriverIO see the homepage.