Testing Browser Connection

This guide provides simple test scripts to verify that your host machine can successfully connect to the Chrome browser on your CrOS device. Running this test is a crucial step to ensure your device setup and SSH tunnel are working correctly before proceeding to more complex testing scenarios.

Prerequisites

Ensure you have completed all the setup steps in the main Web Testing on CrOS guide. Your SSH tunnel must be active to run these tests.

Example: Browser Connection Test

This test connects to the remote CrOS instance and retrieves the content of the chrome://version page, printing the browser's command-line flags. This allows you to verify that remote debugging is enabled and that any other flags you have configured are correctly applied.

Puppeteer Example

The test-chrome-connection.js script uses puppeteer.connect() to attach to the remote browser.

You can view the full script content here: test-chrome-connection.js.

To run the test:

(host)

$ node test-chrome-connection.js ${PORT}

Selenium Example

The test-chrome-connection.py script uses Selenium's debuggerAddress option to attach to the remote browser.

You can view the full script content here: test-chrome-connection.py.

To run the test:

(host)

$ python test-chrome-connection.py --driver-path ./chromedriver --port ${PORT}

Playwright Example

The test-chrome-connection.ts script uses Playwright's chromium.connectOverCDP() to attach to the remote browser.

You can view the full script content here: test-chrome-connection.ts.

To run the test:

(host)

$ npx ts-node test-chrome-connection.ts ${PORT}