How can I set up Docker for parallel testing with Selenium?

How can I set up Docker for parallel testing with Selenium?

To set up Docker for parallel testing with Selenium, you can use Selenium Grid. First, create a Docker Compose file that defines the Selenium Hub and the browser nodes.

What should my Docker Compose file look like?

Here's a basic example:

version: '3'
services:
  hub:
    image: selenium/hub
    ports:
      - "4444:4444"
  chrome:
    image: selenium/node-chrome
    depends_on:
      - hub
    environment:
      - HUB_HOST=hub
  firefox:
    image: selenium/node-firefox
    depends_on:
      - hub
    environment:
      - HUB_HOST=hub

How do I run my tests in parallel once the setup is done?

You can run your tests in parallel by configuring your test framework to execute tests concurrently. For example, if you're using TestNG, you can set the parallel attribute in your XML configuration.

Can I use other browsers besides Chrome and Firefox?

Yes, you can use other browsers like Edge or Safari by adding their respective Docker images to your Docker Compose file.