Testing a Chrome Extension with Selenium in Python

This guide will walk you through the steps necessary to test a locally-built Chrome extension using Selenium in Python with Docker.

Prerequisites

• Docker (latest version recommended)
• Python 3.x
• Git

Clone the Project

git clone https://github.com/turbo-src/selenium-chrome-extension-testing.git
cd selenium-chrome-extension-testing

This command clones the project from GitHub and navigates into the project directory.

Setting Up a Virtual Environment

Step 1: Create a Virtual Environment

python -m venv venv

Step 2: Activate the Virtual Environment

source venv/bin/activate

After running this command, your shell prompt should change to show the name of the activated environment.

Step 3: Install Python Dependencies

pip install -r requirements.txt

This command installs the required Python packages specified in requirements.txt into the virtual environment.

Docker Setup

Step 1: Start the Selenium Server

docker run -d -p 4444:4444 -p 7900:7900 --shm-size="2g" selenium/standalone-chrome:latest

This command starts a new container with the Selenium standalone Chrome server.

Step 2: Run Your Test Script

With the Selenium server running in Docker and your Python virtual environment activated, you can now run your test script:

python test_selenium.py

Deactivating the Virtual Environment

When you are done, you can deactivate the virtual environment:

deactivate

After running this command, the shell prompt will return to normal, indicating that the virtual environment is deactivated.

Docker Cleanup (Optional)

Stop and Remove Docker Container

To stop the Selenium server running in the Docker container:

docker stop $(docker ps -q -f ancestor=selenium/standalone-chrome:latest)

Remove Docker Image (Optional)

docker rmi selenium/standalone-chrome:latest

This command removes the Docker image named selenium/standalone-chrome:latest.