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Title: Setting Up Docker Selenium Grid for Parallel Test Execution
Introduction:
Docker Selenium Grid is a powerful tool that enables parallel test execution, allowing you to distribute your test suites across multiple containers. This tutorial will guide you through the process of setting up a Docker Selenium Grid for parallel test execution using Docker Compose. We'll use a simple example with Python and Selenium to demonstrate the concept.
Prerequisites:
Step 1: Docker Compose File
Create a docker-compose.yml file to define the Selenium Hub and multiple Selenium nodes.
This Compose file defines a Selenium Hub service and two Selenium Node services for Chrome and Firefox.
Step 2: Python Selenium Script
Write a simple Python Selenium script that will be executed in parallel. Save it as test_script.py.
This script opens a browser, navigates to "https://www.example.com," and performs a search for "Docker Selenium Grid."
Step 3: Run the Docker Selenium Grid
Open a terminal in the directory containing your docker-compose.yml file and run the following command:
This command starts the Selenium Hub, Chrome, and Firefox nodes in the background.
Step 4: Run Python Selenium Script
Open another terminal and run your Python Selenium script:
This script will run tests in parallel on both Chrome and Firefox nodes connected to the Selenium Hub.
Conclusion:
Setting up Docker Selenium Grid for parallel test execution is a straightforward process. It allows you to scale your test execution efficiently and ensures faster feedback on your test suites. Feel free to customize the example to suit your specific testing needs.
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