Setting Up Parallel Testing with Python, Cucumber, and Docker Compose
In this guide, we will walk you through the steps to set up parallel testing for your Python-based test suite using Cucumber as the test framework and Docker Compose for managing a Selenium Grid. Parallel testing allows you to distribute and run tests concurrently, improving test execution speed.
- Python installed on your system.
- Docker and Docker Compose installed.
1. Set Up Selenium Grid with Docker Compose
docker-compose.yml file to define your Selenium Grid configuration with multiple nodes (e.g., Chrome, Firefox). Here’s a sample
version: '3' services: chrome: image: selenium/node-chrome:4.13.0-20231004 # Configuration for Chrome node firefox: image: selenium/node-firefox:4.13.0-20231004 # Configuration for Firefox node selenium-hub: image: selenium/hub:4.13.0-20231004 # Configuration for Selenium Hub
Copy code docker-compose up -d
2. Install Required Libraries
Install the necessary Python libraries for your project using pip. For example, you may need pytest, pytest-bdd, and selenium.
3. Write Parallel Test Scenarios
Write your test scenarios using Cucumber and pytest-bdd. Organize your tests into separate feature files or scenarios that you want to run in parallel.
4. Configure Parallel Test Execution
For pytest with pytest-xdist:
Install the pytest-xdist plugin using pip:
5. Create a pytest configuration file (e.g., pytest.ini) with the following content to specify parallelization options:
[pytest] addopts = -n auto
6. Execute Parrallel tests
See gitlab project