Headless browsers are simulation programs that execute like any other browser, but without any UI. As a result, you are saved from the common challenges of running Selenium tests, which can include slow rendering on the browser and interference of other apps running on your machine.
SeleniumWebDriver 3 and SeleniumWebDdriver 4 offer various configurations to run popular browsers like Chrome, Firefox, and Edge in headless mode. As a result, you get the following benefits:
- Optimize CI Pipeline - Can be used to execute automated tests remotely and release pipelines for continuous integration servers like GitLab.
- Web Scraping - Used from creating a web scraper or data extractor that can visit websites and collect data.
- Multi-browser Support - Supports the simulation of different browsers and their versions.
You can use the following code to run Firefox headless in the unit test framework (Python + Selenium):
from selenium.webdriver.firefox.options import Optionsoptions = Options()
options.headless = True
driver = webdriver.Firefox(options=options, executable_path=r'C:\Utility\BrowserDrivers\geckodriver.exe')
print ("Headless Firefox Initialized")