I need to integrate my functional UI tests (Selenium/WebDriver) with my Jenkins CI system. The problem is that my Jenkins CI server has no display, so I must run my GUI tests in a headless X-server.
A colleague pointed me to PyVirtualDisplay, a Python wrapper for Xvfb and Xephyr.
This makes running headless Python Selenium/WebDriver tests very easy.
Here is some Python code showing WebDriver with a virtual display provided by Xvfb:
#!/usr/bin/env python
from pyvirtualdisplay import Display
from selenium import webdriver
display = Display(visible=0, size=(800, 600))
display.start()
# now Firefox will run in a virtual display.
# you will not see the browser.
browser = webdriver.Firefox()
browser.get('http://www.google.com')
print browser.title
browser.quit()
display.stop()
install PyVirtualDisplay on Ubuntu/Debian:
$ sudo apt-get install xvfb python-pip $ sudo pip install pyvirtualdisplay
9 comments:
That sounds neat! I'll definitely give it a try.
I have vague memories of seeing that Jenkins has a native xvfb plugin.
For buildbot jobs, I used to wrap my test-runner command with Debian's xvfb-run wrapper.
I find the PyVirtualDisplay solution (that I didn't know about) very interesting as well. You could take a screenshot when tests fail, to figure out why that happened.
Great post! Like Marius, I find that xvfb-run java -jar selenium-server-standalone-2.0b3.jar works really well if your stuck with Selenium RC.
Very nice, I hadn't heard of Selenium before - looks very cool, especially as it can be paired with xvfb.
Try xvnc plug-in for Jenkins
This code doesn't work for me on OS X Snow Leopard, I see the Firefox window.
Is there something other than PyVirtualDisplay and Selenium I need to install?
I agree with John this doesn't work for me on OS X 10.6. It still opens like normal.
John, Jason,
pyvirtualdisplay has some dependencies (xvfb, etc). I show how to satisfy them on Ubuntu/Debian. You are on your own for Mac.
hth,
-Corey
Just wanted to say this was quite helpful for me, was struggling to find docs on how to run it headless. Works with no probs, Debian wheezy.
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