I am trying to set up an environment for end-to-end testing on a droplet running Ubuntu server 12.04.3 on digital ocean.
What I am trying to achieve
There is PhantomJS but with Protractor is buggy and a dead-end.
You can still use Chrome & Firefox headless through docker-selenium or, if you don't like Docker you can do it yourself with ubuntu-headless sample. Both solutions provide Chrome & Firefox by using Xvfb even though there is no real DISPLAY.
UPDATE 2 Seems to be possible to run Xvfb in OSX: http://xquartz.macosforge.org/landing/
UPDATE 1 Mac OSX selenium headless solution:
So can test selenium headless on mac. Not headless really but as another user so it doesn't interfere with your current user display. To do this you need kickstart: http://support.apple.com/en-us/HT201710 Begin using the kickstart utility
sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -restart -agent
Activate Remote Desktop Sharing, enable access privileges for all users and restart ARD Agent:
sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -activate -configure -access -on -restart -agent -privs -all
Apple Remote Desktop 3.2 or later only
Allow access for all users and give all users full access
sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -configure -allowAccessFor -allUsers -privs -all
Kickstart help command
sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -help
A lot of angular apps use Travis CI to perform Protractor based end-to-end integration tests on headless vms all the time. I do not know the details of exactly how they do it but I do know that they use a linux service called xvfb which is a headless x windows implementation. Looking at a typical Travis configuration file, it appears that all they do before firing up their web server, selenium server and kicking off Protractor is to call sh -e /etc/init.d/xvfb start
to start this service.