jonleighton/poltergeist — Issue #32: Can't set headers
Author: sandro
Created: 2012-02-24 23:53:06+00:00
State: open

Useful for testing how the page reacts under different user-agents: like the iPhone.

Capybara-webkit has implemented it.
https://github.com/thoughtbot/capybara-webkit/blob/master/lib/capybara/driver/webkit.rb#L53-55