It looks like Selenium [0] can control both native browsers and headless PhantomJS [1] for test automation [2]. Native browsers pass fingerprint tests and allow visual observation of the running test, but are slower due to display rendering.

[0] http://www.chrisle.me/2013/08/5-reasons-i-chose-selenium-ove...

[1] http://www.assertselenium.com/headless-testing/getting-start...

[2] http://blogs.adobe.com/security/2014/07/overview-of-behavior...