I'm currently reading the book Growing Object-Oriented Software Guided by Tests which gives a decent introduction into test driven development.
One drawback is that the code developed through the book is based on Swing. For my next project I'd like to use Java FX 2 and I'm wondering if there are any GUI testing frameworks out there for it? The book introduces windowlicker, which allows testing Swing applications only.
There is a library named JemmyFX. Jemmy itself is a set of libraries and tools to test UI applications (mostly Java-based: Swing, AWT, SWT; but it's being extended to native right now). JemmyFX covers JavaFX for that matter.
JemmyFX can be downloaded as a part of the test branch of OpenJFX 2 (open-sourced part of JavaFX).
For JavaFX 8, the test branch includes support for new controls and other fixes.