Is there a keyboard shortcut in Xcode 6 to run a single current test function under cursor?
Run the current test:
Control + Option + Command + U
Re-Run the last test:
Control + Option + Command + G
control-option-command G will let you rerun your last test. So if you run a single test the first time and then keep running it (a common workflow for TDD), that might save you some time ;)
The Xcode key binding preferences for these commands are:
Perform Action - Test
Perform Action - Test Again
Use those titles to find the commands for re-binding.