The new gui tests passed on Travis (linux), which I strongly suspect does not run gui tests. The generate key test failed on Appveyor (Windows), which means is does run gui tests. It also failed on my machine: generate key release did not work. The generate click test does pass on both Appveyor and my machine, which is progress.
Adding config.fontlist.focus_force() before the key event worked. Louie, I will push that along with other edits tomorrow. I will try exposing the window just for the tests.