Select an item initially to prevent GTK from doing it automatically as soon as
the listbox is clicked anywhere (even outside of the items area).
This makes all GUI tests finally pass under wxGTK.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65938 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Add a lot of tests for many wx GUI classes.
Add tests using the new wxUIActionSimulator class but disable them under OS X
as too many of them currently fail there.
Refactor the test suite to make organizing the existing tests and adding the
new ones easier.
Improve documentation using the information gathered while testing the
classes. Also update the documentation of the testing system itself.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65386 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
