Re: [Python-Dev] Testing tkinter on Linux

On Thu, 27 Aug 2015 14:24:36 -0400, Terry Reedy wrote:

On 8/27/2015 12:35 AM, Chris Angelico wrote:

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On Thu, Aug 27, 2015 at 2:20 PM, Terry Reedy wrote:

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None of the linux buildbots run with X enabled. Consequently none of the tkinter (or tkinter user) gui tests are run on Linux. It was thus pointed out to me, during discussion of using ttk widgets in Idle, that we do not really know if ttk works on the variety of Linux systems (beyond the one Serhiy uses) and that I should look into this.

If it helps, my buildbot has full GUI services, so if there's a simple way to tell it to run the GUI tests every time, they should pass.

Somewhere your buildbot has a shell script to run that ends with a command to start the tests. The commands are echoed to the buildbot output. Here are two that I found.

No, the master controls this.

./python ./Tools/scripts/run_tests.py -j 1 -u all -W --timeout=3600 ... PCbuild\..\lib\test\regrtest.py" -uall -rwW -n --timeout 3600 (and python -m test ... should work)

If the command has -ugui (included in -uall) *and* a graphics system can be initiated (X on Linux), then the gui resource is marked present and gui tests will run.

I believe gui depends on the existence of the DISPLAY environment variable on unix/linux (that is, TK will fail to start if DISPLAY is not set, so _is_gui_available will return False). You should be able to confirm this by looking at the text of the skip message in the buildbot output. It is possible to create a "virtual" X on an otherwise headless linux system, but I've never tried to do it myself. If someone comes up with a recipe we could add it to the devguide chapter on running a buildbot. --David