[LDTP-Dev] Running LDTP tests in Xvfb

Fri Oct 26 12:44:06 PDT 2012

Nagappan,

On Wed, Oct 24, 2012 at 10:54 PM, Nagappan Alagappan <nagappan at gmail.com> wrote:
> Hi Andres,
>
> On Wed, Oct 24, 2012 at 6:31 PM, Andres Riancho <andres.riancho at gmail.com>
> wrote:
>>
>> Nagappan,
>>
>>     Thanks for the quick reply, please read inline:
>>
>> On Wed, Oct 24, 2012 at 4:04 PM, Nagappan Alagappan <nagappan at gmail.com>
>> wrote:
>> > Hi Andres,
>> >
>> > Unfortunately the underlying libraries doesn't work based on DISPLAY.
>>
>>     That sucks :(
>
>
> I mean to say a11y libraries, anyways you got what I try to convey :-)
>
>>
>>
>> > You can use either of the approach [1]
>>
>>     Executing scripts remotely is not what I need, since I want to
>> have the code under test and the LDTP test in the same workstation,
>> ideally developers should be able to run these LDTP tests in their
>> workstations before a commit.
>>
>> > or [2].
>>
>>     Hudson X11 is similar to what I've read in Mago's wiki, the
>> a11yservice.py // a11yclient.py are basically a way to send commands
>> from one context to the other. The client is run in the Hudson context
>> and in which context does the service run? xinit?
>
>
> I created this for Mago project. Hudson runs as root user (atleast in
> Ubuntu). So, I need to create 2 different scripts, a11yservice.py will run
> as regular user and a11yclient.py will run as Hudson user.

Before we continue, thanks for your detailed and quick responses! Now
to the next set of questions :)

Why are these two lines not run via a11yclient?

# Enable accessibility on the "hudson" user
gconftool-2 --set --type bool /desktop/gnome/interface/accessibility true
# Accessibility test will hang, if screensaver started during the test
gconftool-2 --type bool --set
/apps/gnome-screensaver/idle_activation_enabled false

Are they still effective if you run them with the Hudson/root user?

>>
>>     Do you see any possibility to run LDTP tests in xvfb? Is the a11y
>> service/client the way?
>
> If a11yservice.py gets started when the Xvfb session starts, then you can
> run the test as you expect, by invoking your script with a11yclient.py.

If the tests are invoked like this:
    /usr/bin/a11yclient.py 'xterm -e "cd mago;PYTHONPATH=. ./bin/mago
--noa11y -a gedit"'

Or in my case with something similar to:
    /usr/bin/a11yclient.py 'xterm -e "...;nosetests core/ui/gui/tests/"'

All I'll get from nosetests (which is the test runner I use in my
project) is the stderr and stdout, correct? In other words, if I want
to debug the unittest or do anything else it will be completely
unaccessible because of the a11yclient / xterm combination; correct?

Instead of using the .desktop shortcut, have you tried to start the
a11y server in xinitrc.hudson? Does it work?

> Hope this helps.
>
> Thanks
> Nagappan
>
>>
>>
>> Regards,
>>
>> > Thanks
>> > Nagappan
>> >
>> > [1] - http://ldtp.freedesktop.org/wiki/Executing_scripts_remotely
>> > [2] -
>> > http://bazaar.launchpad.net/~nagappan/hudson-x11-guitest/head/files
>> >
>> > On Wed, Oct 24, 2012 at 7:59 AM, Andres Riancho
>> > <andres.riancho at gmail.com>
>> > wrote:
>> >>
>> >> List,
>> >>
>> >>     Sorry if this is a FAQ but I was unable to make it work. I want to
>> >> run LDTP in Xvfb and I don't seem to find how to do it. I've read some
>> >> documents [0][1] and tested extensively but found myself in a
>> >> dead-end. This is what I'm doing:
>> >>
>> >> Console #1, start Xvfb:
>> >>     /usr/bin/Xvfb :2 -screen 0 1024x768x24 -fbdir /tmp
>> >>
>> >> Console #2, start helloworld.py application in :2:
>> >>     DISPLAY=:2 python helloworld.py
>> >>
>> >> Console #3, start VNC server on :2 to verify that helloworld.py is
>> >> running:
>> >>     x11vnc -display :2 -shared -forever
>> >>
>> >> Connect to the VNC server and find that the window is there. Without
>> >> window decoration, but it is there.
>> >>
>> >> Console #4, run sniff.py [2] on display :2:
>> >>     DISPLAY=:2 python sniff.py hello
>> >>
>> >> Expected result from the last command would be something that contains
>> >> "frmhelloworld.py"; instead I see the list of windows that are in my
>> >> working X (:0). In other words, getwindowlist [3] seems to be ignoring
>> >> the DISPLAY environment variable. I've also tested this:
>> >>
>> >>     export DISPLAY=localhost:2
>> >>     python sniff.py hello
>> >>
>> >> And I still get the same result. If, after the export I run "gedit",
>> >> the text editor will appear on my Xvfb (which I'm watching using VNC).
>> >>
>> >> So, the question would be... how do I tell LDTP to "connect" / "run"
>> >> in a different display? Is there any updated documentation on
>> >> LDTP+Xvfb?
>> >>
>> >> Thanks,
>> >>
>> >> [0]
>> >>
>> >> http://ldtp.freedesktop.org/wiki/Howto_run_ldtp_inside_Xvfb_which_runs_in_xinit_session
>> >> [1] http://mago.ubuntu.com/Documentation/RunningOnHudson
>> >> [2]
>> >>
>> >> https://sourceforge.net/apps/trac/w3af/browser/branches/threading2/core/ui/gtkUi/tests/ldtp_wrapper/sniff.py?rev=6006
>> >> [3] from ldtp import getwindowlist
>> >>
>> >> Regards,
>> >> --
>> >> Andrés Riancho
>> >> Project Leader at w3af - http://w3af.org/
>> >> Web Application Attack and Audit Framework
>> >> Twitter: @w3af
>> >> GPG: 0x93C344F3
>> >> _______________________________________________
>> >> LDTP-dev mailing list
>> >> LDTP-dev at lists.freedesktop.org
>> >> http://lists.freedesktop.org/mailman/listinfo/ldtp-dev
>> >
>> >
>> >
>> >
>> > --
>> > Cross platform GUI testing
>> > Linux Desktop (GUI Application) Testing Project -
>> > http://ldtp.freedesktop.org
>> > Cobra - Windows GUI Automation tool - https://github.com/ldtp/cobra
>> > ATOMac - Mac GUI Automation tool - https://github.com/pyatom/pyatom
>> > http://nagappanal.blogspot.com
>> >
>>
>>
>>
>> --
>> Andrés Riancho
>> Project Leader at w3af - http://w3af.org/
>> Web Application Attack and Audit Framework
>> Twitter: @w3af
>> GPG: 0x93C344F3
>
>
>
>
> --
> Cross platform GUI testing
> Linux Desktop (GUI Application) Testing Project -
> http://ldtp.freedesktop.org
> Cobra - Windows GUI Automation tool - https://github.com/ldtp/cobra
> ATOMac - Mac GUI Automation tool - https://github.com/pyatom/pyatom
> http://nagappanal.blogspot.com
>

-- 
Andrés Riancho
Project Leader at w3af - http://w3af.org/
Web Application Attack and Audit Framework
Twitter: @w3af
GPG: 0x93C344F3