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  • Bug#1102595: python3-pytestqt: "Fatal Python error: Aborted" in many pa

    From Hefee@21:1/5 to lolando@debian.org on Sun Apr 27 18:45:00 2025
    Control: reassign -1 napari-console 0.1.3-1
    Control: tags + patch

    Hey,

    if you would have enabled --capture=no in the pytest call you can see the issue is not inside pytest. That's why I reassign the issue.

    "
    _tests/test_qt_console.py::test_console qt.qpa.xcb: could not connect to display
    qt.qpa.plugin: From 6.5.0, xcb-cursor0 or libxcb-cursor0 is needed to load the Qt xcb platform plugin.
    qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
    This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

    Available platform plugins are: linuxfb, minimal, offscreen, vkkhrdisplay, xcb,
    eglfs, minimalegl.
    "

    This means you need to run the tests with a GUI. The simplest way to do this is add xvfb and xauth to dependencies and just prefix xvfb-run to dh_auto_test
    and the call for the autopkgtests:
    xvfb-run $py -m pytest --verbosity=2

    Btw. please enable dh_auto_test, to see the failures directly, when you build the package.

    Unfortunately xvfb cannot handle the focus, so you either skip those tests or you need to run a minimal wm. here the docu: https://pytest-qt.readthedocs.io/en/latest/troubleshooting.html#xvfb-assertionerror-timeouterror-when-using-waituntil-waitexposed-and-ui-events

    translated into d/rules:
    override_dh_auto_test:
    export DISPLAY=:99.0
    /sbin/start-stop-daemon --start --quiet --pidfile /tmp/ custom_xvfb_99.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :99
    herbstluftwm & echo $$! > /tmp/herbstluftwm.PID
    dh_auto_test
    kill -TERM $$(cat /tmp/herbstluftwm.PID)
    /sbin/start-stop-daemon --stop --quiet --pidfile /tmp/custom_xvfb_99.pid

    Regards,

    hefee

    --



    On Thu, 10 Apr 2025 20:34:04 +0200 Roland Mas <lolando@debian.org> wrote:
    Package: python3-pytestqt
    Version: 4.4.0-1
    Severity: important

    Dear Maintainer,

    Several packages using python3-pytestqt fail with "Fatal Python error: Aborted" during their autopkgtest runs; by tweaking the pytest
    invocation, I've been able to track down the problem to this package. To reproduce, fetch, for instance, the "napari-console" source package (currently at version 0.1.3-1). Add the following two lines to the top
    of debian/rules

    export PYBUILD_TEST_CUSTOM=1
    export PYBUILD_TEST_ARGS={interpreter} -X faulthandler -m pytest -p no:faulthandler -v

    Then run the build and the autopkgtest, you should see the error happen.
    It does happen on my desktop computer with a cowbuilder chroot, and on
    the Debian CI infrastructure. From the latter (https://ci.debian.net/packages/n/napari-console/testing/amd64/59383781/):

    151s autopkgtest [08:08:15]: test command1: [-----------------------
    151s Testing with python3.13:
    152s ============================= test session starts ==============================
    152s platform linux -- Python 3.13.2, pytest-8.3.5, pluggy-1.5.0 -- /usr/bin/python3.13
    152s cachedir: .pytest_cache
    152s PyQt5 5.15.11 -- Qt runtime 5.15.15 -- Qt compiled 5.15.15
    152s rootdir: /tmp/autopkgtest-lxc.0y1wz5tp/downtmp/autopkgtest_tmp
    152s plugins: qt-4.4.0, napari-0.5.6, npe2-0.7.8, napari-plugin-engine-0.2.0, typeguard-4.4.2
    152s collecting ... collected 5 items
    152s
    152s _tests/test_qt_console.py::test_console Fatal Python error: Aborted
    152s
    152s Current thread 0x00007fa67f460100 (most recent call first):
    152s File "/usr/lib/python3/dist-packages/pytestqt/plugin.py", line 76
    in qapp
    152s File "/usr/lib/python3/dist-packages/_pytest/fixtures.py", line 898
    in call_fixture_func
    152s File "/usr/lib/python3/dist-packages/_pytest/fixtures.py", line
    1140 in pytest_fixture_setup
    152s File "/usr/lib/python3/dist-packages/pluggy/_callers.py", line 103
    in _multicall
    152s File "/usr/lib/python3/dist-packages/pluggy/_manager.py", line 120
    in _hookexec
    152s File "/usr/lib/python3/dist-packages/pluggy/_hooks.py", line 513 in __call__
    152s File "/usr/lib/python3/dist-packages/_pytest/fixtures.py", line
    1091 in execute
    152s File "/usr/lib/python3/dist-packages/_pytest/fixtures.py", line 617
    in _get_active_fixturedef
    152s File "/usr/lib/python3/dist-packages/_pytest/fixtures.py", line 532
    in getfixturevalue
    152s File "/usr/lib/python3/dist-packages/_pytest/fixtures.py", line 697
    in _fillfixtures
    152s File "/usr/lib/python3/dist-packages/_pytest/python.py", line 1630
    in setup

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