InvocationError without further information¶
It might happen that your
tox run finishes abruptly without any useful information, e.g.:
ERROR: InvocationError: '/path/to/project/.tox/py36/bin/python setup.py test --addopts --doctest-modules' ___ summary _____ ERROR: py36: commands failed
pytest-qt needs a
DISPLAY to run, otherwise
abort() and the process crashes immediately.
One solution is to use the pytest-xvfb plugin which takes care of the grifty details automatically, starting up a virtual framebuffer service, initializing variables, etc. This is the recommended solution if you are running in CI servers without a GUI, for example in Travis or CircleCI.
tox users may edit
tox.ini to allow the relevant variables to be passed to the underlying
[testenv] passenv = DISPLAY XAUTHORITY
Note that this solution will only work in boxes with a GUI.
More details can be found in issue #170.
TimeoutError when using
waitExposed and UI events.¶
xvfb or equivalent make sure to have a window manager running otherwise UI events will not work properly.
If you are running your code on Travis-CI make sure that your
.travis.yml has the following content:
sudo: required before_install: - sudo apt-get update - sudo apt-get install -y xvfb herbstluftwm install: - "export DISPLAY=:99.0" - "/sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_99.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :99 -screen 0 1920x1200x24 -ac +extension GLX +render -noreset" - sleep 3 before_script: - "herbstluftwm &" - sleep 1
More details can be found in issue #206.