The xvfb / xehypr / xehypr-glamor display-info tests each start their own X
server (Xvfb, or Xephyr nested inside Xvfb) via simple-xinit -displayfd. When
several of them start at the same instant, the servers race on the same display
numbers and the losing client ends up with a display it cannot open, failing the
lane intermittently:
_XSERVTransSocketUNIXCreateListener: /tmp/.X11-unix/X0 already in use
_XSERVTransMakeAllCOTSServerListeners: server already running
xdpyinfo: unable to open display ":1".
This reproduces on master (run 38774811861) as well as on PRs, hitting a
different display-info subtest each time, so it is a harness race and not a
regression in the code under test. Mark these tests is_parallel:false so the
display allocation cannot collide. The tests are short, so the lost parallelism
is negligible.
Test-harness only, no production code change.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Run various common checking commands like xdpyinfo, xvinfo, etc
on both Xvfb directly, as well as Xephyr inside Xvfb.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
