Initial checkin of Pika from heckimp

build/meson/run_test_env.sh

@@ -0,0 +1,43 @@
+#!/bin/sh
+#
+# Wrapper script to use for the Meson test setup.
+#
+# Define the "UI_TEST" for all tests that should run headless
+
+if [ -n "${UI_TEST}" ]; then
+  # Use Xvfb to simulate a graphical session; note that this needs
+  # a new enough version which has the -d option.
+  #
+  # Also use dbus-run-session to make sure parallel tests aren't failing
+  # as they simultaneously try to own the "technology.heckin.PIKA.UI" D-Bus name
+
+  # This is weird but basically on a Debian testing/bookworm, apparently
+  # the --auto-display (neither the short version -d) option does not
+  # exist and ends up in error:
+  # > xvfb-run: unrecognized option '--auto-display'
+  # There only --auto-servernum works fine.
+  #
+  # On a recent Fedora (33 in my case), the later exists but a few of
+  # the tests fail with some weirder:
+  # > /usr/bin/xvfb-run: line 186: kill: (53539) - No such process
+  # There using --auto-display instead (supposed to deprecate
+  # --auto-servernum) works instead, but only in its short form (-d).
+  # The long form --auto-display also results in the "unrecognized
+  # option" error even though the help output lists it.
+  # Yep it's a huge mess.
+  xvfb-run 2>&1|grep --quiet auto-display
+  HAS_AUTO_DISPLAY="$?"
+  if [ "$HAS_AUTO_DISPLAY" -eq 0 ]; then
+    OPT="-d"
+  else
+    OPT="--auto-servernum"
+  fi
+  xvfb-run $OPT --server-args="-screen 0 1280x1024x24" \
+    dbus-run-session -- "$@"
+
+else
+  # Run the executable directly,
+  # i.e. no need to run Xvfb (which will have a timeout)
+
+  "$@"
+fi