ci: Enable native backend and screen cast tests

With the surfaceless mode in the headless backend, it's now possible to
initiate the headless mode without any mode setting devices, or render
nodes, without any special CI runner privileges.

The native backend tests include screen cast tests, so make them
possible to run by starting pipewire. Testing shows that enabling audio
support (pulseaudio & jack compat layers) makes the tests dead lock and
eventually timeout, so disable those features for now.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1698>

.gitlab-ci.yml

@@ -191,7 +191,7 @@ build-fedora-container@aarch64:
     - .fdo.distribution-image@fedora
   stage: build
   script:
-    - meson . build -Dbuildtype=debugoptimized -Db_coverage=true -Degl_device=true -Dwayland_eglstream=true -Dnative_tests=false --werror --prefix /usr
+    - meson . build -Dbuildtype=debugoptimized -Db_coverage=true -Degl_device=true -Dwayland_eglstream=true --werror --prefix /usr
     - ninja -C build
     - ninja -C build install
   artifacts:
@@ -221,7 +221,7 @@ build-without-opengl-and-glx@x86_64:
   needs:
     - build-fedora-container@x86_64
   script:
-    - meson . build -Dbuildtype=debugoptimized -Dopengl=false -Dglx=false -Degl_device=true -Dwayland_eglstream=true -Dnative_tests=false --werror --prefix /usr
+    - meson . build -Dbuildtype=debugoptimized -Dopengl=false -Dglx=false -Degl_device=true -Dwayland_eglstream=true --werror --prefix /usr
     - ninja -C build
     - ninja -C build install
   artifacts:

.gitlab-ci/run-tests.sh

@@ -5,6 +5,13 @@ set -e
 dconf update
 glib-compile-schemas $GSETTINGS_SCHEMA_DIR
 
+# Disable audio support to not dead lock screen cast tests
+rm -f /etc/pipewire/media-session.d/with-jack
+rm -f /etc/pipewire/media-session.d/with-pulseaudio
+pipewire &
+
+sleep 2
+
 export MUTTER_DEBUG_DUMMY_MODE_SPECS="800x600@10.0"
 
 xvfb-run -s '+iglx -noreset' \