Make the headless input tests work

These needed some updates and workarounds.

They are now part of the testsuite and can
be run like this:

    meson test -Cbuild --suite headless

testsuite/headless/headless-input-tests.py

@@ -1,4 +1,5 @@
 import sys
+import os
 import subprocess
 import gi
 
@@ -191,11 +192,9 @@ def launch_observer():
         print('launch observer')
 
     if display == None:
-        Gdk.set_allowed_backends('wayland')
-        display = Gdk.Display.open('gtk-test')
+        display = Gdk.Display.open(os.getenv('WAYLAND_DISPLAY'))
 
     window = Gtk.Window.new()
-    window.set_display(display)
 
     controller = Gtk.EventControllerKey.new()
     controller.set_propagation_phase(Gtk.PropagationPhase.CAPTURE)
@@ -341,12 +340,10 @@ def launch_drag_source(value):
         print('launch drag source')
 
     if display == None:
-        Gdk.set_allowed_backends('wayland')
-        display = Gdk.Display.open('gtk-test')
+        display = Gdk.Display.open(os.getenv('WAYLAND_DISPLAY'))
 
     ds_window = Gtk.Window.new()
     ds_window.set_title('Drag Source')
-    ds_window.set_display(display)
 
     ds = Gtk.DragSource.new()
     ds.set_content(Gdk.ContentProvider.new_for_value(value))
@@ -393,14 +390,17 @@ def do_drop(controller, value, x, y):
     loop.quit()
 
 def launch_drop_target():
+    global display
     global dt_window
 
     if verbose:
         print('launch drop target')
 
+    if display == None:
+        display = Gdk.Display.open(os.getenv('WAYLAND_DISPLAY'))
+
     dt_window = Gtk.Window.new()
     dt_window.set_title('Drop Target')
-    dt_window.set_display(display)
 
     controller = Gtk.DropTarget.new(GObject.TYPE_STRING, Gdk.DragAction.COPY)
     dt_window.add_controller(controller)
@@ -448,6 +448,8 @@ def dnd_tests():
         pointer_move(100, 100)
         button_press(1)
         expect_button_press(button=1, x=100, y=100, timeout=300)
+        # need to wait out the MIN_TIME_TO_DND
+        wait(150)
 
         pointer_move(120, 150)
         expect_drag(timeout=1000)
@@ -493,6 +495,11 @@ def mutter_appeared(name):
     stream_path = screen_cast_session.RecordMonitor('Meta-0', {})
     session.Start()
 
+    # work around lack of initial devices
+    key_press(Gdk.KEY_Control_L)
+    key_release(Gdk.KEY_Control_L)
+    pointer_move(-100, -100)
+
     basic_keyboard_tests()
     basic_pointer_tests()
     dnd_tests()

testsuite/headless/headless-monitor-tests.py

@@ -1,4 +1,5 @@
 import sys
+import os
 import subprocess
 import gi
 
@@ -14,6 +15,7 @@ monitors = {}
 waiting = False
 done = False
 monitor_model = None
+display = None
 
 def terminate():
     for key in monitors:
@@ -99,13 +101,14 @@ def monitors_changed(monitors, position, removed, added):
 
 def launch_observer():
     global monitor_model
+    global display
+
+    if display == None:
+        display = Gdk.Display.open(os.getenv('WAYLAND_DISPLAY'))
 
     if verbose:
         print('launch observer')
 
-    Gdk.set_allowed_backends('wayland')
-    display = Gdk.Display.open('gtk-test')
-
     monitor_model = display.get_monitors()
     assert monitor_model.get_n_items() == 0, "Unexpected initial monitors"
     monitor_model.connect('items-changed', monitors_changed)

testsuite/headless/meson.build

@@ -0,0 +1,19 @@
+env = environment()
+env.prepend('GI_TYPELIB_PATH',
+  project_build_root / 'gtk',
+  gi_dep.get_variable(pkgconfig: 'typelibdir'),
+)
+env.prepend('LD_PRELOAD', project_build_root / 'gtk' / 'libgtk-4.so')
+env.prepend('MESON_CURRENT_SOURCE_DIR', meson.current_source_dir())
+
+test('monitor',
+  find_program('run-headless-monitor-tests.sh', dirs: meson.current_source_dir()),
+  suite: ['headless'],
+  env: env,
+)
+
+test('input',
+  find_program('run-headless-input-tests.sh', dirs: meson.current_source_dir()),
+  suite: ['headless'],
+  env: env,
+)

testsuite/headless/run-headless-input-tests.sh

@@ -1,24 +1,22 @@
 #! /bin/sh
 
-builddir=$(pwd)/build
+srcdir=${MESON_CURRENT_SOURCE_DIR:-./testsuite/headless}
 
 dbus-run-session sh <<EOF
 
 #echo DBUS_SESSION_BUS_ADDRESS=\$DBUS_SESSION_BUS_ADDRESS
 #echo WAYLAND_DISPLAY=gtk-test
 
-mutter --headless --virtual-monitor 1024x768 --no-x11 --wayland-display gtk-test >&mutter.log &
+export GTK_A11Y=none
+export GIO_USE_VFS=local
+
+mutter --headless --virtual-monitor 1024x768 --no-x11 --wayland-display gtk-test2 >&mutter2.log &
 pid=\$!
 
-export WAYLAND_DISPLAY=gtk-test
+export WAYLAND_DISPLAY=gtk-test2
 export GDK_BACKEND=wayland
-export GTK_A11Y=none
-#export WAYLAND_DEBUG=1
 
-export GI_TYPELIB_PATH=$builddir/gtk:/usr/lib64/girepository-1.0
-export LD_PRELOAD=$builddir/gtk/libgtk-4.so
-
-python tests/headless-input-tests.py
+python ${srcdir}/headless-input-tests.py
 status=\$?
 
 kill \$pid

testsuite/headless/run-headless-monitor-tests.sh

@@ -1,22 +1,22 @@
 #! /bin/sh
 
-builddir=$(pwd)/build
+srcdir=${MESON_CURRENT_SOURCE_DIR:-./testsuite/headless}
 
 dbus-run-session sh <<EOF
 
 # echo DBUS_SESSION_BUS_ADDRESS=\$DBUS_SESSION_BUS_ADDRESS
 # echo WAYLAND_DISPLAY=gtk-test
 
+export GTK_A11Y=none
+export GIO_USE_VFS=local
+
 mutter --headless --no-x11 --wayland-display gtk-test >&mutter.log &
 pid=\$!
 
 export WAYLAND_DISPLAY=gtk-test
 export GDK_BACKEND=wayland
 
-export GI_TYPELIB_PATH=$builddir/gtk:/usr/lib64/girepository-1.0
-export LD_PRELOAD=$builddir/gtk/libgtk-4.so
-
-python tests/headless-monitor-tests.py
+python ${srcdir}/headless-monitor-tests.py
 status=\$?
 
 kill \$pid

testsuite/meson.build

@@ -70,7 +70,9 @@ subdir('css')
 subdir('a11y')
 subdir('tools')
 subdir('reftests')
-
 if build_gir
   subdir('introspection')
 endif
+if wayland_enabled
+  subdir('headless')
+endif