tests: use X11 Gdk backend in dummy app

tests/dummy-app.js

@@ -6,9 +6,10 @@
 
 'use strict';
 
+imports.gi.versions.Gdk = '4.0';
 imports.gi.versions.Gtk = '4.0';
 
-const { GObject, Gio, Gtk } = imports.gi;
+const { GObject, Gio, Gdk, Gtk } = imports.gi;
 
 const System = imports.system;
 
@@ -19,6 +20,8 @@ const Application = GObject.registerClass({
 
         this.connect('startup', this.startup.bind(this));
         this.connect('activate', this.activate.bind(this));
+
+        Gdk.set_allowed_backends('x11');
     }
 
     startup() {

tests/fixtures.py

@@ -457,6 +457,19 @@
             shell_test_hook.SetPointer(pointer_x, center_y)
             shell_test_hook.SetPointer(center_x, center_y)
 
+    @pytest.fixture(scope='class')
+    def shell_env(
+        self,
+        shell_init,
+        shell_test_hook
+    ):
+        shell_environ = shell_test_hook.Eval('imports.gi.GLib.get_environ()')
+
+        return {
+            k: v for k, _, v in
+            (entry.partition('=') for entry in shell_environ)
+        }
+
     @pytest.fixture(scope='class')
     def extension_init(self, shell_init, shell_extensions_dbus_interface):
         return shell_extensions_dbus_interface.EnableExtension('ddterm@amezin.github.com')
@@ -568,7 +581,7 @@
 
                 if any(pattern in message for pattern in ignored_log_issues):
                     warnings.warn(f'Ignored known issue: {message}')
                     continue
 
                 yield message
 
@@ -592,13 +605,14 @@
         process_launcher,
         dbus_connection,
         shell_test_hook,
+        shell_env,
         hide_overview,
         pytestconfig,
     ):
         with process_launcher.spawn(
             str(pytestconfig.option.gjs),
             str(THIS_DIR / 'dummy-app.js'),
-            env=dbus_environment,
+            env=shell_env,
         ) as proc:
             try:
                 shell_test_hook.wait_property('FocusApp', 'com.github.ddterm.DummyApp')

tests/test_wm.py

@@ -206,7 +206,7 @@
             except GLib.Error as ex:
                 if ex.matches(Gio.io_error_quark(), Gio.IOErrorEnum.TIMED_OUT):
                     warnings.warn('Wait for next frame timed out. Happens on XWayland.')
 
                 else:
                     raise
 
@@ -458,7 +458,7 @@
     def max_window_rect_changes(self):
         return 1
 
     def test_show(
         self,
         unmaximized_rect,
         expected_rect,
@@ -571,7 +571,7 @@
         if not window_maximize:
             assert extension_test_hook.WindowAbove == window_above
 
     @pytest.mark.usefixtures('disable_animations')
     def test_maximize_unmaximize(
         self,
         unmaximized_rect,
@@ -626,7 +626,7 @@
         assert extension_test_hook.WindowOnAllWorkspaces in expected_on_all_workspaces
         assert shell_test_hook.FocusApp == 'com.github.amezin.ddterm'
 
     @pytest.mark.usefixtures('disable_animations')
     def test_mouse_resize(
         self,
         unmaximized_rect,
@@ -709,7 +709,7 @@
             round_to=int(monitor_scale)
         )
 
     @pytest.mark.usefixtures('disable_animations')
     def test_resize_maximize_unmaximize(
         self,
         unmaximized_rect,
@@ -931,8 +931,9 @@
         return []
 
     @pytest.fixture(scope='class')
-    def shell_init(self, disable_extension_updates):
-        pass
+    def shell_init(self, disable_extension_updates, shell_dbus_interface):
+        if shell_dbus_interface.ShellVersion == (47, 10):
+            pytest.skip('Sometimes crashes GNOME Shell on Fedora 41')
 
     def test_smoke(self, extension_init):
         pass