tests: Add test running basic perf test

This test runs all of GNOME Shell using the headless backend inside a
mocked D-Bus environment. The basic test tests, well, basic things, like
the panel menu, the overview, showing the app grid view, as well as
going back to the session view.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1349>

tests/meson.build

@@ -38,3 +38,29 @@ foreach test : tests
     env: testenv,
     workdir: meson.current_source_dir())
 endforeach
+
+perf_tests = [
+  'basic',
+]
+
+gvc_typelib_path = fs.parent(libgvc.get_variable('libgvc_gir')[1].full_path())
+libgvc_path = fs.parent(libgvc.get_variable('libgvc').full_path())
+
+perf_testenv = testenv
+perf_testenv.set('G_DEBUG', 'fatal-criticals')
+perf_testenv.set('G_MESSAGES_DEBUG', 'GNOME Shell')
+perf_testenv.set('GNOME_SHELL_DATADIR', data_builddir)
+perf_testenv.set('GNOME_SHELL_BUILDDIR', src_builddir)
+perf_testenv.append('GI_TYPELIB_PATH', gvc_typelib_path, separator: ':')
+perf_testenv.append('LD_LIBRARY_PATH', libgvc_path, separator: ':')
+
+foreach perf_test : perf_tests
+  test('perf-' + perf_test, dbus_runner,
+    args: [
+      perf_tool,
+      '--headless',
+      '--perf=@0@'.format(perf_test),
+    ],
+    env: perf_testenv,
+  )
+endforeach