tests/test-driver: Add way to send generic properties to client

This will make it rather convenient to send arbitrary strings, e.g. file
paths, to the client test case.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2417>

src/tests/meta-wayland-test-driver.c

@@ -42,6 +42,8 @@ struct _MetaWaylandTestDriver
   struct wl_global *test_driver;
 
   GList *resources;
+
+  GHashTable *properties;
 };
 
 G_DEFINE_TYPE (MetaWaylandTestDriver, meta_wayland_test_driver,
@@ -115,6 +117,8 @@ bind_test_driver (struct wl_client *client,
 {
   MetaWaylandTestDriver *test_driver = user_data;
   struct wl_resource *resource;
+  GHashTableIter iter;
+  gpointer key, value;
 
   resource = wl_resource_create (client, &test_driver_interface,
                                  version, id);
@@ -122,6 +126,10 @@ bind_test_driver (struct wl_client *client,
                                   test_driver, test_driver_destructor);
 
   test_driver->resources = g_list_prepend (test_driver->resources, resource);
+
+  g_hash_table_iter_init (&iter, test_driver->properties);
+  while (g_hash_table_iter_next (&iter, &key, &value))
+    test_driver_send_property (resource, key, value);
 }
 
 static void
@@ -130,6 +138,7 @@ meta_wayland_test_driver_finalize (GObject *object)
   MetaWaylandTestDriver *test_driver = META_WAYLAND_TEST_DRIVER (object);
 
   g_clear_pointer (&test_driver->test_driver, wl_global_destroy);
+  g_clear_pointer (&test_driver->properties, g_hash_table_unref);
 
   G_OBJECT_CLASS (meta_wayland_test_driver_parent_class)->finalize (object);
 }
@@ -156,6 +165,8 @@ meta_wayland_test_driver_class_init (MetaWaylandTestDriverClass *klass)
 static void
 meta_wayland_test_driver_init (MetaWaylandTestDriver *test_driver)
 {
+  test_driver->properties = g_hash_table_new_full (g_str_hash, g_str_equal,
+                                                   g_free, g_free);
 }
 
 MetaWaylandTestDriver *
@@ -187,3 +198,13 @@ meta_wayland_test_driver_emit_sync_event (MetaWaylandTestDriver *test_driver,
       test_driver_send_sync_event (resource, serial);
     }
 }
+
+void
+meta_wayland_test_driver_set_property (MetaWaylandTestDriver *test_driver,
+                                       const char            *name,
+                                       const char            *value)
+{
+  g_hash_table_replace (test_driver->properties,
+                        g_strdup (name),
+                        g_strdup (value));
+}

src/tests/meta-wayland-test-driver.h

@@ -30,4 +30,8 @@ MetaWaylandTestDriver * meta_wayland_test_driver_new (MetaWaylandCompositor *com
 void meta_wayland_test_driver_emit_sync_event (MetaWaylandTestDriver *test_driver,
                                                uint32_t               serial);
 
+void meta_wayland_test_driver_set_property (MetaWaylandTestDriver *test_driver,
+                                            const char            *name,
+                                            const char            *value);
+
 #endif /* META_WAYLAND_TEST_DRIVER_H */

src/tests/wayland-test-clients/test-driver.xml

@@ -14,5 +14,10 @@
     <event name="sync_event">
       <arg name="sequence" type="uint"/>
     </event>
+
+    <event name="property">
+      <arg name="name" type="string"/>
+      <arg name="value" type="string"/>
+    </event>
   </interface>
 </protocol>

src/tests/wayland-test-clients/wayland-test-client-utils.c

@@ -121,8 +121,22 @@ test_driver_handle_sync_event (void               *user_data,
   g_signal_emit (display, signals[SYNC_EVENT], 0, serial);
 }
 
+static void
+test_driver_handle_property (void               *user_data,
+                             struct test_driver *test_driver,
+                             const char         *name,
+                             const char         *value)
+{
+  WaylandDisplay *display = WAYLAND_DISPLAY (user_data);
+
+  g_hash_table_replace (display->properties,
+                        g_strdup (name),
+                        g_strdup (value));
+}
+
 static const struct test_driver_listener test_driver_listener = {
   test_driver_handle_sync_event,
+  test_driver_handle_property,
 };
 
 static void
@@ -198,6 +212,8 @@ wayland_display_new (WaylandDisplayCapabilities capabilities)
   display = g_object_new (wayland_display_get_type (), NULL);
 
   display->capabilities = capabilities;
+  display->properties = g_hash_table_new_full (g_str_hash, g_str_equal,
+                                               g_free, g_free);
   display->display = wl_display_connect (NULL);
   g_assert_nonnull (display->display);
 
@@ -224,6 +240,7 @@ wayland_display_finalize (GObject *object)
   WaylandDisplay *display = WAYLAND_DISPLAY (object);
 
   wl_display_disconnect (display->display);
+  g_clear_pointer (&display->properties, g_hash_table_unref);
 
   G_OBJECT_CLASS (wayland_display_parent_class)->finalize (object);
 }
@@ -347,3 +364,10 @@ draw_surface (WaylandDisplay    *display,
 
   wl_surface_attach (surface, buffer, 0, 0);
 }
+
+const char *
+lookup_property_value (WaylandDisplay *display,
+                       const char     *name)
+{
+  return g_hash_table_lookup (display->properties, name);
+}

src/tests/wayland-test-clients/wayland-test-client-utils.h

@@ -28,6 +28,8 @@ typedef struct _WaylandDisplay
   struct xdg_wm_base *xdg_wm_base;
   struct wl_shm *shm;
   struct test_driver *test_driver;
+
+  GHashTable *properties;
 } WaylandDisplay;
 
 G_DECLARE_FINAL_TYPE (WaylandDisplay, wayland_display,
@@ -44,4 +46,7 @@ void draw_surface (WaylandDisplay    *display,
                    int                height,
                    uint32_t           color);
 
+const char * lookup_property_value (WaylandDisplay *display,
+                                    const char     *name);
+
 #endif /* WAYLAND_TEST_CLIENT_UTILS_H */