[mutter] tests/clutter: Add color state conform tests

[Marge Bot <marge-bot src gnome org>]

commit 3b062842edc317cea753301c50ea7b5814f26037
Author: Naveen Kumar <naveen1 kumar intel com>
Date:   Fri May 27 15:45:55 2022 +0000

    tests/clutter: Add color state conform tests
    
    * creating an actor will result in it being assigned a color state
     with the color space sRGB
    * creating an actor with a color state passed will result in that
     color state being returned
    * changing an actor's color state makes that happen
    * changing an actor's color state to NULL ends up with it being
     changed back to a color state with the sRGB color space
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2443>

 src/tests/clutter/conform/actor-color-state.c | 129 ++++++++++++++++++++++++++
 src/tests/clutter/conform/meson.build         |   1 +
 2 files changed, 130 insertions(+)
---
diff --git a/src/tests/clutter/conform/actor-color-state.c b/src/tests/clutter/conform/actor-color-state.c
new file mode 100644
index 0000000000..bdef7b8a49
--- /dev/null
+++ b/src/tests/clutter/conform/actor-color-state.c
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2022  Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author:
+ *   Naveen Kumar <naveen1 kumar intel com>
+ */
+
+#define CLUTTER_DISABLE_DEPRECATION_WARNINGS
+#include <clutter/clutter.h>
+
+#include "tests/clutter-test-utils.h"
+
+/* creating an actor will result in it being assigned a color state with the
+ * color space sRGB */
+static void
+actor_color_state_default (void)
+{
+  ClutterActor *actor;
+  ClutterColorState *color_state;
+  ClutterColorspace colorspace;
+
+  actor = clutter_actor_new ();
+
+  color_state = clutter_actor_get_color_state (actor);
+  colorspace = clutter_color_state_get_colorspace (color_state);
+
+  g_assert_cmpuint (colorspace, ==, CLUTTER_COLORSPACE_SRGB);
+
+  clutter_actor_destroy (actor);
+}
+
+/* creating an actor with a color state passed will result in that color
+ * state being returned */
+static void
+actor_color_state_passed (void)
+{
+  ClutterActor *actor;
+  ClutterColorState *color_state;
+  ClutterColorspace colorspace;
+
+  color_state = clutter_color_state_new (CLUTTER_COLORSPACE_BT2020);
+
+  if (!color_state)
+    g_critical ("Failed to create color state with provided colorspace.");
+
+  actor = g_object_new (CLUTTER_TYPE_ACTOR,
+                        "width", 50.0,
+                        "height", 50.0,
+                        "x", 0.0, "y", 0.0,
+                        "color_state", color_state,
+                        NULL);
+
+  if (!actor)
+    g_critical ("Failed to create actor with provided color state.");
+
+  color_state = clutter_actor_get_color_state (actor);
+  colorspace = clutter_color_state_get_colorspace (color_state);
+
+  g_assert_cmpuint (colorspace, ==, CLUTTER_COLORSPACE_BT2020);
+
+  clutter_actor_destroy (actor);
+}
+
+/* changing an actor's color state makes that happen */
+static void
+actor_change_color_state (void)
+{
+  ClutterActor *actor;
+  ClutterColorState *color_state;
+  ClutterColorspace colorspace;
+
+  actor = clutter_actor_new ();
+
+  color_state = clutter_color_state_new (CLUTTER_COLORSPACE_BT2020);
+
+  if (!color_state)
+    g_critical ("Failed to create color state with provided colorspace.");
+
+  clutter_actor_set_color_state (actor, color_state);
+
+  color_state = clutter_actor_get_color_state (actor);
+  colorspace = clutter_color_state_get_colorspace (color_state);
+
+  g_assert_cmpuint (colorspace, ==, CLUTTER_COLORSPACE_BT2020);
+
+  clutter_actor_destroy (actor);
+}
+
+/* changing an actor's color state to NULL ends up with it being changed back
+ * to a color state with the sRGB color space */
+static void
+actor_change_color_state_to_null (void)
+{
+  ClutterActor *actor;
+  ClutterColorState *color_state;
+  ClutterColorspace colorspace;
+
+  actor = clutter_actor_new ();
+
+  clutter_actor_set_color_state (actor, NULL);
+
+  color_state = clutter_actor_get_color_state (actor);
+  colorspace = clutter_color_state_get_colorspace (color_state);
+
+  g_assert_cmpuint (colorspace, ==, CLUTTER_COLORSPACE_SRGB);
+
+  clutter_actor_destroy (actor);
+}
+
+CLUTTER_TEST_SUITE (
+  CLUTTER_TEST_UNIT ("/actor/color-state-default", actor_color_state_default)
+  CLUTTER_TEST_UNIT ("/actor/color-state-passed", actor_color_state_passed)
+  CLUTTER_TEST_UNIT ("/actor/change-color-state", actor_change_color_state)
+  CLUTTER_TEST_UNIT ("/actor/change-color-state-to-null",
+                     actor_change_color_state_to_null)
+)
diff --git a/src/tests/clutter/conform/meson.build b/src/tests/clutter/conform/meson.build
index 83aa7a054f..8f42763824 100644
--- a/src/tests/clutter/conform/meson.build
+++ b/src/tests/clutter/conform/meson.build
@@ -11,6 +11,7 @@ clutter_tests_conform_link_args = [
 
 clutter_conform_tests_actor_tests = [
   'actor-clone',
+  'actor-color-state',
   'actor-destroy',
   'actor-event-hold',
   'actor-graph',