[mutter] tests/conform: Use the clutter stage from mutter

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 007d27fa40ce043a10e49e4dc5dad80da1ab826e
Author: Jonas Ådahl <jadahl gmail com>
Date:   Fri May 29 19:31:22 2020 +0200

    tests/conform: Use the clutter stage from mutter
    
    The tests created their own stage, which caused various issues. Lets use
    the one from mutter instead.
    
    https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1289

 src/tests/clutter-test-utils.c                   | 26 +++++++-----------------
 src/tests/clutter/conform/actor-shader-effect.c  |  2 +-
 src/tests/clutter/conform/timeline-interpolate.c |  5 +++++
 src/tests/clutter/conform/timeline-rewind.c      |  5 +++++
 src/tests/clutter/conform/timeline.c             |  5 +++++
 5 files changed, 23 insertions(+), 20 deletions(-)
---
diff --git a/src/tests/clutter-test-utils.c b/src/tests/clutter-test-utils.c
index 59db1021a4..4f387e2bf0 100644
--- a/src/tests/clutter-test-utils.c
+++ b/src/tests/clutter-test-utils.c
@@ -5,8 +5,6 @@
 #include <clutter/clutter.h>
 
 typedef struct {
-  ClutterActor *stage;
-
   guint no_display : 1;
 } ClutterTestEnvironment;
 
@@ -98,18 +96,9 @@ out:
 ClutterActor *
 clutter_test_get_stage (void)
 {
-  g_assert (test_environ != NULL);
+  MetaBackend *backend = meta_get_backend ();
 
-  if (test_environ->stage == NULL)
-    {
-      /* create a stage, and ensure that it goes away at the end */
-      test_environ->stage = clutter_stage_new ();
-      clutter_actor_set_name (test_environ->stage, "Test Stage");
-      g_object_add_weak_pointer (G_OBJECT (test_environ->stage),
-                                 (gpointer *) &test_environ->stage);
-    }
-
-  return test_environ->stage;
+  return meta_backend_get_stage (backend);
 }
 
 typedef struct {
@@ -122,11 +111,13 @@ static void
 clutter_test_func_wrapper (gconstpointer data_)
 {
   const ClutterTestData *data = data_;
+  ClutterActor *stage;
 
   g_test_log_set_fatal_handler (log_func, NULL);
 
   /* ensure that the previous test state has been cleaned up */
-  g_assert_null (test_environ->stage);
+  stage = clutter_test_get_stage ();
+  g_assert_false (clutter_actor_is_mapped (stage));
 
   if (test_environ->no_display)
     {
@@ -151,11 +142,8 @@ out:
   if (data->test_notify != NULL)
     data->test_notify (data->test_data);
 
-  if (test_environ->stage != NULL)
-    {
-      clutter_actor_destroy (test_environ->stage);
-      g_assert_null (test_environ->stage);
-    }
+  clutter_actor_remove_all_children (stage);
+  clutter_actor_hide (stage);
 }
 
 /**
diff --git a/src/tests/clutter/conform/actor-shader-effect.c b/src/tests/clutter/conform/actor-shader-effect.c
index a2cea6d46e..f3b063c2e6 100644
--- a/src/tests/clutter/conform/actor-shader-effect.c
+++ b/src/tests/clutter/conform/actor-shader-effect.c
@@ -260,7 +260,7 @@ actor_shader_effect (void)
   if (!clutter_feature_available (CLUTTER_FEATURE_SHADERS_GLSL))
     return;
 
-  stage = clutter_stage_new ();
+  stage = clutter_test_get_stage ();
 
   rect = make_actor (foo_old_shader_effect_get_type ());
   clutter_container_add_actor (CLUTTER_CONTAINER (stage), rect);
diff --git a/src/tests/clutter/conform/timeline-interpolate.c 
b/src/tests/clutter/conform/timeline-interpolate.c
index 8d3ceeef86..aa3556b59b 100644
--- a/src/tests/clutter/conform/timeline-interpolate.c
+++ b/src/tests/clutter/conform/timeline-interpolate.c
@@ -132,8 +132,11 @@ completed_cb (ClutterTimeline *timeline,
 static void
 timeline_interpolation (void)
 {
+  ClutterActor *stage;
   TestState state;
 
+  stage = clutter_test_get_stage ();
+
   state.timeline = 
     clutter_timeline_new (TEST_TIMELINE_DURATION);
   clutter_timeline_set_repeat_count (state.timeline, -1);
@@ -151,6 +154,8 @@ timeline_interpolation (void)
   state.passed = TRUE;
   state.expected_frame = 0;
 
+  clutter_actor_show (stage);
+
   state.start_time = g_get_real_time ();
   clutter_timeline_start (state.timeline);
   
diff --git a/src/tests/clutter/conform/timeline-rewind.c b/src/tests/clutter/conform/timeline-rewind.c
index ca3d1096e9..9adc198b49 100644
--- a/src/tests/clutter/conform/timeline-rewind.c
+++ b/src/tests/clutter/conform/timeline-rewind.c
@@ -70,8 +70,11 @@ new_frame_cb (ClutterTimeline *timeline,
 static void
 timeline_rewind (void)
 {
+  ClutterActor *stage;
   TestState state;
 
+  stage = clutter_test_get_stage ();
+
   state.timeline = 
     clutter_timeline_new (TEST_TIMELINE_DURATION);
   g_signal_connect (G_OBJECT(state.timeline),
@@ -85,6 +88,8 @@ timeline_rewind (void)
                                &state);
   state.rewind_count = 0;
 
+  clutter_actor_show (stage);
+
   clutter_timeline_start (state.timeline);
   
   clutter_main();
diff --git a/src/tests/clutter/conform/timeline.c b/src/tests/clutter/conform/timeline.c
index eb9e1cd4fd..da04a98893 100644
--- a/src/tests/clutter/conform/timeline.c
+++ b/src/tests/clutter/conform/timeline.c
@@ -184,6 +184,7 @@ delay_cb (gpointer data)
 static void
 timeline_base (void)
 {
+  ClutterActor *stage;
   ClutterTimeline *timeline_1;
   TimelineData data_1;
   ClutterTimeline *timeline_2;
@@ -194,6 +195,8 @@ timeline_base (void)
   gsize n_markers;
   guint delay_tag;
 
+  stage = clutter_test_get_stage ();
+
   timeline_data_init (&data_1, 1);
   timeline_1 = clutter_timeline_new (FRAME_COUNT * 1000 / FPS);
   clutter_timeline_add_marker_at_time (timeline_1, "start-marker",
@@ -263,6 +266,8 @@ timeline_base (void)
                     "completed", G_CALLBACK (timeline_complete_cb),
                     &data_3);
 
+  clutter_actor_show (stage);
+
   if (!g_test_quiet ())
     g_print ("Without delay...\n");