From 9581e9e31bdec1b1f816a16ef23398baedf2183b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20=C3=85dahl?= <jadahl@gmail.com>
Date: Wed, 12 Aug 2020 19:32:54 +0200
Subject: [PATCH] tests/stage-view: Test timeline updates clock when parent
 moves

Test that if a timeline got its frame clock from a parent of the
associated actor, if that actor moves across the stage so that the stage
views changes and thus the would be picked frame clock too, this is
noticed by the timeline so that it also changes to the correct frame
clock.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1404
---
 src/tests/stage-view-tests.c | 77 ++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)

diff --git a/src/tests/stage-view-tests.c b/src/tests/stage-view-tests.c
index cff212d4f..163d677ac 100644
--- a/src/tests/stage-view-tests.c
+++ b/src/tests/stage-view-tests.c
@@ -898,6 +898,81 @@ meta_test_actor_stage_views_parent_views_rebuilt (void)
   clutter_actor_destroy (container);
 }
 
+static void
+meta_test_actor_stage_views_parent_views_changed (void)
+{
+  MetaBackend *backend = meta_get_backend ();
+  MetaMonitorManager *monitor_manager =
+    meta_backend_get_monitor_manager (backend);
+  MetaMonitorManagerTest *monitor_manager_test =
+    META_MONITOR_MANAGER_TEST (monitor_manager);
+  MonitorTestCaseSetup frame_clock_test_setup;
+  MetaMonitorTestSetup *test_setup;
+  ClutterActor *stage, *container, *test_actor;
+  GList *stage_views;
+  ClutterTimeline *timeline;
+  ClutterFrameClock *timeline_frame_clock;
+  ClutterFrameClock *first_view_frame_clock;
+  ClutterFrameClock *second_view_frame_clock;
+
+  stage = meta_backend_get_stage (backend);
+
+  frame_clock_test_setup = initial_test_case_setup;
+  test_setup = create_monitor_test_setup (&frame_clock_test_setup,
+                                          MONITOR_TEST_FLAG_NO_STORED);
+  meta_monitor_manager_test_emulate_hotplug (monitor_manager_test, test_setup);
+
+  stage_views = clutter_stage_peek_stage_views (CLUTTER_STAGE (stage));
+  g_assert_cmpint (g_list_length (stage_views), ==, 2);
+
+  container = clutter_actor_new ();
+  clutter_actor_set_size (container, 100, 100);
+  clutter_actor_set_position (container, 0, 0);
+  clutter_actor_add_child (stage, container);
+
+  test_actor = clutter_actor_new ();
+  clutter_actor_set_size (test_actor, 0, 0);
+  clutter_actor_add_child (container, test_actor);
+
+  stage_views = clutter_stage_peek_stage_views (CLUTTER_STAGE (stage));
+  g_assert_cmpint (g_list_length (stage_views), ==, 2);
+  clutter_actor_show (stage);
+  wait_for_paint (stage);
+  stage_views = clutter_stage_peek_stage_views (CLUTTER_STAGE (stage));
+  g_assert_cmpint (g_list_length (stage_views), ==, 2);
+
+  is_on_stage_views (test_actor, 0);
+  is_on_stage_views (container, 1, stage_views->data);
+  is_on_stage_views (stage, 2,
+                     stage_views->data,
+                     stage_views->next->data);
+
+  timeline = clutter_timeline_new_for_actor (test_actor, 100);
+  clutter_timeline_start (timeline);
+
+  first_view_frame_clock =
+    clutter_stage_view_get_frame_clock (stage_views->data);
+  second_view_frame_clock =
+    clutter_stage_view_get_frame_clock (stage_views->next->data);
+  g_assert_nonnull (first_view_frame_clock);
+  g_assert_nonnull (second_view_frame_clock);
+
+  timeline_frame_clock = clutter_timeline_get_frame_clock (timeline);
+
+  g_assert_nonnull (timeline_frame_clock);
+  g_assert (timeline_frame_clock == first_view_frame_clock);
+
+  clutter_actor_set_x (container, 1200);
+  wait_for_paint (stage);
+
+  timeline_frame_clock = clutter_timeline_get_frame_clock (timeline);
+  g_assert_nonnull (timeline_frame_clock);
+  g_assert (timeline_frame_clock == second_view_frame_clock);
+
+  clutter_actor_destroy (test_actor);
+  clutter_actor_destroy (container);
+}
+
 static void
 init_tests (int argc, char **argv)
 {
@@ -921,6 +996,8 @@ init_tests (int argc, char **argv)
                    meta_test_actor_stage_views_timeline);
   g_test_add_func ("/stage-views/actor-stage-views-parent-rebuilt",
                    meta_test_actor_stage_views_parent_views_rebuilt);
+  g_test_add_func ("/stage-views/actor-stage-views-parent-changed",
+                   meta_test_actor_stage_views_parent_views_changed);
 }
 
 int