[mutter] tests/monitor-manager: Add API to emulate a hotplug event

[Jonas Ådahl <jadahl src gnome org>]

commit 2e4c516d4325e095e0bc591cada8f17d71edf1a5
Author: Jonas Ådahl <jadahl gmail com>
Date:   Wed Dec 7 17:39:53 2016 +0800

    tests/monitor-manager: Add API to emulate a hotplug event
    
    Let a test case pass a test setup, which will be used as the new state
    emulated by the test backend.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=777732

 src/tests/meta-monitor-manager-test.c |   27 +++++++++++++++++++++++++++
 src/tests/meta-monitor-manager-test.h |    3 +++
 2 files changed, 30 insertions(+), 0 deletions(-)
---
diff --git a/src/tests/meta-monitor-manager-test.c b/src/tests/meta-monitor-manager-test.c
index c5249cd..262466d 100644
--- a/src/tests/meta-monitor-manager-test.c
+++ b/src/tests/meta-monitor-manager-test.c
@@ -39,6 +39,22 @@ meta_monitor_manager_test_init_test_setup (MetaMonitorTestSetup *test_setup)
   _initial_test_setup = test_setup;
 }
 
+void
+meta_monitor_manager_test_emulate_hotplug (MetaMonitorManagerTest *manager_test,
+                                           MetaMonitorTestSetup   *test_setup)
+{
+  MetaMonitorManager *manager = META_MONITOR_MANAGER (manager_test);
+  MetaMonitorTestSetup *old_test_setup;
+
+  old_test_setup = manager_test->test_setup;
+  manager_test->test_setup = test_setup;
+
+  meta_monitor_manager_read_current_config (manager);
+  meta_monitor_manager_on_hotplug (manager);
+
+  g_free (old_test_setup);
+}
+
 static void
 meta_monitor_manager_test_read_current (MetaMonitorManager *manager)
 {
@@ -174,6 +190,14 @@ meta_monitor_manager_test_apply_configuration (MetaMonitorManager *manager,
 }
 
 static void
+meta_monitor_manager_test_dispose (GObject *object)
+{
+  MetaMonitorManagerTest *manager_test = META_MONITOR_MANAGER_TEST (object);
+
+  g_clear_pointer (&manager_test->test_setup, g_free);
+}
+
+static void
 meta_monitor_manager_test_init (MetaMonitorManagerTest *manager_test)
 {
   g_assert (_initial_test_setup);
@@ -184,8 +208,11 @@ meta_monitor_manager_test_init (MetaMonitorManagerTest *manager_test)
 static void
 meta_monitor_manager_test_class_init (MetaMonitorManagerTestClass *klass)
 {
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
   MetaMonitorManagerClass *manager_class = META_MONITOR_MANAGER_CLASS (klass);
 
+  object_class->dispose = meta_monitor_manager_test_dispose;
+
   manager_class->read_current = meta_monitor_manager_test_read_current;
   manager_class->apply_configuration = meta_monitor_manager_test_apply_configuration;
 }
diff --git a/src/tests/meta-monitor-manager-test.h b/src/tests/meta-monitor-manager-test.h
index 4ad9095..5be27cb 100644
--- a/src/tests/meta-monitor-manager-test.h
+++ b/src/tests/meta-monitor-manager-test.h
@@ -38,4 +38,7 @@ G_DECLARE_FINAL_TYPE (MetaMonitorManagerTest, meta_monitor_manager_test,
 
 void meta_monitor_manager_test_init_test_setup (MetaMonitorTestSetup *test_setup);
 
+void meta_monitor_manager_test_emulate_hotplug (MetaMonitorManagerTest *manager_test,
+                                                MetaMonitorTestSetup   *test_setup);
+
 #endif /* META_MONITOR_MANAGER_TEST_H */