[mutter/wip/carlosg/async-xwayland-startup: 2/4] tests: Set fatal log handler on clutter tests

[Carlos Garnacho <carlosg src gnome org>]

commit 03404c0793fb9a82d34b2daa7d09c7aa5f1a10ef
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed Nov 20 00:06:26 2019 +0100

    tests: Set fatal log handler on clutter tests
    
    With Xwayland initialization going async, these errors will seep
    into the parts controlled by g_test*(), resulting in the harmless
    errors about DBus names not acquired turned fatal.
    
    Set an error log handler, and specifically ignore those.
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/944

 src/tests/clutter-test-utils.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
---
diff --git a/src/tests/clutter-test-utils.c b/src/tests/clutter-test-utils.c
index c75bc4974..707e6de68 100644
--- a/src/tests/clutter-test-utils.c
+++ b/src/tests/clutter-test-utils.c
@@ -12,6 +12,22 @@ typedef struct {
 
 static ClutterTestEnvironment *test_environ = NULL;
 
+#define DBUS_NAME_WARNING "Lost or failed to acquire name"
+
+static gboolean
+log_func (const gchar    *log_domain,
+          GLogLevelFlags  log_level,
+          const gchar    *message,
+          gpointer        user_data)
+{
+  if ((log_level & G_LOG_LEVEL_WARNING) &&
+      g_strcmp0 (log_domain, "mutter") == 0 &&
+      g_str_has_prefix (message, DBUS_NAME_WARNING))
+    return FALSE;
+
+  return TRUE;
+}
+
 /*
  * clutter_test_init:
  * @argc: (inout): number of arguments in @argv
@@ -107,6 +123,8 @@ clutter_test_func_wrapper (gconstpointer data_)
 {
   const ClutterTestData *data = data_;
 
+  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);