[mutter] test-runner: Add 'sleep' command

[Jonas Ådahl <jadahl src gnome org>]

commit d08763c18cb25fe250b27bf296e1607e63e86400
Author: Marco Trevisan (Treviño) <mail 3v1n0 net>
Date:   Tue Jun 18 19:33:10 2019 +0200

    test-runner: Add 'sleep' command
    
    This allows to sleep for a given timeout in milliseconds.
    
    Rename test_case_before_redraw to test_case_loop_quit since it's a generic
    function and use it for the timeout too.
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/307

 src/tests/test-runner.c | 29 +++++++++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)
---
diff --git a/src/tests/test-runner.c b/src/tests/test-runner.c
index 2287769c7..cc854af4d 100644
--- a/src/tests/test-runner.c
+++ b/src/tests/test-runner.c
@@ -77,7 +77,7 @@ test_case_new (void)
 }
 
 static gboolean
-test_case_before_redraw (gpointer data)
+test_case_loop_quit (gpointer data)
 {
   TestCase *test = data;
 
@@ -108,7 +108,7 @@ test_case_wait (TestCase *test,
    * waiting until after *all* frame processing.
    */
   meta_later_add (META_LATER_BEFORE_REDRAW,
-                  test_case_before_redraw,
+                  test_case_loop_quit,
                   test,
                   NULL);
   g_main_loop_run (test->loop);
@@ -121,6 +121,17 @@ test_case_wait (TestCase *test,
   return TRUE;
 }
 
+static gboolean
+test_case_sleep (TestCase  *test,
+                 guint32    interval,
+                 GError   **error)
+{
+  g_timeout_add_full (G_PRIORITY_LOW, interval, test_case_loop_quit, test, NULL);
+  g_main_loop_run (test->loop);
+
+  return TRUE;
+}
+
 #define BAD_COMMAND(...)                                                \
   G_STMT_START {                                                        \
       g_set_error (error,                                               \
@@ -549,6 +560,20 @@ test_case_do (TestCase *test,
       if (!test_case_wait (test, error))
         return FALSE;
     }
+  else if (strcmp (argv[0], "sleep") == 0)
+    {
+      guint64 interval;
+
+      if (argc != 2)
+        BAD_COMMAND("usage: %s <milliseconds>", argv[0]);
+
+      if (!g_ascii_string_to_unsigned (argv[1], 10, 0, G_MAXUINT32,
+                                       &interval, error))
+        return FALSE;
+
+      if (!test_case_sleep (test, (guint32) interval, error))
+        return FALSE;
+    }
   else if (strcmp (argv[0], "assert_stacking") == 0)
     {
       if (!test_case_assert_stacking (test, argv + 1, argc - 1, error))