Add a GAppInfoMonitor test

The test reveals that there's something fishy with this monitor.
One has to call g_app_info_get_all() for it to start working,
and then it only works once.

gio/tests/Makefile.am

@@ -20,6 +20,7 @@ AM_CFLAGS = $(GLIB_WARN_CFLAGS)
 #  Test programs buildable on all platforms
 
 test_programs = \
+	appmonitor				\
 	async-close-output-stream		\
 	async-splice-output-stream		\
 	buffered-input-stream			\

gio/tests/appmonitor.c

@@ -0,0 +1,114 @@
+#include <gio/gio.h>
+#include <gstdio.h>
+
+static gboolean
+create_app (gpointer data)
+{
+  const gchar *path = data;
+  gchar *file;
+  GError *error = NULL;
+  const gchar *contents = 
+    "[Desktop Entry]\n"
+    "Name=Application\n"
+    "Version=1.0\n"
+    "Type=Application\n"
+    "Exec=true\n";
+
+  file = g_build_filename (path, "app.desktop", NULL);
+
+  g_file_set_contents (file, contents, -1, &error);
+  g_assert_no_error (error);
+
+  g_free (file);
+
+  return G_SOURCE_REMOVE;
+}
+
+static gboolean
+delete_app (gpointer data)
+{
+  const gchar *path = data;
+  gchar *file;
+
+  file = g_build_filename (path, "app.desktop", NULL);
+
+  g_remove (file);
+
+  g_free (file);
+
+  return G_SOURCE_REMOVE;
+}
+
+static gboolean changed_fired;
+
+static void
+changed_cb (GAppInfoMonitor *monitor, GMainLoop *loop)
+{
+  changed_fired = TRUE;
+  g_main_loop_quit (loop);
+}
+
+static gboolean
+quit_loop (gpointer data)
+{
+  GMainLoop *loop = data;
+
+  g_main_loop_quit (loop);
+
+  return G_SOURCE_REMOVE;
+}
+
+static void
+test_app_monitor (void)
+{
+  gchar *path;
+  GAppInfoMonitor *monitor;
+  GMainLoop *loop;
+
+  path = g_build_filename (g_get_user_data_dir (), "applications", NULL);
+  g_mkdir (path, 0755);
+
+  /* FIXME: this shouldn't be required */
+  g_list_free_full (g_app_info_get_all (), g_object_unref);
+
+  monitor = g_app_info_monitor_get ();
+  loop = g_main_loop_new (NULL, FALSE);
+
+  g_signal_connect (monitor, "changed", G_CALLBACK (changed_cb), loop);
+
+  g_idle_add (create_app, path);
+  g_timeout_add_seconds (3, quit_loop, loop);
+
+  g_main_loop_run (loop);
+  g_assert (changed_fired);
+  changed_fired = FALSE;
+
+  /* FIXME: this shouldn't be required */
+  g_list_free_full (g_app_info_get_all (), g_object_unref);
+
+  g_idle_add (delete_app, path);
+  g_timeout_add_seconds (3, quit_loop, loop);
+
+  g_main_loop_run (loop);
+  g_assert (changed_fired);
+
+  g_main_loop_unref (loop);
+
+  g_object_unref (monitor);
+  g_free (path);
+}
+
+int
+main (int argc, char *argv[])
+{
+  gchar *path;
+
+  path = g_mkdtemp (g_strdup ("app_monitor_XXXXXX"));
+  g_setenv ("XDG_DATA_HOME", path, TRUE);
+
+  g_test_init (&argc, &argv, NULL);
+
+  g_test_add_func ("/monitor/app", test_app_monitor);
+
+  return g_test_run ();
+}