tests: Add .desktop file for non-existent binary ...

... to test that it is filtered out correctly by
g_desktop_app_info_load_from_keyfile() (but not
g_desktop_app_info_search()).

https://bugzilla.gnome.org/show_bug.cgi?id=795488

gio/tests/desktop-app-info.c

@@ -672,6 +672,12 @@ test_search (void)
    */
   assert_search ("sh", "gnome-terminal.desktop\n", TRUE, FALSE, NULL, NULL);
 
+  /* "frobnicator.desktop" is ignored by get_all() because the binary is
+   * missing, but search should still find it (to avoid either stale results
+   * from the cache or expensive stat() calls for each potential result)
+   */
+  assert_search ("frobni", "frobnicator.desktop\n", TRUE, FALSE, NULL, NULL);
+
   /* Obvious multi-word search */
   assert_search ("gno hel", "yelp.desktop\n", TRUE, TRUE, NULL, NULL);