in fact, nothing runs without the cpu resource

Author: smontanaro

Lib/test/test_xpickle.py

@@ -18,8 +18,7 @@
     has_c_implementation = False
 
 support.requires('xpickle')
-if not support.is_resource_enabled('cpu'):
-    support.print_warning("without 'cpu' resource, many tests won't be run")
+support.requires('cpu')
 
 is_windows = sys.platform.startswith('win')