Fix PublicAPITests.test_module_all_attribute

Author: jb2170

Lib/test/test_shutil.py

@@ -3458,7 +3458,7 @@ def test_module_all_attribute(self):
                       'unregister_archive_format', 'get_unpack_formats',
                       'register_unpack_format', 'unregister_unpack_format',
                       'unpack_archive', 'ignore_patterns', 'chown', 'which',
-                      'get_terminal_size', 'SameFileError']
+                      'get_terminal_size', 'SameFileError', 'umask']
         if hasattr(os, 'statvfs') or os.name == 'nt':
             target_api.append('disk_usage')
         self.assertEqual(set(shutil.__all__), set(target_api))