shutil: Introduce duck type declaration for mock

spectral54 · Sep 27, 2013 · 2bd3630 · 2bd3630
1 parent a0baa65
commit 2bd3630
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/lib-python/3.2/test/test_shutil.py b/lib-python/3.2/test/test_shutil.py
@@ -24,7 +24,8 @@
 from test.support import check_warnings, captured_stdout
 
 from typing import (
-    Any, Function, Tuple, List, Sequence, BinaryIO, overload, Traceback
+    Any, Function, Tuple, List, Sequence, BinaryIO, overload, Traceback, IO,
+    ducktype
 )
 
 import bz2
@@ -853,6 +854,7 @@ class TestCopyFile(unittest.TestCase):
 
     _delete = False
 
+    @ducktype(IO[str])
     class Faux(object):
         _entered = False
         _exited_with = None # type: tuple