From bb4d3527cf8a17d6b8e57c608033cf065ce67078 Mon Sep 17 00:00:00 2001
From: Benjamin Peterson <benjamin@python.org>
Date: Sun, 29 Jun 2014 13:02:12 -0700
Subject: add a test for access errors from OpenKey (closes #21871)

Patch from Vladimir Iofik.
---
 Lib/test/test_mimetypes.py | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/Lib/test/test_mimetypes.py b/Lib/test/test_mimetypes.py
index 8de4258..e9a7216 100644
--- a/Lib/test/test_mimetypes.py
+++ b/Lib/test/test_mimetypes.py
@@ -144,6 +144,23 @@ class Win32MimeTypesTestCase(unittest.TestCase):
         finally:
             mimetypes._winreg = _winreg
 
+    def test_registry_read_error(self):
+        import _winreg
+
+        class MockWinreg(object):
+            def OpenKey(self, key, name):
+                if key != _winreg.HKEY_CLASSES_ROOT:
+                    raise WindowsError(5, "Access is denied")
+                return _winreg.OpenKey(key, name)
+            def __getattr__(self, name):
+                return getattr(_winreg, name)
+
+        mimetypes._winreg = MockWinreg()
+        try:
+            mimetypes.init()
+        finally:
+            mimetypes._winreg = _winreg
+
 def test_main():
     test_support.run_unittest(MimeTypesTestCase,
         Win32MimeTypesTestCase
-- 
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