# HG changeset patch
# User Vladimir Iofik <v.iofik@gmail.com>
# Date 1403965357 -14400
#      Sat Jun 28 18:22:37 2014 +0400
# Branch 2.7
# Node ID ba691c65dd0c4ff689ee6eadc2a6758fb456220d
# Parent  695c45d508dfa2200888490ab4fbed2d113e2dba
test for issue 21871

diff -r 695c45d508df -r ba691c65dd0c Lib/test/test_mimetypes.py
--- a/Lib/test/test_mimetypes.py	Sat Jun 28 16:44:28 2014 +0400
+++ b/Lib/test/test_mimetypes.py	Sat Jun 28 18:22:37 2014 +0400
@@ -144,6 +144,23 @@
         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