Merge "Enable unicode error message"

keystone/exception.py

@@ -56,14 +56,10 @@ class Error(StandardError):
         :raises: KeyError given insufficient kwargs
 
         """
-        return message or self.__doc__ % kwargs
-
-    def __str__(self):
-        """Cleans up line breaks and indentation from doc strings."""
-        string = super(Error, self).__str__()
-        string = re.sub('[ \n]+', ' ', string)
-        string = string.strip()
-        return string
+        if not message:
+            message = re.sub('[ \n]+', ' ', self.__doc__ % kwargs)
+            message = message.strip()
+        return message
 
 
 class ValidationError(Error):

tests/test_exception.py

@@ -136,3 +136,12 @@ class SecurityErrorTestCase(ExceptionTestCase):
         e = exception.ForbiddenAction(action=risky_info)
         self.assertValidJsonRendering(e)
         self.assertIn(risky_info, str(e))
+
+    def test_unicode_message(self):
+        message = u'Comment \xe7a va'
+        e = exception.Error(message)
+        self.assertEqual(e.message, message)
+        try:
+            unicode(e)
+        except UnicodeEncodeError:
+            self.fail("unicode error message not supported")