check changed text on py >3.5 in RegexpQuery test

See https://bugs.python.org/issue22364 for details

Author: Johnny Robeson

test/test_query.py

@@ -20,6 +20,7 @@
 from functools import partial
 from mock import patch
 import os
+import sys
 
 from test import _common
 from test._common import unittest
@@ -305,8 +306,12 @@ def test_invalid_query(self):
 
         with self.assertRaises(InvalidQueryArgumentTypeError) as raised:
             dbcore.query.RegexpQuery('year', u'199(')
-        self.assertIn(u'not a regular expression', unicode(raised.exception))
-        self.assertIn(u'unbalanced parenthesis', unicode(raised.exception))
+        exception_text = unicode(raised.exception)
+        self.assertIn(u'not a regular expression', exception_text)
+        if sys.version_info >= (3, 5):
+            self.assertIn(u'unterminated subpattern', exception_text)
+        else:
+            self.assertIn(u'unbalanced parenthesis', exception_text)
         self.assertIsInstance(raised.exception, ParsingError)