tests: Allow unicode character ä in the task description

tests/base.py

@@ -1,3 +1,5 @@
+# -*- coding: utf-8 -*-
+
 import os
 import re
 import subprocess
@@ -152,7 +154,9 @@ class IntegrationTest(object):
     # Helper function that fills in {uuid} placeholders with correct UUIDs
     def fill_uuid(self, line):
         # Tasks in testing can have only alphanumerical descriptions
-        match = re.match(r'\s*\* \[.\] (?P<desc>[a-zA-Z0-9 ]*)(?<!\s)', line)
+        match = re.match(ur'\s*\* \[.\] (?P<desc>[äa-zA-Z0-9 ]*)(?<!\s)', line,
+                flags=re.UNICODE)
+
         if not match:
             return line