Prevent exception when logging repr(conn).

git-svn-id: https://svn.erp5.org/repos/neo/trunk@2110 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/tests/client/testClientApp.py

@@ -443,6 +443,7 @@ class ClientApplicationTests(NeoTestBase):
         conn = Mock({
             'getNextId': 1,
             'getAddress': storage_address,
+            '__repr__': 'connection mock'
         })
         cell = Mock({
             'getAddress': 'FakeServer',