[trac698] "None" is set to "_socket" parameter when the session object is closed,

in order to distinguish from the other parameter "_closed".

src/lib/python/isc/config/tests/ccsession_test.py

@@ -234,7 +234,7 @@ class TestModuleCCSession(unittest.TestCase):
         fake_session = FakeModuleCCSession()
         mccs = self.create_session("spec1.spec", None, None, fake_session)
         mccs.close()
-        self.assertEqual("closed", fake_session._socket)
+        self.assertEqual(None, fake_session._socket)
 
     def my_config_handler_ok(self, new_config):
         return isc.config.ccsession.create_answer(0)

src/lib/python/isc/config/tests/unittest_fakesession.py

@@ -95,7 +95,7 @@ class FakeModuleCCSession:
 
     def close(self):
         # need to pass along somehow that this function has been called,
-        self._socket = "closed"
+        self._socket = None
         self._closed = True
 
     def set_timeout(self, timeout):