[trac588] Change test to actually test something

src/bin/bindctl/tests/bindctl_test.py

@@ -318,7 +318,7 @@ class TestConfigCommands(unittest.TestCase):
             self.tool.precmd(line)
         self.tool._update_all_modules_info = update_all_modules_info
         # If line is equals to 'EOF', _update_all_modules_info() shouldn't be called
-        self.assertRaises(None, precmd('EOF'))
+        precmd('EOF')
         self.assertRaises(socket.error, precmd, 'continue')
 
     def test_run(self):