[1451] address review comments

src/bin/ddns/tests/ddns_test.py

@@ -17,10 +17,55 @@
 
 import unittest
 import isc
+import ddns
+import isc.config
 
-class TestInitialization(unittest.TestCase):
-    def test_noop(self):
-        self.assertTrue(True)
+class MyCCSession(isc.config.ConfigData):
+    '''Fake session with minimal interface compliance'''
+    def __init__(self):
+        module_spec = isc.config.module_spec_from_file(
+            ddns.SPECFILE_LOCATION)
+        isc.config.ConfigData.__init__(self, module_spec)
+        self._started = False
+
+    def start(self):
+        '''Called by DDNSServer initialization, but not used in tests'''
+        self._started = True
+
+class TestDDNSServer(unittest.TestCase):
+    def setUp(self):
+        cc_session = MyCCSession()
+        self.assertFalse(cc_session._started)
+        self.ddns_server = ddns.DDNSServer(cc_session)
+        self.assertTrue(cc_session._started)
+
+    def test_config_handler(self):
+        # Config handler does not do anything yet, but should at least
+        # return 'ok' for now.
+        new_config = {}
+        answer = self.ddns_server.config_handler(new_config)
+        self.assertEqual((0, None), isc.config.parse_answer(answer))
+
+    def test_shutdown_command(self):
+        '''Test whether the shutdown command works'''
+        self.assertFalse(self.ddns_server._shutdown)
+        answer = self.ddns_server.command_handler('shutdown', None)
+        self.assertEqual((0, None), isc.config.parse_answer(answer))
+        self.assertTrue(self.ddns_server._shutdown)
+
+    def test_command_handler(self):
+        '''Test some commands.'''
+        # this command should not exist
+        answer = self.ddns_server.command_handler('bad_command', None)
+        self.assertEqual((1, 'Unknown command: bad_command'),
+                         isc.config.parse_answer(answer))
+
+    def test_signal_handler(self):
+        '''Test whether signal_handler calls shutdown()'''
+        signal_handler = ddns.create_signal_handler(self.ddns_server)
+        self.assertFalse(self.ddns_server._shutdown)
+        signal_handler(None, None)
+        self.assertTrue(self.ddns_server._shutdown)
 
 if __name__== "__main__":
     isc.log.resetUnitTestRootLogger()