Make some unit tests pass.

master/buildbot/test/unit/test_changes_pb.py

@@ -0,0 +1,50 @@
+
+"""
+Test the PB change source.
+"""
+
+from twisted.trial.unittest import TestCase
+from twisted.spread.pb import IPerspective
+from twisted.cred.credentials import UsernamePassword
+
+from buildbot.master import BotMaster
+from buildbot.changes.pb import ChangePerspective, PBChangeSource
+
+class TestPBChangeSource(TestCase):
+    """
+    Tests for PBChangeSource.
+    """
+    def setUp(self):
+        """
+        Create an unstarted BotMaster instance with a PBChangeSource as a child.
+        """
+        self.username = 'alice'
+        self.password = 'sekret'
+        self.master = BotMaster()
+        self.change_source = PBChangeSource(self.username, self.password)
+        self.master.change_svc.addSource(self.change_source)
+
+
+    def test_authentication(self):
+        """
+        After the BotMaster service starts, the PBChangeSource's credentials are
+        accepted by the master's credentials checker.
+        """
+        self.master.startService()
+        self.assertEquals(
+            self.master.checker.requestAvatarId(
+                UsernamePassword(self.username, self.password)),
+            self.username)
+
+
+    def test_authorization(self):
+        """
+        After the BotMaster service starts, a ChangePerspective can be retrieved
+        from the master's dispatcher (realm) with the PBChangeSource's username
+        (avatar identifier).
+        """
+        self.master.startService()
+        perspective = self.master.dispatcher.requestAvatar(
+            self.username, None, IPerspective)
+        self.assertIsInstance(perspective, ChangePerspective)
+