manager: error when an alias zone is synced without its source

Signed-off-by: Marc 'risson' Schmitt <marc.schmitt@risson.space>

octodns/manager.py

@@ -375,12 +375,19 @@ class Manager(object):
         futures = []
         for zone_name, zone_source in aliased_zones.items():
             source_config = self.config['zones'][zone_source]
+            print(source_config)
+            try:
+                desired_config = desired[zone_source]
+            except KeyError:
+                raise ManagerException('Zone {} cannot be sync without zone '
+                                       '{} sinced it is aliased'
+                                       .format(zone_name, zone_source))
             futures.append(self._executor.submit(
                 self._populate_and_plan,
                 zone_name,
                 [],
                 [self.providers[t] for t in source_config['targets']],
-                desired=desired[zone_source],
+                desired=desired_config,
                 lenient=lenient
             ))
 

tests/test_octodns_manager.py

@@ -191,6 +191,14 @@ class TestManager(TestCase):
                               'zone alias.tests. is an alias zone',
                               text_type(ctx.exception))
 
+            # Sync an alias without the zone it refers to
+            with self.assertRaises(ManagerException) as ctx:
+                tc = Manager(get_config_filename('simple-alias-zone.yaml')) \
+                    .sync(eligible_zones=["alias.tests."])
+            self.assertEquals('Zone alias.tests. cannot be sync without zone '
+                              'unit.tests. sinced it is aliased',
+                              text_type(ctx.exception))
+
     def test_compare(self):
         with TemporaryDirectory() as tmpdir:
             environ['YAML_TMP_DIR'] = tmpdir.dirname