Fixes tests

celery/tests/events/test_state.py

@@ -244,6 +244,8 @@ class test_Task(AppCase):
                     eta=1,
                     runtime=0.0001,
                     expires=1,
+                    parent_id='bdefc',
+                    root_id='dedfef',
                     foo=None,
                     exception=1,
                     received=time() - 10,

celery/tests/tasks/test_canvas.py

@@ -303,7 +303,7 @@ class test_group(CanvasCase):
 
     def test_maybe_group_sig(self):
         self.assertListEqual(
-            _maybe_group(self.add.s(2, 2)), [self.add.s(2, 2)],
+            _maybe_group(self.add.s(2, 2), self.app), [self.add.s(2, 2)],
         )
 
     def test_from_dict(self):