def test_circular_dependency(self):
a = TextLabelFactory()
b = TextLabelFactory(parent=a)
c = TextLabelFactory(parent=b)
b.parent = c
with self.assertRaises(ValueError):
return b.save()
def test_change_parent_go_up_one_level(self):
a = TextLabelFactory()
b = TextLabelFactory(parent=a)
c = TextLabelFactory(parent=b)
c.parent = a
c.save()
self.assertEqual(c.parent, a)
self.assertEqual(c.order, 1)
b.refresh_from_db()
self.assertEqual(b.order, 2)
def test_change_parent_go_root_recompute_child(self):
root = TextLabelFactory()
child_1 = TextLabelFactory(parent=root)
child_2 = TextLabelFactory(parent=root)
child_1.parent = None
child_1.save()
root.refresh_from_db()
child_2.refresh_from_db()
self.assertEqual(root.parent, None)
self.assertEqual(root.order, 2)
self.assertEqual(child_1.parent, None)
self.assertEqual(child_1.order, 1)
self.assertEqual(child_2.parent, root)
self.assertEqual(child_2.order, 1)
