def test_origin_from_path_returns_relative_to_root_if_path_starts_with_slash(self):
root = Tree('root')
child = Tree('child')
root.add_child(child)
node, parts = child._origin_from_path('/root/child')
self.assertEqual(root, node)
self.assertEqual(['child'], parts)
def test_origin_from_path_returns_relative_to_current_node_if_path_does_not_start_with_slash(self):
root = Tree('root')
child1 = Tree('child1')
child2 = Tree('child2')
root.add_child(child1)
child1.add_child(child2)
node, parts = child1._origin_from_path('child2')
self.assertEqual(child1, node)
self.assertEqual(['child2'], parts)