Method test_child_already_exists

xarray/tests/test_treenode.py:208–213

(self)

        assert mary.parent is john

    def test_child_already_exists(self) -> None:
        mary: TreeNode = TreeNode()
        john: TreeNode = TreeNode(children={"Mary": mary})
        mary_2: TreeNode = TreeNode()
        with pytest.raises(KeyError):
            john._set_item("Mary", mary_2, allow_overwrite=False)

    def test_set_grandchild(self) -> None:
        rose: TreeNode = TreeNode()