Mkdir(to, 0777)

	if err := Rename(from, to); !IsNotExist(err) {
		t.Errorf("Rename(%q, %q) = %v; want an IsNotExist error", from, to, err)
	}
}

func TestRenameToDirFailed(t *testing.T) {
	defer chtmpdir(t)()
	from, to := "renamefrom", "renameto"

	Mkdir(from, 0777)
	Mkdir(to, 0777)

	err := Rename(from, to)
	switch err := err.(type) {
	case *LinkError: