}

	// Test that Open does not open Windows device files.
	_, err = d.Open(`NUL`)
	if err == nil {
		t.Errorf(`Open NUL succeeded`)
	}
}

func TestDirFSRootDir(t *testing.T) {
	t.Parallel()

	cwd, err := Getwd()
	if err != nil {
		t.Fatal(err)
	}
	cwd = cwd[len(filepath.VolumeName(cwd)):] // trim volume prefix (C:) on Windows