def setUp(self):
        self.cub = data_dir / "pattern.cub"
        self.cubpvl = pvl.PVLModule(
            IsisCube=pvl.PVLObject(
                Core=pvl.PVLObject(
                    StartByte=65537,
                    Format="Tile",
                    TileSamples=128,
                    TileLines=128,
                    Dimensions=pvl.PVLGroup(Samples=90, Lines=90, Bands=1),
                    Pixels=pvl.PVLGroup(
                        Type="Real", ByteOrder="Lsb", Base=0.0, Multiplier=1.0
                    ),
                )
            ),
            Label=pvl.PVLObject(Bytes=65536),
        )