def METHOD_NAME(rgb_byte_tif_reader):
    with rgb_byte_tif_reader as src:
        out = np.zeros((3, 800, 800), dtype=np.uint8)
        data = src.read(
            out=out,
            window=((-200, 200), (-200, 200)),
            masked=True,
            boundless=True)
        assert data.shape == (3, 800, 800)
        assert data.any()
        assert data[0, 798, 798] == 13