def METHOD_NAME():
    mc_hdu = moment_cube()
    sc = SpectralCube.read(mc_hdu)
    sa,ya,xa = sc._pix_size()
    s,y,x = (sc._pix_size_slice(ii) for ii in range(3))
    assert_allclose(sa, s)
    assert_allclose(ya, y)
    assert_allclose(xa, x)