def test1():
    '''ASTRODATA-iter TEST 1: Compare for AD and for HDUList (MEF)'''
    ad = AstroData(sci123)
    aditerImageObjectIdList = []
    hduImageObjectIdList = []
    for a in ad:
        aditerImageObjectIdList.append(id(a.hdulist[1]))
    for phu in ad.hdulist[1:]:
        hduImageObjectIdList.append(id(phu))
    ok_(aditerImageObjectIdList == hduImageObjectIdList, \
        msg='Object ids are not the same')
    ad.close()
def test5():
    '''ASTRODATA-mode TEST 5: Clobber changed readonly file'''
    outfile = 'testmode5.fits'
    if os.path.exists(outfile):
        os.remove(outfile)
    shutil.copy(sci123, outfile)
    ad = AstroData(outfile, mode='update')
    ad.hdulist[0].header['INSTRUME'] = 'GMOS-S'
    ad.write(clobber=True)
    ad.close()
    ad = AstroData(outfile)
    ok_(ad.hdulist[0].header['INSTRUME'] == 'GMOS-S', msg='Keyword is different')
    os.remove(outfile)
    ad.close()