text: import os
  
  TESTDATADIR = os.path.abspath(os.path.dirname(__file__))
  
  TESTDATA = {
          'tar.gz': os.path.join(TESTDATADIR, 'LC08_L1TP_198020_20170909_20170927_01_T1_MTL.tar.gz'),
          'MTL': os.path.join(TESTDATADIR, 'LC08_L1TP_198020_20170909_20170927_01_T1_MTL.txt')}
  