text: #!/usr/bin/env python2.7
  """
  Run a regresion test on a hierarchical_decoder.
  """
  
  import unittest
  from testutils import header,openram_test
  import sys,os
  sys.path.append(os.path.join(sys.path[0],".."))
  import globals
  from globals import OPTS
  import debug
  
  class hierarchical_decoder_test(openram_test):
  
      def runTest(self):
          globals.init_openram("config_20_{0}".format(OPTS.tech_name))
          global verify
          import verify
          OPTS.check_lvsdrc = False
  
          import hierarchical_decoder
          import tech
  
          # Doesn't require hierarchical decoder
          # debug.info(1, "Testing 4 row sample for hierarchical_decoder")
          # a = hierarchical_decoder.hierarchical_decoder(rows=4)
          # self.local_check(a)
  
          # Doesn't require hierarchical decoder
          # debug.info(1, "Testing 8 row sample for hierarchical_decoder")
          # a = hierarchical_decoder.hierarchical_decoder(rows=8)
          # self.local_check(a)
  
          debug.info(1, "Testing 16 row sample for hierarchical_decoder")
          a = hierarchical_decoder.hierarchical_decoder(rows=16)
          self.local_check(a)
  
          debug.info(1, "Testing 32 row sample for hierarchical_decoder")
          a = hierarchical_decoder.hierarchical_decoder(rows=32)
          self.local_check(a)
  
          debug.info(1, "Testing 128 row sample for hierarchical_decoder")
          a = hierarchical_decoder.hierarchical_decoder(rows=128)
          self.local_check(a)
  
          debug.info(1, "Testing 512 row sample for hierarchical_decoder")
          a = hierarchical_decoder.hierarchical_decoder(rows=512)
          self.local_check(a)
  
          OPTS.check_lvsdrc = True
          globals.end_openram()
          
  # instantiate a copdsay of the class to actually run the test
  if __name__ == "__main__":
      (OPTS, args) = globals.parse_args()
      del sys.argv[1:]
      header(__file__, OPTS.tech_name)
      unittest.main()
  