old_contents: import pytest
  import subprocess
  import os
  import sys
  
  prefix = '.'
  for i in range(0,3):
      if os.path.exists(os.path.join(prefix, 'pyiso.py')):
          sys.path.insert(0, prefix)
          break
      else:
          prefix = '../' + prefix
  
  import pyiso
  
  def test_nofiles(tmpdir):
      # First set things up, and generate the ISO with genisoimage.
      outfile = tmpdir.join("no-file-test.iso")
      indir = tmpdir.mkdir("nofile")
      subprocess.call(["genisoimage", "-v", "-v", "-iso-level", "1", "-no-pad",
                       "-o", str(outfile), str(indir)])
  
      # Now open up the ISO with pyiso and check some things out.
      iso = pyiso.PyIso()
      iso.open(open(str(outfile), 'rb'))
  
      # With no files, the ISO should be exactly 24 extents long.
      assert(iso.pvd.space_size == 24)
      # genisoimage always produces ISOs with 2048-byte sized logical blocks.
      assert(iso.pvd.log_block_size == 2048)
      # With no files, the path table should be exactly 10 bytes (just for the
      # root directory entry).
      assert(iso.pvd.path_tbl_size == 10)
      # The little endian version of the path table should start at extent 19.
      assert(iso.pvd.path_table_location_le == 19)
      # The big endian version of the path table should start at extent 21.
      assert(iso.pvd.path_table_location_be == 21)
  
new_contents: import pytest
  import subprocess
  import os
  import sys
  
  prefix = '.'
  for i in range(0,3):
      if os.path.exists(os.path.join(prefix, 'pyiso.py')):
          sys.path.insert(0, prefix)
          break
      else:
          prefix = '../' + prefix
  
  import pyiso
  
  def test_parse_nofiles(tmpdir):
      # First set things up, and generate the ISO with genisoimage.
      outfile = tmpdir.join("no-file-test.iso")
      indir = tmpdir.mkdir("nofile")
      subprocess.call(["genisoimage", "-v", "-v", "-iso-level", "1", "-no-pad",
                       "-o", str(outfile), str(indir)])
  
      # Now open up the ISO with pyiso and check some things out.
      iso = pyiso.PyIso()
      iso.open(open(str(outfile), 'rb'))
  
      # With no files, the ISO should be exactly 24 extents long.
      assert(iso.pvd.space_size == 24)
      # genisoimage always produces ISOs with 2048-byte sized logical blocks.
      assert(iso.pvd.log_block_size == 2048)
      # With no files, the path table should be exactly 10 bytes (just for the
      # root directory entry).
      assert(iso.pvd.path_tbl_size == 10)
      # The little endian version of the path table should start at extent 19.
      assert(iso.pvd.path_table_location_le == 19)
      # The big endian version of the path table should start at extent 21.
      assert(iso.pvd.path_table_location_be == 21)
  
subject: Rename the test.