new_contents: # Tests universal newline support for both reading and parsing files.
  import unittest
  import test_support
  import os
  import sys
  
  DATA_TEMPLATE=[
      "line1=1", 
  	"line2='this is a very long line designed to go past the magic " + 
      "hundred character limit that is inside fileobject.c and which " + 
      "is meant to speed up the common case, but we also want to test " + 
      "the uncommon case, naturally.'", 
      "def line3():pass"
      ]
  DATA_LF = "\n".join(DATA_TEMPLATE) + "\n"
  DATA_CR = "\r".join(DATA_TEMPLATE) + "\r"
  DATA_CRLF = "\r\n".join(DATA_TEMPLATE) + "\r\n"
  # Note that DATA_MIXED also tests the ability to recognize a lone \r
  # before end-of-file.
  DATA_MIXED = "\n".join(DATA_TEMPLATE) + "\r"
  DATA_SPLIT = map(lambda x: x+"\n", DATA_TEMPLATE)
  
  if not hasattr(sys.stdin, 'newlines'):
      raise test_support.TestSkipped, \
          "This Python does not have universal newline support"
  
  class TestGenericUnivNewlines(unittest.TestCase):
      # use a class variable DATA to define the data to write to the file
      # and a class variable NEWLINE to set the expected newlines value
      READMODE = 'U'
      WRITEMODE = 'wb'
  
      def setUp(self):
          fp = open(test_support.TESTFN, self.WRITEMODE)
          fp.write(self.DATA)
          fp.close()
  
      def tearDown(self):
          try:
              os.unlink(test_support.TESTFN)
          except:
              pass
              
      def test_read(self):
          fp = open(test_support.TESTFN, self.READMODE)
          data = fp.read()
          self.assertEqual(data, DATA_LF)
          self.assertEqual(`fp.newlines`, `self.NEWLINE`)
          
      def test_readlines(self):
          fp = open(test_support.TESTFN, self.READMODE)
          data = fp.readlines()
          self.assertEqual(data, DATA_SPLIT)
          self.assertEqual(`fp.newlines`, `self.NEWLINE`)
  
      def test_readline(self):
          fp = open(test_support.TESTFN, self.READMODE)
          data = []
          d = fp.readline()
          while d:
              data.append(d)
              d = fp.readline()
          self.assertEqual(data, DATA_SPLIT)
          self.assertEqual(`fp.newlines`, `self.NEWLINE`)
          
      def test_seek(self):
          fp = open(test_support.TESTFN, self.READMODE)
          fp.readline()
          pos = fp.tell()
          data = fp.readlines()
          self.assertEqual(data, DATA_SPLIT[1:])
          fp.seek(pos)
          data = fp.readlines()
          self.assertEqual(data, DATA_SPLIT[1:])
          
      def test_execfile(self):
          dict = {}
          execfile(test_support.TESTFN, dict)
          func = dict['line3']
          self.assertEqual(func.func_code.co_firstlineno, 3)
          
  
  class TestNativeNewlines(TestGenericUnivNewlines):
      NEWLINE=None
      DATA=DATA_LF
      READMODE='r'
      WRITEMODE='w'
          
  class TestCRNewlines(TestGenericUnivNewlines):
      NEWLINE='\r'
      DATA=DATA_CR
      
  class TestLFNewlines(TestGenericUnivNewlines):
      NEWLINE='\n'
      DATA=DATA_LF
      
  class TestCRLFNewlines(TestGenericUnivNewlines):
      NEWLINE='\r\n'
      DATA=DATA_CRLF
      
  class TestMixedNewlines(TestGenericUnivNewlines):
      NEWLINE=('\r', '\n')
      DATA=DATA_MIXED
      
  
  def test_main():
      test_support.run_unittest(TestNativeNewlines)
      test_support.run_unittest(TestCRNewlines)
      test_support.run_unittest(TestLFNewlines)
      test_support.run_unittest(TestCRLFNewlines)
      test_support.run_unittest(TestMixedNewlines)
  
  if __name__ == '__main__':
      test_main()
  
subject: Test suite for universal newline support.