old_contents: from test import test_support
  import unittest
  import select
  import os
  import sys
  
  @unittest.skipIf(sys.platform[:3] in ('win', 'mac', 'os2', 'riscos'),
                   "can't easily test on this system")
  class SelectTestCase(unittest.TestCase):
  
      class Nope:
          pass
  
      class Almost:
          def fileno(self):
              return 'fileno'
  
      def test_error_conditions(self):
          self.assertRaises(TypeError, select.select, 1, 2, 3)
          self.assertRaises(TypeError, select.select, [self.Nope()], [], [])
          self.assertRaises(TypeError, select.select, [self.Almost()], [], [])
          self.assertRaises(TypeError, select.select, [], [], [], "not a number")
  
      def test_returned_list_identity(self):
          # See issue #8329
          r, w, x = select.select([], [], [], 1)
          self.assertIsNot(r, w)
          self.assertIsNot(r, x)
          self.assertIsNot(w, x)
  
      def test_select(self):
          cmd = 'for i in 0 1 2 3 4 5 6 7 8 9; do echo testing...; sleep 1; done'
          p = os.popen(cmd, 'r')
          for tout in (0, 1, 2, 4, 8, 16) + (None,)*10:
              if test_support.verbose:
                  print 'timeout =', tout
              rfd, wfd, xfd = select.select([p], [], [], tout)
              if (rfd, wfd, xfd) == ([], [], []):
                  continue
              if (rfd, wfd, xfd) == ([p], [], []):
                  line = p.readline()
                  if test_support.verbose:
                      print repr(line)
                  if not line:
                      if test_support.verbose:
                          print 'EOF'
                      break
                  continue
              self.fail('Unexpected return values from select():', rfd, wfd, xfd)
          p.close()
  
  
  def test_main():
      test_support.run_unittest(SelectTestCase)
      test_support.reap_children()
  
  if __name__ == "__main__":
      test_main()
  
new_contents: from test import test_support
  import unittest
  import select
  import os
  import sys
  
  class SelectTestCase(unittest.TestCase):
  
      class Nope:
          pass
  
      class Almost:
          def fileno(self):
              return 'fileno'
  
      def test_error_conditions(self):
          self.assertRaises(TypeError, select.select, 1, 2, 3)
          self.assertRaises(TypeError, select.select, [self.Nope()], [], [])
          self.assertRaises(TypeError, select.select, [self.Almost()], [], [])
          self.assertRaises(TypeError, select.select, [], [], [], "not a number")
  
      def test_returned_list_identity(self):
          # See issue #8329
          r, w, x = select.select([], [], [], 1)
          self.assertFalse(r is w)
          self.assertFalse(r is x)
          self.assertFalse(w is x)
  
      def test_select(self):
          if sys.platform[:3] in ('win', 'mac', 'os2'):
              if test_support.verbose:
                  print "can't easily test on this system"
              return
          cmd = 'for i in 0 1 2 3 4 5 6 7 8 9; do echo testing...; sleep 1; done'
          p = os.popen(cmd, 'r')
          for tout in (0, 1, 2, 4, 8, 16) + (None,)*10:
              if test_support.verbose:
                  print 'timeout =', tout
              rfd, wfd, xfd = select.select([p], [], [], tout)
              if (rfd, wfd, xfd) == ([], [], []):
                  continue
              if (rfd, wfd, xfd) == ([p], [], []):
                  line = p.readline()
                  if test_support.verbose:
                      print repr(line)
                  if not line:
                      if test_support.verbose:
                          print 'EOF'
                      break
                  continue
              self.fail('Unexpected return values from select():', rfd, wfd, xfd)
          p.close()
  
  
  def test_main():
      test_support.run_unittest(SelectTestCase)
      test_support.reap_children()
  
  if __name__ == "__main__":
      test_main()
  
subject: remove use of 2.7 unittest features