old_contents: # Copyright (C) Frederick Dean 2009, All rights reserved
  
  """
  Unit tests for L{OpenSSL.rand}.
  """
  
  from unittest import main
  import os 
  import stat
  
  from OpenSSL.test.util import TestCase
  from OpenSSL import rand
  
  class RandTests(TestCase):
      def test_bytes(self):
          """
          Verify that we can obtain bytes from rand_bytes() and
          that they are different each time.  Test the parameter
          of rand_bytes() for bad values.
          """
          b1 = rand.bytes(50)
          self.assertEqual(len(b1), 50)
          b2 = rand.bytes(num_bytes=50)  # parameter by name
          self.assertNotEqual(b1, b2)  #  Hip, Hip, Horay! FIPS complaince
          b3 = rand.bytes(num_bytes=0) 
          self.assertEqual(len(b3), 0)
          try:
              b4 = rand.bytes(-1) 
              self.assertTrue(False)  # We shouldn't get here
          except ValueError, v:
              self.assertTrue(v.message == "num_bytes must not be negative")
  
  
      def test_add(self):
          """
          Test adding of entropy to the PRNG.
          """
          rand.add('hamburger', 3)
          rand.seed('milk shake')
          self.assertTrue(rand.status())
  
  
      def test_files(self):
          """
          Test reading and writing of files via rand functions.
          """
          # Write random bytes to a file 
          tmpfile = self.mktemp()
          rand.write_file(tmpfile)
          # Verify length of written file
          size = os.stat(tmpfile)[stat.ST_SIZE]
          self.assertEquals(size, 1024)
          # Read random bytes from file 
          rand.load_file(tmpfile)
          rand.load_file(tmpfile, 4)  # specify a length
          # Cleanup
          os.unlink(tmpfile)
  
  
  if __name__ == '__main__':
      main()
  
  
  
new_contents: # Copyright (C) Frederick Dean 2009, All rights reserved
  
  """
  Unit tests for L{OpenSSL.rand}.
  """
  
  from unittest import main
  import os 
  import stat
  
  from OpenSSL.test.util import TestCase
  from OpenSSL import rand
  
  
  class RandTests(TestCase):
      def test_bytes(self):
          """
          Verify that we can obtain bytes from rand_bytes() and
          that they are different each time.  Test the parameter
          of rand_bytes() for bad values.
          """
          b1 = rand.bytes(50)
          self.assertEqual(len(b1), 50)
          b2 = rand.bytes(num_bytes=50)  # parameter by name
          self.assertNotEqual(b1, b2)  #  Hip, Hip, Horay! FIPS complaince
          b3 = rand.bytes(num_bytes=0) 
          self.assertEqual(len(b3), 0)
          exc = self.assertRaises(ValueError, rand.bytes, -1)
          self.assertEqual(exc.message, "num_bytes must not be negative")
  
  
      def test_add(self):
          """
          L{OpenSSL.rand.add} adds entropy to the PRNG.
          """
          rand.add('hamburger', 3)
  
  
      def test_seed(self):
          """
          L{OpenSSL.rand.seed} adds entropy to the PRNG.
          """
          rand.seed('milk shake')
  
  
      def test_status(self):
          """
          L{OpenSSL.rand.status} returns C{True} if the PRNG has sufficient
          entropy, C{False} otherwise.
          """
          # It's hard to know what it is actually going to return.  Different
          # OpenSSL random engines decide differently whether they have enough
          # entropy or not.
          self.assertTrue(rand.status() in (1, 2))
  
  
      def test_files(self):
          """
          Test reading and writing of files via rand functions.
          """
          # Write random bytes to a file 
          tmpfile = self.mktemp()
          rand.write_file(tmpfile)
          # Verify length of written file
          size = os.stat(tmpfile)[stat.ST_SIZE]
          self.assertEquals(size, 1024)
          # Read random bytes from file 
          rand.load_file(tmpfile)
          rand.load_file(tmpfile, 4)  # specify a length
          # Cleanup
          os.unlink(tmpfile)
  
  
  if __name__ == '__main__':
      main()
  
subject: break up the tests a bit, explain why status is kind of lame