  from nose.tools import assert_equal
  
  
  class TestPermutations(object):
  
      def test_permutations(self):
          permutations = Permutations()
          assert_equal(permutations.find_permutations(None), None)
          assert_equal(permutations.find_permutations(''), '')
 
</s> remove         assert_equal(permutations.find_permutations(None), None)
        assert_equal(permutations.find_permutations(''), '')
 </s> add         self.assertEqual(permutations.find_permutations(None), None)
        self.assertEqual(permutations.find_permutations(''), '') </s> remove from nose.tools import assert_equal
 </s> add import unittest </s> remove class TestGridPath(object):
 </s> add class TestGridPath(unittest.TestCase): </s> remove class TestLongestCommonSubstr(object):
 </s> add class TestLongestCommonSubstr(unittest.TestCase): </s> remove class TestLongestCommonSubseq(object):
 </s> add class TestLongestCommonSubseq(unittest.TestCase):
class TestPermutations(unittest.TestCase):
  from nose.tools import assert_equal
  
  
class TestPermutations(unittest.TestCase):
  
      def test_permutations(self):
          permutations = Permutations()
          assert_equal(permutations.find_permutations(None), None)
          assert_equal(permutations.find_permutations(''), '')
keep keep keep replace keep keep keep keep keep
 #273: Remove nose dependency for recursion_dynamic/ (#280) 
recursion_dynamic/permutations/test_permutations.py