  from nose.tools import assert_equal
  
  
  class TestMinHeap(object):
  
      def test_min_heap(self):
          heap = MinHeap()
          assert_equal(heap.peek_min(), None)
          assert_equal(heap.extract_min(), None)
 
</s> remove         assert_equal(heap.peek_min(), None)
        assert_equal(heap.extract_min(), None)
 </s> add         self.assertEqual(heap.peek_min(), None)
        self.assertEqual(heap.extract_min(), None) </s> remove from nose.tools import assert_equal
 </s> add import unittest </s> remove     "class TestMinHeap(object):\n",
 </s> add     "class TestMinHeap(unittest.TestCase):\n", </s> remove class TestBstValidate(object):
 </s> add class TestBstValidate(unittest.TestCase): </s> remove class TestCheckBalance(object):
 </s> add class TestCheckBalance(unittest.TestCase):
class TestMinHeap(unittest.TestCase):
  from nose.tools import assert_equal
  
  
class TestMinHeap(unittest.TestCase):
  
      def test_min_heap(self):
          heap = MinHeap()
          assert_equal(heap.peek_min(), None)
          assert_equal(heap.extract_min(), None)
keep keep keep replace keep keep keep keep keep
 #273: Remove nose dependency for graphs_trees/ (#277) 
graphs_trees/min_heap/test_min_heap.py