  from nose.tools import assert_equal
  
  
  class TestUtopianTree(object):
  
      def test_utopian_tree(self):
 
</s> remove class TestUtopianTree(object):
 </s> add class TestUtopianTree(unittest.TestCase): </s> remove from nose.tools import assert_equal
 </s> add import unittest </s> remove class TestMaximizingXor(object):
 </s> add class TestMaximizingXor(unittest.TestCase): </s> remove         assert_equal(solution.calc_utopian_tree_height(0), 1)
        assert_equal(solution.calc_utopian_tree_height(1), 2)
        assert_equal(solution.calc_utopian_tree_height(4), 7)
 </s> add         self.assertEqual(solution.calc_utopian_tree_height(0), 1)
        self.assertEqual(solution.calc_utopian_tree_height(1), 2)
        self.assertEqual(solution.calc_utopian_tree_height(4), 7) </s> remove from nose.tools import assert_equal, assert_raises
 </s> add import unittest
import unittest
import unittest
  
  
  class TestUtopianTree(object):
  
      def test_utopian_tree(self):
replace keep keep keep keep keep
 #273: Remove nose dependency for online_judges/ (#282) 
online_judges/utopian_tree/test_utopian_tree.py