  from nose.tools import assert_equal, assert_true, assert_raises
  
  
  class TestMathOps(object):
  
      def test_math_ops(self):
 
</s> remove class TestMathOps(object):
 </s> add class TestMathOps(unittest.TestCase): </s> remove         assert_raises(TypeError, solution.insert, None)
 </s> add         self.assertRaises(TypeError, solution.insert, None) </s> remove from nose.tools import assert_equal, assert_raises
 </s> add import unittest </s> remove from nose.tools import assert_equal, assert_raises
 </s> add import unittest </s> remove from nose.tools import assert_equal, assert_raises
 </s> add import unittest
import unittest
import unittest
  
  
  class TestMathOps(object):
  
      def test_math_ops(self):
replace keep keep keep keep keep
 #273: Remove nose dependency for online_judges/ (#282) 
online_judges/math_ops/test_math_ops.py