          assert_raises(TypeError, solution.merge_ranges, None)
          assert_equal(solution.merge_ranges([]), [])
          array = [(2, 3), (7, 9)]
          expected = [(2, 3), (7, 9)]
          assert_equal(solution.merge_ranges(array), expected)
          array = [(3, 5), (2, 3), (7, 9), (8, 10)]
          expected = [(2, 5), (7, 10)]
          assert_equal(solution.merge_ranges(array), expected)
          array = [(2, 3), (3, 5), (7, 9), (8, 10), (1, 11)]
          expected = [(1, 11)]
 
</s> remove         assert_equal(solution.merge_ranges(array), expected)
 </s> add         self.assertEqual(solution.merge_ranges(array), expected) </s> remove         assert_raises(TypeError, solution.merge_ranges, None)
        assert_equal(solution.merge_ranges([]), [])
 </s> add         self.assertRaises(TypeError, solution.merge_ranges, None)
        self.assertEqual(solution.merge_ranges([]), []) </s> remove         assert_equal(solution.merge_ranges(array), expected)
 </s> add         self.assertEqual(solution.merge_ranges(array), expected) </s> remove     "        assert_equal(solution.merge_ranges(array), expected)\n",
 </s> add     "        self.assertEqual(solution.merge_ranges(array), expected)\n", </s> remove     "        assert_equal(solution.merge_ranges(array), expected)\n",
 </s> add     "        self.assertEqual(solution.merge_ranges(array), expected)\n",
        self.assertEqual(solution.merge_ranges(array), expected)
          assert_raises(TypeError, solution.merge_ranges, None)
          assert_equal(solution.merge_ranges([]), [])
          array = [(2, 3), (7, 9)]
          expected = [(2, 3), (7, 9)]
        self.assertEqual(solution.merge_ranges(array), expected)
          array = [(3, 5), (2, 3), (7, 9), (8, 10)]
          expected = [(2, 5), (7, 10)]
          assert_equal(solution.merge_ranges(array), expected)
          array = [(2, 3), (3, 5), (7, 9), (8, 10), (1, 11)]
          expected = [(1, 11)]
keep keep keep keep replace keep keep keep keep keep
 #273: Remove nose dependency for online_judges/ (#282) 
online_judges/merge_ranges/test_merge_ranges.py