text: import unittest
  
  from katas.kyu_5.maximum_subarray_sum import maxSequence
  
  
  class MaximumSubarraySumTestCase(unittest.TestCase):
      def test_equals(self):
          self.assertEqual(maxSequence([-2, 1, -3, 4, -1, 2, 1, -5, 4]), 6)
  
      def test_equals_2(self):
          self.assertEqual(maxSequence([]), 0)
  