message: updated the assert_lists_equal helper to have more meaningful output
diff: @@ -15,10 +15,10 @@ class HistoryTestCases(unittest.TestCase):
  def setUp(self):
  self.tHistory = TestHistory()
  - def assert_lists_equal(self, listA, listB):
  - assert len(listA) == len(listB), "assert that both lists to compare are of equal length({}, {})".format(len(listA), len(listB))
  - for i in range(len(listA)):
  - assert listA[i] == listB[i], "assert that element {} of the lists are equal ({} == {})".format(i, listA[i], listB[i])
  + def assert_lists_equal(self, expected, actual):
  + assert len(expected) == len(actual), "the given list should have had the length {}, but instead had {}".format(len(expected), len(actual))
  + for i in range(len(expected)):
  + assert expected[i] == actual[i], "the {} element of the expected list should be {}, but was {}.".format(i, expected[i], actual[i])
  def test_push_and_retrieve(self):
  tList = []
  