def test_onlyops(self):
data = "+ -"
result = solution(data)
self.assertEqual(-1, result)
def test_big_number(self):
data = "1048576 DUP + DUP +"
result = solution(data)
self.assertEqual(-1, result)
def test_navie_err(self):
data = "5 6 + -"
result = solution(data)
self.assertEqual(-1, result)
def test_navie(self):
data = "13 DUP 4 POP 5 DUP + DUP + -"
result = solution(data)
self.assertEqual(7, result)
def test_none(self):
data = " "
result = solution(data)
self.assertEqual(-1, result)
def test_single_number(self):
data = "13"
result = solution(data)
self.assertEqual(13, result)