def test_with_letters(self):
with self.assertRaises(RuntimeError) as cm:
rpn.split_on_elements('10 + 10abc')
self.assertIn('invalid symbol', str(cm.exception))
def test_split(self):
result = rpn.split_on_elements("10+10*10")
self.assertEqual(
["10", "+", "10", "*", "10"],
result,
)
def test_split_with_parentheless(self):
result = rpn.split_on_elements("(1 + 2) * 2")
self.assertEqual(
["(", "1", "+", "2", ")", "*", "2"],
result,
)