def test_tokenize(self):
data = [
('A', ('A',)),
('A + B * C', ('A', '+', 'B', '*', 'C')),
('A+B*C', ('A', '+', 'B', '*', 'C')),
('(r*r)*3.14', ('(', 'r', '*', 'r', ')', '*', '3.14')),
('((A+1)-B)', ('(', '(', 'A', '+', '1', ')', '-', 'B', ')')),
]
for string, result in data:
self.assertEqual(Formula.tokenize(string), result)
