def test_basics(self):
code = """
(set! x 3)
(+ x 2)
(if y p q)
(define a (if (= 2 3) (* 3 3) (* 4 4)))
"""
tokens = tokenize(code)
actT = []
while tokens:
actT.append(parse(tokens))
expT = [['set!', 'x', 3],
['+', 'x', 2],
['if', 'y', 'p', 'q'],
['define', 'a',
['if',
['=', 2, 3],
['*', 3, 3],
['*', 4, 4]]]]
self.assertEqual(expT, actT)
def test_expression_with_float(self):
expr = ['(', 'set!', 'x', '23.', ')']
expExp = ['set!', 'x', 23.]
actExp = parse(expr)
self.assertEqual(actExp, expExp)
def test_empty_expresion(self):
expExp = []
actExp = parse(['(', ')'])
self.assertEqual(len(actExp), len(expExp))
