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- import unittest
- from src.parser import Parser
- from src.node import ExpressionLeaf as L
- from tests.parser import run_expressions, apply_expressions
- class TestB1Ch08(unittest.TestCase):
- def test_diagnostic_test_parser(self):
- run_expressions(Parser, [
- ('6*5^2', L(6) * L(5) ** 2),
- ('-5*(-3)^2', (-L(5)) * (-L(3)) ** 2),
- ('7p-3p', L(7) * 'p' + (-L(3) * 'p')),
- ('-5a*-6', (-L(5)) * 'a' * (-L(6))),
- ('3a-8--5-2a', L(3) * 'a' + -L(8) + (--L(5)) + (-L(2) * 'a')),
- ])
- def test_diagnostic_test_application(self):
- apply_expressions(Parser, [
- ('7p+2p', 1, (L(7) + 2) * 'p'),
- ('7p-3p', 1, (L(7) + -L(3)) * 'p'),
- ])
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