from unittest import TestCase

from src.parser import Parser
from tests.parser import ParserWrapper


def reduce(exp, **kwargs):
    return ParserWrapper(Parser, **kwargs).run([exp]).reduce()


class TestLeidenOefenopgave(TestCase):
    def test_1(self):
        return
        for exp, solution in [
                ('-5(x2 -3x + 6)',       '-30 + 15 * x - 5 * x ^ 2'),
                ('(x+1)^2',              'x ^ 2 + 2 * x + 1'),
                ('(x-1)^2',              'x ^ 2 - 2 * x + 1'),
                ('(2x+x)*x',             '3 * x ^ 2'),
                ('-2(6x-4)^2*x',         '-72 * x^3 + 96 * x ^ 2 + 32 * x'),
                ('(4x + 5) * -(5 - 4x)', '16x^2 - 25'),
                ]:
            self.assertEqual(str(reduce(exp)), solution)

    def test_2(self):
        pass

    def test_3(self):
        pass

    def test_4(self):
        return
        for exp, solution in [
                ('2/15 + 1/4',      '23/60'),
                ('2/7 - 4/11',      '-6/77'),
                ('(7/3) * (3/5)',   '7/5'),
                ('(3/4) / (5/6)',   '9/10'),
                ('1/4 * 1/x',       '1/(4x)'),
                ('(3/x^2) / (x/7)', '21/x^3'),
                ('1/x + 2/(x+1)',   '(3x + 1) / (x * (x + 1))'),
                ]:
            self.assertEqual(str(reduce(exp)), solution)