Method test_expr_grammar

Lib/test/test_peg_generator/test_pegen.py:118–132

(self)

        )

    def test_expr_grammar(self) -> None:
        grammar = """
        start: sum NEWLINE
        sum: term '+' term | term
        term: NUMBER
        """
        parser_class = make_parser(grammar)
        node = parse_string("42\n", parser_class)
        self.assertEqual(
            node,
            [
                TokenInfo(NUMBER, string="42", start=(1, 0), end=(1, 2), line="42\n"),
                TokenInfo(NEWLINE, string="\n", start=(1, 2), end=(1, 3), line="42\n"),
            ],
        )

    def test_optional_operator(self) -> None:
        grammar = """