Method invoke_ast

Lib/test/test_ast/test_ast.py:3456–3465

(self, *flags)

        Path(self.filename).write_text(self.text_normalize(content))

    def invoke_ast(self, *flags):
        stderr = StringIO()
        stdout = StringIO()
        with (
            contextlib.redirect_stdout(stdout),
            contextlib.redirect_stderr(stderr),
        ):
            ast.main(args=[*flags, self.filename])
        self.assertEqual(stderr.getvalue(), '')
        return stdout.getvalue().strip()

    def check_output(self, source, expect, *flags):
        self.set_source(source)