    def test_dump(self):
        node = ast.parse('spam(eggs, "and cheese")')
        self.assertEqual(ast.dump(node),
            "Module(body=[Expr(value=Call(func=Name(id='spam', ctx=Load()), "
            "args=[Name(id='eggs', ctx=Load()), Constant(value='and cheese')], "
            "keywords=[]))], type_ignores=[])"
        )
        self.assertEqual(ast.dump(node, annotate_fields=False),
            "Module([Expr(Call(Name('spam', Load()), [Name('eggs', Load()), "
            "Constant('and cheese')], []))], [])"
        )
        self.assertEqual(ast.dump(node, include_attributes=True),
            "Module(body=[Expr(value=Call(func=Name(id='spam', ctx=Load(), "
            "lineno=1, col_offset=0, end_lineno=1, end_col_offset=4), "
            "args=[Name(id='eggs', ctx=Load(), lineno=1, col_offset=5, "
            "end_lineno=1, end_col_offset=9), Constant(value='and cheese', "
            "lineno=1, col_offset=11, end_lineno=1, end_col_offset=23)], keywords=[], "
            "lineno=1, col_offset=0, end_lineno=1, end_col_offset=24), "
            "lineno=1, col_offset=0, end_lineno=1, end_col_offset=24)], type_ignores=[])"
        )
The software reads data past the end, or before the beginning, of the intended buffer.