Function do_expr_error_test

core/src/parser.rs:2983–2985

Wrapper around `do_error_test` to parse an expression. Given that expressions alone are not valid statements, we have to put them in a statement to parse them. In doing so, we can also put an extra statement after them to ensure we detect their end properly.

(input: &str, msg: &str)

    /// valid statements, we have to put them in a statement to parse them.  In doing so, we can
    /// also put an extra statement after them to ensure we detect their end properly.
    fn do_expr_error_test(input: &str, msg: &str) {
        do_error_test(&format!("PRINT {}, 1", input), msg)
    }

    #[test]
    fn test_expr_literals() {