Function cool_asserts::get_panic_message

pub fn get_panic_message(panic: &Box<dyn Any + Send>) -> Option<&str>

Get the panic message as a &str, if available

While a panic value can be any type, usually it is either a String or a str, hidden inside a Box<dyn Any + Send + Sync> (see std::thread::Result for more info). This function gets the panic message as an &str (if available) from a panic value.

use std::panic::catch_unwind;
use cool_asserts::get_panic_message;

let result = catch_unwind(|| panic!("{}, {}!", "Hello", "World"));
let panic = result.unwrap_err();
let message = get_panic_message(&panic).unwrap();

assert_eq!(message, "Hello, World!");