assert_panics!

[aaronabramov]

// success if the closure inside panics, panics if the closure doesn't panic
assert_panics!(|| {
  panic!("sup y'all");
});

see https://doc.rust-lang.org/std/panic/fn.catch_unwind.html

[aaronabramov]

actually catching any panics is a pretty terrible idea.. i wonder if there's a way to get a hold of the panic message and match it with a regex.
so like

assert_panic_message_matches_regex!("unexpected error", || {
  panic!("some unexpected error occurred");
});

[TheWebDevel]

Ha! Interesting. :D