use sark::request::Ref;
#[test]
fn request_ref_is_covariant_over_req_lifetime() {
let shorten = |x: Ref<'static>| -> Ref<'_> { x };
let head = b"GET / HTTP/1.1\r\n\r\n";
let long: Ref<'static> = Ref::from_slice(4..5, head, b"");
let short = shorten(long);
assert_eq!(short.path_frame(0..1).unwrap().as_slice(), b"/");
}