use rocket::http::Header; use rocket::local::blocking::Client; #[test] fn test_local_request_clone_soundness() { let client = Client::tracked(rocket::ignite()).unwrap(); // creates two LocalRequest instances that shouldn't share the same req let r1 = client.get("/").header(Header::new("key", "val1")); let mut r2 = r1.clone(); // save the iterator, which internally holds a slice let mut iter = r1.inner().headers().get("key"); // insert headers to force header map reallocation. for i in 0..100 { r2.add_header(Header::new(i.to_string(), i.to_string())); } // Replace the original key/val. r2.add_header(Header::new("key", "val2")); // Heap massage: so we've got crud to print. let _: Vec = vec![0, 0xcafebabe, 31337, 0]; // Ensure we're good. let s = iter.next().unwrap(); println!("{}", s); // And that we've got the right data. assert_eq!(r1.inner().headers().get("key").collect::>(), vec!["val1"]); assert_eq!(r2.inner().headers().get("key").collect::>(), vec!["val1", "val2"]); }