Rocket/core/lib/tests/nested-fairing-attaches.rs

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#![feature(proc_macro_hygiene)]
#[macro_use] extern crate rocket;
use std::sync::atomic::{AtomicUsize, Ordering};
use rocket::State;
use rocket::fairing::AdHoc;
use rocket::http::Method;
#[derive(Default)]
struct Counter {
attach: AtomicUsize,
get: AtomicUsize,
}
#[get("/")]
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fn index(counter: State<'_, Counter>) -> String {
let attaches = counter.attach.load(Ordering::Relaxed);
let gets = counter.get.load(Ordering::Acquire);
format!("{}, {}", attaches, gets)
}
fn rocket() -> rocket::Rocket {
rocket::ignite()
.mount("/", routes![index])
.attach(AdHoc::on_attach("Outer", |rocket| {
let counter = Counter::default();
counter.attach.fetch_add(1, Ordering::Relaxed);
let rocket = rocket.manage(counter)
.attach(AdHoc::on_request("Inner", |req, _| {
if req.method() == Method::Get {
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let counter = req.guard::<State<'_, Counter>>().unwrap();
counter.get.fetch_add(1, Ordering::Release);
}
}));
Ok(rocket)
}))
}
mod nested_fairing_attaches_tests {
use super::*;
use rocket::local::Client;
#[rocket::async_test]
async fn test_counts() {
let client = Client::new(rocket()).unwrap();
let mut response = client.get("/").dispatch().await;
assert_eq!(response.body_string().await, Some("1, 1".into()));
let mut response = client.get("/").dispatch().await;
assert_eq!(response.body_string().await, Some("1, 2".into()));
client.get("/").dispatch().await;
client.get("/").dispatch().await;
let mut response = client.get("/").dispatch().await;
assert_eq!(response.body_string().await, Some("1, 5".into()));
}
}