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#![warn(rust_2018_idioms)]
#![cfg(feature = "full")]
use tokio::io::{duplex, AsyncReadExt, AsyncWriteExt};
#[tokio::test]
async fn ping_pong() {
let (mut a, mut b) = duplex(32);
let mut buf = [0u8; 4];
a.write_all(b"ping").await.unwrap();
b.read_exact(&mut buf).await.unwrap();
assert_eq!(&buf, b"ping");
b.write_all(b"pong").await.unwrap();
a.read_exact(&mut buf).await.unwrap();
assert_eq!(&buf, b"pong");
}
#[tokio::test]
async fn across_tasks() {
let (mut a, mut b) = duplex(32);
let t1 = tokio::spawn(async move {
a.write_all(b"ping").await.unwrap();
let mut buf = [0u8; 4];
a.read_exact(&mut buf).await.unwrap();
assert_eq!(&buf, b"pong");
});
let t2 = tokio::spawn(async move {
let mut buf = [0u8; 4];
b.read_exact(&mut buf).await.unwrap();
assert_eq!(&buf, b"ping");
b.write_all(b"pong").await.unwrap();
});
t1.await.unwrap();
t2.await.unwrap();
}
#[tokio::test]
async fn disconnect() {
let (mut a, mut b) = duplex(32);
let t1 = tokio::spawn(async move {
a.write_all(b"ping").await.unwrap();
// and dropped
});
let t2 = tokio::spawn(async move {
let mut buf = [0u8; 32];
let n = b.read(&mut buf).await.unwrap();
assert_eq!(&buf[..n], b"ping");
let n = b.read(&mut buf).await.unwrap();
assert_eq!(n, 0);
});
t1.await.unwrap();
t2.await.unwrap();
}
#[tokio::test]
async fn max_write_size() {
let (mut a, mut b) = duplex(32);
let t1 = tokio::spawn(async move {
let n = a.write(&[0u8; 64]).await.unwrap();
assert_eq!(n, 32);
let n = a.write(&[0u8; 64]).await.unwrap();
assert_eq!(n, 4);
});
let t2 = tokio::spawn(async move {
let mut buf = [0u8; 4];
b.read_exact(&mut buf).await.unwrap();
});
t1.await.unwrap();
t2.await.unwrap();
}
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