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async-std/tests/tcp.rs

121 lines
3.3 KiB
Rust

#![cfg(not(target_os = "unknown"))]
5 years ago
use async_std::io;
use async_std::net::{TcpListener, TcpStream};
use async_std::prelude::*;
use async_std::task;
const THE_WINTERS_TALE: &[u8] = b"
Each your doing,
So singular in each particular,
Crowns what you are doing in the present deed,
That all your acts are queens.
";
#[test]
fn connect() -> io::Result<()> {
task::block_on(async {
let listener = TcpListener::bind("127.0.0.1:0").await?;
let addr = listener.local_addr()?;
let t = task::spawn(async move { listener.accept().await });
let stream2 = TcpStream::connect(&addr).await?;
let stream1 = t.await?.0;
assert_eq!(stream1.peer_addr()?, stream2.local_addr()?);
assert_eq!(stream2.peer_addr()?, stream1.local_addr()?);
Ok(())
})
}
#[test]
fn incoming_read() -> io::Result<()> {
task::block_on(async {
let listener = TcpListener::bind("127.0.0.1:0").await?;
let addr = listener.local_addr()?;
task::spawn(async move {
let mut stream = TcpStream::connect(&addr).await?;
stream.write_all(THE_WINTERS_TALE).await?;
io::Result::Ok(())
});
let mut buf = vec![0; 1024];
let mut incoming = listener.incoming();
let mut stream = incoming.next().await.unwrap()?;
let n = stream.read(&mut buf).await?;
assert_eq!(&buf[..n], THE_WINTERS_TALE);
Ok(())
})
}
#[test]
fn smoke_std_stream_to_async_listener() -> io::Result<()> {
use std::io::Write;
task::block_on(async {
let listener = TcpListener::bind("127.0.0.1:0").await?;
let addr = listener.local_addr()?;
let mut std_stream = std::net::TcpStream::connect(&addr)?;
std_stream.write_all(THE_WINTERS_TALE)?;
let mut buf = vec![0; 1024];
let mut incoming = listener.incoming();
let mut stream = incoming.next().await.unwrap()?;
let n = stream.read(&mut buf).await?;
assert_eq!(&buf[..n], THE_WINTERS_TALE);
Ok(())
})
}
#[test]
fn smoke_async_stream_to_std_listener() -> io::Result<()> {
use std::io::Read;
let std_listener = std::net::TcpListener::bind("127.0.0.1:0")?;
let addr = std_listener.local_addr()?;
task::block_on(async move {
let mut stream = TcpStream::connect(&addr).await?;
stream.write_all(THE_WINTERS_TALE).await?;
io::Result::Ok(())
})?;
let mut buf = vec![0; 1024];
let mut incoming = std_listener.incoming();
let mut stream = incoming.next().unwrap()?;
let n = stream.read(&mut buf).unwrap();
assert_eq!(&buf[..n], THE_WINTERS_TALE);
Ok(())
}
#[test]
fn cloned_streams() -> io::Result<()> {
task::block_on(async {
let listener = TcpListener::bind("127.0.0.1:0").await?;
let addr = listener.local_addr()?;
let mut stream = TcpStream::connect(&addr).await?;
let mut cloned_stream = stream.clone();
let mut incoming = listener.incoming();
let mut write_stream = incoming.next().await.unwrap()?;
write_stream.write_all(b"Each your doing").await?;
let mut buf = [0; 15];
stream.read_exact(&mut buf[..8]).await?;
cloned_stream.read_exact(&mut buf[8..]).await?;
assert_eq!(&buf[..15], b"Each your doing");
Ok(())
})
}