Source code
Revision control
Copy as Markdown
Other Tools
// FIXME: re-implement tests with `async/await`
/*
#[cfg(feature = "runtime")]
use std::collections::HashMap;
use std::cmp;
use std::io::{self, Read, Write};
#[cfg(feature = "runtime")]
use std::sync::{Arc, Mutex};
use bytes::Buf;
use futures::{Async, Poll};
#[cfg(feature = "runtime")]
use futures::Future;
use futures::task::{self, Task};
use tokio_io::{AsyncRead, AsyncWrite};
#[cfg(feature = "runtime")]
use crate::client::connect::{Connect, Connected, Destination};
#[cfg(feature = "runtime")]
pub struct Duplex {
inner: Arc<Mutex<DuplexInner>>,
}
#[cfg(feature = "runtime")]
struct DuplexInner {
handle_read_task: Option<Task>,
read: AsyncIo<MockCursor>,
write: AsyncIo<MockCursor>,
}
#[cfg(feature = "runtime")]
impl Duplex {
pub(crate) fn channel() -> (Duplex, DuplexHandle) {
let mut inner = DuplexInner {
handle_read_task: None,
read: AsyncIo::new_buf(Vec::new(), 0),
write: AsyncIo::new_buf(Vec::new(), std::usize::MAX),
};
inner.read.park_tasks(true);
inner.write.park_tasks(true);
let inner = Arc::new(Mutex::new(inner));
let duplex = Duplex {
inner: inner.clone(),
};
let handle = DuplexHandle {
inner: inner,
};
(duplex, handle)
}
}
#[cfg(feature = "runtime")]
impl Read for Duplex {
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
self.inner.lock().unwrap().read.read(buf)
}
}
#[cfg(feature = "runtime")]
impl Write for Duplex {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
let mut inner = self.inner.lock().unwrap();
let ret = inner.write.write(buf);
if let Some(task) = inner.handle_read_task.take() {
trace!("waking DuplexHandle read");
task.notify();
}
ret
}
fn flush(&mut self) -> io::Result<()> {
self.inner.lock().unwrap().write.flush()
}
}
#[cfg(feature = "runtime")]
impl AsyncRead for Duplex {
}
#[cfg(feature = "runtime")]
impl AsyncWrite for Duplex {
fn shutdown(&mut self) -> Poll<(), io::Error> {
Ok(().into())
}
fn write_buf<B: Buf>(&mut self, buf: &mut B) -> Poll<usize, io::Error> {
let mut inner = self.inner.lock().unwrap();
if let Some(task) = inner.handle_read_task.take() {
task.notify();
}
inner.write.write_buf(buf)
}
}
#[cfg(feature = "runtime")]
pub struct DuplexHandle {
inner: Arc<Mutex<DuplexInner>>,
}
#[cfg(feature = "runtime")]
impl DuplexHandle {
pub fn read(&self, buf: &mut [u8]) -> Poll<usize, io::Error> {
let mut inner = self.inner.lock().unwrap();
assert!(buf.len() >= inner.write.inner.len());
if inner.write.inner.is_empty() {
trace!("DuplexHandle read parking");
inner.handle_read_task = Some(task::current());
return Ok(Async::NotReady);
}
inner.write.read(buf).map(Async::Ready)
}
pub fn write(&self, bytes: &[u8]) -> Poll<usize, io::Error> {
let mut inner = self.inner.lock().unwrap();
assert_eq!(inner.read.inner.pos, 0);
assert_eq!(inner.read.inner.vec.len(), 0, "write but read isn't empty");
inner
.read
.inner
.vec
.extend(bytes);
inner.read.block_in(bytes.len());
Ok(Async::Ready(bytes.len()))
}
}
#[cfg(feature = "runtime")]
impl Drop for DuplexHandle {
fn drop(&mut self) {
trace!("mock duplex handle drop");
if !::std::thread::panicking() {
let mut inner = self.inner.lock().unwrap();
inner.read.close();
inner.write.close();
}
}
}
#[cfg(feature = "runtime")]
type BoxedConnectFut = Box<dyn Future<Item=(Duplex, Connected), Error=io::Error> + Send>;
#[cfg(feature = "runtime")]
#[derive(Clone)]
pub struct MockConnector {
mocks: Arc<Mutex<MockedConnections>>,
}
#[cfg(feature = "runtime")]
struct MockedConnections(HashMap<String, Vec<BoxedConnectFut>>);
#[cfg(feature = "runtime")]
impl MockConnector {
pub fn new() -> MockConnector {
MockConnector {
mocks: Arc::new(Mutex::new(MockedConnections(HashMap::new()))),
}
}
pub fn mock(&mut self, key: &str) -> DuplexHandle {
use futures::future;
self.mock_fut(key, future::ok::<_, ()>(()))
}
pub fn mock_fut<F>(&mut self, key: &str, fut: F) -> DuplexHandle
where
F: Future + Send + 'static,
{
self.mock_opts(key, Connected::new(), fut)
}
pub fn mock_opts<F>(&mut self, key: &str, connected: Connected, fut: F) -> DuplexHandle
where
F: Future + Send + 'static,
{
let key = key.to_owned();
let (duplex, handle) = Duplex::channel();
let fut = Box::new(fut.then(move |_| {
trace!("MockConnector mocked fut ready");
Ok((duplex, connected))
}));
self.mocks.lock().unwrap().0.entry(key)
.or_insert(Vec::new())
.push(fut);
handle
}
}
#[cfg(feature = "runtime")]
impl Connect for MockConnector {
type Transport = Duplex;
type Error = io::Error;
type Future = BoxedConnectFut;
fn connect(&self, dst: Destination) -> Self::Future {
trace!("mock connect: {:?}", dst);
let key = format!("{}://{}{}", dst.scheme(), dst.host(), if let Some(port) = dst.port() {
format!(":{}", port)
} else {
"".to_owned()
});
let mut mocks = self.mocks.lock().unwrap();
let mocks = mocks.0.get_mut(&key)
.expect(&format!("unknown mocks uri: {}", key));
assert!(!mocks.is_empty(), "no additional mocks for {}", key);
mocks.remove(0)
}
}
#[cfg(feature = "runtime")]
impl Drop for MockedConnections {
fn drop(&mut self) {
if !::std::thread::panicking() {
for (key, mocks) in self.0.iter() {
assert_eq!(
mocks.len(),
0,
"not all mocked connects for {:?} were used",
key,
);
}
}
}
}
*/