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use futures::sync::mpsc;
use futures::Async::*;
use std::io::Cursor;
use tokio_buf::{util, BufStream};
use tokio_mock_task::MockTask;
mod support;
type Buf = Cursor<&'static [u8]>;
#[test]
fn empty_stream() {
let (_, rx) = mpsc::unbounded::<Buf>();
let mut bs = util::stream(rx);
assert_none!(bs.poll_buf());
}
#[test]
fn full_stream() {
let (tx, rx) = mpsc::unbounded();
let mut bs = util::stream(rx);
let mut task = MockTask::new();
tx.unbounded_send(buf(b"one")).unwrap();
assert_buf_eq!(bs.poll_buf(), "one");
task.enter(|| assert_not_ready!(bs.poll_buf()));
tx.unbounded_send(buf(b"two")).unwrap();
assert!(task.is_notified());
assert_buf_eq!(bs.poll_buf(), "two");
task.enter(|| assert_not_ready!(bs.poll_buf()));
drop(tx);
assert!(task.is_notified());
assert_none!(bs.poll_buf());
}
fn buf(data: &'static [u8]) -> Buf {
Cursor::new(data)
}
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