io: move io helpers back into `tokio-io` (#1377)

Utilities are made optional with a feature flag.

1 files changed, 0 insertions, 47 deletions

diff --git a/tokio/tests/io_write.rs b/tokio/tests/io_write.rs
deleted file mode 100644
index 482f21ba..00000000
--- a/tokio/tests/io_write.rs
+++ /dev/null
@@ -1,47 +0,0 @@
-#![deny(warnings, rust_2018_idioms)]
-#![feature(async_await)]
-
-use tokio::io::{AsyncWrite, AsyncWriteExt};
-use tokio_test::assert_ok;
-
-use bytes::BytesMut;
-use std::io;
-use std::pin::Pin;
-use std::task::{Context, Poll};
-
-#[tokio::test]
-async fn write() {
-    struct Wr {
-        buf: BytesMut,
-        cnt: usize,
-    }
-
-    impl AsyncWrite for Wr {
-        fn poll_write(
-            mut self: Pin<&mut Self>,
-            _cx: &mut Context<'_>,
-            buf: &[u8],
-        ) -> Poll<io::Result<usize>> {
-            assert_eq!(self.cnt, 0);
-            self.buf.extend(&buf[0..4]);
-            Ok(4).into()
-        }
-
-        fn poll_flush(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<io::Result<()>> {
-            Ok(()).into()
-        }
-
-        fn poll_shutdown(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<io::Result<()>> {
-            Ok(()).into()
-        }
-    }
-
-    let mut wr = Wr {
-        buf: BytesMut::with_capacity(64),
-        cnt: 0,
-    };
-
-    let n = assert_ok!(wr.write(b"hello world").await);
-    assert_eq!(n, 4);
-    assert_eq!(wr.buf, b"hell"[..]);
-}