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

Utilities are made optional with a feature flag.

1 files changed, 0 insertions, 51 deletions

diff --git a/tokio/tests/io_write_all.rs b/tokio/tests/io_write_all.rs
deleted file mode 100644
index b12e0f81..00000000
--- a/tokio/tests/io_write_all.rs
+++ /dev/null
@@ -1,51 +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::cmp;
-use std::io;
-use std::pin::Pin;
-use std::task::{Context, Poll};
-
-#[tokio::test]
-async fn write_all() {
-    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>> {
-            let n = cmp::min(4, buf.len());
-            let buf = &buf[0..n];
-
-            self.cnt += 1;
-            self.buf.extend(buf);
-            Ok(buf.len()).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,
-    };
-
-    assert_ok!(wr.write_all(b"hello world").await);
-    assert_eq!(wr.buf, b"hello world"[..]);
-    assert_eq!(wr.cnt, 3);
-}