Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 29 insertions, 0 deletions

diff --git a/third_party/rust/tokio/tests/io_read_line.rs b/third_party/rust/tokio/tests/io_read_line.rs
new file mode 100644
index 0000000000..57ae37cef3
--- /dev/null
+++ b/third_party/rust/tokio/tests/io_read_line.rs
@@ -0,0 +1,29 @@
+#![warn(rust_2018_idioms)]
+#![cfg(feature = "full")]
+
+use tokio::io::AsyncBufReadExt;
+use tokio_test::assert_ok;
+
+use std::io::Cursor;
+
+#[tokio::test]
+async fn read_line() {
+    let mut buf = String::new();
+    let mut rd = Cursor::new(b"hello\nworld\n\n");
+
+    let n = assert_ok!(rd.read_line(&mut buf).await);
+    assert_eq!(n, 6);
+    assert_eq!(buf, "hello\n");
+    buf.clear();
+    let n = assert_ok!(rd.read_line(&mut buf).await);
+    assert_eq!(n, 6);
+    assert_eq!(buf, "world\n");
+    buf.clear();
+    let n = assert_ok!(rd.read_line(&mut buf).await);
+    assert_eq!(n, 1);
+    assert_eq!(buf, "\n");
+    buf.clear();
+    let n = assert_ok!(rd.read_line(&mut buf).await);
+    assert_eq!(n, 0);
+    assert_eq!(buf, "");
+}