Cleanup sys module to match house style

1 files changed, 19 insertions, 0 deletions

diff --git a/library/std/src/pipe/tests.rs b/library/std/src/pipe/tests.rs
new file mode 100644
index 00000000000..9c38e106787
--- /dev/null
+++ b/library/std/src/pipe/tests.rs
@@ -0,0 +1,19 @@
+use crate::io::{Read, Write};
+use crate::pipe::pipe;
+
+#[test]
+#[cfg(all(windows, unix, not(miri)))]
+fn pipe_creation_clone_and_rw() {
+    let (rx, tx) = pipe().unwrap();
+
+    tx.try_clone().unwrap().write_all(b"12345").unwrap();
+    drop(tx);
+
+    let mut rx2 = rx.try_clone().unwrap();
+    drop(rx);
+
+    let mut s = String::new();
+    rx2.read_to_string(&mut s).unwrap();
+    drop(rx2);
+    assert_eq!(s, "12345");
+}