From 96783625a0a2906d70690a5d76f83b1ccc028434 Mon Sep 17 00:00:00 2001
From: Mara Bos <m-ou.se@m-ou.se>
Date: Sun, 21 Mar 2021 20:22:26 +0100
Subject: [PATCH] Add test for io::Error::new_const.

---
 library/std/src/io/error/tests.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/library/std/src/io/error/tests.rs b/library/std/src/io/error/tests.rs
index eb051c33f0929..5098a46313de3 100644
--- a/library/std/src/io/error/tests.rs
+++ b/library/std/src/io/error/tests.rs
@@ -57,3 +57,13 @@ fn test_downcasting() {
     let extracted = err.into_inner().unwrap();
     extracted.downcast::<TestError>().unwrap();
 }
+
+#[test]
+fn test_const() {
+    const E: Error = Error::new_const(ErrorKind::NotFound, &"hello");
+
+    assert_eq!(E.kind(), ErrorKind::NotFound);
+    assert_eq!(E.to_string(), "hello");
+    assert!(format!("{:?}", E).contains("\"hello\""));
+    assert!(format!("{:?}", E).contains("NotFound"));
+}