From cf443cb75973ddcfd604f271210ce0c851307313 Mon Sep 17 00:00:00 2001
From: Ralf Jung <post@ralfj.de>
Date: Sat, 27 Jun 2026 12:21:44 +0200
Subject: [PATCH] add smoketest for std::net::hostname

---
 library/std/src/net/ip_addr/tests.rs      |  2 +-
 library/std/src/net/mod.rs                |  2 +-
 library/std/src/net/socket_addr/tests.rs  |  2 +-
 library/std/src/net/tcp/tests.rs          |  2 +-
 library/std/src/net/{test.rs => tests.rs} | 10 ++++++++++
 library/std/src/net/udp/tests.rs          |  2 +-
 library/std/src/os/net/linux_ext/tests.rs |  4 ++--
 7 files changed, 17 insertions(+), 7 deletions(-)
 rename library/std/src/net/{test.rs => tests.rs} (83%)

diff --git a/library/std/src/net/ip_addr/tests.rs b/library/std/src/net/ip_addr/tests.rs
index 7bed6f8a0f523..666146319d161 100644
--- a/library/std/src/net/ip_addr/tests.rs
+++ b/library/std/src/net/ip_addr/tests.rs
@@ -1,5 +1,5 @@
 use crate::net::Ipv4Addr;
-use crate::net::test::{sa4, tsa};
+use crate::net::tests::{sa4, tsa};
 
 #[test]
 fn to_socket_addr_socketaddr() {
diff --git a/library/std/src/net/mod.rs b/library/std/src/net/mod.rs
index 3e4447eb33f2a..2a8b0f8ca9aad 100644
--- a/library/std/src/net/mod.rs
+++ b/library/std/src/net/mod.rs
@@ -43,7 +43,7 @@ mod ip_addr;
 mod socket_addr;
 mod tcp;
 #[cfg(test)]
-pub(crate) mod test;
+pub(crate) mod tests;
 mod udp;
 
 /// Possible values which can be passed to the [`TcpStream::shutdown`] method.
diff --git a/library/std/src/net/socket_addr/tests.rs b/library/std/src/net/socket_addr/tests.rs
index 6a065cfba2105..2f3e3add5c22d 100644
--- a/library/std/src/net/socket_addr/tests.rs
+++ b/library/std/src/net/socket_addr/tests.rs
@@ -1,4 +1,4 @@
-use crate::net::test::{sa4, sa6, tsa};
+use crate::net::tests::{sa4, sa6, tsa};
 use crate::net::*;
 
 #[test]
diff --git a/library/std/src/net/tcp/tests.rs b/library/std/src/net/tcp/tests.rs
index 8a3a7ee7c5cba..88f6af0e33df7 100644
--- a/library/std/src/net/tcp/tests.rs
+++ b/library/std/src/net/tcp/tests.rs
@@ -3,7 +3,7 @@ use rand::Rng;
 use crate::io::prelude::*;
 use crate::io::{BorrowedBuf, ErrorKind, IoSlice, IoSliceMut};
 use crate::mem::MaybeUninit;
-use crate::net::test::{LOCALHOST_IP4, LOCALHOST_IP6};
+use crate::net::tests::{LOCALHOST_IP4, LOCALHOST_IP6};
 use crate::net::*;
 use crate::sync::mpsc::channel;
 use crate::time::{Duration, Instant};
diff --git a/library/std/src/net/test.rs b/library/std/src/net/tests.rs
similarity index 83%
rename from library/std/src/net/test.rs
rename to library/std/src/net/tests.rs
index 5002bb5c8e083..3f5d22a910005 100644
--- a/library/std/src/net/test.rs
+++ b/library/std/src/net/tests.rs
@@ -36,3 +36,13 @@ pub fn compare_ignore_zoneid(a: &SocketAddr, b: &SocketAddr) -> bool {
         _ => a == b,
     }
 }
+
+#[test]
+fn hostname_smoketest() {
+    // Just a smoke test to ensure it can be called.
+    let name = crate::net::hostname();
+    if cfg!(windows) || cfg!(unix) {
+        // At least on Windows and Unix, this should succeed.
+        name.unwrap();
+    }
+}
diff --git a/library/std/src/net/udp/tests.rs b/library/std/src/net/udp/tests.rs
index ede0240fbda57..9e9d3bf77e50b 100644
--- a/library/std/src/net/udp/tests.rs
+++ b/library/std/src/net/udp/tests.rs
@@ -1,5 +1,5 @@
 use crate::io::ErrorKind;
-use crate::net::test::{LOCALHOST_IP4, LOCALHOST_IP6, compare_ignore_zoneid};
+use crate::net::tests::{LOCALHOST_IP4, LOCALHOST_IP6, compare_ignore_zoneid};
 use crate::net::*;
 use crate::sync::mpsc::channel;
 use crate::thread;
diff --git a/library/std/src/os/net/linux_ext/tests.rs b/library/std/src/os/net/linux_ext/tests.rs
index 02839ee6a2aad..a63524e63b6d8 100644
--- a/library/std/src/os/net/linux_ext/tests.rs
+++ b/library/std/src/os/net/linux_ext/tests.rs
@@ -1,6 +1,6 @@
 #[test]
 fn quickack() {
-    use crate::net::test::LOCALHOST_IP4;
+    use crate::net::tests::LOCALHOST_IP4;
     use crate::net::{TcpListener, TcpStream};
     use crate::os::net::linux_ext::tcp::TcpStreamExt;
 
@@ -29,7 +29,7 @@ fn quickack() {
 #[test]
 #[cfg(target_os = "linux")]
 fn deferaccept() {
-    use crate::net::test::LOCALHOST_IP4;
+    use crate::net::tests::LOCALHOST_IP4;
     use crate::net::{TcpListener, TcpStream};
     use crate::os::net::linux_ext::tcp::TcpStreamExt;
     use crate::time::Duration;