1 files changed, 44 insertions, 0 deletions
diff --git a/library/std/src/fs/tests.rs b/library/std/src/fs/tests.rs
index d74f0f00e46..736b495343e 100644
--- a/library/std/src/fs/tests.rs
+++ b/library/std/src/fs/tests.rs
@@ -1707,3 +1707,47 @@ fn test_file_times() {
         assert_eq!(metadata.created().unwrap(), created);
     }
 }
+
+#[test]
+#[cfg(windows)]
+fn windows_unix_socket_exists() {
+    use crate::sys::{c, net};
+    use crate::{mem, ptr};
+
+    let tmp = tmpdir();
+    let socket_path = tmp.join("socket");
+
+    // std doesn't currently support Unix sockets on Windows so manually create one here.
+    net::init();
+    unsafe {
+        let socket = c::WSASocketW(
+            c::AF_UNIX as i32,
+            c::SOCK_STREAM,
+            0,
+            ptr::null_mut(),
+            0,
+            c::WSA_FLAG_OVERLAPPED | c::WSA_FLAG_NO_HANDLE_INHERIT,
+        );
+        // AF_UNIX is not supported on earlier versions of Windows,
+        // so skip this test if it's unsupported and we're not in CI.
+        if socket == c::INVALID_SOCKET {
+            let error = c::WSAGetLastError();
+            if env::var_os("CI").is_none() && error == c::WSAEAFNOSUPPORT {
+                return;
+            } else {
+                panic!("Creating AF_UNIX socket failed (OS error {error})");
+            }
+        }
+        let mut addr = c::SOCKADDR_UN { sun_family: c::AF_UNIX, sun_path: mem::zeroed() };
+        let bytes = socket_path.as_os_str().as_encoded_bytes();
+        addr.sun_path[..bytes.len()].copy_from_slice(bytes);
+        let len = mem::size_of_val(&addr) as i32;
+        let result = c::bind(socket, ptr::addr_of!(addr).cast::<c::SOCKADDR>(), len);
+        c::closesocket(socket);
+        assert_eq!(result, 0);
+    }
+    // Make sure all ways of testing a file exist work for a Unix socket.
+    assert_eq!(socket_path.exists(), true);
+    assert_eq!(socket_path.try_exists().unwrap(), true);
+    assert_eq!(socket_path.metadata().is_ok(), true);
+}