From 230441e8ab2fed8a03efbf1ccaabe06e922fc61a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Linus=20F=C3=A4rnstrand?= <faern@faern.net>
Date: Sun, 29 Nov 2020 21:57:14 +0100
Subject: [PATCH] Add IP structural_match tests

---
 library/std/src/net/ip/tests.rs | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/library/std/src/net/ip/tests.rs b/library/std/src/net/ip/tests.rs
index 7956c6a25e49..c29509331d7a 100644
--- a/library/std/src/net/ip/tests.rs
+++ b/library/std/src/net/ip/tests.rs
@@ -944,3 +944,26 @@ fn ip_const() {
     const IS_IP_V6: bool = IP_ADDRESS.is_ipv6();
     assert!(!IS_IP_V6);
 }
+
+#[test]
+fn structural_match() {
+    // test that all IP types can be structurally matched upon
+
+    const IPV4: Ipv4Addr = Ipv4Addr::LOCALHOST;
+    match IPV4 {
+        Ipv4Addr::LOCALHOST => {}
+        _ => unreachable!(),
+    }
+
+    const IPV6: Ipv6Addr = Ipv6Addr::LOCALHOST;
+    match IPV6 {
+        Ipv6Addr::LOCALHOST => {}
+        _ => unreachable!(),
+    }
+
+    const IP: IpAddr = IpAddr::V4(Ipv4Addr::LOCALHOST);
+    match IP {
+        IpAddr::V4(Ipv4Addr::LOCALHOST) => {}
+        _ => unreachable!(),
+    }
+}