From 54c3f8e27fa1f38a3e2d65c2b297c415062d01c8 Mon Sep 17 00:00:00 2001
From: Ryan Dahl <ry@tinyclouds.org>
Date: Wed, 10 Jun 2020 11:26:28 -0400
Subject: fix udp BorrowMutError (#6221)

---
 cli/tests/unit/net_test.ts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'cli/tests')

diff --git a/cli/tests/unit/net_test.ts b/cli/tests/unit/net_test.ts
index 4fd253a6c..cda5a536e 100644
--- a/cli/tests/unit/net_test.ts
+++ b/cli/tests/unit/net_test.ts
@@ -254,6 +254,21 @@ unitTest(
   }
 );
 
+unitTest(
+  { ignore: Deno.build.os === "windows", perms: { net: true } },
+  async function netUdpBorrowMutError(): Promise<void> {
+    const socket = Deno.listenDatagram({
+      port: 4501,
+      transport: "udp",
+    });
+    // Panic happened on second send: BorrowMutError
+    const a = socket.send(new Uint8Array(), socket.addr);
+    const b = socket.send(new Uint8Array(), socket.addr);
+    await Promise.all([a, b]);
+    socket.close();
+  }
+);
+
 unitTest(
   { ignore: Deno.build.os === "windows", perms: { read: true, write: true } },
   async function netUnixPacketSendReceive(): Promise<void> {
-- 
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