1 files changed, 16 insertions, 0 deletions
diff --git a/tests/unit/serve_test.ts b/tests/unit/serve_test.ts
index fde6c7bee..19a8ccad1 100644
--- a/tests/unit/serve_test.ts
+++ b/tests/unit/serve_test.ts
@@ -4191,3 +4191,19 @@ Deno.test({
     'Operation `"op_net_listen_unix"` not supported on non-unix platforms.',
   );
 });
+
+Deno.test({
+  name: "onListen callback gets 0.0.0.0 hostname as is",
+}, async () => {
+  const { promise, resolve } = Promise.withResolvers<{ hostname: string }>();
+
+  const server = Deno.serve({
+    handler: (_) => new Response("ok"),
+    hostname: "0.0.0.0",
+    port: 0,
+    onListen: resolve,
+  });
+  const { hostname } = await promise;
+  assertEquals(hostname, "0.0.0.0");
+  await server.shutdown();
+});