fix(napi): improve napi_is_detached_arraybuffer (#17498)

1 files changed, 13 insertions, 1 deletions

diff --git a/test_napi/arraybuffer_test.js b/test_napi/arraybuffer_test.js
index c08ffc7d6..3e4e3c6c1 100644
--- a/test_napi/arraybuffer_test.js
+++ b/test_napi/arraybuffer_test.js
@@ -1,6 +1,6 @@
 // Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
 
-import { assertEquals, loadTestLibrary } from "./common.js";
+import { assert, assertEquals, loadTestLibrary } from "./common.js";
 
 const typedarray = loadTestLibrary();
 
@@ -10,3 +10,15 @@ Deno.test("napi arraybuffer detach", function () {
   typedarray.test_detached(buf);
   assertEquals(buf.byteLength, 0);
 });
+
+Deno.test("napi arraybuffer is detached", function () {
+  const buf = new ArrayBuffer(5);
+  assertEquals(buf.byteLength, 5);
+  assert(!typedarray.is_detached(buf));
+  typedarray.test_detached(buf);
+  assert(typedarray.is_detached(buf));
+
+  [2, {}, "foo", null, undefined, new Uint8Array(10)].forEach((value) => {
+    assert(!typedarray.is_detached(value));
+  });
+});