1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/fromAsync/asyncitems-object-not-arraylike.js b/js/src/tests/test262/built-ins/Array/fromAsync/asyncitems-object-not-arraylike.js
new file mode 100644
index 0000000000..62f3dd27b4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/fromAsync/asyncitems-object-not-arraylike.js
@@ -0,0 +1,24 @@
+// |reftest| async
+// Copyright (C) 2023 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-array.fromasync
+description: >
+  Treats an asyncItems object that isn't an array-like as a 0-length array-like
+info: |
+  3.k.iii. Let _len_ be ? LengthOfArrayLike(_arrayLike_).
+features: [Array.fromAsync]
+flags: [async]
+includes: [asyncHelpers.js, compareArray.js]
+---*/
+
+asyncTest(async function () {
+  const notArrayLike = Object.create(null);
+  notArrayLike[0] = 0;
+  notArrayLike[1] = 1;
+  notArrayLike[2] = 2;
+
+  const array = await Array.fromAsync(notArrayLike);
+  assert.compareArray(array, [], "non-array-like object is treated as 0-length array-like");
+});