1 files changed, 22 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/fromAsync/asyncitems-function.js b/js/src/tests/test262/built-ins/Array/fromAsync/asyncitems-function.js
new file mode 100644
index 0000000000..1f7179b88b
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+++ b/js/src/tests/test262/built-ins/Array/fromAsync/asyncitems-function.js
@@ -0,0 +1,22 @@
+// |reftest| shell-option(--enable-array-from-async) skip-if(!Array.fromAsync||!xulRuntime.shell) async -- Array.fromAsync is not enabled unconditionally, requires shell-options
+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-array.fromasync
+description: >
+  Array.fromAsync treats a function as an array-like, reading elements up to fn.length
+includes: [asyncHelpers.js, compareArray.js]
+flags: [async]
+features: [Array.fromAsync]
+---*/
+
+asyncTest(async function () {
+  const fn = function(a, b) {};
+  fn[0] = 1;
+  fn[1] = 2;
+  fn[2] = 3;
+
+  const result = await Array.fromAsync(fn);
+  assert.compareArray(result, [1, 2]);
+});