1 files changed, 34 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/fromAsync/this-constructor-with-bad-length-setter.js b/js/src/tests/test262/built-ins/Array/fromAsync/this-constructor-with-bad-length-setter.js
new file mode 100644
index 0000000000..b3cf982af7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/fromAsync/this-constructor-with-bad-length-setter.js
@@ -0,0 +1,34 @@
+// |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: >
+  Rejects the promise if setting the length fails on an instance of a custom
+  this-value
+info: |
+  3.j.ii.4.a. Perform ? Set(_A_, *"length"*, 𝔽(_k_), *true*).
+  ...
+  3.k.viii. Perform ? Set(_A_, *"length"*, 𝔽(_len_), *true*)
+includes: [asyncHelpers.js]
+flags: [async]
+features: [Array.fromAsync]
+---*/
+
+asyncTest(async function () {
+  class MyArray {
+    set length(v) {
+      throw new Test262Error("setter of length property throws")
+    }
+  }
+
+  await assert.throwsAsync(Test262Error, () => Array.fromAsync.call(MyArray, [0, 1, 2]), "Promise rejected if setting length fails");
+
+  await assert.throwsAsync(Test262Error, () => Array.fromAsync.call(MyArray, {
+    length: 3,
+    0: 0,
+    1: 1,
+    2: 2
+  }), "Promise rejected if setting length from array-like fails");
+});