1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/fromAsync/length.js b/js/src/tests/test262/built-ins/Array/fromAsync/length.js
new file mode 100644
index 0000000000..ccbfdaaf09
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/fromAsync/length.js
@@ -0,0 +1,29 @@
+// |reftest| shell-option(--enable-array-from-async) skip-if(!Array.fromAsync||!xulRuntime.shell) -- 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: Value and property descriptor of Array.fromAsync.length
+info: |
+  Every built-in function object, including constructors, has a *"length"*
+  property whose value is a non-negative integral Number. Unless otherwise
+  specified, this value is equal to the number of required parameters shown in
+  the subclause heading for the function description. Optional parameters and
+  rest parameters are not included in the parameter count.
+
+  Unless otherwise specified, the *"length"* property of a built-in function
+  object has the attributes { [[Writable]]: *false*, [[Enumerable]]: *false*,
+  [[Configurable]]: *true* }.
+includes: [propertyHelper.js]
+features: [Array.fromAsync]
+---*/
+
+verifyProperty(Array.fromAsync, "length", {
+  value: 1,
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
+
+reportCompare(0, 0);