1 files changed, 36 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/fromAsync/returns-promise.js b/js/src/tests/test262/built-ins/Array/fromAsync/returns-promise.js
new file mode 100644
index 0000000000..a8b456d66e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/fromAsync/returns-promise.js
@@ -0,0 +1,36 @@
+// |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: Array.fromAsync returns a Promise
+info: |
+  5. Return _promiseCapability_.[[Promise]].
+flags: [async]
+includes: [asyncHelpers.js]
+features: [Array.fromAsync]
+---*/
+
+asyncTest(async function () {
+  let p = Array.fromAsync([0, 1, 2]);
+
+  assert(p instanceof Promise, "Array.fromAsync returns a Promise");
+  assert.sameValue(
+    Object.getPrototypeOf(p),
+    Promise.prototype,
+    "Array.fromAsync returns an object with prototype Promise.prototype"
+  );
+
+  p = Array.fromAsync([0, 1, 2], () => {
+    throw new Test262Error("this will make the Promise reject");
+  })
+  assert(p instanceof Promise, "Array.fromAsync returns a Promise even on error");
+  assert.sameValue(
+    Object.getPrototypeOf(p),
+    Promise.prototype,
+    "Array.fromAsync returns an object with prototype Promise.prototype even on error"
+  );
+
+  await assert.throwsAsync(Test262Error, () => p, "Prevent unhandled rejection");
+});