1 files changed, 30 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Promise/allSettled/resolve-thenable.js b/js/src/tests/test262/built-ins/Promise/allSettled/resolve-thenable.js
new file mode 100644
index 0000000000..008e9525e9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Promise/allSettled/resolve-thenable.js
@@ -0,0 +1,30 @@
+// |reftest| async
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: Resolving with a thenable object value
+esid: sec-promise.allsettled
+info: |
+  Let promiseCapability be NewPromiseCapability(C).
+flags: [async]
+features: [Promise.allSettled]
+---*/
+
+var value = {};
+var promise;
+
+try {
+  Array.prototype.then = function(resolve) {
+    resolve(value);
+  };
+
+  promise = Promise.allSettled([]);
+} finally {
+  delete Array.prototype.then;
+}
+
+promise.then(function(val) {
+  assert.sameValue(val, value);
+}, function() {
+  $DONE('The promise should not be rejected.');
+}).then($DONE, $DONE);