1 files changed, 56 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Promise/allSettled/reject-element-function-multiple-calls.js b/js/src/tests/test262/built-ins/Promise/allSettled/reject-element-function-multiple-calls.js
new file mode 100644
index 0000000000..2cbc89007d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Promise/allSettled/reject-element-function-multiple-calls.js
@@ -0,0 +1,56 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-performpromiseallsettled
+description: >
+  Cannot tamper with remainingElementsCount when Promise.allSettled reject element function is called multiple times.
+info: |
+  Runtime Semantics: PerformPromiseAllSettled ( iteratorRecord, constructor, resultCapability, )
+
+  If alreadyCalled.[[Value]] is true, return undefined.
+
+features: [Promise.allSettled]
+---*/
+
+let rejectCallCount = 0;
+let returnValue = {};
+let error = new Test262Error();
+
+function Constructor(executor) {
+  function reject(value) {
+    assert.sameValue(value, error);
+    rejectCallCount += 1;
+    return returnValue;
+  }
+  executor(() => {throw error}, reject);
+}
+Constructor.resolve = function(v) {
+  return v;
+};
+Constructor.reject = function(v) {
+  return v;
+};
+
+let pOnRejected;
+
+let p = {
+  then(onResolved, onRejected) {
+    pOnRejected = onRejected;
+    onResolved();
+  }
+};
+
+assert.sameValue(rejectCallCount, 0, 'rejectCallCount before call to allSettled()');
+
+Promise.allSettled.call(Constructor, [p]);
+
+assert.sameValue(rejectCallCount, 1, 'rejectCallCount after call to allSettled()');
+assert.sameValue(pOnRejected(), undefined);
+assert.sameValue(rejectCallCount, 1, 'rejectCallCount after call to pOnRejected()');
+pOnRejected();
+assert.sameValue(rejectCallCount, 1, 'rejectCallCount after call to pOnRejected()');
+
+
+
+reportCompare(0, 0);