1 files changed, 23 insertions, 0 deletions
diff --git a/js/src/tests/non262/Iterator/prototype/map/mutate-iterator-after-done.js b/js/src/tests/non262/Iterator/prototype/map/mutate-iterator-after-done.js
new file mode 100644
index 0000000000..b38158d73a
--- /dev/null
+++ b/js/src/tests/non262/Iterator/prototype/map/mutate-iterator-after-done.js
@@ -0,0 +1,23 @@
+// |reftest| skip-if(!this.hasOwnProperty('Iterator'))
+//
+
+/*---
+esid: pending
+description: Mutate an iterator after it has been mapped and returned done.
+info:
+features: [iterator-helpers]
+---*/
+
+const array = [1, 2, 3];
+const iterator = [1, 2, 3].values().map(x => x * 2);
+
+assertEq(iterator.next().value, 2);
+assertEq(iterator.next().value, 4);
+assertEq(iterator.next().value, 6);
+assertEq(iterator.next().done, true);
+
+array.push(4);
+assertEq(iterator.next().done, true);
+
+if (typeof reportCompare == 'function')
+  reportCompare(0, 0);