1 files changed, 23 insertions, 0 deletions
diff --git a/js/src/tests/non262/Iterator/prototype/map/interleaved-map-calls.js b/js/src/tests/non262/Iterator/prototype/map/interleaved-map-calls.js
new file mode 100644
index 0000000000..3253e06192
--- /dev/null
+++ b/js/src/tests/non262/Iterator/prototype/map/interleaved-map-calls.js
@@ -0,0 +1,23 @@
+// |reftest| skip-if(!this.hasOwnProperty('Iterator'))
+//
+
+/*---
+esid: pending
+description: Interleaved %Iterator.prototype%.map calls on the same iterator.
+info:
+features: [iterator-helpers]
+---*/
+
+const iterator = [1, 2, 3].values();
+const mapped1 = iterator.map(x => x);
+const mapped2 = iterator.map(x => 0);
+
+assertEq(mapped1.next().value, 1);
+assertEq(mapped2.next().value, 0);
+assertEq(mapped1.next().value, 3);
+
+assertEq(mapped1.next().done, true);
+assertEq(mapped2.next().done, true);
+
+if (typeof reportCompare == 'function')
+  reportCompare(0, 0);