1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/ArrayIteratorPrototype/next/args-mapped-expansion-after-exhaustion.js b/js/src/tests/test262/built-ins/ArrayIteratorPrototype/next/args-mapped-expansion-after-exhaustion.js
new file mode 100644
index 0000000000..def61445ae
--- /dev/null
+++ b/js/src/tests/test262/built-ins/ArrayIteratorPrototype/next/args-mapped-expansion-after-exhaustion.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2014 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-%arrayiteratorprototype%.next
+description: >
+    Once exhausted, iterators for mapped arguments exotic objects should not
+    emit new values added to the object.
+flags: [noStrict]
+features: [Symbol.iterator]
+---*/
+
+(function(a, b, c) {
+  var iterator = arguments[Symbol.iterator]();
+  var result;
+
+  iterator.next();
+  iterator.next();
+  iterator.next();
+  iterator.next();
+
+  arguments[3] = 4;
+  arguments.length = 4;
+
+  result = iterator.next();
+  assert.sameValue(result.value, undefined, 'Exhausted result `value`');
+  assert.sameValue(result.done, true, 'Exhausted result `done` flag');
+}(2, 1, 3));
+
+reportCompare(0, 0);