1 files changed, 36 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/ArrayIteratorPrototype/next/iteration-mutable.js b/js/src/tests/test262/built-ins/ArrayIteratorPrototype/next/iteration-mutable.js
new file mode 100644
index 0000000000..4e1160e4c3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/ArrayIteratorPrototype/next/iteration-mutable.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2013 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: >
+    When an item is added to the array after the iterator is created but
+    before the iterator is "done" (as defined by 22.1.5.2.1), the new item
+    should be accessible via iteration. When an item is added to the array
+    after the iterator is "done", the new item should not be accessible via
+    iteration.
+es6id: 22.1.3.30
+features: [Symbol.iterator]
+---*/
+
+var array = [];
+var iterator = array[Symbol.iterator]();
+var result;
+
+array.push('a');
+
+result = iterator.next();
+assert.sameValue(result.done, false, 'First result `done` flag');
+assert.sameValue(result.value, 'a', 'First result `value`');
+
+result = iterator.next();
+assert.sameValue(result.done, true, 'Exhausted result `done` flag');
+assert.sameValue(result.value, undefined, 'Exhausted result `value`');
+
+array.push('b');
+
+result = iterator.next();
+assert.sameValue(result.done, true, 'Exhausted result `done` flag (after push)');
+assert.sameValue(result.value, undefined, 'Exhausted result `value (after push)');
+
+reportCompare(0, 0);