1 files changed, 50 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for-of/iterator-close-via-throw.js b/js/src/tests/test262/language/statements/for-of/iterator-close-via-throw.js
new file mode 100644
index 0000000000..675d73b01e
--- /dev/null
+++ b/js/src/tests/test262/language/statements/for-of/iterator-close-via-throw.js
@@ -0,0 +1,50 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 13.6.4.13
+description: >
+    Iterators should be closed via their `return` method when iteration is
+    interrupted via a `throw` statement.
+features: [Symbol.iterator]
+---*/
+
+var startedCount = 0;
+var returnCount = 0;
+var iterationCount = 0;
+var iterable = {};
+
+iterable[Symbol.iterator] = function() {
+  return {
+    next: function() {
+      startedCount += 1;
+      return { done: false, value: null };
+    },
+    return: function() {
+      returnCount += 1;
+      return {};
+    }
+  };
+};
+
+try {
+  for (var x of iterable) {
+    assert.sameValue(
+      startedCount, 1, 'Value is retrieved'
+    );
+    assert.sameValue(
+      returnCount, 0, 'Iterator is not closed'
+    );
+    iterationCount += 1;
+    throw 0;
+  }
+} catch (err) {}
+
+assert.sameValue(
+  startedCount, 1, 'Iterator does not restart following interruption'
+);
+assert.sameValue(iterationCount, 1, 'A single iteration occurs');
+assert.sameValue(
+  returnCount, 1, 'Iterator is closed after `throw` statement'
+);
+
+reportCompare(0, 0);