Implement ES6 Array.of()

test/mjsunit/es6/array-of-4.js

Index: test/mjsunit/es6/array-of-4.js
diff --git a/test/mjsunit/es6/array-of-4.js b/test/mjsunit/es6/array-of-4.js
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+++ b/test/mjsunit/es6/array-of-4.js
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+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Based on: https://hg.mozilla.org/mozilla-central/file/d0c3168c3c47/js/src/jit-test/tests/collections/Array-of-4.js
+
+// Flags: --harmony-arrays
+
+
+// Array.of does not trigger prototype setters.
+
+// (It defines elements rather than assigning to them.)
+
+var status = "pass";
+Object.defineProperty(Array.prototype, "0", {set: function(v) {status = "FAIL 1"}});
+assertEquals(Array.of(1)[0], 1);
+assertEquals(status, "pass");
+
+function Bag() {}
+Bag.of = Array.of;
+Object.defineProperty(Bag.prototype, "0", {set: function(v) {status = "FAIL 2"}});
+assertEquals(Bag.of(1)[0], 1);
+assertEquals(status, "pass");