diff -r 000000000000 -r 6474c204b198 js/src/tests/ecma/extensions/15-1.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/ecma/extensions/15-1.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,60 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+
+/**
+   File Name:          15.js
+   ECMA Section:       15 Native ECMAScript Objects
+   Description:        Every built-in prototype object has the Object prototype
+   object, which is the value of the expression
+   Object.prototype (15.2.3.1) as the value of its internal
+   [[Prototype]] property, except the Object prototype
+   object itself.
+
+   Every native object associated with a program-created
+   function also has the Object prototype object as the
+   value of its internal [[Prototype]] property.
+
+   Author:             christine@netscape.com
+   Date:               28 october 1997
+
+*/
+var SECTION = "15-1";
+var VERSION = "ECMA_1";
+startTest();
+var TITLE   = "Native ECMAScript Objects";
+
+writeHeaderToLog( SECTION + " "+ TITLE);
+/*
+  new TestCase( SECTION,  "Function.prototype.__proto__", Object.prototype,   Function.prototype.__proto__ );
+  new TestCase( SECTION,  "Array.prototype.__proto__",    Object.prototype,   Array.prototype.__proto__ );
+  new TestCase( SECTION,  "String.prototype.__proto__",   Object.prototype,   String.prototype.__proto__ );
+  new TestCase( SECTION,  "Boolean.prototype.__proto__",  Object.prototype,   Boolean.prototype.__proto__ );
+  new TestCase( SECTION,  "Number.prototype.__proto__",   Object.prototype,   Number.prototype.__proto__ );
+//    new TestCase( SECTION,  "Math.prototype.__proto__",     Object.prototype,   Math.prototype.__proto__ );
+new TestCase( SECTION,  "Date.prototype.__proto__",     Object.prototype,   Date.prototype.__proto__ );
+new TestCase( SECTION,  "TestCase.prototype.__proto__", Object.prototype,   TestCase.prototype.__proto__ );
+
+new TestCase( SECTION,  "MyObject.prototype.__proto__", Object.prototype,   MyObject.prototype.__proto__ );
+*/
+new TestCase( SECTION,  "Function.prototype.__proto__ == Object.prototype", true,   Function.prototype.__proto__ == Object.prototype );
+new TestCase( SECTION,  "Array.prototype.__proto__ == Object.prototype",    true,   Array.prototype.__proto__ == Object.prototype );
+new TestCase( SECTION,  "String.prototype.__proto__ == Object.prototype",   true,   String.prototype.__proto__ == Object.prototype );
+new TestCase( SECTION,  "Boolean.prototype.__proto__ == Object.prototype",  true,   Boolean.prototype.__proto__ == Object.prototype );
+new TestCase( SECTION,  "Number.prototype.__proto__ == Object.prototype",   true,   Number.prototype.__proto__ == Object.prototype );
+//    new TestCase( SECTION,  "Math.prototype.__proto__ == Object.prototype",     true,   Math.prototype.__proto__ == Object.prototype );
+new TestCase( SECTION,  "Date.prototype.__proto__ == Object.prototype",     true,   Date.prototype.__proto__ == Object.prototype );
+new TestCase( SECTION,  "TestCase.prototype.__proto__ == Object.prototype", true,   TestCase.prototype.__proto__ == Object.prototype );
+
+new TestCase( SECTION,  "MyObject.prototype.__proto__ == Object.prototype", true,   MyObject.prototype.__proto__ == Object.prototype );
+
+
+test();
+
+
+function MyObject( value ) {
+  this.value = value;
+  this.valueOf = new Function( "return this.value" );
+}