diff -r 000000000000 -r 6474c204b198 js/src/tests/ecma/extensions/15.9.5.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/ecma/extensions/15.9.5.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,42 @@
+/* -*- 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:          15.9.5.js
+   ECMA Section:       15.9.5 Properties of the Date prototype object
+   Description:
+
+   The Date prototype object is itself a Date object (its [[Class]] is
+   "Date") whose value is NaN.
+
+   The value of the internal [[Prototype]] property of the Date prototype
+   object is the Object prototype object (15.2.3.1).
+
+   In following descriptions of functions that are properties of the Date
+   prototype object, the phrase "this Date object" refers to the object that
+   is the this value for the invocation of the function; it is an error if
+   this does not refer to an object for which the value of the internal
+   [[Class]] property is "Date". Also, the phrase "this time value" refers
+   to the number value for the time represented by this Date object, that is,
+   the value of the internal [[Value]] property of this Date object.
+
+   Author:             christine@netscape.com
+   Date:               12 november 1997
+*/
+
+var SECTION = "15.9.5";
+var VERSION = "ECMA_1";
+startTest();
+var TITLE   = "Properties of the Date Prototype Object";
+
+writeHeaderToLog( SECTION + " "+ TITLE);
+
+new TestCase( SECTION,
+	      "Date.prototype.__proto__ == Object.prototype",
+	      true,
+	      Date.prototype.__proto__ == Object.prototype );
+test();
+