diff -r 000000000000 -r 6474c204b198 js/src/tests/ecma/Number/15.7.3.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/ecma/Number/15.7.3.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,35 @@
+/* -*- 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:          15.7.3.js
+   15.7.3  Properties of the Number Constructor
+
+   Description:        The value of the internal [[Prototype]] property
+   of the Number constructor is the Function prototype
+   object.  The Number constructor also has the internal
+   [[Call]] and [[Construct]] properties, and the length
+   property.
+
+   Other properties are in subsequent tests.
+
+   Author:             christine@netscape.com
+   Date:               29 september 1997
+*/
+
+var SECTION = "15.7.3";
+var VERSION = "ECMA_2";
+startTest();
+var TITLE   = "Properties of the Number Constructor";
+
+writeHeaderToLog( SECTION + " "+ TITLE);
+
+new TestCase(SECTION,
+	     "Number.length",     
+	     1,                 
+	     Number.length );
+
+test();