diff -r 000000000000 -r 6474c204b198 js/src/tests/ecma/Date/15.9.5.6.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/ecma/Date/15.9.5.6.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,70 @@
+/* -*- 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:          15.9.5.6.js
+   ECMA Section:       15.9.5.6
+   Description:        Date.prototype.getFullYear
+
+   1.   Let t be this time value.
+   2.   If t is NaN, return NaN.
+   3.   Return YearFromTime(LocalTime(t)).
+   Author:             christine@netscape.com
+   Date:               12 november 1997
+*/
+
+var SECTION = "15.9.5.6";
+var VERSION = "ECMA_1";
+startTest();
+var TITLE   = "Date.prototype.getFullYear()";
+
+writeHeaderToLog( SECTION + " "+ TITLE);
+
+addTestCase( TIME_NOW );
+addTestCase( TIME_0000 );
+addTestCase( TIME_1970 );
+addTestCase( TIME_1900 );
+addTestCase( TIME_2000 );
+addTestCase( UTC_FEB_29_2000 );
+addTestCase( UTC_JAN_1_2005 );
+
+new TestCase( SECTION,
+	      "(new Date(NaN)).getFullYear()",
+	      NaN,
+	      (new Date(NaN)).getFullYear() );
+
+new TestCase( SECTION,
+	      "Date.prototype.getFullYear.length",
+	      0,
+	      Date.prototype.getFullYear.length );
+
+test();
+function addTestCase( t ) {
+  new TestCase( SECTION,
+		"(new Date("+t+")).getFullYear()",
+		YearFromTime(LocalTime(t)),
+		(new Date(t)).getFullYear() );
+
+  new TestCase( SECTION,
+		"(new Date("+(t+1)+")).getFullYear()",
+		YearFromTime(LocalTime(t+1)),
+		(new Date(t+1)).getFullYear() );
+
+  new TestCase( SECTION,
+		"(new Date("+(t-1)+")).getFullYear()",
+		YearFromTime(LocalTime(t-1)),
+		(new Date(t-1)).getFullYear() );
+
+  new TestCase( SECTION,
+		"(new Date("+(t-TZ_ADJUST)+")).getFullYear()",
+		YearFromTime(LocalTime(t-TZ_ADJUST)),
+		(new Date(t-TZ_ADJUST)).getFullYear() );
+
+  new TestCase( SECTION,
+		"(new Date("+(t+TZ_ADJUST)+")).getFullYear()",
+		YearFromTime(LocalTime(t+TZ_ADJUST)),
+		(new Date(t+TZ_ADJUST)).getFullYear() );
+}