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diff --git a/js/src/tests/js1_3/extensions/proto_5.js b/js/src/tests/js1_3/extensions/proto_5.js
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+/* -*- tab-width: 2; indent-tabs-mode: nil; js-indent-level: 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:          proto_5.js
+   Section:
+   Description:        Logical OR || in Constructors
+
+   This tests Object Hierarchy and Inheritance, as described in the document
+   Object Hierarchy and Inheritance in JavaScript, last modified on 12/18/97
+   15:19:34 on http://devedge.netscape.com/.  Current URL:
+   http://devedge.netscape.com/docs/manuals/communicator/jsobj/contents.htm
+
+   This tests the syntax ObjectName.prototype = new PrototypeObject using the
+   Employee example in the document referenced above.
+
+   This tests the logical OR opererator || syntax in constructors.
+
+   Author:             christine@netscape.com
+   Date:               12 november 1997
+*/
+
+var SECTION = "proto_5";
+var VERSION = "JS1_3";
+var TITLE   = "Logical OR || in Constructors";
+
+startTest();
+writeHeaderToLog( SECTION + " "+ TITLE);
+
+function Employee ( name, dept ) {
+  this.name = name || "";
+  this.dept = dept || "general";
+}
+function Manager () {
+  this.reports = [];
+}
+Manager.prototype = new Employee();
+
+function WorkerBee ( projs ) {
+  this.projects = projs || new Array();
+}
+WorkerBee.prototype = new Employee();
+
+function SalesPerson () {
+  this.dept = "sales";
+  this.quota = 100;
+}
+SalesPerson.prototype = new WorkerBee();
+
+function Engineer ( machine ) {
+  this.dept = "engineering";
+  this.machine = machine || "";
+}
+Engineer.prototype = new WorkerBee();
+
+
+var pat = new Engineer( "indy" );
+
+var les = new Engineer();
+
+new TestCase( SECTION,
+	      "var pat = new Engineer(\"indy\"); pat.name",
+	      "",
+	      pat.name );
+
+new TestCase( SECTION,
+	      "pat.dept",
+	      "engineering",
+	      pat.dept );
+
+new TestCase( SECTION,
+	      "pat.projects.length",
+	      0,
+	      pat.projects.length );
+
+new TestCase( SECTION,
+	      "pat.machine",
+	      "indy",
+	      pat.machine );
+
+new TestCase( SECTION,
+	      "pat.__proto__ == Engineer.prototype",
+	      true,
+	      pat.__proto__ == Engineer.prototype );
+
+new TestCase( SECTION,
+	      "var les = new Engineer(); les.name",
+	      "",
+	      les.name );
+
+new TestCase( SECTION,
+	      "les.dept",
+	      "engineering",
+	      les.dept );
+
+new TestCase( SECTION,
+	      "les.projects.length",
+	      0,
+	      les.projects.length );
+
+new TestCase( SECTION,
+	      "les.machine",
+	      "",
+	      les.machine );
+
+new TestCase( SECTION,
+	      "les.__proto__ == Engineer.prototype",
+	      true,
+	      les.__proto__ == Engineer.prototype );
+
+
+test();