1 /*
   2  * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  * Check important prototype chain properties of Function and Object.
  26  *
  27  * @test
  28  * @run
  29  */
  30 
  31 print(typeof(Object) == 'function');
  32 print(typeof(Object.prototype) == 'object');
  33 print(typeof(Function) == 'function');
  34 // Function's prototype is a function!
  35 print(typeof(Function.prototype) == 'function');
  36 
  37 print(Function.constructor === Function);
  38 print(Function.prototype === Object.getPrototypeOf(Function));
  39 print(Object.getPrototypeOf(Function.prototype) === Object.prototype);
  40 
  41 print(Object.constructor === Function);
  42 print(Object.getPrototypeOf(Object.prototype) === null);
  43 print(Object.getPrototypeOf(Object) === Function.prototype);
  44 
  45 // check one function from Function.prototype
  46 var applyFunc = Function.prototype.apply;
  47 print(applyFunc.constructor === Function);
  48 print(Object.getPrototypeOf(applyFunc) === Function.prototype);
  49 print(applyFunc.prototype === undefined);
  50 
  51 // check one function from Object.prototype
  52 var toStringFunc = Object.prototype.toString;
  53 print(toStringFunc.constructor === Function);
  54 print(Object.getPrototypeOf(toStringFunc) === Function.prototype);
  55 print(toStringFunc.prototype === undefined);