test/built-ins/Object/prototype/constructor/S15.2.4.1_A1_T2.js


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// Copyright 2009 the Sputnik authors.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
info: |
    The initial value of Object.prototype.constructor is the built-in Object
    constructor
es5id: 15.2.4.1_A1_T2
description: >
    Creating "new Object.prototype.constructor" and checking its
    properties
---*/

var constr = Object.prototype.constructor;

var obj = new constr;

// CHECK#0
if (obj === undefined) {
  $ERROR('#0: new Object() return the newly created native object.');
}

// CHECK#1
if (obj.constructor !== Object) {
  $ERROR('#1: new Object() create a new native ECMAScript object');
}

// CHECK#2
if (!(Object.prototype.isPrototypeOf(obj))) {
  $ERROR('#2: when new Object() calls the [[Prototype]] property of the newly constructed object is set to the Object prototype object.');
}

// CHECK#3
var to_string_result = '[object ' + 'Object' + ']';
if (obj.toString() !== to_string_result) {
  $ERROR('#3: when new Object() calls the [[Class]] property of the newly constructed object is set to "Object".');
}

// CHECK#4
if (obj.valueOf().toString() !== to_string_result) {
  $ERROR('#4: when new Object() calls the newly constructed object has no [[Value]] property.');
}