test262/test/suite/ch09/9.9/S9.9_A6.js

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

/**
 * ToObject conversion from Object: The result is the input
 * argument (no conversion)
 *
 * @path 09_Type_Conversion/9.9_ToObject/S9.9_A6.js
 * @description Converting from Objects to Object
 */

function MyObject( val ) {
    this.value = val;
    this.valueOf = function (){ return this.value; }
}

var x = new MyObject(1);
var y = Object(x);

// CHECK#1
if (y.valueOf() !== x.valueOf()){
  $ERROR('#1: Object(obj).valueOf() === obj.valueOf(). Actual: ' + (Object(obj).valueOf()));
}

// CHECK#2
if (typeof y !== typeof x){
  $ERROR('#2: typeof Object(obj) === typeof obj. Actual: ' + (typeof Object(obj)));
}

// CHECK#3
if (y.constructor.prototype !== x.constructor.prototype){
  $ERROR('#3: Object(obj).constructor.prototype === obj.constructor.prototype. Actual: ' + (Object(obj).constructor.prototype));
}


// CHECK#4
if (y !== x){
  $ERROR('#4: Object(obj) === obj');
}