JSTests/test262/test/language/expressions/postfix-increment/S11.3.1_A4_T5.js

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

/*---
info: Operator x++ returns ToNumber(x)
es5id: 11.3.1_A4_T5
description: Type(x) is Object object or Function object
---*/

//CHECK#1
var x = {}; 
var y = x++;
if (isNaN(y) !== true) {
  $ERROR('#1: var x = {}; var y = x++; y === Not-a-Number. Actual: ' + (y));
}

//CHECK#2
var x = function(){return 1}; 
var y = x++;
if (isNaN(y) !== true) {
  $ERROR('#2: var x = function(){return 1}; var y = x++; y === Not-a-Number. Actual: ' + (y));
}