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

/*---
info: The production x /= y is the same as x = x / y
es5id: 11.13.2_A4.2_T1.2
description: Type(x) and Type(y) vary between primitive number and Number object
---*/

var x;

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

//CHECK#2
x = new Number(1);
x /= 1;
if (x !== 1) {
  $ERROR('#2: x = new Number(1); x /= 1; x === 1. Actual: ' + (x));
}

//CHECK#3
x = 1;
x /= new Number(1);
if (x !== 1) {
  $ERROR('#3: x = 1; x /= new Number(1); x === 1. Actual: ' + (x));
}

//CHECK#4
x = new Number(1);
x /= new Number(1);
if (x !== 1) {
  $ERROR('#4: x = new Number(1); x /= new Number(1); x === 1. Actual: ' + (x));
}
