// 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_A4.7_T1.1
description: >
    Type(x) and Type(y) vary between primitive boolean and Boolean
    object
---*/

var x;

//CHECK#1
x = true;
x >>= true;
if (x !== 0) {
  $ERROR('#1: x = true; x >>= true; x === 0. Actual: ' + (x));
}

//CHECK#2
x = new Boolean(true);
x >>= true;
if (x !== 0) {
  $ERROR('#2: x = new Boolean(true); x >>= true; x === 0. Actual: ' + (x));
}

//CHECK#3
x = true;
x >>= new Boolean(true);
if (x !== 0) {
  $ERROR('#3: x = true; x >>= new Boolean(true); x === 0. Actual: ' + (x));
}

//CHECK#4
x = new Boolean(true);
x >>= new Boolean(true);
if (x !== 0) {
  $ERROR('#4: x = new Boolean(true); x >>= new Boolean(true); x === 0. Actual: ' + (x));
}
