text: // Copyright 2009 the Sputnik authors.  All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  
  /*---
  info: Operator x @= y returns x @ y
  es5id: 11.13.2_A3.2_T10
  description: Checking Expression and Variable statements for x ^= y
  ---*/
  
  //CHECK#1
  var x = 0;
  var x1 = (x ^= 1);
  if (x1 !== 1) {
    $ERROR('#1: var x = 0; var x1 = (x ^= 1); x1 === 1. Actual: ' + (x1));
  }
  
  //CHECK#2
  var y;
  var y1;
  y = 1;
  y1 = (y ^= 0);
  if (y1 !== 1) {
    $ERROR('#2: y = 1; y1 = (y ^= 0); y1 === 1. Actual: ' + (y1));
  }
  