text: // Copyright 2009 the Sputnik authors.  All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  
  /**
   * @name: S11.13.2_A4.9_T2.9;
   * @section: 11.13.2, 11.10.1;
   * @assertion: The production x &= y is the same as x = x & y; 
   * @description: Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Null;
   */
  
  //CHECK#1
  x = true;
  x &= null;
  if (x !== 0) {
    $ERROR('#1: x = true; x &= null; x === 0. Actual: ' + (x));
  }
  
  //CHECK#2
  x = null;
  x &= true;
  if (x !== 0) {
    $ERROR('#2: x = null; x &= true; x === 0. Actual: ' + (x));
  }
  
  //CHECK#3
  x = new Boolean(true);
  x &= null;
  if (x !== 0) {
    $ERROR('#3: x = new Boolean(true); x &= null; x === 0. Actual: ' + (x));
  }
  
  //CHECK#4
  x = null;
  x &= new Boolean(true);
  if (x !== 0) {
    $ERROR('#4: x = null; x &= new Boolean(true); x === 0. Actual: ' + (x));
  }
  