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_A4.5_T2.5;
   * @section: 11.13.2, 11.6.2;
   * @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 String (primitive or object) and Boolean (primitive and object);
  */
  
  //CHECK#1
  x = true;
  x -= "1";
  if (x !== 0) {
    $ERROR('#1: x = true; x -= "1"; x === 0. Actual: ' + (x));
  }
  
  //CHECK#2
  x = "1";
  x -= true;
  if (x !== 0) {
    $ERROR('#2: x = "1"; x -= true; x === 0. Actual: ' + (x));
  }
  
  //CHECK#3
  x = new Boolean(true);
  x -= "1";
  if (x !== 0) {
    $ERROR('#3: x = new Boolean(true); x -= "1"; x === 0. Actual: ' + (x));
  }
  
  //CHECK#4
  x = "1";
  x -= new Boolean(true);
  if (x !== 0) {
    $ERROR('#4: x = "1"; x -= new Boolean(true); x === 0. Actual: ' + (x));
  }
  
  //CHECK#5
  x = true;
  x -= new String("1");
  if (x !== 0) {
    $ERROR('#5: x = true; x -= new String("1"); x === 0. Actual: ' + (x));
  }
  
  //CHECK#6
  x = new String("1");
  x -= true;
  if (x !== 0) {
    $ERROR('#6: x = new String("1"); x -= true; x === 0. Actual: ' + (x));
  }
  
  //CHECK#7
  x = new Boolean(true);
  x -= new String("1");
  if (x !== 0) {
    $ERROR('#7: x = new Boolean(true); x -= new String("1"); x === 0. Actual: ' + (x));
  }
  
  //CHECK#8
  x = new String("1");
  x -= new Boolean(true);
  if (x !== 0) {
    $ERROR('#8: x = new String("1"); x -= new Boolean(true); x === 0. Actual: ' + (x));
  }
  