The Tor Browser / file revision

 // Copyright 2009 the Sputnik authors.  All rights reserved.

 // This code is governed by the BSD license found in the LICENSE file.

 /**

  * Type(x) and Type(y) are Boolean-s.

  * Return false, if x and y are both true or both false; otherwise, return true

  *

  * @path ch11/11.9/11.9.5/S11.9.5_A3.js

  * @description x and y are primitive booleans

  */

 //CHECK#1

 if (true !== true) {

   $ERROR('#1: true === true');

 }

 //CHECK#2

 if (false !== false) {

   $ERROR('#2: false === false');

 }

 //CHECK#3

 if (!(true !== false)) {

   $ERROR('#3: true !== false');

 }

 //CHECK#4

 if (!(false !== true)) {

   $ERROR('#4: false !== true');

 }