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.

 /**

  * Operator x & y returns ToNumber(x) & ToNumber(y)

  *

  * @path ch11/11.10/11.10.1/S11.10.1_A3_T1.4.js

  * @description Type(x) and Type(y) are null and undefined

  */

 //CHECK#1

 if ((null & undefined) !== 0) {

   $ERROR('#1: (null & undefined) === 0. Actual: ' + ((null & undefined)));

 }

 //CHECK#2

 if ((undefined & null) !== 0) {

   $ERROR('#2: (undefined & null) === 0. Actual: ' + ((undefined & null)));

 }

 //CHECK#3

 if ((undefined & undefined) !== 0) {

   $ERROR('#3: (undefined & undefined) === 0. Actual: ' + ((undefined & undefined)));

 }

 //CHECK#4

 if ((null & null) !== 0) {

   $ERROR('#4: (null & null) === 0. Actual: ' + ((null & null)));

 }