The Tor Browser: js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

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

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

     4 /**

     5  * Operator uses PutValue

     6  *

     7  * @path ch11/11.13/11.13.2/S11.13.2_A2.2_T6.js

     8  * @description If Type(LeftHandSideExpression) is not Reference, throw ReferenceError (or SyntaxError). Check operator is "x <<= y"

     9  * @negative

    10  */

    12 //CHECK#1

    13 try {

    14   var z = (1 <<= 1);

    15   $ERROR('#1.1: 1 <<= 1 throw ReferenceError (or SyntaxError). Actual: ' + (z));

    16 }

    17 catch (e) {

    18   if ((e instanceof ReferenceError) !== true) {

    19     $ERROR('#1.2: 1 <<= 1 throw ReferenceError (or SyntaxError). Actual: ' + (e));

    20   } else {

    21     var z = (1 <<= 1);

    22   }

    23 }

The Tor Browser / file revision