The Tor Browser: js/src/tests/ecma_5/extensions/destructuring-for-inof-__proto_

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /*

     2  * Any copyright is dedicated to the Public Domain.

     3  * http://creativecommons.org/licenses/publicdomain/

     4  */

     6 var gTestfile = 'destructuring-for-inof-__proto__.js';

     7 var BUGNUMBER = 963641;

     8 var summary =

     9   "__proto__ should work in destructuring patterns as the targets of " +

    10   "for-in/for-of loops";

    12 print(BUGNUMBER + ": " + summary);

    14 /**************

    15  * BEGIN TEST *

    16  **************/

    18 function objectWithProtoProperty(v)

    19 {

    20   var obj = {};

    21   return Object.defineProperty(obj, "__proto__",

    22                                {

    23                                  enumerable: true,

    24                                  configurable: true,

    25                                  writable: true,

    26                                  value: v

    27                                });

    28 }

    30 function* objectWithProtoGenerator(v)

    31 {

    32   yield objectWithProtoProperty(v);

    33 }

    35 function* identityGenerator(v)

    36 {

    37   yield v;

    38 }

    40 for (var { __proto__: target } of objectWithProtoGenerator(null))

    41   assertEq(target, null);

    43 for ({ __proto__: target } of objectWithProtoGenerator("aacchhorrt"))

    44   assertEq(target, "aacchhorrt");

    46 for ({ __proto__: target } of identityGenerator(42))

    47   assertEq(target, Number.prototype);

    49 for (var { __proto__: target } in { prop: "kneedle" })

    50   assertEq(target, String.prototype);

    52 for ({ __proto__: target } in { prop: "snork" })

    53   assertEq(target, String.prototype);

    55 for ({ __proto__: target } in { prop: "ohia" })

    56   assertEq(target, String.prototype);

    58 function nested()

    59 {

    60   for (var { __proto__: target } of objectWithProtoGenerator(null))

    61     assertEq(target, null);

    63   for ({ __proto__: target } of objectWithProtoGenerator("aacchhorrt"))

    64     assertEq(target, "aacchhorrt");

    66   for ({ __proto__: target } of identityGenerator(42))

    67     assertEq(target, Number.prototype);

    69   for (var { __proto__: target } in { prop: "kneedle" })

    70     assertEq(target, String.prototype);

    72   for ({ __proto__: target } in { prop: "snork" })

    73     assertEq(target, String.prototype);

    75   for ({ __proto__: target } in { prop: "ohia" })

    76     assertEq(target, String.prototype);

    77 }

    78 nested();

    80 /******************************************************************************/

    82 if (typeof reportCompare === "function")

    83   reportCompare(true, true);

    85 print("Tests complete");

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