The Tor Browser: js/src/tests/ecma/Array/15.4.1.2.js@b8a032363ba2

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

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 /**

     8    File Name:          15.4.1.2.js

     9    ECMA Section:       15.4.1.2 Array(len)

    11    Description:        When Array is called as a function rather than as a

    12    constructor, it creates and initializes a new array

    13    object.  Thus, the function call Array(...) is

    14    equivalent to the object creationi new Array(...) with

    15    the same arguments.

    17    An array is created and returned as if by the

    18    expression new Array(len).

    20    Author:             christine@netscape.com

    21    Date:               7 october 1997

    22 */

    23 var SECTION = "15.4.1.2";

    24 var VERSION = "ECMA_1";

    25 startTest();

    26 var TITLE   = "Array Constructor Called as a Function:  Array(len)";

    28 writeHeaderToLog( SECTION + " "+ TITLE);

    30 new TestCase( SECTION,

    31 	      "(Array()).length",

    32 	      0,

    33 	      (Array()).length );

    35 new TestCase( SECTION,

    36 	      "(Array(0)).length",

    37 	      0,

    38 	      (Array(0)).length );

    40 new TestCase( SECTION,

    41 	      "(Array(1)).length",

    42 	      1,

    43 	      (Array(1)).length );

    45 new TestCase( SECTION,

    46 	      "(Array(10)).length",

    47 	      10,

    48 	      (Array(10)).length );

    50 new TestCase( SECTION,

    51 	      "(Array('1')).length",

    52 	      1,

    53 	      (Array('1')).length );

    55 new TestCase( SECTION,

    56 	      "(Array(1000)).length",

    57 	      1000,

    58 	      (Array(1000)).length );

    60 new TestCase( SECTION,

    61 	      "(Array('1000')).length",

    62 	      1,

    63 	      (Array('1000')).length );

    65 new TestCase( SECTION,

    66 	      "(Array(4294967295)).length",

    67 	      ToUint32(4294967295),

    68 	      (Array(4294967295)).length );

    70 new TestCase( SECTION,

    71 	      "(Array(Math.pow(2,31)-1)).length",

    72 	      ToUint32(Math.pow(2,31)-1),

    73 	      (Array(Math.pow(2,31)-1)).length );

    75 new TestCase( SECTION,

    76 	      "(Array(Math.pow(2,31))).length",

    77 	      ToUint32(Math.pow(2,31)),

    78 	      (Array(Math.pow(2,31))).length );

    80 new TestCase( SECTION,

    81 	      "(Array(Math.pow(2,31)+1)).length",

    82 	      ToUint32(Math.pow(2,31)+1),

    83 	      (Array(Math.pow(2,31)+1)).length );

    85 new TestCase( SECTION,

    86 	      "(Array('8589934592')).length",

    87 	      1,

    88 	      (Array("8589934592")).length );

    90 new TestCase( SECTION,

    91 	      "(Array('4294967296')).length",

    92 	      1,

    93 	      (Array("4294967296")).length );

    95 new TestCase( SECTION,

    96 	      "(Array(1073741823)).length",

    97 	      ToUint32(1073741823),

    98 	      (Array(1073741823)).length );

   100 new TestCase( SECTION,

   101 	      "(Array(1073741824)).length",

   102 	      ToUint32(1073741824),

   103 	      (Array(1073741824)).length );

   105 new TestCase( SECTION,

   106 	      "(Array('a string')).length",

   107 	      1,

   108 	      (Array("a string")).length );

   110 test();

   112 function ToUint32( n ) {

   113   n = Number( n );

   114   var sign = ( n < 0 ) ? -1 : 1;

   116   if ( Math.abs( n ) == 0 || Math.abs( n ) == Number.POSITIVE_INFINITY) {

   117     return 0;

   118   }

   119   n = sign * Math.floor( Math.abs(n) )

   121     n = n % Math.pow(2,32);

   123   if ( n < 0 ){

   124     n += Math.pow(2,32);

   125   }

   127   return ( n );

   128 }

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