tests/mozilla/ecma/Array/15.4.2.2-1.js

   1 /* The contents of this file are subject to the Netscape Public
   2  * License Version 1.1 (the "License"); you may not use this file
   3  * except in compliance with the License. You may obtain a copy of
   4  * the License at http://www.mozilla.org/NPL/
   5  *
   6  * Software distributed under the License is distributed on an "AS
   7  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
   8  * implied. See the License for the specific language governing
   9  * rights and limitations under the License.
  10  *
  11  * The Original Code is Mozilla Communicator client code, released March
  12  * 31, 1998.
  13  *
  14  * The Initial Developer of the Original Code is Netscape Communications
  15  * Corporation. Portions created by Netscape are
  16  * Copyright (C) 1998 Netscape Communications Corporation. All
  17  * Rights Reserved.
  18  *
  19  * Contributor(s):
  20  *
  21  */
  22 /**
  23     File Name:          15.4.2.2-1.js
  24     ECMA Section:       15.4.2.2 new Array(len)
  25
  26     Description:        This description only applies of the constructor is
  27                         given two or more arguments.
  28
  29                         The [[Prototype]] property of the newly constructed
  30                         object is set to the original Array prototype object,
  31                         the one that is the initial value of Array.prototype(0)
  32                         (15.4.3.1).
  33
  34                         The [[Class]] property of the newly constructed object
  35                         is set to "Array".
  36
  37                         If the argument len is a number, then the length
  38                         property  of the newly constructed object is set to
  39                         ToUint32(len).
  40
  41                         If the argument len is not a number, then the length
  42                         property of the newly constructed object is set to 1
  43                         and the 0 property of the newly constructed object is
  44                         set to len.
  45
  46                         This file tests cases where len is a number.
  47
  48                         The cases in this test need to be updated since the
  49                         ToUint32 description has changed.
  50
  51     Author:             christine@netscape.com
  52     Date:               7 october 1997
  53 */
  54     var SECTION = "15.4.2.2-1";
  55     var VERSION = "ECMA_1";
  56     startTest();
  57     var TITLE   = "The Array Constructor:  new Array( len )";
  58
  59     writeHeaderToLog( SECTION + " "+ TITLE);
  60
  61     var testcases = getTestCases();
  62     test();
  63
  64 function getTestCases() {
  65     var array = new Array();
  66     var item = 0;
  67
  68     array[item++] = new TestCase( SECTION,      "new Array(0)",             "",                 (new Array(0)).toString() );
  69     array[item++] = new TestCase( SECTION,      "typeof new Array(0)",      "object",           (typeof new Array(0)) );
  70     array[item++] = new TestCase( SECTION,      "(new Array(0)).length",    0,                  (new Array(0)).length );
  71     array[item++] = new TestCase( SECTION,      "(new Array(0)).toString", Array.prototype.toString,    (new Array(0)).toString );
  72
  73     array[item++] = new TestCase( SECTION,   "new Array(1)",            "",                 (new Array(1)).toString() );
  74     array[item++] = new TestCase( SECTION,   "new Array(1).length",     1,                  (new Array(1)).length );
  75     array[item++] = new TestCase( SECTION,   "(new Array(1)).toString", Array.prototype.toString,   (new Array(1)).toString );
  76
  77     array[item++] = new TestCase( SECTION,      "(new Array(-0)).length",                       0,  (new Array(-0)).length );
  78     array[item++] = new TestCase( SECTION,      "(new Array(0)).length",                        0,  (new Array(0)).length );
  79
  80     array[item++] = new TestCase( SECTION,      "(new Array(10)).length",           10,         (new Array(10)).length );
  81     array[item++] = new TestCase( SECTION,      "(new Array('1')).length",          1,          (new Array('1')).length );
  82     array[item++] = new TestCase( SECTION,      "(new Array(1000)).length",         1000,       (new Array(1000)).length );
  83     array[item++] = new TestCase( SECTION,      "(new Array('1000')).length",       1,          (new Array('1000')).length );
  84
  85     array[item++] = new TestCase( SECTION,      "(new Array(4294967295)).length",   ToUint32(4294967295),   (new Array(4294967295)).length );
  86
  87     array[item++] = new TestCase( SECTION,      "(new Array('8589934592')).length", 1,                      (new Array("8589934592")).length );
  88     array[item++] = new TestCase( SECTION,      "(new Array('4294967296')).length", 1,                      (new Array("4294967296")).length );
  89     array[item++] = new TestCase( SECTION,      "(new Array(1073741824)).length",   ToUint32(1073741824),       (new Array(1073741824)).length );
  90
  91     return ( array );
  92 }
  93 function test() {
  94     for ( tc=0; tc < testcases.length; tc++ ) {
  95         testcases[tc].passed = writeTestCaseResult(
  96                             testcases[tc].expect,
  97                             testcases[tc].actual,
  98                             testcases[tc].description +" = "+
  99                             testcases[tc].actual );
 100
 101         testcases[tc].reason += ( testcases[tc].passed )
 102                              ? ""
 103                              : "wrong value ";
 104     }
 105     stopTest();
 106     return ( testcases );
 107 }
 108 function ToUint32( n ) {
 109     n = Number( n );
 110     var sign = ( n < 0 ) ? -1 : 1;
 111
 112     if ( Math.abs( n ) == 0 || Math.abs( n ) == Number.POSITIVE_INFINITY) {
 113         return 0;
 114     }
 115     n = sign * Math.floor( Math.abs(n) )
 116
 117     n = n % Math.pow(2,32);
 118
 119     if ( n < 0 ){
 120         n += Math.pow(2,32);
 121     }
 122
 123     return ( n );
 124 }