gecko-dev/js/tests/ecma/Array/15.4.2.2-1.js

182 lines
5.4 KiB
JavaScript

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code, released
* March 31, 1998.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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/**
File Name: 15.4.2.2-1.js
ECMA Section: 15.4.2.2 new Array(len)
Description: This description only applies of the constructor is
given two or more arguments.
The [[Prototype]] property of the newly constructed
object is set to the original Array prototype object,
the one that is the initial value of Array.prototype(0)
(15.4.3.1).
The [[Class]] property of the newly constructed object
is set to "Array".
If the argument len is a number, then the length
property of the newly constructed object is set to
ToUint32(len).
If the argument len is not a number, then the length
property of the newly constructed object is set to 1
and the 0 property of the newly constructed object is
set to len.
This file tests cases where len is a number.
The cases in this test need to be updated since the
ToUint32 description has changed.
Author: christine@netscape.com
Date: 7 october 1997
*/
var SECTION = "15.4.2.2-1";
var VERSION = "ECMA_1";
startTest();
var TITLE = "The Array Constructor: new Array( len )";
writeHeaderToLog( SECTION + " "+ TITLE);
new TestCase( SECTION,
"new Array(0)",
"",
(new Array(0)).toString() );
new TestCase( SECTION,
"typeof new Array(0)",
"object",
(typeof new Array(0)) );
new TestCase( SECTION,
"(new Array(0)).length",
0,
(new Array(0)).length );
new TestCase( SECTION,
"(new Array(0)).toString",
Array.prototype.toString,
(new Array(0)).toString );
new TestCase( SECTION,
"new Array(1)",
"",
(new Array(1)).toString() );
new TestCase( SECTION,
"new Array(1).length",
1,
(new Array(1)).length );
new TestCase( SECTION,
"(new Array(1)).toString",
Array.prototype.toString,
(new Array(1)).toString );
new TestCase( SECTION,
"(new Array(-0)).length",
0,
(new Array(-0)).length );
new TestCase( SECTION,
"(new Array(0)).length",
0,
(new Array(0)).length );
new TestCase( SECTION,
"(new Array(10)).length",
10,
(new Array(10)).length );
new TestCase( SECTION,
"(new Array('1')).length",
1,
(new Array('1')).length );
new TestCase( SECTION,
"(new Array(1000)).length",
1000,
(new Array(1000)).length );
new TestCase( SECTION,
"(new Array('1000')).length",
1,
(new Array('1000')).length );
new TestCase( SECTION,
"(new Array(4294967295)).length",
ToUint32(4294967295),
(new Array(4294967295)).length );
new TestCase( SECTION,
"(new Array('8589934592')).length",
1,
(new Array("8589934592")).length );
new TestCase( SECTION,
"(new Array('4294967296')).length",
1,
(new Array("4294967296")).length );
new TestCase( SECTION,
"(new Array(1073741824)).length",
ToUint32(1073741824),
(new Array(1073741824)).length );
test();
function ToUint32( n ) {
n = Number( n );
var sign = ( n < 0 ) ? -1 : 1;
if ( Math.abs( n ) == 0 || Math.abs( n ) == Number.POSITIVE_INFINITY) {
return 0;
}
n = sign * Math.floor( Math.abs(n) )
n = n % Math.pow(2,32);
if ( n < 0 ){
n += Math.pow(2,32);
}
return ( n );
}