зеркало из https://github.com/mozilla/pjs.git
124 строки
5.3 KiB
JavaScript
124 строки
5.3 KiB
JavaScript
/* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code, released March
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* 31, 1998.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*
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*/
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/**
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File Name: 15.4.2.2-1.js
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ECMA Section: 15.4.2.2 new Array(len)
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Description: This description only applies of the constructor is
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given two or more arguments.
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The [[Prototype]] property of the newly constructed
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object is set to the original Array prototype object,
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the one that is the initial value of Array.prototype(0)
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(15.4.3.1).
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The [[Class]] property of the newly constructed object
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is set to "Array".
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If the argument len is a number, then the length
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property of the newly constructed object is set to
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ToUint32(len).
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If the argument len is not a number, then the length
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property of the newly constructed object is set to 1
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and the 0 property of the newly constructed object is
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set to len.
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This file tests cases where len is a number.
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The cases in this test need to be updated since the
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ToUint32 description has changed.
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Author: christine@netscape.com
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Date: 7 october 1997
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*/
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var SECTION = "15.4.2.2-1";
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var VERSION = "ECMA_1";
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startTest();
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var TITLE = "The Array Constructor: new Array( len )";
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writeHeaderToLog( SECTION + " "+ TITLE);
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var testcases = getTestCases();
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test();
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function getTestCases() {
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var array = new Array();
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var item = 0;
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array[item++] = new TestCase( SECTION, "new Array(0)", "", (new Array(0)).toString() );
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array[item++] = new TestCase( SECTION, "typeof new Array(0)", "object", (typeof new Array(0)) );
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array[item++] = new TestCase( SECTION, "(new Array(0)).length", 0, (new Array(0)).length );
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array[item++] = new TestCase( SECTION, "(new Array(0)).toString", Array.prototype.toString, (new Array(0)).toString );
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array[item++] = new TestCase( SECTION, "new Array(1)", "", (new Array(1)).toString() );
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array[item++] = new TestCase( SECTION, "new Array(1).length", 1, (new Array(1)).length );
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array[item++] = new TestCase( SECTION, "(new Array(1)).toString", Array.prototype.toString, (new Array(1)).toString );
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array[item++] = new TestCase( SECTION, "(new Array(-0)).length", 0, (new Array(-0)).length );
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array[item++] = new TestCase( SECTION, "(new Array(0)).length", 0, (new Array(0)).length );
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array[item++] = new TestCase( SECTION, "(new Array(10)).length", 10, (new Array(10)).length );
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array[item++] = new TestCase( SECTION, "(new Array('1')).length", 1, (new Array('1')).length );
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array[item++] = new TestCase( SECTION, "(new Array(1000)).length", 1000, (new Array(1000)).length );
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array[item++] = new TestCase( SECTION, "(new Array('1000')).length", 1, (new Array('1000')).length );
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array[item++] = new TestCase( SECTION, "(new Array(4294967295)).length", ToUint32(4294967295), (new Array(4294967295)).length );
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array[item++] = new TestCase( SECTION, "(new Array('8589934592')).length", 1, (new Array("8589934592")).length );
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array[item++] = new TestCase( SECTION, "(new Array('4294967296')).length", 1, (new Array("4294967296")).length );
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array[item++] = new TestCase( SECTION, "(new Array(1073741824)).length", ToUint32(1073741824), (new Array(1073741824)).length );
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return ( array );
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}
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function test() {
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for ( tc=0; tc < testcases.length; tc++ ) {
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testcases[tc].passed = writeTestCaseResult(
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testcases[tc].expect,
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testcases[tc].actual,
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testcases[tc].description +" = "+
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testcases[tc].actual );
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testcases[tc].reason += ( testcases[tc].passed )
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? ""
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: "wrong value ";
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}
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stopTest();
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return ( testcases );
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}
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function ToUint32( n ) {
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n = Number( n );
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var sign = ( n < 0 ) ? -1 : 1;
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if ( Math.abs( n ) == 0 || Math.abs( n ) == Number.POSITIVE_INFINITY) {
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return 0;
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}
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n = sign * Math.floor( Math.abs(n) )
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n = n % Math.pow(2,32);
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if ( n < 0 ){
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n += Math.pow(2,32);
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}
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return ( n );
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} |