1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
/* -*- tab-width: 2; indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/**
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_t 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 );
}
|
