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
|
/* -*- 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/. */
/*
* Date: 03 December 2000
*
*
* SUMMARY: This test arose from Bugzilla bug 57043:
* "Negative integers as object properties: strange behavior!"
*
* We check that object properties may be indexed by signed
* numeric literals, as in assignments like obj[-1] = 'Hello'
*
* NOTE: it should not matter whether we provide the literal with
* quotes around it or not; e.g. these should be equivalent:
*
* obj[-1] = 'Hello'
* obj['-1'] = 'Hello'
*/
//-----------------------------------------------------------------------------
var BUGNUMBER = 57043;
var summary = 'Indexing object properties by signed numerical literals -'
var statprefix = 'Adding a property to test object with an index of ';
var statsuffix = ', testing it now -';
var propprefix = 'This is property ';
var obj = new Object();
var status = ''; var actual = ''; var expect = ''; var value = '';
// various indices to try -
var index =
[-1073741825, -1073741824, -1073741823, -5000, -507, -3, -2, -1, -0, 0, 1, 2, 3, 1073741823, 1073741824, 1073741825];
//-------------------------------------------------------------------------------------------------
test();
//-------------------------------------------------------------------------------------------------
function test()
{
printBugNumber(BUGNUMBER);
printStatus (summary);
for (var j in index) {testProperty(index[j]);}
}
function testProperty(i)
{
status = getStatus(i);
// try to assign a property using the given index -
obj[i] = value = (propprefix + i);
// try to read the property back via the index (as number) -
expect = value;
actual = obj[i];
reportCompare(expect, actual, status);
// try to read the property back via the index as string -
expect = value;
actual = obj[String(i)];
reportCompare(expect, actual, status);
}
function positive(n) { return 1 / n > 0; }
function getStatus(i)
{
return statprefix +
(positive(i) ? i : "-" + -i) +
statsuffix;
}
|
