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40 * Date: 03 December 2000
43 * SUMMARY: This test arose from Bugzilla bug 57043:
44 * "Negative integers as object properties: strange behavior!"
46 * We check that object properties may be indexed by signed
47 * numeric literals, as in assignments like obj[-1] = 'Hello'
49 * NOTE: it should not matter whether we provide the literal with
50 * quotes around it or not; e.g. these should be equivalent:
55 //-----------------------------------------------------------------------------
56 var BUGNUMBER = 57043;
57 var summary = 'Indexing object properties by signed numerical literals -'
58 var statprefix = 'Adding a property to test object with an index of ';
59 var statsuffix = ', testing it now -';
60 var propprefix = 'This is property ';
61 var obj = new Object();
62 var status = ''; var actual = ''; var expect = ''; var value = '';
65 // various indices to try -
67 [-1073741825, -1073741824, -1073741823, -5000, -507, -3, -2, -1, -0, 0, 1, 2, 3, 1073741823, 1073741824, 1073741825];
70 //-------------------------------------------------------------------------------------------------
72 //-------------------------------------------------------------------------------------------------
78 printBugNumber(BUGNUMBER);
79 printStatus (summary);
81 for (var j in index) {testProperty(index[j]);}
87 function testProperty(i)
89 status = getStatus(i);
91 // try to assign a property using the given index -
92 obj[i] = value = (propprefix + i);
94 // try to read the property back via the index (as number) -
97 reportCompare(expect, actual, status);
99 // try to read the property back via the index as string -
101 actual = obj[String(i)];
102 reportCompare(expect, actual, status);
105 function positive(n) { return 1 / n > 0; }
107 function getStatus(i)
110 (positive(i) ? i : "-" + -i) +