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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
// Any copyright is dedicated to the Public Domain.
// http://creativecommons.org/licenses/publicdomain/
//-----------------------------------------------------------------------------
var BUGNUMBER = 616294;
var summary =
"|delete x| inside a function in eval code, where that eval code includes " +
"|var x| at top level, actually does delete the binding for x";
print(BUGNUMBER + ": " + summary);
/**************
* BEGIN TEST *
**************/
var f;
function testOuterVar()
{
return eval("var x; (function() { return delete x; })");
}
f = testOuterVar();
assertEq(f(), true); // configurable, so remove => true
assertEq(f(), true); // not there => true (only non-configurable => false)
function testOuterFunction()
{
return eval("function x() { } (function() { return delete x; })");
}
f = testOuterFunction();
assertEq(f(), true); // configurable, so remove => true
assertEq(f(), true); // not there => true (only non-configurable => false)
function testOuterForVar()
{
return eval("for (var x; false; ); (function() { return delete x; })");
}
f = testOuterForVar();
assertEq(f(), true); // configurable, so remove => true
assertEq(f(), true); // not there => true (only non-configurable => false)
function testOuterForInVar()
{
return eval("for (var x in {}); (function() { return delete x; })");
}
f = testOuterForInVar();
assertEq(f(), true); // configurable, so remove => true
assertEq(f(), true); // not there => true (only non-configurable => false)
function testOuterNestedVar()
{
return eval("for (var q = 0; q < 5; q++) { var x; } (function() { return delete x; })");
}
f = testOuterNestedVar();
assertEq(f(), true); // configurable, so remove => true
assertEq(f(), true); // not there => true (only non-configurable => false)
function testOuterNestedConditionalVar()
{
return eval("for (var q = 0; q < 5; q++) { if (false) { var x; } } (function() { return delete x; })");
}
f = testOuterNestedConditionalVar();
assertEq(f(), true); // configurable, so remove => true
assertEq(f(), true); // not there => true (only non-configurable => false)
function testVarInWith()
{
return eval("with ({}) { var x; } (function() { return delete x; })");
}
f = testVarInWith();
assertEq(f(), true); // configurable, so remove => true
assertEq(f(), true); // not there => true (only non-configurable => false)
function testForVarInWith()
{
return eval("with ({}) { for (var x = 0; x < 5; x++); } (function() { return delete x; })");
}
f = testForVarInWith();
assertEq(f(), true); // configurable, so remove => true
assertEq(f(), true); // not there => true (only non-configurable => false)
function testForInVarInWith()
{
return eval("with ({}) { for (var x in {}); } (function() { return delete x; })");
}
f = testForInVarInWith();
assertEq(f(), true); // configurable, so remove => true
assertEq(f(), true); // not there => true (only non-configurable => false)
function testUnknown()
{
return eval("nameToDelete = 17; (function() { return delete nameToDelete; })");
}
f = testUnknown();
assertEq(f(), true); // configurable global property, so remove => true
assertEq(f(), true); // not there => true (only non-configurable => false)
function testArgumentShadow()
{
return eval("var x; (function(x) { return delete x; })");
}
f = testArgumentShadow();
assertEq(f(), false); // non-configurable argument => false
function testArgument()
{
return eval("(function(x) { return delete x; })");
}
f = testArgument();
assertEq(f(), false); // non-configurable argument => false
function testFunctionLocal()
{
return eval("(function() { var x; return delete x; })");
}
f = testFunctionLocal();
assertEq(f(), false); // defined by function code => not configurable => false
/******************************************************************************/
if (typeof reportCompare === "function")
reportCompare(true, true);
print("All tests passed!");
|
