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
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
// Copyright 2013 the V8 project authors. All rights reserved.
// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
description("Test behaviour of JSON reviver function.")
if (!Array.isArray)
Array.isArray = function(o) { return o.constructor === Array; }
function arrayReviver(i,v) {
if (i != "") {
currentHolder = this;
debug("");
debug("Ensure the holder for our array is indeed an array");
shouldBeTrue("Array.isArray(currentHolder)");
shouldBe("currentHolder.length", "" + expectedLength);
if (i > 0) {
debug("");
debug("Ensure that we always get the same holder");
shouldBe("currentHolder", "lastHolder");
}
switch (Number(i)) {
case 0:
v = undefined;
debug("");
debug("Ensure that the holder already has all the properties present at the start of filtering");
shouldBe("currentHolder[0]", '"a value"');
shouldBe("currentHolder[1]", '"another value"');
shouldBe("currentHolder[2]", '"and another value"');
shouldBe("currentHolder[3]", '"to delete"');
shouldBe("currentHolder[4]", '"extra value"');
break;
case 1:
debug("");
debug("Ensure that returning undefined has removed the property 0 from the holder during filtering.");
shouldBeFalse("currentHolder.hasOwnProperty(0)");
currentHolder[2] = "a replaced value";
break;
case 2:
debug("");
debug("Ensure that changing the value of a property is reflected while filtering.")
shouldBe("currentHolder[2]", '"a replaced value"');
value = v;
debug("");
debug("Ensure that the changed value is reflected in the arguments passed to the reviver");
shouldBe("value", "currentHolder[2]");
delete this[3];
break;
case 3:
debug("");
debug("Ensure that we visited a value that we have deleted, and that deletion is reflected while filtering.");
shouldBeFalse("currentHolder.hasOwnProperty(3)");
value = v;
debug("");
debug("Ensure that when visiting a deleted property value is undefined");
shouldBeUndefined("value");
v = "undelete the property";
expectedLength = this.length = 3;
break;
case 4:
if (this.length != 3) {
testFailed("Did not call reviver for deleted property");
expectedLength = this.length = 3;
break;
}
case 5:
testPassed("Ensured that property was visited despite Array length being reduced.");
value = v;
shouldBeUndefined("value");
this[10] = "fail";
break;
default:
testFailed("Visited unexpected property " + i + " with value " + v);
}
}
lastHolder = this;
return v;
}
expectedLength = 5;
var result = JSON.parse('["a value", "another value", "and another value", "to delete", "extra value"]', arrayReviver);
debug("");
debug("Ensure that we created the root holder as specified in ES5");
shouldBeTrue("'' in lastHolder");
shouldBe("result", "lastHolder['']");
debug("");
debug("Ensure that a deleted value is revived if the reviver function returns a value");
shouldBeTrue("result.hasOwnProperty(3)");
function objectReviver(i,v) {
if (i != "") {
currentHolder = this;
shouldBeTrue("currentHolder != globalObject");
if (seen) {
debug("");
debug("Ensure that we get the same holder object for each property");
shouldBe("currentHolder", "lastHolder");
}
seen = true;
switch (i) {
case "a property":
v = undefined;
debug("");
debug("Ensure that the holder already has all the properties present at the start of filtering");
shouldBe("currentHolder['a property']", '"a value"');
shouldBe("currentHolder['another property']", '"another value"');
shouldBe("currentHolder['and another property']", '"and another value"');
shouldBe("currentHolder['to delete']", '"will be deleted"');
break;
case "another property":
debug("");
debug("Ensure that returning undefined has correctly removed the property 'a property' from the holder object");
shouldBeFalse("currentHolder.hasOwnProperty('a property')");
currentHolder['and another property'] = "a replaced value";
break;
case "and another property":
debug("Ensure that changing the value of a property is reflected while filtering.");
shouldBe("currentHolder['and another property']", '"a replaced value"');
value = v;
debug("");
debug("Ensure that the changed value is reflected in the arguments passed to the reviver");
shouldBe("value", '"a replaced value"');
delete this["to delete"];
break;
case "to delete":
debug("");
debug("Ensure that we visited a value that we have deleted, and that deletion is reflected while filtering.");
shouldBeFalse("currentHolder.hasOwnProperty('to delete')");
value = v;
debug("");
debug("Ensure that when visiting a deleted property value is undefined");
shouldBeUndefined("value");
v = "undelete the property";
this["new property"] = "fail";
break;
default:
testFailed("Visited unexpected property " + i + " with value " + v);
}
}
lastHolder = this;
return v;
}
debug("");
debug("Test behaviour of revivor used in conjunction with an object");
var seen = false;
var globalObject = this;
var result = JSON.parse('{"a property" : "a value", "another property" : "another value", "and another property" : "and another value", "to delete" : "will be deleted"}', objectReviver);
debug("");
debug("Ensure that we created the root holder as specified in ES5");
shouldBeTrue("lastHolder.hasOwnProperty('')");
shouldBeFalse("result.hasOwnProperty('a property')");
shouldBeTrue("result.hasOwnProperty('to delete')");
shouldBe("result", "lastHolder['']");
debug("");
debug("Test behaviour of revivor that introduces a cycle");
function reviveAddsCycle(i, v) {
if (i == 0)
this[1] = this;
return v;
}
shouldThrow('JSON.parse("[0,1]", reviveAddsCycle)');
debug("");
debug("Test behaviour of revivor that introduces a new array classed object (the result of a regex)");
var createdBadness = false;
function reviveIntroducesNewArrayLikeObject(i, v) {
if (i == 0 && !createdBadness) {
this[1] = /(a)+/.exec("a");
createdBadness = true;
}
return v;
}
shouldBe('JSON.stringify(JSON.parse("[0,1]", reviveIntroducesNewArrayLikeObject))', '\'[0,["a","a"]]\'');
|
