source: webkit/trunk/JavaScriptCore/API/testapi.js@ 17017

Last change on this file since 17017 was 15497, checked in by ggaren, 19 years ago

Reviewed by Maciej.


  • Added automatic prototype creation for classes.


A class stores a weak reference to a prototype, which is cleared when
the prototype is garbage collected, to avoid a reference cycle.


We now have an attributes field in JSClassDefinition, that currently is
used only to override automatic prototype creation when you want to manage your
own prototypes, but can be extended in the future for other nefarious purposes.


Similarly, we have JSObjectMake and JSObjectMakeWithPrototype, the latter
allowing you to manage your own prototypes.


JSObjectMakeConstructor is more interesting now, able to make a constructor
on your behalf if you just give it a class.


  • Removed bogus old code from minidom.js.


  • Tweaked the headerdocs.


  • Added more GC testing, which caught some leaks, and tested more funny edge cases in lookup, which caught a lookup bug. Removed some testing we used to do with MyObject because it was redundant with the new, cool stuff.


While fixing the lookup bug I retracted this change:


"If a static setProperty callback returns 'false', to indicate that the
property was not set, we no longer forward the set request up the class
chain, because that's almost certainly not what the programmer expected."

Returning false when setting a static property is a little silly, but you can see
it being useful when shadowing a base class's static properties, and, regardless
of usefullness, this is the defined behavior of the setProperty callback.


  • Plus a little ASCII art, for the kids.
File size: 4.3 KB
Line 
1// -*- mode: c++; c-basic-offset: 4 -*-
2/*
3 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27function shouldBe(a, b)
28{
29 var evalA;
30 try {
31 evalA = eval(a);
32 } catch(e) {
33 evalA = e;
34 }
35
36 if (evalA == b || isNaN(evalA) && typeof evalA == 'number' && isNaN(b) && typeof b == 'number')
37 print("PASS: " + a + " should be " + b + " and is.", "green");
38 else
39 print("__FAIL__: " + a + " should be " + b + " but instead is " + evalA + ".", "red");
40}
41
42function shouldThrow(a)
43{
44 var result = "__FAIL__: " + a + " did not throw an exception.";
45
46 var evalA;
47 try {
48 eval(a);
49 } catch(e) {
50 result = "PASS: " + a + " threw: " + e;
51 }
52
53 print(result);
54}
55
56shouldBe("typeof MyObject", "function"); // our object implements 'call'
57MyObject.cantFind = 1;
58shouldBe("MyObject.cantFind", undefined);
59MyObject.regularType = 1;
60shouldBe("MyObject.regularType", 1);
61MyObject.alwaysOne = 2;
62shouldBe("MyObject.alwaysOne", 1);
63MyObject.cantDelete = 1;
64delete MyObject.cantDelete;
65shouldBe("MyObject.cantDelete", 1);
66shouldBe("delete MyObject.throwOnDelete", 2); // deleteProperty -- should throw 2
67MyObject.cantSet = 1;
68shouldBe("MyObject.cantSet", undefined);
69
70var foundMyPropertyName = false;
71var foundRegularType = false;
72for (var p in MyObject) {
73 if (p == "myPropertyName")
74 foundMyPropertyName = true;
75 if (p == "regularType")
76 foundRegularType = true;
77}
78print(foundMyPropertyName
79 ? "PASS: MyObject.myPropertyName was enumerated"
80 : "__FAIL__: MyObject.myPropertyName was not enumerated");
81print(foundRegularType
82 ? "PASS: MyObject.regularType was enumerated"
83 : "__FAIL__: MyObject.regularType was not enumerated");
84
85myObject = new MyObject();
86
87shouldBe("delete MyObject.regularType", true);
88shouldBe("MyObject.regularType", undefined);
89shouldBe("MyObject(0)", 1);
90shouldBe("MyObject()", undefined);
91shouldBe("typeof myObject", "object");
92shouldBe("MyObject ? 1 : 0", true); // toBoolean
93shouldBe("+MyObject", 1); // toNumber
94shouldBe("(MyObject.toString())", "[object MyObject]"); // toString
95shouldBe("MyObject - 0", NaN); // toPrimitive
96
97shouldBe("typeof MyConstructor", "object");
98constructedObject = new MyConstructor(1);
99shouldBe("typeof constructedObject", "object");
100shouldBe("constructedObject.value", 1);
101shouldBe("myObject instanceof MyObject", true);
102shouldBe("(new Object()) instanceof MyObject", false);
103
104shouldThrow("MyObject.nullGetSet = 1");
105shouldThrow("MyObject.nullGetSet");
106shouldThrow("MyObject.nullCall()");
107shouldThrow("MyObject.hasPropertyLie");
108
109derived = new Derived();
110
111// base properties and functions return 1 when called/gotten; derived, 2
112shouldBe("derived.baseProtoDup()", 2);
113shouldBe("derived.baseProto()", 1);
114shouldBe("derived.baseDup", 2);
115shouldBe("derived.baseOnly", 1);
116shouldBe("derived.protoOnly()", 2);
117shouldBe("derived.protoDup", 2);
118shouldBe("derived.derivedOnly", 2)
119
120// base properties throw 1 when set; derived, 2
121shouldBe("derived.baseDup = 0", 2);
122shouldBe("derived.baseOnly = 0", 1);
123shouldBe("derived.derivedOnly = 0", 2)
124shouldBe("derived.protoDup = 0", 2);
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