1// Copyright 2013 the V8 project authors. All rights reserved.
2// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions
6// are met:
7// 1.  Redistributions of source code must retain the above copyright
8//     notice, this list of conditions and the following disclaimer.
9// 2.  Redistributions in binary form must reproduce the above copyright
10//     notice, this list of conditions and the following disclaimer in the
11//     documentation and/or other materials provided with the distribution.
12//
13// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
14// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
15// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
16// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
17// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
22// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23
24description(
25"This performs a number of different tests on JavaScript getters and setters."
26);
27
28debug("the get set object declaration syntax");
29var o1 = { 'a':7, get b() { return this.a + 1 }, set b(x) { this.a = x } }
30shouldBe("o1.b", "8");
31o1.b = 10;
32shouldBe("o1.b", "11");
33
34debug("__defineGetter__ and __defineSetter__");
35var o2 = new Object()
36o2.a = 7;
37o2.__defineGetter__('b', function getB() { return this.a + 1} )
38o2.__defineSetter__('b', function setB(x) { this.a = x})
39shouldBe("o2.b", "8");
40o2.b = 10;
41shouldBe("o2.b", "11");
42
43debug("Setting a value without having a setter");
44var o3 = { get x() { return 42; } }
45shouldBe("o3.x = 10; o3.x", "42");
46
47debug("Getting a value without having a getter");
48var o4 = { set x(y) { }}
49shouldBeUndefined("o4.x");
50
51debug("__lookupGetter__ and __lookupSetter__");
52var o4 = new Object()
53function getB() { return this.a }
54function setB(x) { this.a = x }
55o4.__defineGetter__('b', getB)
56o4.__defineSetter__('b', setB)
57
58shouldBe("o4.__lookupGetter__('b')", "getB");
59shouldBe("o4.__lookupSetter__('b')", "setB");
60
61debug("__defineGetter__ and __defineSetter__ with various invalid arguments");
62var numExceptions = 0;
63var o5 = new Object();
64shouldThrow("o5.__defineSetter__('a', null)");
65shouldThrow("o5.__defineSetter__('a', o5)");
66shouldThrow("o5.__defineGetter__('a', null)");
67shouldThrow("o5.__defineGetter__('a', o5)");
68
69debug("setters and getters with exceptions");
70var o6 = { get x() { throw 'Exception in get'}, set x(f) { throw 'Exception in set'}}
71var x = 0;
72var numExceptions = 0;
73shouldThrow("x = o6.x");
74shouldBe("x", "0");
75shouldThrow("o6.x = 42");
76
77debug("Defining a setter should also define a getter for the same property which returns undefined. Thus, a getter defined on the prototype should not be called.");
78o7 = { 'a':7, set x(b) { this.a = b; }}
79o7.prototype = { get x() { return 42; }}
80shouldBeUndefined("o7.x")
81
82debug("If an object has a property and its prototype has a setter function for that property, then setting the property should set the property directly and not call the setter function.");
83var o8 = new Object()
84o8.numSets = 0;
85o8.x = 10;
86o8.__proto__.__defineSetter__('x', function() { this.numSets++; })
87o8.x = 20;
88shouldBe("o8.numSets", "0");
89
90({getter:"foo", b:"bar"});
91testObj=({get getter(){return 'getter was called.'}, b: 'bar'})
92shouldBe("typeof testObj.getter", "'string'");
93
94debug("the get set with string property name");
95var o9 = { 'a':7, get 'b'() { return this.a + 1 }, set 'b'(x) { this.a = x } }
96shouldBe("o9.b", "8");
97o9.b = 10;
98shouldBe("o9.b", "11");
99
100debug("the get set with numeric property name");
101var o10 = { 'a':7, get 42() { return this.a + 1 }, set 42(x) { this.a = x } }
102shouldBe("o10[42]", "8");
103o10[42] = 10;
104shouldBe("o10[42]", "11");
105