1 // Copyright 2010 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
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7 // notice, this list of conditions and the following disclaimer.
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9 // copyright notice, this list of conditions and the following
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11 // with the distribution.
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13 // contributors may be used to endorse or promote products derived
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21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 // This file only tests very simple descriptors that always have
29 // configurable, enumerable, and writable set to true.
30 // A range of more elaborate tests are performed in
31 // object-define-property.js
33 function get() { return x; }
34 function set(x) { this.x = x; }
37 obj.__defineGetter__("accessor", get);
38 obj.__defineSetter__("accessor", set);
43 var descIsData = Object.getOwnPropertyDescriptor(obj, 'x');
44 assertTrue(descIsData.enumerable);
45 assertTrue(descIsData.writable);
46 assertTrue(descIsData.configurable);
48 var descIsAccessor = Object.getOwnPropertyDescriptor(obj, 'accessor');
49 assertTrue(descIsAccessor.enumerable);
50 assertTrue(descIsAccessor.configurable);
51 assertTrue(descIsAccessor.get == get);
52 assertTrue(descIsAccessor.set == set);
54 var descIsNotData = Object.getOwnPropertyDescriptor(obj, 'not-x');
55 assertTrue(descIsNotData == undefined);
57 var descIsNotAccessor = Object.getOwnPropertyDescriptor(obj, 'not-accessor');
58 assertTrue(descIsNotAccessor == undefined);
60 var descArray = Object.getOwnPropertyDescriptor(a, '1');
61 assertTrue(descArray.enumerable);
62 assertTrue(descArray.configurable);
63 assertTrue(descArray.writable);
64 assertEquals(descArray.value, 42);
66 var descObjectElement = Object.getOwnPropertyDescriptor(obj, '1');
67 assertTrue(descObjectElement.enumerable);
68 assertTrue(descObjectElement.configurable);
69 assertTrue(descObjectElement.writable);
70 assertEquals(descObjectElement.value, 42);
73 var a = new String('foobar');
74 for (var i = 0; i < a.length; i++) {
75 var descStringObject = Object.getOwnPropertyDescriptor(a, i);
76 assertTrue(descStringObject.enumerable);
77 assertFalse(descStringObject.configurable);
78 assertFalse(descStringObject.writable);
79 assertEquals(descStringObject.value, a.substring(i, i+1));
82 // Support for additional attributes on string objects.
85 var descStringProperty = Object.getOwnPropertyDescriptor(a, 'x');
86 assertTrue(descStringProperty.enumerable);
87 assertTrue(descStringProperty.configurable);
88 assertTrue(descStringProperty.writable);
89 assertEquals(descStringProperty.value, 42);
91 var descStringElement = Object.getOwnPropertyDescriptor(a, '10');
92 assertTrue(descStringElement.enumerable);
93 assertTrue(descStringElement.configurable);
94 assertTrue(descStringElement.writable);
95 assertEquals(descStringElement.value, 'foo');
97 // Test that elements in the prototype chain is not returned.
101 var objWithProto = new Array();
102 objWithProto.prototype = proto;
103 objWithProto[0] = 'bar';
104 var descWithProto = Object.getOwnPropertyDescriptor(objWithProto, '10');
105 assertEquals(undefined, descWithProto);
107 // Test elements on global proxy object.
108 var global = (function() { return this; })();
112 function el_getter() { return 239; };
113 function el_setter() {};
114 Object.defineProperty(global, '239', {get: el_getter, set: el_setter});
116 var descRegularElement = Object.getOwnPropertyDescriptor(global, '42');
117 assertEquals(42, descRegularElement.value);
119 var descAccessorElement = Object.getOwnPropertyDescriptor(global, '239');
120 assertEquals(el_getter, descAccessorElement.get);
121 assertEquals(el_setter, descAccessorElement.set);