1// Copyright JS Foundation and other contributors, http://js.foundation
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15var obj = {};
16
17// Test if the toString fails.
18try {
19  obj.propertyIsEnumerable({ toString: function() { throw new ReferenceError ("foo"); } });
20
21  assert (false);
22} catch (e) {
23  assert (e.message === "foo");
24  assert (e instanceof ReferenceError);
25}
26
27// Test if the toObject fails.
28var obj1;
29try {
30  obj1.propertyIsEnumerable("fail");
31
32  assert (false);
33} catch (e) {
34  assert (e instanceof TypeError);
35}
36
37var array = [];
38obj.prop = "bar";
39array[0] = "bar";
40
41assert (obj.propertyIsEnumerable('prop') === true);
42assert (array.propertyIsEnumerable(0) === true);
43
44assert (obj.propertyIsEnumerable('length') === false);
45assert (array.propertyIsEnumerable('length') === false);
46assert (Math.propertyIsEnumerable('random') === false);
47
48// Creating a new property
49Object.defineProperty(obj, 'prop1', { value: 'foo', enumerable: true });
50Object.defineProperty(obj, 'prop2', { value: 'foo', enumerable: false });
51Object.defineProperty(obj, 'prop3', { value: 'foo' });
52assert (obj.propertyIsEnumerable('prop1') === true);
53assert (obj.propertyIsEnumerable('prop2') === false);
54assert (obj.propertyIsEnumerable('prop3') === false);
55
56Object.defineProperty(array, 'prop1', { value: 'foo', enumerable: true });
57Object.defineProperty(array, 'prop2', { value: 'foo', enumerable: false });
58Object.defineProperty(array, 'prop3', { value: 'foo' });
59assert (array.propertyIsEnumerable('prop1') === true);
60assert (array.propertyIsEnumerable('prop2') === false);
61assert (array.propertyIsEnumerable('prop3') === false);
62
63// Modify an existing one
64Object.defineProperty(obj, 'prop', { value: 'foo', enumerable: false });
65assert (obj.propertyIsEnumerable('prop') === false);
66Object.defineProperty(obj, 'prop', { value: 'foo', enumerable: true });
67assert (obj.propertyIsEnumerable('prop') === true);
68
69Object.defineProperty(array, 0, { value: 'foo', enumerable: false });
70assert (array.propertyIsEnumerable(0) === false);
71Object.defineProperty(array, 0, { value: 'foo', enumerable: true });
72assert (array.propertyIsEnumerable(0) === true);
73
74// Enumerability of inherited properties
75function construct1()
76{
77  this.prop1 = 'foo';
78}
79
80function construct2()
81{
82  this.prop2 = 'foo';
83}
84
85construct2.prototype = new construct1;
86construct2.prototype.constructor = construct2;
87
88var obj2 = new construct2();
89obj2.prop3 = 'foo';
90
91assert (obj2.propertyIsEnumerable('prop3') === true);
92assert (obj2.propertyIsEnumerable('prop2') === true);
93assert (obj2.propertyIsEnumerable('prop1') === false);
94
95obj2.prop1 = 'foo';
96
97assert (obj2.propertyIsEnumerable('prop1') === true);
98