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3 // modification, are permitted provided that the following conditions are
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28 // Test ES5 section 15.2.3.4 Object.getOwnPropertyNames.
30 // Check simple cases.
31 var obj = { a: 1, b: 2};
32 var propertyNames = Object.getOwnPropertyNames(obj);
34 assertEquals(2, propertyNames.length);
35 assertEquals("a", propertyNames[0]);
36 assertEquals("b", propertyNames[1]);
38 var obj = { a: function(){}, b: function(){} };
39 var propertyNames = Object.getOwnPropertyNames(obj);
41 assertEquals(2, propertyNames.length);
42 assertEquals("a", propertyNames[0]);
43 assertEquals("b", propertyNames[1]);
46 var obj = { a: 1, b: 2, c: 3 };
48 var propertyNames = Object.getOwnPropertyNames(obj)
50 assertEquals(2, propertyNames.length);
51 assertEquals("a", propertyNames[0]);
52 assertEquals("c", propertyNames[1]);
54 // Check that non-enumerable properties are being returned.
55 var propertyNames = Object.getOwnPropertyNames([1, 2]);
57 assertEquals(3, propertyNames.length);
58 assertEquals("0", propertyNames[0]);
59 assertEquals("1", propertyNames[1]);
60 assertEquals("string", typeof propertyNames[0]);
61 assertEquals("string", typeof propertyNames[1]);
62 assertEquals("length", propertyNames[2]);
64 // Check that no proto properties are returned.
65 var obj = { foo: "foo" };
66 obj.__proto__ = { bar: "bar" };
67 propertyNames = Object.getOwnPropertyNames(obj);
69 assertEquals(1, propertyNames.length);
70 assertEquals("foo", propertyNames[0]);
72 // Check that getter properties are returned.
74 obj.__defineGetter__("getter", function() {});
75 propertyNames = Object.getOwnPropertyNames(obj);
77 assertEquals(1, propertyNames.length);
78 assertEquals("getter", propertyNames[0]);
80 // Check that implementation does not access Array.prototype.
81 var savedConcat = Array.prototype.concat;
82 Array.prototype.concat = function() { return []; }
83 propertyNames = Object.getOwnPropertyNames({0: 'foo', bar: 'baz'});
84 assertEquals(2, propertyNames.length);
85 assertEquals('0', propertyNames[0]);
86 assertEquals('bar', propertyNames[1]);
87 assertSame(Array.prototype, propertyNames.__proto__);
88 Array.prototype.concat = savedConcat;
90 assertEquals(Object.getOwnPropertyNames(4), []);
91 assertEquals(Object.getOwnPropertyNames("foo"), ["0", "1", "2", "length"]);
92 assertEquals(Object.getOwnPropertyNames(true), []);
95 Object.getOwnPropertyNames(undefined);
98 assertTrue(/Cannot convert undefined or null to object/.test(e));
102 Object.getOwnPropertyNames(null);
105 assertTrue(/Cannot convert undefined or null to object/.test(e));