Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1 | // Copyright 2009 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 |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 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. |
| 27 | |
| 28 | // Test ES5 section 15.2.3.4 Object.getOwnPropertyNames. |
| 29 | |
| 30 | // Check simple cases. |
| 31 | var obj = { a: 1, b: 2}; |
| 32 | var propertyNames = Object.getOwnPropertyNames(obj); |
| 33 | propertyNames.sort(); |
| 34 | assertEquals(2, propertyNames.length); |
| 35 | assertEquals("a", propertyNames[0]); |
| 36 | assertEquals("b", propertyNames[1]); |
| 37 | |
| 38 | var obj = { a: function(){}, b: function(){} }; |
| 39 | var propertyNames = Object.getOwnPropertyNames(obj); |
| 40 | propertyNames.sort(); |
| 41 | assertEquals(2, propertyNames.length); |
| 42 | assertEquals("a", propertyNames[0]); |
| 43 | assertEquals("b", propertyNames[1]); |
| 44 | |
| 45 | // Check slow case |
| 46 | var obj = { a: 1, b: 2, c: 3 }; |
| 47 | delete obj.b; |
| 48 | var propertyNames = Object.getOwnPropertyNames(obj) |
| 49 | propertyNames.sort(); |
| 50 | assertEquals(2, propertyNames.length); |
| 51 | assertEquals("a", propertyNames[0]); |
| 52 | assertEquals("c", propertyNames[1]); |
| 53 | |
| 54 | // Check that non-enumerable properties are being returned. |
| 55 | var propertyNames = Object.getOwnPropertyNames([1, 2]); |
| 56 | propertyNames.sort(); |
| 57 | assertEquals(3, propertyNames.length); |
| 58 | assertEquals("0", propertyNames[0]); |
| 59 | assertEquals("1", propertyNames[1]); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 60 | assertEquals("string", typeof propertyNames[0]); |
| 61 | assertEquals("string", typeof propertyNames[1]); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 62 | assertEquals("length", propertyNames[2]); |
| 63 | |
| 64 | // Check that no proto properties are returned. |
| 65 | var obj = { foo: "foo" }; |
| 66 | obj.__proto__ = { bar: "bar" }; |
| 67 | propertyNames = Object.getOwnPropertyNames(obj); |
| 68 | propertyNames.sort(); |
| 69 | assertEquals(1, propertyNames.length); |
| 70 | assertEquals("foo", propertyNames[0]); |
| 71 | |
| 72 | // Check that getter properties are returned. |
| 73 | var obj = {}; |
| 74 | obj.__defineGetter__("getter", function() {}); |
| 75 | propertyNames = Object.getOwnPropertyNames(obj); |
| 76 | propertyNames.sort(); |
| 77 | assertEquals(1, propertyNames.length); |
| 78 | assertEquals("getter", propertyNames[0]); |
| 79 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 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; |
| 89 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 90 | assertEquals(Object.getOwnPropertyNames(4), []); |
| 91 | assertEquals(Object.getOwnPropertyNames("foo"), ["0", "1", "2", "length"]); |
| 92 | assertEquals(Object.getOwnPropertyNames(true), []); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 93 | |
| 94 | try { |
| 95 | Object.getOwnPropertyNames(undefined); |
| 96 | assertTrue(false); |
| 97 | } catch (e) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 98 | assertTrue(/Cannot convert undefined or null to object/.test(e)); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 99 | } |
| 100 | |
| 101 | try { |
| 102 | Object.getOwnPropertyNames(null); |
| 103 | assertTrue(false); |
| 104 | } catch (e) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 105 | assertTrue(/Cannot convert undefined or null to object/.test(e)); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 106 | } |