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| 1 // Copyright 2014 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 // Flags: --harmony-symbols | |
| 29 | |
| 30 | |
| 31 function getObjects() { | |
| 32 function func() {} | |
| 33 return [ | |
| 34 func, | |
| 35 new func(), | |
| 36 {x: 5}, | |
| 37 /regexp/, | |
| 38 ['array'], | |
| 39 // new Error(), | |
| 40 new Date(), | |
| 41 new Number(1), | |
| 42 new Boolean(true), | |
| 43 new String('str'), | |
| 44 Object(Symbol()) | |
| 45 ]; | |
| 46 } | |
| 47 | |
| 48 | |
| 49 var coercibleValues = [ | |
| 50 1, | |
| 51 true, | |
| 52 'string', | |
| 53 Symbol() | |
| 54 ]; | |
| 55 | |
| 56 | |
| 57 var nonCoercibleValues = [ | |
| 58 undefined, | |
| 59 null | |
| 60 ]; | |
| 61 | |
| 62 | |
| 63 var valuesWithoutNull = coercibleValues.concat(undefined); | |
| 64 | |
| 65 | |
| 66 function TestSetPrototypeOfCoercibleValues() { | |
| 67 for (var i = 0; i < coercibleValues.length; i++) { | |
| 68 var value = coercibleValues[i]; | |
| 69 assertThrows(function() { | |
| 70 Object.getPrototypeOf(value); | |
| 71 }, TypeError); | |
| 72 | |
| 73 assertEquals(Object.setPrototypeOf(value, {}), value); | |
| 74 | |
| 75 assertThrows(function() { | |
| 76 Object.getPrototypeOf(value); | |
| 77 }, TypeError); | |
| 78 } | |
| 79 } | |
| 80 TestSetPrototypeOfCoercibleValues(); | |
| 81 | |
| 82 | |
| 83 function TestSetPrototypeOfNonCoercibleValues() { | |
| 84 for (var i = 0; i < nonCoercibleValues.length; i++) { | |
| 85 var value = nonCoercibleValues[i]; | |
| 86 assertThrows(function() { | |
| 87 Object.setPrototypeOf(value, {}); | |
| 88 }, TypeError); | |
| 89 } | |
| 90 } | |
| 91 TestSetPrototypeOfNonCoercibleValues(); | |
| 92 | |
| 93 | |
| 94 function TestSetPrototypeToNonObject(proto) { | |
| 95 var objects = getObjects(); | |
| 96 for (var i = 0; i < objects.length; i++) { | |
| 97 var object = objects[i]; | |
| 98 for (var j = 0; j < valuesWithoutNull.length; j++) { | |
| 99 var proto = valuesWithoutNull[j]; | |
| 100 assertThrows(function() { | |
| 101 Object.setPrototypeOf(object, proto); | |
| 102 }, TypeError); | |
| 103 } | |
| 104 } | |
| 105 } | |
| 106 TestSetPrototypeToNonObject(); | |
| 107 | |
| 108 | |
| 109 function TestSetPrototypeOf(object, proto) { | |
| 110 assertEquals(Object.setPrototypeOf(object, proto), object); | |
| 111 assertEquals(Object.getPrototypeOf(object), proto); | |
| 112 } | |
| 113 | |
| 114 | |
| 115 function TestSetPrototypeOfForObjects() { | |
| 116 var objects1 = getObjects(); | |
| 117 var objects2 = getObjects(); | |
| 118 for (var i = 0; i < objects1.length; i++) { | |
| 119 for (var j = 0; j < objects2.length; j++) { | |
| 120 TestSetPrototypeOf(objects1[i], objects2[j]); | |
| 121 } | |
| 122 } | |
| 123 } | |
| 124 TestSetPrototypeOfForObjects(); | |
| 125 | |
| 126 | |
| 127 function TestSetPrototypeToNull() { | |
| 128 var objects = getObjects(); | |
| 129 for (var i = 0; i < objects.length; i++) { | |
| 130 TestSetPrototypeOf(objects[i], null); | |
| 131 } | |
| 132 } | |
| 133 TestSetPrototypeToNull(); | |
| 134 | |
| 135 | |
| 136 function TestSetPrototypeOfNonExtensibleObject() { | |
| 137 var objects = getObjects(); | |
| 138 var proto = {}; | |
| 139 for (var i = 0; i < objects.length; i++) { | |
| 140 var object = objects[i]; | |
| 141 Object.preventExtensions(object); | |
| 142 assertThrows(function() { | |
| 143 Object.setPrototypeOf(object, proto); | |
| 144 }, TypeError); | |
| 145 } | |
| 146 } | |
| 147 TestSetPrototypeOfNonExtensibleObject(); | |
| 148 | |
| 149 | |
| 150 function TestLookup() { | |
| 151 var object = {}; | |
| 152 assertFalse('x' in object); | |
| 153 assertFalse('y' in object); | |
| 154 | |
| 155 var oldProto = { | |
| 156 x: 'old x', | |
| 157 y: 'old y' | |
| 158 }; | |
| 159 Object.setPrototypeOf(object, oldProto); | |
| 160 assertEquals(object.x, 'old x'); | |
| 161 assertEquals(object.y, 'old y'); | |
| 162 | |
| 163 var newProto = { | |
| 164 x: 'new x' | |
| 165 }; | |
| 166 Object.setPrototypeOf(object, newProto); | |
| 167 assertEquals(object.x, 'new x'); | |
| 168 assertFalse('y' in object); | |
| 169 } | |
| 170 TestLookup(); | |
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