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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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