1 // Copyright 2013 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-iteration --allow-natives-syntax 29 30 function TestArrayPrototype() { 31 assertTrue(Array.prototype.hasOwnProperty('entries')); 32 assertTrue(Array.prototype.hasOwnProperty('values')); 33 assertTrue(Array.prototype.hasOwnProperty('keys')); 34 35 assertFalse(Array.prototype.propertyIsEnumerable('entries')); 36 assertFalse(Array.prototype.propertyIsEnumerable('values')); 37 assertFalse(Array.prototype.propertyIsEnumerable('keys')); 38 } 39 TestArrayPrototype(); 40 41 function assertIteratorResult(value, done, result) { 42 assertEquals({value: value, done: done}, result); 43 } 44 45 function TestValues() { 46 var array = ['a', 'b', 'c']; 47 var iterator = array.values(); 48 assertIteratorResult('a', false, iterator.next()); 49 assertIteratorResult('b', false, iterator.next()); 50 assertIteratorResult('c', false, iterator.next()); 51 assertIteratorResult(void 0, true, iterator.next()); 52 53 array.push('d'); 54 assertIteratorResult(void 0, true, iterator.next()); 55 } 56 TestValues(); 57 58 function TestValuesMutate() { 59 var array = ['a', 'b', 'c']; 60 var iterator = array.values(); 61 assertIteratorResult('a', false, iterator.next()); 62 assertIteratorResult('b', false, iterator.next()); 63 assertIteratorResult('c', false, iterator.next()); 64 array.push('d'); 65 assertIteratorResult('d', false, iterator.next()); 66 assertIteratorResult(void 0, true, iterator.next()); 67 } 68 TestValuesMutate(); 69 70 function TestKeys() { 71 var array = ['a', 'b', 'c']; 72 var iterator = array.keys(); 73 assertIteratorResult(0, false, iterator.next()); 74 assertIteratorResult(1, false, iterator.next()); 75 assertIteratorResult(2, false, iterator.next()); 76 assertIteratorResult(void 0, true, iterator.next()); 77 78 array.push('d'); 79 assertIteratorResult(void 0, true, iterator.next()); 80 } 81 TestKeys(); 82 83 function TestKeysMutate() { 84 var array = ['a', 'b', 'c']; 85 var iterator = array.keys(); 86 assertIteratorResult(0, false, iterator.next()); 87 assertIteratorResult(1, false, iterator.next()); 88 assertIteratorResult(2, false, iterator.next()); 89 array.push('d'); 90 assertIteratorResult(3, false, iterator.next()); 91 assertIteratorResult(void 0, true, iterator.next()); 92 } 93 TestKeysMutate(); 94 95 function TestEntries() { 96 var array = ['a', 'b', 'c']; 97 var iterator = array.entries(); 98 assertIteratorResult([0, 'a'], false, iterator.next()); 99 assertIteratorResult([1, 'b'], false, iterator.next()); 100 assertIteratorResult([2, 'c'], false, iterator.next()); 101 assertIteratorResult(void 0, true, iterator.next()); 102 103 array.push('d'); 104 assertIteratorResult(void 0, true, iterator.next()); 105 } 106 TestEntries(); 107 108 function TestEntriesMutate() { 109 var array = ['a', 'b', 'c']; 110 var iterator = array.entries(); 111 assertIteratorResult([0, 'a'], false, iterator.next()); 112 assertIteratorResult([1, 'b'], false, iterator.next()); 113 assertIteratorResult([2, 'c'], false, iterator.next()); 114 array.push('d'); 115 assertIteratorResult([3, 'd'], false, iterator.next()); 116 assertIteratorResult(void 0, true, iterator.next()); 117 } 118 TestEntriesMutate(); 119 120 function TestArrayIteratorPrototype() { 121 var array = []; 122 var iterator = array.values(); 123 124 var ArrayIterator = iterator.constructor; 125 assertEquals(ArrayIterator.prototype, array.values().__proto__); 126 assertEquals(ArrayIterator.prototype, array.keys().__proto__); 127 assertEquals(ArrayIterator.prototype, array.entries().__proto__); 128 129 assertEquals(Object.prototype, ArrayIterator.prototype.__proto__); 130 131 assertEquals('Array Iterator', %_ClassOf(array.values())); 132 assertEquals('Array Iterator', %_ClassOf(array.keys())); 133 assertEquals('Array Iterator', %_ClassOf(array.entries())); 134 135 var prototypeDescriptor = 136 Object.getOwnPropertyDescriptor(ArrayIterator, 'prototype'); 137 assertFalse(prototypeDescriptor.configurable); 138 assertFalse(prototypeDescriptor.enumerable); 139 assertFalse(prototypeDescriptor.writable); 140 } 141 TestArrayIteratorPrototype(); 142 143 function TestForArrayValues() { 144 var buffer = []; 145 var array = [0, 'a', true, false, null, /* hole */, undefined, NaN]; 146 var i = 0; 147 for (var value of array.values()) { 148 buffer[i++] = value; 149 } 150 151 assertEquals(8, buffer.length); 152 153 for (var i = 0; i < buffer.length - 1; i++) { 154 assertEquals(array[i], buffer[i]); 155 } 156 assertTrue(isNaN(buffer[buffer.length - 1])); 157 } 158 TestForArrayValues(); 159 160 function TestForArrayKeys() { 161 var buffer = []; 162 var array = [0, 'a', true, false, null, /* hole */, undefined, NaN]; 163 var i = 0; 164 for (var key of array.keys()) { 165 buffer[i++] = key; 166 } 167 168 assertEquals(8, buffer.length); 169 170 for (var i = 0; i < buffer.length; i++) { 171 assertEquals(i, buffer[i]); 172 } 173 } 174 TestForArrayKeys(); 175 176 function TestForArrayEntries() { 177 var buffer = []; 178 var array = [0, 'a', true, false, null, /* hole */, undefined, NaN]; 179 var i = 0; 180 for (var entry of array.entries()) { 181 buffer[i++] = entry; 182 } 183 184 assertEquals(8, buffer.length); 185 186 for (var i = 0; i < buffer.length - 1; i++) { 187 assertEquals(array[i], buffer[i][1]); 188 } 189 assertTrue(isNaN(buffer[buffer.length - 1][1])); 190 191 for (var i = 0; i < buffer.length; i++) { 192 assertEquals(i, buffer[i][0]); 193 } 194 } 195 TestForArrayEntries(); 196
