Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 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 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 28 | // Flags: --allow-natives-syntax --harmony-tostring |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 29 | |
| 30 | |
| 31 | var NONE = 0; |
| 32 | var READ_ONLY = 1; |
| 33 | var DONT_ENUM = 2; |
| 34 | var DONT_DELETE = 4; |
| 35 | |
| 36 | |
| 37 | function assertHasOwnProperty(object, name, attrs) { |
| 38 | assertTrue(object.hasOwnProperty(name)); |
| 39 | var desc = Object.getOwnPropertyDescriptor(object, name); |
| 40 | assertEquals(desc.writable, !(attrs & READ_ONLY)); |
| 41 | assertEquals(desc.enumerable, !(attrs & DONT_ENUM)); |
| 42 | assertEquals(desc.configurable, !(attrs & DONT_DELETE)); |
| 43 | } |
| 44 | |
| 45 | |
| 46 | function TestArrayPrototype() { |
| 47 | assertHasOwnProperty(Array.prototype, 'entries', DONT_ENUM); |
| 48 | assertHasOwnProperty(Array.prototype, 'keys', DONT_ENUM); |
| 49 | assertHasOwnProperty(Array.prototype, Symbol.iterator, DONT_ENUM); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 50 | assertEquals('entries', Array.prototype.entries.name); |
| 51 | assertEquals('keys', Array.prototype.keys.name); |
| 52 | assertEquals('values', Array.prototype[Symbol.iterator].name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 53 | } |
| 54 | TestArrayPrototype(); |
| 55 | |
| 56 | |
| 57 | function assertIteratorResult(value, done, result) { |
| 58 | assertEquals({value: value, done: done}, result); |
| 59 | } |
| 60 | |
| 61 | |
| 62 | function TestValues() { |
| 63 | var array = ['a', 'b', 'c']; |
| 64 | var iterator = array[Symbol.iterator](); |
| 65 | assertIteratorResult('a', false, iterator.next()); |
| 66 | assertIteratorResult('b', false, iterator.next()); |
| 67 | assertIteratorResult('c', false, iterator.next()); |
| 68 | assertIteratorResult(void 0, true, iterator.next()); |
| 69 | |
| 70 | array.push('d'); |
| 71 | assertIteratorResult(void 0, true, iterator.next()); |
| 72 | } |
| 73 | TestValues(); |
| 74 | |
| 75 | |
| 76 | function TestValuesMutate() { |
| 77 | var array = ['a', 'b', 'c']; |
| 78 | var iterator = array[Symbol.iterator](); |
| 79 | assertIteratorResult('a', false, iterator.next()); |
| 80 | assertIteratorResult('b', false, iterator.next()); |
| 81 | assertIteratorResult('c', false, iterator.next()); |
| 82 | array.push('d'); |
| 83 | assertIteratorResult('d', false, iterator.next()); |
| 84 | assertIteratorResult(void 0, true, iterator.next()); |
| 85 | } |
| 86 | TestValuesMutate(); |
| 87 | |
| 88 | |
| 89 | function TestKeys() { |
| 90 | var array = ['a', 'b', 'c']; |
| 91 | var iterator = array.keys(); |
| 92 | assertIteratorResult(0, false, iterator.next()); |
| 93 | assertIteratorResult(1, false, iterator.next()); |
| 94 | assertIteratorResult(2, false, iterator.next()); |
| 95 | assertIteratorResult(void 0, true, iterator.next()); |
| 96 | |
| 97 | array.push('d'); |
| 98 | assertIteratorResult(void 0, true, iterator.next()); |
| 99 | } |
| 100 | TestKeys(); |
| 101 | |
| 102 | |
| 103 | function TestKeysMutate() { |
| 104 | var array = ['a', 'b', 'c']; |
| 105 | var iterator = array.keys(); |
| 106 | assertIteratorResult(0, false, iterator.next()); |
| 107 | assertIteratorResult(1, false, iterator.next()); |
| 108 | assertIteratorResult(2, false, iterator.next()); |
| 109 | array.push('d'); |
| 110 | assertIteratorResult(3, false, iterator.next()); |
| 111 | assertIteratorResult(void 0, true, iterator.next()); |
| 112 | } |
| 113 | TestKeysMutate(); |
| 114 | |
| 115 | |
| 116 | function TestEntries() { |
| 117 | var array = ['a', 'b', 'c']; |
| 118 | var iterator = array.entries(); |
| 119 | assertIteratorResult([0, 'a'], false, iterator.next()); |
| 120 | assertIteratorResult([1, 'b'], false, iterator.next()); |
| 121 | assertIteratorResult([2, 'c'], false, iterator.next()); |
| 122 | assertIteratorResult(void 0, true, iterator.next()); |
| 123 | |
| 124 | array.push('d'); |
| 125 | assertIteratorResult(void 0, true, iterator.next()); |
| 126 | } |
| 127 | TestEntries(); |
| 128 | |
| 129 | |
| 130 | function TestEntriesMutate() { |
| 131 | var array = ['a', 'b', 'c']; |
| 132 | var iterator = array.entries(); |
| 133 | assertIteratorResult([0, 'a'], false, iterator.next()); |
| 134 | assertIteratorResult([1, 'b'], false, iterator.next()); |
| 135 | assertIteratorResult([2, 'c'], false, iterator.next()); |
| 136 | array.push('d'); |
| 137 | assertIteratorResult([3, 'd'], false, iterator.next()); |
| 138 | assertIteratorResult(void 0, true, iterator.next()); |
| 139 | } |
| 140 | TestEntriesMutate(); |
| 141 | |
| 142 | |
| 143 | function TestArrayIteratorPrototype() { |
| 144 | var array = []; |
| 145 | var iterator = array.keys(); |
| 146 | |
| 147 | var ArrayIteratorPrototype = iterator.__proto__; |
| 148 | |
| 149 | assertEquals(ArrayIteratorPrototype, array[Symbol.iterator]().__proto__); |
| 150 | assertEquals(ArrayIteratorPrototype, array.keys().__proto__); |
| 151 | assertEquals(ArrayIteratorPrototype, array.entries().__proto__); |
| 152 | |
| 153 | assertEquals(Object.prototype, ArrayIteratorPrototype.__proto__); |
| 154 | |
| 155 | assertEquals('Array Iterator', %_ClassOf(array[Symbol.iterator]())); |
| 156 | assertEquals('Array Iterator', %_ClassOf(array.keys())); |
| 157 | assertEquals('Array Iterator', %_ClassOf(array.entries())); |
| 158 | |
| 159 | assertFalse(ArrayIteratorPrototype.hasOwnProperty('constructor')); |
| 160 | assertArrayEquals(['next'], |
| 161 | Object.getOwnPropertyNames(ArrayIteratorPrototype)); |
| 162 | assertHasOwnProperty(ArrayIteratorPrototype, 'next', DONT_ENUM); |
| 163 | assertHasOwnProperty(ArrayIteratorPrototype, Symbol.iterator, DONT_ENUM); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 164 | |
| 165 | assertEquals("[object Array Iterator]", |
| 166 | Object.prototype.toString.call(iterator)); |
| 167 | assertEquals("Array Iterator", ArrayIteratorPrototype[Symbol.toStringTag]); |
| 168 | var desc = Object.getOwnPropertyDescriptor( |
| 169 | ArrayIteratorPrototype, Symbol.toStringTag); |
| 170 | assertTrue(desc.configurable); |
| 171 | assertFalse(desc.writable); |
| 172 | assertEquals("Array Iterator", desc.value); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 173 | } |
| 174 | TestArrayIteratorPrototype(); |
| 175 | |
| 176 | |
| 177 | function TestForArrayValues() { |
| 178 | var buffer = []; |
| 179 | var array = [0, 'a', true, false, null, /* hole */, undefined, NaN]; |
| 180 | var i = 0; |
| 181 | for (var value of array[Symbol.iterator]()) { |
| 182 | buffer[i++] = value; |
| 183 | } |
| 184 | |
| 185 | assertEquals(8, buffer.length); |
| 186 | |
| 187 | for (var i = 0; i < buffer.length; i++) { |
| 188 | assertSame(array[i], buffer[i]); |
| 189 | } |
| 190 | } |
| 191 | TestForArrayValues(); |
| 192 | |
| 193 | |
| 194 | function TestForArrayKeys() { |
| 195 | var buffer = []; |
| 196 | var array = [0, 'a', true, false, null, /* hole */, undefined, NaN]; |
| 197 | var i = 0; |
| 198 | for (var key of array.keys()) { |
| 199 | buffer[i++] = key; |
| 200 | } |
| 201 | |
| 202 | assertEquals(8, buffer.length); |
| 203 | |
| 204 | for (var i = 0; i < buffer.length; i++) { |
| 205 | assertEquals(i, buffer[i]); |
| 206 | } |
| 207 | } |
| 208 | TestForArrayKeys(); |
| 209 | |
| 210 | |
| 211 | function TestForArrayEntries() { |
| 212 | var buffer = []; |
| 213 | var array = [0, 'a', true, false, null, /* hole */, undefined, NaN]; |
| 214 | var i = 0; |
| 215 | for (var entry of array.entries()) { |
| 216 | buffer[i++] = entry; |
| 217 | } |
| 218 | |
| 219 | assertEquals(8, buffer.length); |
| 220 | |
| 221 | for (var i = 0; i < buffer.length; i++) { |
| 222 | assertSame(array[i], buffer[i][1]); |
| 223 | } |
| 224 | |
| 225 | for (var i = 0; i < buffer.length; i++) { |
| 226 | assertEquals(i, buffer[i][0]); |
| 227 | } |
| 228 | } |
| 229 | TestForArrayEntries(); |
| 230 | |
| 231 | |
| 232 | function TestForArray() { |
| 233 | var buffer = []; |
| 234 | var array = [0, 'a', true, false, null, /* hole */, undefined, NaN]; |
| 235 | var i = 0; |
| 236 | for (var value of array) { |
| 237 | buffer[i++] = value; |
| 238 | } |
| 239 | |
| 240 | assertEquals(8, buffer.length); |
| 241 | |
| 242 | for (var i = 0; i < buffer.length; i++) { |
| 243 | assertSame(array[i], buffer[i]); |
| 244 | } |
| 245 | } |
| 246 | TestForArrayValues(); |
| 247 | |
| 248 | |
| 249 | function TestNonOwnSlots() { |
| 250 | var array = [0]; |
| 251 | var iterator = array[Symbol.iterator](); |
| 252 | var object = {__proto__: iterator}; |
| 253 | |
| 254 | assertThrows(function() { |
| 255 | object.next(); |
| 256 | }, TypeError); |
| 257 | } |
| 258 | TestNonOwnSlots(); |