1 // Copyright 2012 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
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.
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.
28 // Flags: --expose-gc --allow-natives-syntax --harmony-tostring
31 function assertSize(expected, collection) {
32 if (collection instanceof Map || collection instanceof Set) {
33 assertEquals(expected, collection.size);
38 // Test valid getter and setter calls on Sets and WeakSets
39 function TestValidSetCalls(m) {
40 assertDoesNotThrow(function () { m.add(new Object) });
41 assertDoesNotThrow(function () { m.has(new Object) });
42 assertDoesNotThrow(function () { m.delete(new Object) });
44 TestValidSetCalls(new Set);
45 TestValidSetCalls(new WeakSet);
48 // Test valid getter and setter calls on Maps and WeakMaps
49 function TestValidMapCalls(m) {
50 assertDoesNotThrow(function () { m.get(new Object) });
51 assertDoesNotThrow(function () { m.set(new Object) });
52 assertDoesNotThrow(function () { m.has(new Object) });
53 assertDoesNotThrow(function () { m.delete(new Object) });
55 TestValidMapCalls(new Map);
56 TestValidMapCalls(new WeakMap);
59 // Test invalid getter and setter calls for WeakMap only
60 function TestInvalidCalls(m) {
61 assertThrows(function () { m.get(undefined) }, TypeError);
62 assertThrows(function () { m.set(undefined, 0) }, TypeError);
63 assertThrows(function () { m.get(null) }, TypeError);
64 assertThrows(function () { m.set(null, 0) }, TypeError);
65 assertThrows(function () { m.get(0) }, TypeError);
66 assertThrows(function () { m.set(0, 0) }, TypeError);
67 assertThrows(function () { m.get('a-key') }, TypeError);
68 assertThrows(function () { m.set('a-key', 0) }, TypeError);
70 TestInvalidCalls(new WeakMap);
73 // Test expected behavior for Sets and WeakSets
74 function TestSet(set, key) {
75 assertFalse(set.has(key));
76 assertSame(set, set.add(key));
77 assertTrue(set.has(key));
78 assertTrue(set.delete(key));
79 assertFalse(set.has(key));
80 assertFalse(set.delete(key));
81 assertFalse(set.has(key));
83 function TestSetBehavior(set) {
84 for (var i = 0; i < 20; i++) {
85 TestSet(set, new Object);
87 TestSet(set, i / 100);
88 TestSet(set, 'key-' + i);
90 var keys = [ +0, -0, +Infinity, -Infinity, true, false, null, undefined ];
91 for (var i = 0; i < keys.length; i++) {
92 TestSet(set, keys[i]);
95 TestSetBehavior(new Set);
96 TestSet(new WeakSet, new Object);
99 // Test expected mapping behavior for Maps and WeakMaps
100 function TestMapping(map, key, value) {
101 assertSame(map, map.set(key, value));
102 assertSame(value, map.get(key));
104 function TestMapBehavior1(m) {
105 TestMapping(m, new Object, 23);
106 TestMapping(m, new Object, 'the-value');
107 TestMapping(m, new Object, new Object);
109 TestMapBehavior1(new Map);
110 TestMapBehavior1(new WeakMap);
113 // Test expected mapping behavior for Maps only
114 function TestMapBehavior2(m) {
115 for (var i = 0; i < 20; i++) {
116 TestMapping(m, i, new Object);
117 TestMapping(m, i / 10, new Object);
118 TestMapping(m, 'key-' + i, new Object);
120 // -0 is handled in TestMinusZeroMap
121 var keys = [ 0, +Infinity, -Infinity, true, false, null, undefined ];
122 for (var i = 0; i < keys.length; i++) {
123 TestMapping(m, keys[i], new Object);
126 TestMapBehavior2(new Map);
129 // Test expected querying behavior of Maps and WeakMaps
130 function TestQuery(m) {
131 var key = new Object;
132 var values = [ 'x', 0, +Infinity, -Infinity, true, false, null, undefined ];
133 for (var i = 0; i < values.length; i++) {
134 TestMapping(m, key, values[i]);
135 assertTrue(m.has(key));
136 assertFalse(m.has(new Object));
140 TestQuery(new WeakMap);
143 // Test expected deletion behavior of Maps and WeakMaps
144 function TestDelete(m) {
145 var key = new Object;
146 TestMapping(m, key, 'to-be-deleted');
147 assertTrue(m.delete(key));
148 assertFalse(m.delete(key));
149 assertFalse(m.delete(new Object));
150 assertSame(m.get(key), undefined);
153 TestDelete(new WeakMap);
156 // Test GC of Maps and WeakMaps with entry
157 function TestGC1(m) {
158 var key = new Object;
159 m.set(key, 'not-collected');
161 assertSame('not-collected', m.get(key));
164 TestGC1(new WeakMap);
167 // Test GC of Maps and WeakMaps with chained entries
168 function TestGC2(m) {
169 var head = new Object;
170 for (key = head, i = 0; i < 10; i++, key = m.get(key)) {
171 m.set(key, new Object);
175 for (key = head; key != undefined; key = m.get(key)) {
178 assertEquals(11, count);
181 TestGC2(new WeakMap);
184 // Test property attribute [[Enumerable]]
185 function TestEnumerable(func) {
188 for (var p in x) array.push(p);
191 assertArrayEquals([], props(func));
192 assertArrayEquals([], props(func.prototype));
193 assertArrayEquals([], props(new func()));
197 TestEnumerable(WeakMap);
198 TestEnumerable(WeakSet);
201 // Test arbitrary properties on Maps and WeakMaps
202 function TestArbitrary(m) {
203 function TestProperty(map, property, value) {
204 map[property] = value;
205 assertEquals(value, map[property]);
207 for (var i = 0; i < 20; i++) {
208 TestProperty(m, i, 'val' + i);
209 TestProperty(m, 'foo' + i, 'bar' + i);
211 TestMapping(m, new Object, 'foobar');
213 TestArbitrary(new Map);
214 TestArbitrary(new WeakMap);
217 // Test direct constructor call
218 assertThrows(function() { Set(); }, TypeError);
219 assertThrows(function() { Map(); }, TypeError);
220 assertThrows(function() { WeakMap(); }, TypeError);
221 assertThrows(function() { WeakSet(); }, TypeError);
224 // Test whether NaN values as keys are treated correctly.
226 assertFalse(s.has(NaN));
227 assertFalse(s.has(NaN + 1));
228 assertFalse(s.has(23));
230 assertTrue(s.has(NaN));
231 assertTrue(s.has(NaN + 1));
232 assertFalse(s.has(23));
234 assertFalse(m.has(NaN));
235 assertFalse(m.has(NaN + 1));
236 assertFalse(m.has(23));
237 m.set(NaN, 'a-value');
238 assertTrue(m.has(NaN));
239 assertTrue(m.has(NaN + 1));
240 assertFalse(m.has(23));
243 // Test some common JavaScript idioms for Sets
245 assertTrue(s instanceof Set);
246 assertTrue(Set.prototype.add instanceof Function)
247 assertTrue(Set.prototype.has instanceof Function)
248 assertTrue(Set.prototype.delete instanceof Function)
249 assertTrue(Set.prototype.clear instanceof Function)
252 // Test some common JavaScript idioms for Maps
254 assertTrue(m instanceof Map);
255 assertTrue(Map.prototype.set instanceof Function)
256 assertTrue(Map.prototype.get instanceof Function)
257 assertTrue(Map.prototype.has instanceof Function)
258 assertTrue(Map.prototype.delete instanceof Function)
259 assertTrue(Map.prototype.clear instanceof Function)
262 // Test some common JavaScript idioms for WeakMaps
264 assertTrue(m instanceof WeakMap);
265 assertTrue(WeakMap.prototype.set instanceof Function)
266 assertTrue(WeakMap.prototype.get instanceof Function)
267 assertTrue(WeakMap.prototype.has instanceof Function)
268 assertTrue(WeakMap.prototype.delete instanceof Function)
271 // Test some common JavaScript idioms for WeakSets
273 assertTrue(s instanceof WeakSet);
274 assertTrue(WeakSet.prototype.add instanceof Function)
275 assertTrue(WeakSet.prototype.has instanceof Function)
276 assertTrue(WeakSet.prototype.delete instanceof Function)
279 // Test class of instance and prototype.
280 assertEquals("Set", %_ClassOf(new Set))
281 assertEquals("Object", %_ClassOf(Set.prototype))
282 assertEquals("Map", %_ClassOf(new Map))
283 assertEquals("Object", %_ClassOf(Map.prototype))
284 assertEquals("WeakMap", %_ClassOf(new WeakMap))
285 assertEquals("Object", %_ClassOf(WeakMap.prototype))
286 assertEquals("WeakSet", %_ClassOf(new WeakSet))
287 assertEquals("Object", %_ClassOf(WeakMap.prototype))
290 // Test name of constructor.
291 assertEquals("Set", Set.name);
292 assertEquals("Map", Map.name);
293 assertEquals("WeakMap", WeakMap.name);
294 assertEquals("WeakSet", WeakSet.name);
297 // Test prototype property of Set, Map, WeakMap and WeakSet.
298 function TestPrototype(C) {
299 assertTrue(C.prototype instanceof Object);
305 }, Object.getOwnPropertyDescriptor(C, "prototype"));
309 TestPrototype(WeakMap);
310 TestPrototype(WeakSet);
313 // Test constructor property of the Set, Map, WeakMap and WeakSet prototype.
314 function TestConstructor(C) {
315 assertFalse(C === Object.prototype.constructor);
316 assertSame(C, C.prototype.constructor);
317 assertSame(C, (new C).__proto__.constructor);
318 assertEquals(1, C.length);
320 TestConstructor(Set);
321 TestConstructor(Map);
322 TestConstructor(WeakMap);
323 TestConstructor(WeakSet);
326 // Test the Set, Map, WeakMap and WeakSet global properties themselves.
327 function TestDescriptor(global, C) {
333 }, Object.getOwnPropertyDescriptor(global, C.name));
335 TestDescriptor(this, Set);
336 TestDescriptor(this, Map);
337 TestDescriptor(this, WeakMap);
338 TestDescriptor(this, WeakSet);
341 // Regression test for WeakMap prototype.
342 assertTrue(WeakMap.prototype.constructor === WeakMap)
343 assertTrue(Object.getPrototypeOf(WeakMap.prototype) === Object.prototype)
346 // Regression test for issue 1617: The prototype of the WeakMap constructor
347 // needs to be unique (i.e. different from the one of the Object constructor).
348 assertFalse(WeakMap.prototype === Object.prototype);
349 var o = Object.create({});
350 assertFalse("get" in o);
351 assertFalse("set" in o);
352 assertEquals(undefined, o.get);
353 assertEquals(undefined, o.set);
354 var o = Object.create({}, { myValue: {
360 assertEquals(10, o.myValue);
363 // Regression test for issue 1884: Invoking any of the methods for Harmony
364 // maps, sets, or weak maps, with a wrong type of receiver should be throwing
365 // a proper TypeError.
366 var alwaysBogus = [ undefined, null, true, "x", 23, {} ];
367 var bogusReceiversTestSet = [
368 { proto: Set.prototype,
369 funcs: [ 'add', 'has', 'delete' ],
370 receivers: alwaysBogus.concat([ new Map, new WeakMap, new WeakSet ]),
372 { proto: Map.prototype,
373 funcs: [ 'get', 'set', 'has', 'delete' ],
374 receivers: alwaysBogus.concat([ new Set, new WeakMap, new WeakSet ]),
376 { proto: WeakMap.prototype,
377 funcs: [ 'get', 'set', 'has', 'delete' ],
378 receivers: alwaysBogus.concat([ new Set, new Map, new WeakSet ]),
380 { proto: WeakSet.prototype,
381 funcs: [ 'add', 'has', 'delete' ],
382 receivers: alwaysBogus.concat([ new Set, new Map, new WeakMap ]),
385 function TestBogusReceivers(testSet) {
386 for (var i = 0; i < testSet.length; i++) {
387 var proto = testSet[i].proto;
388 var funcs = testSet[i].funcs;
389 var receivers = testSet[i].receivers;
390 for (var j = 0; j < funcs.length; j++) {
391 var func = proto[funcs[j]];
392 for (var k = 0; k < receivers.length; k++) {
393 assertThrows(function () { func.call(receivers[k], {}) }, TypeError);
398 TestBogusReceivers(bogusReceiversTestSet);
402 // There is a proposed stress-test available at the es-discuss mailing list
403 // which cannot be reasonably automated. Check it out by hand if you like:
404 // https://mail.mozilla.org/pipermail/es-discuss/2011-May/014096.html
407 // Set and Map size getters
408 var setSizeDescriptor = Object.getOwnPropertyDescriptor(Set.prototype, 'size');
409 assertEquals(undefined, setSizeDescriptor.value);
410 assertEquals(undefined, setSizeDescriptor.set);
411 assertTrue(setSizeDescriptor.get instanceof Function);
412 assertEquals(undefined, setSizeDescriptor.get.prototype);
413 assertFalse(setSizeDescriptor.enumerable);
414 assertTrue(setSizeDescriptor.configurable);
417 assertFalse(s.hasOwnProperty('size'));
418 for (var i = 0; i < 10; i++) {
419 assertEquals(i, s.size);
422 for (var i = 9; i >= 0; i--) {
424 assertEquals(i, s.size);
428 var mapSizeDescriptor = Object.getOwnPropertyDescriptor(Map.prototype, 'size');
429 assertEquals(undefined, mapSizeDescriptor.value);
430 assertEquals(undefined, mapSizeDescriptor.set);
431 assertTrue(mapSizeDescriptor.get instanceof Function);
432 assertEquals(undefined, mapSizeDescriptor.get.prototype);
433 assertFalse(mapSizeDescriptor.enumerable);
434 assertTrue(mapSizeDescriptor.configurable);
437 assertFalse(m.hasOwnProperty('size'));
438 for (var i = 0; i < 10; i++) {
439 assertEquals(i, m.size);
442 for (var i = 9; i >= 0; i--) {
444 assertEquals(i, m.size);
452 assertTrue(s.has(42));
453 assertEquals(1, s.size);
455 assertFalse(s.has(42));
456 assertEquals(0, s.size);
464 assertTrue(m.has(42));
465 assertEquals(1, m.size);
467 assertFalse(m.has(42));
468 assertEquals(0, m.size);
472 (function TestMinusZeroSet() {
475 assertSame(0, s.values().next().value);
477 assertEquals(1, s.size);
478 assertTrue(s.has(0));
479 assertTrue(s.has(-0));
483 (function TestMinusZeroMap() {
486 assertSame(0, m.keys().next().value);
488 assertEquals(1, m.size);
489 assertTrue(m.has(0));
490 assertTrue(m.has(-0));
491 assertEquals('plus', m.get(0));
492 assertEquals('plus', m.get(-0));
496 (function TestSetForEachInvalidTypes() {
497 assertThrows(function() {
498 Set.prototype.set.forEach.call({});
502 assertThrows(function() {
508 (function TestSetForEach() {
516 set.forEach(function(v, k, s) {
519 assertSame(this, receiver);
526 } else if (v === 'c') {
532 assertEquals('acdfb', buffer);
536 (function TestSetForEachAddAtEnd() {
542 set.forEach(function(v) {
549 assertEquals('abc', buffer);
553 (function TestSetForEachDeleteNext() {
560 set.forEach(function(v) {
567 assertEquals('ab', buffer);
571 (function TestSetForEachDeleteVisitedAndAddAgain() {
578 set.forEach(function(v) {
582 } else if (v === 'c') {
587 assertEquals('abca', buffer);
591 (function TestSetForEachClear() {
598 set.forEach(function(v) {
607 assertEquals('ade', buffer);
611 (function TestSetForEachNested() {
618 set.forEach(function(v) {
620 set.forEach(function(v) {
628 assertEquals('aaccac', buffer);
632 (function TestSetForEachEarlyExit() {
641 set.forEach(function(v) {
648 assertEquals('a', buffer);
652 (function TestSetForEachGC() {
654 for (var i = 0; i < 100; i++) {
659 set.forEach(function(v) {
665 assertEquals(4950, accumulated);
669 (function TestSetForEachReceiverAsObject() {
670 var set = new Set(["1", "2"]);
672 // Create a new object in each function call when receiver is a
673 // primitive value. See ECMA-262, Annex C.
675 set.forEach(function() { a.push(this) }, "");
676 assertTrue(a[0] !== a[1]);
678 // Do not create a new object otherwise.
680 set.forEach(function() { a.push(this); }, {});
681 assertEquals(a[0], a[1]);
685 (function TestSetForEachReceiverAsObjectInStrictMode() {
686 var set = new Set(["1", "2"]);
688 // In strict mode primitive values should not be coerced to an object.
690 set.forEach(function() { 'use strict'; a.push(this); }, "");
691 assertTrue(a[0] === "" && a[0] === a[1]);
695 (function TestMapForEachInvalidTypes() {
696 assertThrows(function() {
697 Map.prototype.map.forEach.call({});
701 assertThrows(function() {
707 (function TestMapForEach() {
715 map.forEach(function(v, k, m) {
716 assertEquals(map, m);
717 assertEquals(this, receiver);
724 } else if (k === 2) {
730 assertArrayEquals([0, 'a', 2, 'c', 3, 'd', 5, 'f', 1, 'B'], buffer);
734 (function TestMapForEachAddAtEnd() {
740 map.forEach(function(v, k) {
747 assertArrayEquals([0, 'a', 1, 'b', 2, 'c'], buffer);
751 (function TestMapForEachDeleteNext() {
758 map.forEach(function(v, k) {
765 assertArrayEquals([0, 'a', 1, 'b'], buffer);
769 (function TestSetForEachDeleteVisitedAndAddAgain() {
776 map.forEach(function(v, k) {
780 } else if (k === 2) {
785 assertArrayEquals([0, 'a', 1, 'b', 2, 'c', 0, 'a'], buffer);
789 (function TestMapForEachClear() {
796 map.forEach(function(v, k) {
805 assertArrayEquals([0, 'a', 3, 'd', 4, 'e'], buffer);
809 (function TestMapForEachNested() {
816 map.forEach(function(v, k) {
818 map.forEach(function(v, k) {
826 assertArrayEquals([0, 'a', 0, 'a', 2, 'c', 2, 'c', 0, 'a', 2, 'c'], buffer);
830 (function TestMapForEachEarlyExit() {
839 map.forEach(function(v, k) {
846 assertArrayEquals([0, 'a'], buffer);
850 (function TestMapForEachGC() {
852 for (var i = 0; i < 100; i++) {
857 map.forEach(function(v) {
863 assertEquals(4950, accumulated);
867 (function TestMapForEachAllRemovedTransition() {
872 map.forEach(function(v) {
875 for (var i = 1; i < 4; i++) {
881 for (var i = 0; i < 4; i++) {
884 for (var i = 4; i < 8; i++) {
890 assertArrayEquals([0, 1, 2, 3, 4, 5, 6, 7], buffer);
894 (function TestMapForEachClearTransition() {
900 map.forEach(function(v) {
903 for (var j = 0; j < 5; j++) {
910 assertArrayEquals([0, 1, 2, 3, 4], buffer);
914 (function TestMapForEachNestedNonTrivialTransition() {
924 map.forEach(function(v) {
925 if (++i > 10) return;
931 for (var j = 4; j < 10; j++) {
934 for (var j = 4; j < 10; j += 2) {
939 for (var j = 10; j < 20; j++) {
942 for (var j = 10; j < 20; j += 2) {
950 assertArrayEquals([1, 2, 3, 5, 7, 9, 11, 13, 15, 17], buffer);
954 (function TestMapForEachAllRemovedTransitionNoClear() {
959 map.forEach(function(v) {
962 for (var i = 1; i < 8; i++) {
968 for (var i = 0; i < 8; i++) {
974 assertArrayEquals([0, 1, 2, 3, 4], buffer);
978 (function TestMapForEachNoMoreElementsAfterTransition() {
983 map.forEach(function(v) {
986 for (var i = 1; i < 16; i++) {
992 for (var i = 5; i < 16; i++) {
998 assertArrayEquals([0, 1, 2, 3, 4], buffer);
1002 (function TestMapForEachReceiverAsObject() {
1003 var map = new Map();
1004 map.set("key1", "value1");
1005 map.set("key2", "value2");
1007 // Create a new object in each function call when receiver is a
1008 // primitive value. See ECMA-262, Annex C.
1010 map.forEach(function() { a.push(this) }, "");
1011 assertTrue(a[0] !== a[1]);
1013 // Do not create a new object otherwise.
1015 map.forEach(function() { a.push(this); }, {});
1016 assertEquals(a[0], a[1]);
1020 (function TestMapForEachReceiverAsObjectInStrictMode() {
1021 var map = new Map();
1022 map.set("key1", "value1");
1023 map.set("key2", "value2");
1025 // In strict mode primitive values should not be coerced to an object.
1027 map.forEach(function() { 'use strict'; a.push(this); }, "");
1028 assertTrue(a[0] === "" && a[0] === a[1]);
1032 // Allows testing iterator-based constructors easily.
1033 var oneAndTwo = new Map();
1037 oneAndTwo.set(k1, 1);
1038 oneAndTwo.set(k2, 2);
1041 function TestSetConstructor(ctor) {
1042 var s = new ctor(null);
1045 s = new ctor(undefined);
1049 assertThrows(function() {
1052 assertThrows(function() {
1056 // @@iterator not callable
1057 assertThrows(function() {
1059 object[Symbol.iterator] = 42;
1063 // @@iterator result not object
1064 assertThrows(function() {
1066 object[Symbol.iterator] = function() {
1076 s = new ctor(s2.values());
1078 assertTrue(s.has(k0));
1079 assertTrue(s.has(k1));
1080 assertTrue(s.has(k2));
1082 TestSetConstructor(Set);
1083 TestSetConstructor(WeakSet);
1086 function TestSetConstructorAddNotCallable(ctor) {
1087 var originalPrototypeAdd = ctor.prototype.add;
1088 assertThrows(function() {
1089 ctor.prototype.add = 42;
1090 new ctor(oneAndTwo.values());
1092 ctor.prototype.add = originalPrototypeAdd;
1094 TestSetConstructorAddNotCallable(Set);
1095 TestSetConstructorAddNotCallable(WeakSet);
1098 function TestSetConstructorGetAddOnce(ctor) {
1099 var originalPrototypeAdd = ctor.prototype.add;
1100 var getAddCount = 0;
1101 Object.defineProperty(ctor.prototype, 'add', {
1104 return function() {};
1107 var s = new ctor(oneAndTwo.values());
1108 assertEquals(1, getAddCount);
1110 Object.defineProperty(ctor.prototype, 'add', {
1111 value: originalPrototypeAdd,
1115 TestSetConstructorGetAddOnce(Set);
1116 TestSetConstructorGetAddOnce(WeakSet);
1119 function TestSetConstructorAddReplaced(ctor) {
1120 var originalPrototypeAdd = ctor.prototype.add;
1122 ctor.prototype.add = function(value) {
1124 originalPrototypeAdd.call(this, value);
1125 ctor.prototype.add = null;
1127 var s = new ctor(oneAndTwo.keys());
1128 assertEquals(2, addCount);
1130 ctor.prototype.add = originalPrototypeAdd;
1132 TestSetConstructorAddReplaced(Set);
1133 TestSetConstructorAddReplaced(WeakSet);
1136 function TestSetConstructorOrderOfDoneValue(ctor) {
1137 var valueCount = 0, doneCount = 0;
1151 iterator[Symbol.iterator] = function() {
1154 assertThrows(function() {
1157 assertEquals(1, doneCount);
1158 assertEquals(0, valueCount);
1160 TestSetConstructorOrderOfDoneValue(Set);
1161 TestSetConstructorOrderOfDoneValue(WeakSet);
1164 function TestSetConstructorNextNotAnObject(ctor) {
1170 iterator[Symbol.iterator] = function() {
1173 assertThrows(function() {
1177 TestSetConstructorNextNotAnObject(Set);
1178 TestSetConstructorNextNotAnObject(WeakSet);
1181 (function TestWeakSetConstructorNonObjectKeys() {
1182 assertThrows(function() {
1188 function TestSetConstructorIterableValue(ctor) {
1190 // Strict mode is required to prevent implicit wrapping in the getter.
1191 Object.defineProperty(Number.prototype, Symbol.iterator, {
1193 assertEquals('object', typeof this);
1195 return oneAndTwo.keys();
1201 var set = new ctor(42);
1203 assertTrue(set.has(k1));
1204 assertTrue(set.has(k2));
1206 delete Number.prototype[Symbol.iterator];
1208 TestSetConstructorIterableValue(Set);
1209 TestSetConstructorIterableValue(WeakSet);
1212 (function TestSetConstructorStringValue() {
1213 var s = new Set('abc');
1215 assertTrue(s.has('a'));
1216 assertTrue(s.has('b'));
1217 assertTrue(s.has('c'));
1221 function TestMapConstructor(ctor) {
1222 var m = new ctor(null);
1225 m = new ctor(undefined);
1229 assertThrows(function() {
1232 assertThrows(function() {
1236 // @@iterator not callable
1237 assertThrows(function() {
1239 object[Symbol.iterator] = 42;
1243 // @@iterator result not object
1244 assertThrows(function() {
1246 object[Symbol.iterator] = function() {
1256 m = new ctor(m2.entries());
1258 assertEquals('a', m.get(k0));
1259 assertEquals('b', m.get(k1));
1260 assertEquals('c', m.get(k2));
1262 TestMapConstructor(Map);
1263 TestMapConstructor(WeakMap);
1266 function TestMapConstructorSetNotCallable(ctor) {
1267 var originalPrototypeSet = ctor.prototype.set;
1268 assertThrows(function() {
1269 ctor.prototype.set = 42;
1270 new ctor(oneAndTwo.entries());
1272 ctor.prototype.set = originalPrototypeSet;
1274 TestMapConstructorSetNotCallable(Map);
1275 TestMapConstructorSetNotCallable(WeakMap);
1278 function TestMapConstructorGetAddOnce(ctor) {
1279 var originalPrototypeSet = ctor.prototype.set;
1280 var getSetCount = 0;
1281 Object.defineProperty(ctor.prototype, 'set', {
1284 return function() {};
1287 var m = new ctor(oneAndTwo.entries());
1288 assertEquals(1, getSetCount);
1290 Object.defineProperty(ctor.prototype, 'set', {
1291 value: originalPrototypeSet,
1295 TestMapConstructorGetAddOnce(Map);
1296 TestMapConstructorGetAddOnce(WeakMap);
1299 function TestMapConstructorSetReplaced(ctor) {
1300 var originalPrototypeSet = ctor.prototype.set;
1302 ctor.prototype.set = function(key, value) {
1304 originalPrototypeSet.call(this, key, value);
1305 ctor.prototype.set = null;
1307 var m = new ctor(oneAndTwo.entries());
1308 assertEquals(2, setCount);
1310 ctor.prototype.set = originalPrototypeSet;
1312 TestMapConstructorSetReplaced(Map);
1313 TestMapConstructorSetReplaced(WeakMap);
1316 function TestMapConstructorOrderOfDoneValue(ctor) {
1317 var valueCount = 0, doneCount = 0;
1318 function FakeError() {}
1327 throw new FakeError();
1332 iterator[Symbol.iterator] = function() {
1335 assertThrows(function() {
1338 assertEquals(1, doneCount);
1339 assertEquals(0, valueCount);
1341 TestMapConstructorOrderOfDoneValue(Map);
1342 TestMapConstructorOrderOfDoneValue(WeakMap);
1345 function TestMapConstructorNextNotAnObject(ctor) {
1351 iterator[Symbol.iterator] = function() {
1354 assertThrows(function() {
1358 TestMapConstructorNextNotAnObject(Map);
1359 TestMapConstructorNextNotAnObject(WeakMap);
1362 function TestMapConstructorIteratorNotObjectValues(ctor) {
1363 assertThrows(function() {
1364 new ctor(oneAndTwo.values());
1367 TestMapConstructorIteratorNotObjectValues(Map);
1368 TestMapConstructorIteratorNotObjectValues(WeakMap);
1371 (function TestWeakMapConstructorNonObjectKeys() {
1372 assertThrows(function() {
1373 new WeakMap([[1, 2]])
1378 function TestMapConstructorIterableValue(ctor) {
1380 // Strict mode is required to prevent implicit wrapping in the getter.
1381 Object.defineProperty(Number.prototype, Symbol.iterator, {
1383 assertEquals('object', typeof this);
1385 return oneAndTwo.entries();
1391 var map = new ctor(42);
1393 assertEquals(1, map.get(k1));
1394 assertEquals(2, map.get(k2));
1396 delete Number.prototype[Symbol.iterator];
1398 TestMapConstructorIterableValue(Map);
1399 TestMapConstructorIterableValue(WeakMap);
1401 function TestCollectionToString(C) {
1402 assertEquals("[object " + C.name + "]",
1403 Object.prototype.toString.call(new C()));
1405 TestCollectionToString(Map);
1406 TestCollectionToString(Set);
1407 TestCollectionToString(WeakMap);
1408 TestCollectionToString(WeakSet);