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// Copyright 2012 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Flags: --expose-gc --allow-natives-syntax
function assertSize(expected, collection) {
if (collection instanceof Map || collection instanceof Set) {
assertEquals(expected, collection.size);
}
}
// Test valid getter and setter calls on Sets and WeakSets
function TestValidSetCalls(m) {
assertDoesNotThrow(function () { m.add(new Object) });
assertDoesNotThrow(function () { m.has(new Object) });
assertDoesNotThrow(function () { m.delete(new Object) });
}
TestValidSetCalls(new Set);
TestValidSetCalls(new WeakSet);
// Test valid getter and setter calls on Maps and WeakMaps
function TestValidMapCalls(m) {
assertDoesNotThrow(function () { m.get(new Object) });
assertDoesNotThrow(function () { m.set(new Object) });
assertDoesNotThrow(function () { m.has(new Object) });
assertDoesNotThrow(function () { m.delete(new Object) });
assertDoesNotThrow(function () { m.get(undefined) });
assertDoesNotThrow(function () { m.get(null) });
assertDoesNotThrow(function () { m.get(0) });
assertDoesNotThrow(function () { m.get('a-key') });
assertDoesNotThrow(function () { m.get(Symbol()) });
assertDoesNotThrow(function () { m.has(undefined) });
assertDoesNotThrow(function () { m.has(null) });
assertDoesNotThrow(function () { m.has(0) });
assertDoesNotThrow(function () { m.has('a-key') });
assertDoesNotThrow(function () { m.has(Symbol()) });
assertDoesNotThrow(function () { m.delete(undefined) });
assertDoesNotThrow(function () { m.delete(null) });
assertDoesNotThrow(function () { m.delete(0) });
assertDoesNotThrow(function () { m.delete('a-key') });
assertDoesNotThrow(function () { m.delete(Symbol()) });
}
TestValidMapCalls(new Map);
TestValidMapCalls(new WeakMap);
// Test invalid getter and setter calls for WeakMap only
function TestInvalidCalls(m) {
assertThrows(function () { m.set(undefined, 0) }, TypeError);
assertThrows(function () { m.set(null, 0) }, TypeError);
assertThrows(function () { m.set(0, 0) }, TypeError);
assertThrows(function () { m.set('a-key', 0) }, TypeError);
assertThrows(function () { m.set(Symbol(), 0) }, TypeError);
}
TestInvalidCalls(new WeakMap);
// Test expected behavior for Sets and WeakSets
function TestSet(set, key) {
assertFalse(set.has(key));
assertFalse(set.delete(key));
if (typeof key === 'object' && !(set instanceof WeakSet)) {
assertSame(set, set.add(key));
assertTrue(set.has(key));
assertTrue(set.delete(key));
}
assertFalse(set.has(key));
assertFalse(set.delete(key));
assertFalse(set.has(key));
}
function TestSetBehavior(set) {
// Fill
for (var i = 0; i < 20; i++) {
TestSet(set, new Object);
TestSet(set, i);
TestSet(set, i / 100);
TestSet(set, 'key-' + i);
TestSet(set, Symbol(i));
}
var keys = [
-0, +0, 1, 1/3, 10, +Infinity, -Infinity, NaN, true, false, null, undefined,
'x', Symbol(), {}, function(){}
];
for (var i = 0; i < keys.length; i++) {
TestSet(set, keys[i]);
}
}
TestSetBehavior(new Set);
TestSetBehavior(new WeakSet);
// Test expected mapping behavior for Maps and WeakMaps
function TestMapping(map, key, value) {
assertFalse(map.has(key));
assertSame(undefined, map.get(key));
assertFalse(map.delete(key));
if (typeof key === 'object' && !(map instanceof WeakMap)) {
assertSame(map, map.set(key, value));
assertSame(value, map.get(key));
assertTrue(map.has(key));
assertTrue(map.delete(key));
}
assertFalse(map.has(key));
assertSame(undefined, map.get(key));
assertFalse(map.delete(key));
assertFalse(map.has(key));
assertSame(undefined, map.get(key));
}
function TestMapBehavior(m) {
// Fill
TestMapping(m, new Object, 23);
TestMapping(m, new Object, 'the-value');
TestMapping(m, new Object, new Object);
for (var i = 0; i < 20; i++) {
TestMapping(m, i, new Object);
TestMapping(m, i / 10, new Object);
TestMapping(m, 'key-' + i, new Object);
TestMapping(m, Symbol(i), new Object);
}
var keys = [
-0, +0, 1, 1/3, 10, +Infinity, -Infinity, NaN, true, false, null, undefined,
'x', Symbol(), {}, function(){}
];
for (var i = 0; i < keys.length; i++) {
TestMapping(m, keys[i], 23);
TestMapping(m, keys[i], 'the-value');
TestMapping(m, keys[i], new Object);
}
}
TestMapBehavior(new Map);
TestMapBehavior(new WeakMap);
// Test expected querying behavior of Maps and WeakMaps
function TestQuery(m) {
var key = new Object;
var values = [ 'x', 0, +Infinity, -Infinity, true, false, null, undefined ];
for (var i = 0; i < values.length; i++) {
TestMapping(m, key, values[i]);
}
}
TestQuery(new Map);
TestQuery(new WeakMap);
// Test expected deletion behavior of Maps and WeakMaps
function TestDelete(m) {
var key = new Object;
TestMapping(m, key, 'to-be-deleted');
assertFalse(m.delete(key));
assertFalse(m.delete(new Object));
assertSame(m.get(key), undefined);
}
TestDelete(new Map);
TestDelete(new WeakMap);
// Test GC of Maps and WeakMaps with entry
function TestGC1(m) {
var key = new Object;
m.set(key, 'not-collected');
gc();
assertSame('not-collected', m.get(key));
}
TestGC1(new Map);
TestGC1(new WeakMap);
// Test GC of Maps and WeakMaps with chained entries
function TestGC2(m) {
var head = new Object;
for (key = head, i = 0; i < 10; i++, key = m.get(key)) {
m.set(key, new Object);
}
gc();
var count = 0;
for (key = head; key != undefined; key = m.get(key)) {
count++;
}
assertEquals(11, count);
}
TestGC2(new Map);
TestGC2(new WeakMap);
// Test property attribute [[Enumerable]]
function TestEnumerable(func) {
function props(x) {
var array = [];
for (var p in x) array.push(p);
return array.sort();
}
assertArrayEquals([], props(func));
assertArrayEquals([], props(func.prototype));
assertArrayEquals([], props(new func()));
}
TestEnumerable(Set);
TestEnumerable(Map);
TestEnumerable(WeakMap);
TestEnumerable(WeakSet);
// Test arbitrary properties on Maps and WeakMaps
function TestArbitrary(m) {
function TestProperty(map, property, value) {
map[property] = value;
assertEquals(value, map[property]);
}
for (var i = 0; i < 20; i++) {
TestProperty(m, i, 'val' + i);
TestProperty(m, 'foo' + i, 'bar' + i);
}
TestMapping(m, new Object, 'foobar');
}
TestArbitrary(new Map);
TestArbitrary(new WeakMap);
// Test direct constructor call
assertThrows(function() { Set(); }, TypeError);
assertThrows(function() { Map(); }, TypeError);
assertThrows(function() { WeakMap(); }, TypeError);
assertThrows(function() { WeakSet(); }, TypeError);
// Test whether NaN values as keys are treated correctly.
var s = new Set;
assertFalse(s.has(NaN));
assertFalse(s.has(NaN + 1));
assertFalse(s.has(23));
s.add(NaN);
assertTrue(s.has(NaN));
assertTrue(s.has(NaN + 1));
assertFalse(s.has(23));
var m = new Map;
assertFalse(m.has(NaN));
assertFalse(m.has(NaN + 1));
assertFalse(m.has(23));
m.set(NaN, 'a-value');
assertTrue(m.has(NaN));
assertTrue(m.has(NaN + 1));
assertFalse(m.has(23));
// Test some common JavaScript idioms for Sets
var s = new Set;
assertTrue(s instanceof Set);
assertTrue(Set.prototype.add instanceof Function)
assertTrue(Set.prototype.has instanceof Function)
assertTrue(Set.prototype.delete instanceof Function)
assertTrue(Set.prototype.clear instanceof Function)
// Test some common JavaScript idioms for Maps
var m = new Map;
assertTrue(m instanceof Map);
assertTrue(Map.prototype.set instanceof Function)
assertTrue(Map.prototype.get instanceof Function)
assertTrue(Map.prototype.has instanceof Function)
assertTrue(Map.prototype.delete instanceof Function)
assertTrue(Map.prototype.clear instanceof Function)
// Test some common JavaScript idioms for WeakMaps
var m = new WeakMap;
assertTrue(m instanceof WeakMap);
assertTrue(WeakMap.prototype.set instanceof Function)
assertTrue(WeakMap.prototype.get instanceof Function)
assertTrue(WeakMap.prototype.has instanceof Function)
assertTrue(WeakMap.prototype.delete instanceof Function)
// Test some common JavaScript idioms for WeakSets
var s = new WeakSet;
assertTrue(s instanceof WeakSet);
assertTrue(WeakSet.prototype.add instanceof Function)
assertTrue(WeakSet.prototype.has instanceof Function)
assertTrue(WeakSet.prototype.delete instanceof Function)
// Test name of constructor.
assertEquals("Set", Set.name);
assertEquals("Map", Map.name);
assertEquals("WeakMap", WeakMap.name);
assertEquals("WeakSet", WeakSet.name);
// Test prototype property of Set, Map, WeakMap and WeakSet.
function TestPrototype(C) {
assertTrue(C.prototype instanceof Object);
assertEquals({
value: C.prototype,
writable: false,
enumerable: false,
configurable: false
}, Object.getOwnPropertyDescriptor(C, "prototype"));
}
TestPrototype(Set);
TestPrototype(Map);
TestPrototype(WeakMap);
TestPrototype(WeakSet);
// Test constructor property of the Set, Map, WeakMap and WeakSet prototype.
function TestConstructor(C) {
assertFalse(C === Object.prototype.constructor);
assertSame(C, C.prototype.constructor);
assertSame(C, (new C).__proto__.constructor);
assertEquals(0, C.length);
}
TestConstructor(Set);
TestConstructor(Map);
TestConstructor(WeakMap);
TestConstructor(WeakSet);
// Test the Set, Map, WeakMap and WeakSet global properties themselves.
function TestDescriptor(global, C) {
assertEquals({
value: C,
writable: true,
enumerable: false,
configurable: true
}, Object.getOwnPropertyDescriptor(global, C.name));
}
TestDescriptor(this, Set);
TestDescriptor(this, Map);
TestDescriptor(this, WeakMap);
TestDescriptor(this, WeakSet);
// Regression test for WeakMap prototype.
assertTrue(WeakMap.prototype.constructor === WeakMap)
assertTrue(Object.getPrototypeOf(WeakMap.prototype) === Object.prototype)
// Regression test for issue 1617: The prototype of the WeakMap constructor
// needs to be unique (i.e. different from the one of the Object constructor).
assertFalse(WeakMap.prototype === Object.prototype);
var o = Object.create({});
assertFalse("get" in o);
assertFalse("set" in o);
assertEquals(undefined, o.get);
assertEquals(undefined, o.set);
var o = Object.create({}, { myValue: {
value: 10,
enumerable: false,
configurable: true,
writable: true
}});
assertEquals(10, o.myValue);
// Regression test for issue 1884: Invoking any of the methods for Harmony
// maps, sets, or weak maps, with a wrong type of receiver should be throwing
// a proper TypeError.
var alwaysBogus = [ undefined, null, true, "x", 23, {} ];
var bogusReceiversTestSet = [
{ proto: Set.prototype,
funcs: [ 'add', 'has', 'delete' ],
receivers: alwaysBogus.concat([ new Map, new WeakMap, new WeakSet ]),
},
{ proto: Map.prototype,
funcs: [ 'get', 'set', 'has', 'delete' ],
receivers: alwaysBogus.concat([ new Set, new WeakMap, new WeakSet ]),
},
{ proto: WeakMap.prototype,
funcs: [ 'get', 'set', 'has', 'delete' ],
receivers: alwaysBogus.concat([ new Set, new Map, new WeakSet ]),
},
{ proto: WeakSet.prototype,
funcs: [ 'add', 'has', 'delete' ],
receivers: alwaysBogus.concat([ new Set, new Map, new WeakMap ]),
},
];
function TestBogusReceivers(testSet) {
for (var i = 0; i < testSet.length; i++) {
var proto = testSet[i].proto;
var funcs = testSet[i].funcs;
var receivers = testSet[i].receivers;
for (var j = 0; j < funcs.length; j++) {
var func = proto[funcs[j]];
for (var k = 0; k < receivers.length; k++) {
assertThrows(function () { func.call(receivers[k], {}) }, TypeError);
}
}
}
}
TestBogusReceivers(bogusReceiversTestSet);
// Stress Test
// There is a proposed stress-test available at the es-discuss mailing list
// which cannot be reasonably automated. Check it out by hand if you like:
// https://mail.mozilla.org/pipermail/es-discuss/2011-May/014096.html
// Set and Map size getters
var setSizeDescriptor = Object.getOwnPropertyDescriptor(Set.prototype, 'size');
assertEquals(undefined, setSizeDescriptor.value);
assertEquals(undefined, setSizeDescriptor.set);
assertTrue(setSizeDescriptor.get instanceof Function);
assertEquals(undefined, setSizeDescriptor.get.prototype);
assertFalse(setSizeDescriptor.enumerable);
assertTrue(setSizeDescriptor.configurable);
assertEquals('get size', setSizeDescriptor.get.name);
var s = new Set();
assertFalse(s.hasOwnProperty('size'));
for (var i = 0; i < 10; i++) {
assertEquals(i, s.size);
s.add(i);
}
for (var i = 9; i >= 0; i--) {
s.delete(i);
assertEquals(i, s.size);
}
var mapSizeDescriptor = Object.getOwnPropertyDescriptor(Map.prototype, 'size');
assertEquals(undefined, mapSizeDescriptor.value);
assertEquals(undefined, mapSizeDescriptor.set);
assertTrue(mapSizeDescriptor.get instanceof Function);
assertEquals(undefined, mapSizeDescriptor.get.prototype);
assertFalse(mapSizeDescriptor.enumerable);
assertTrue(mapSizeDescriptor.configurable);
assertEquals('get size', mapSizeDescriptor.get.name);
var m = new Map();
assertFalse(m.hasOwnProperty('size'));
for (var i = 0; i < 10; i++) {
assertEquals(i, m.size);
m.set(i, i);
}
for (var i = 9; i >= 0; i--) {
m.delete(i);
assertEquals(i, m.size);
}
// Test Set clear
(function() {
var s = new Set();
s.add(42);
assertTrue(s.has(42));
assertEquals(1, s.size);
s.clear();
assertFalse(s.has(42));
assertEquals(0, s.size);
})();
// Test Map clear
(function() {
var m = new Map();
m.set(42, true);
assertTrue(m.has(42));
assertEquals(1, m.size);
m.clear();
assertFalse(m.has(42));
assertEquals(0, m.size);
})();
(function TestMinusZeroSet() {
var s = new Set();
s.add(-0);
assertSame(0, s.values().next().value);
s.add(0);
assertEquals(1, s.size);
assertTrue(s.has(0));
assertTrue(s.has(-0));
})();
(function TestMinusZeroMap() {
var m = new Map();
m.set(-0, 'minus');
assertSame(0, m.keys().next().value);
m.set(0, 'plus');
assertEquals(1, m.size);
assertTrue(m.has(0));
assertTrue(m.has(-0));
assertEquals('plus', m.get(0));
assertEquals('plus', m.get(-0));
})();
(function TestSetForEachInvalidTypes() {
assertThrows(function() {
Set.prototype.set.forEach.call({});
}, TypeError);
var set = new Set();
assertThrows(function() {
set.forEach({});
}, TypeError);
})();
(function TestSetForEach() {
var set = new Set();
set.add('a');
set.add('b');
set.add('c');
var buffer = '';
var receiver = {};
set.forEach(function(v, k, s) {
assertSame(v, k);
assertSame(set, s);
assertSame(this, receiver);
buffer += v;
if (v === 'a') {
set.delete('b');
set.add('d');
set.add('e');
set.add('f');
} else if (v === 'c') {
set.add('b');
set.delete('e');
}
}, receiver);
assertEquals('acdfb', buffer);
})();
(function TestSetForEachAddAtEnd() {
var set = new Set();
set.add('a');
set.add('b');
var buffer = '';
set.forEach(function(v) {
buffer += v;
if (v === 'b') {
set.add('c');
}
});
assertEquals('abc', buffer);
})();
(function TestSetForEachDeleteNext() {
var set = new Set();
set.add('a');
set.add('b');
set.add('c');
var buffer = '';
set.forEach(function(v) {
buffer += v;
if (v === 'b') {
set.delete('c');
}
});
assertEquals('ab', buffer);
})();
(function TestSetForEachDeleteVisitedAndAddAgain() {
var set = new Set();
set.add('a');
set.add('b');
set.add('c');
var buffer = '';
set.forEach(function(v) {
buffer += v;
if (v === 'b') {
set.delete('a');
} else if (v === 'c') {
set.add('a');
}
});
assertEquals('abca', buffer);
})();
(function TestSetForEachClear() {
var set = new Set();
set.add('a');
set.add('b');
set.add('c');
var buffer = '';
set.forEach(function(v) {
buffer += v;
if (v === 'a') {
set.clear();
set.add('d');
set.add('e');
}
});
assertEquals('ade', buffer);
})();
(function TestSetForEachNested() {
var set = new Set();
set.add('a');
set.add('b');
set.add('c');
var buffer = '';
set.forEach(function(v) {
buffer += v;
set.forEach(function(v) {
buffer += v;
if (v === 'a') {
set.delete('b');
}
});
});
assertEquals('aaccac', buffer);
})();
(function TestSetForEachEarlyExit() {
var set = new Set();
set.add('a');
set.add('b');
set.add('c');
var buffer = '';
var ex = {};
try {
set.forEach(function(v) {
buffer += v;
throw ex;
});
} catch (e) {
assertEquals(ex, e);
}
assertEquals('a', buffer);
})();
(function TestSetForEachGC() {
var set = new Set();
for (var i = 0; i < 100; i++) {
set.add(i);
}
var accumulated = 0;
set.forEach(function(v) {
accumulated += v;
if (v % 10 === 0) {
gc();
}
});
assertEquals(4950, accumulated);
})();
(function TestSetForEachReceiverAsObject() {
var set = new Set(["1", "2"]);
// Create a new object in each function call when receiver is a
// primitive value. See ECMA-262, Annex C.
var a = [];
set.forEach(function() { a.push(this) }, "");
assertTrue(a[0] !== a[1]);
// Do not create a new object otherwise.
a = [];
set.forEach(function() { a.push(this); }, {});
assertEquals(a[0], a[1]);
})();
(function TestSetForEachReceiverAsObjectInStrictMode() {
var set = new Set(["1", "2"]);
// In strict mode primitive values should not be coerced to an object.
var a = [];
set.forEach(function() { 'use strict'; a.push(this); }, "");
assertTrue(a[0] === "" && a[0] === a[1]);
})();
(function TestMapForEachInvalidTypes() {
assertThrows(function() {
Map.prototype.map.forEach.call({});
}, TypeError);
var map = new Map();
assertThrows(function() {
map.forEach({});
}, TypeError);
})();
(function TestMapForEach() {
var map = new Map();
map.set(0, 'a');
map.set(1, 'b');
map.set(2, 'c');
var buffer = [];
var receiver = {};
map.forEach(function(v, k, m) {
assertEquals(map, m);
assertEquals(this, receiver);
buffer.push(k, v);
if (k === 0) {
map.delete(1);
map.set(3, 'd');
map.set(4, 'e');
map.set(5, 'f');
} else if (k === 2) {
map.set(1, 'B');
map.delete(4);
}
}, receiver);
assertArrayEquals([0, 'a', 2, 'c', 3, 'd', 5, 'f', 1, 'B'], buffer);
})();
(function TestMapForEachAddAtEnd() {
var map = new Map();
map.set(0, 'a');
map.set(1, 'b');
var buffer = [];
map.forEach(function(v, k) {
buffer.push(k, v);
if (k === 1) {
map.set(2, 'c');
}
});
assertArrayEquals([0, 'a', 1, 'b', 2, 'c'], buffer);
})();
(function TestMapForEachDeleteNext() {
var map = new Map();
map.set(0, 'a');
map.set(1, 'b');
map.set(2, 'c');
var buffer = [];
map.forEach(function(v, k) {
buffer.push(k, v);
if (k === 1) {
map.delete(2);
}
});
assertArrayEquals([0, 'a', 1, 'b'], buffer);
})();
(function TestSetForEachDeleteVisitedAndAddAgain() {
var map = new Map();
map.set(0, 'a');
map.set(1, 'b');
map.set(2, 'c');
var buffer = [];
map.forEach(function(v, k) {
buffer.push(k, v);
if (k === 1) {
map.delete(0);
} else if (k === 2) {
map.set(0, 'a');
}
});
assertArrayEquals([0, 'a', 1, 'b', 2, 'c', 0, 'a'], buffer);
})();
(function TestMapForEachClear() {
var map = new Map();
map.set(0, 'a');
map.set(1, 'b');
map.set(2, 'c');
var buffer = [];
map.forEach(function(v, k) {
buffer.push(k, v);
if (k === 0) {
map.clear();
map.set(3, 'd');
map.set(4, 'e');
}
});
assertArrayEquals([0, 'a', 3, 'd', 4, 'e'], buffer);
})();
(function TestMapForEachNested() {
var map = new Map();
map.set(0, 'a');
map.set(1, 'b');
map.set(2, 'c');
var buffer = [];
map.forEach(function(v, k) {
buffer.push(k, v);
map.forEach(function(v, k) {
buffer.push(k, v);
if (k === 0) {
map.delete(1);
}
});
});
assertArrayEquals([0, 'a', 0, 'a', 2, 'c', 2, 'c', 0, 'a', 2, 'c'], buffer);
})();
(function TestMapForEachEarlyExit() {
var map = new Map();
map.set(0, 'a');
map.set(1, 'b');
map.set(2, 'c');
var buffer = [];
var ex = {};
try {
map.forEach(function(v, k) {
buffer.push(k, v);
throw ex;
});
} catch (e) {
assertEquals(ex, e);
}
assertArrayEquals([0, 'a'], buffer);
})();
(function TestMapForEachGC() {
var map = new Map();
for (var i = 0; i < 100; i++) {
map.set(i, i);
}
var accumulated = 0;
map.forEach(function(v) {
accumulated += v;
if (v % 10 === 0) {
gc();
}
});
assertEquals(4950, accumulated);
})();
(function TestMapForEachAllRemovedTransition() {
var map = new Map;
map.set(0, 0);
var buffer = [];
map.forEach(function(v) {
buffer.push(v);
if (v === 0) {
for (var i = 1; i < 4; i++) {
map.set(i, i);
}
}
if (v === 3) {
for (var i = 0; i < 4; i++) {
map.delete(i);
}
for (var i = 4; i < 8; i++) {
map.set(i, i);
}
}
});
assertArrayEquals([0, 1, 2, 3, 4, 5, 6, 7], buffer);
})();
(function TestMapForEachClearTransition() {
var map = new Map;
map.set(0, 0);
var i = 0;
var buffer = [];
map.forEach(function(v) {
buffer.push(v);
if (++i < 5) {
for (var j = 0; j < 5; j++) {
map.clear();
map.set(i, i);
}
}
});
assertArrayEquals([0, 1, 2, 3, 4], buffer);
})();
(function TestMapForEachNestedNonTrivialTransition() {
var map = new Map;
map.set(0, 0);
map.set(1, 1);
map.set(2, 2);
map.set(3, 3);
map.delete(0);
var i = 0;
var buffer = [];
map.forEach(function(v) {
if (++i > 10) return;
buffer.push(v);
if (v == 3) {
map.delete(1);
for (var j = 4; j < 10; j++) {
map.set(j, j);
}
for (var j = 4; j < 10; j += 2) {
map.delete(j);
}
map.delete(2);
for (var j = 10; j < 20; j++) {
map.set(j, j);
}
for (var j = 10; j < 20; j += 2) {
map.delete(j);
}
map.delete(3);
}
});
assertArrayEquals([1, 2, 3, 5, 7, 9, 11, 13, 15, 17], buffer);
})();
(function TestMapForEachAllRemovedTransitionNoClear() {
var map = new Map;
map.set(0, 0);
var buffer = [];
map.forEach(function(v) {
buffer.push(v);
if (v === 0) {
for (var i = 1; i < 8; i++) {
map.set(i, i);
}
}
if (v === 4) {
for (var i = 0; i < 8; i++) {
map.delete(i);
}
}
});
assertArrayEquals([0, 1, 2, 3, 4], buffer);
})();
(function TestMapForEachNoMoreElementsAfterTransition() {
var map = new Map;
map.set(0, 0);
var buffer = [];
map.forEach(function(v) {
buffer.push(v);
if (v === 0) {
for (var i = 1; i < 16; i++) {
map.set(i, i);
}
}
if (v === 4) {
for (var i = 5; i < 16; i++) {
map.delete(i);
}
}
});
assertArrayEquals([0, 1, 2, 3, 4], buffer);
})();
(function TestMapForEachReceiverAsObject() {
var map = new Map();
map.set("key1", "value1");
map.set("key2", "value2");
// Create a new object in each function call when receiver is a
// primitive value. See ECMA-262, Annex C.
var a = [];
map.forEach(function() { a.push(this) }, "");
assertTrue(a[0] !== a[1]);
// Do not create a new object otherwise.
a = [];
map.forEach(function() { a.push(this); }, {});
assertEquals(a[0], a[1]);
})();
(function TestMapForEachReceiverAsObjectInStrictMode() {
var map = new Map();
map.set("key1", "value1");
map.set("key2", "value2");
// In strict mode primitive values should not be coerced to an object.
var a = [];
map.forEach(function() { 'use strict'; a.push(this); }, "");
assertTrue(a[0] === "" && a[0] === a[1]);
})();
// Allows testing iterator-based constructors easily.
var oneAndTwo = new Map();
var k0 = {key: 0};
var k1 = {key: 1};
var k2 = {key: 2};
oneAndTwo.set(k1, 1);
oneAndTwo.set(k2, 2);
function TestSetConstructor(ctor) {
var s = new ctor(null);
assertSize(0, s);
s = new ctor(undefined);
assertSize(0, s);
// No @@iterator
assertThrows(function() {
new ctor({});
}, TypeError);
assertThrows(function() {
new ctor(true);
}, TypeError);
// @@iterator not callable
assertThrows(function() {
var object = {};
object[Symbol.iterator] = 42;
new ctor(object);
}, TypeError);
// @@iterator result not object
assertThrows(function() {
var object = {};
object[Symbol.iterator] = function() {
return 42;
};
new ctor(object);
}, TypeError);
var s2 = new Set();
s2.add(k0);
s2.add(k1);
s2.add(k2);
s = new ctor(s2.values());
assertSize(3, s);
assertTrue(s.has(k0));
assertTrue(s.has(k1));
assertTrue(s.has(k2));
}
TestSetConstructor(Set);
TestSetConstructor(WeakSet);
function TestSetConstructorAddNotCallable(ctor) {
var originalPrototypeAdd = ctor.prototype.add;
assertThrows(function() {
ctor.prototype.add = 42;
new ctor(oneAndTwo.values());
}, TypeError);
ctor.prototype.add = originalPrototypeAdd;
}
TestSetConstructorAddNotCallable(Set);
TestSetConstructorAddNotCallable(WeakSet);
function TestSetConstructorGetAddOnce(ctor) {
var originalPrototypeAdd = ctor.prototype.add;
var getAddCount = 0;
Object.defineProperty(ctor.prototype, 'add', {
get: function() {
getAddCount++;
return function() {};
}
});
var s = new ctor(oneAndTwo.values());
assertEquals(1, getAddCount);
assertSize(0, s);
Object.defineProperty(ctor.prototype, 'add', {
value: originalPrototypeAdd,
writable: true
});
}
TestSetConstructorGetAddOnce(Set);
TestSetConstructorGetAddOnce(WeakSet);
function TestSetConstructorAddReplaced(ctor) {
var originalPrototypeAdd = ctor.prototype.add;
var addCount = 0;
ctor.prototype.add = function(value) {
addCount++;
originalPrototypeAdd.call(this, value);
ctor.prototype.add = null;
};
var s = new ctor(oneAndTwo.keys());
assertEquals(2, addCount);
assertSize(2, s);
ctor.prototype.add = originalPrototypeAdd;
}
TestSetConstructorAddReplaced(Set);
TestSetConstructorAddReplaced(WeakSet);
function TestSetConstructorOrderOfDoneValue(ctor) {
var valueCount = 0, doneCount = 0;
var iterator = {
next: function() {
return {
get value() {
valueCount++;
},
get done() {
doneCount++;
throw new Error();
}
};
}
};
iterator[Symbol.iterator] = function() {
return this;
};
assertThrows(function() {
new ctor(iterator);
});
assertEquals(1, doneCount);
assertEquals(0, valueCount);
}
TestSetConstructorOrderOfDoneValue(Set);
TestSetConstructorOrderOfDoneValue(WeakSet);
function TestSetConstructorNextNotAnObject(ctor) {
var iterator = {
next: function() {
return 'abc';
}
};
iterator[Symbol.iterator] = function() {
return this;
};
assertThrows(function() {
new ctor(iterator);
}, TypeError);
}
TestSetConstructorNextNotAnObject(Set);
TestSetConstructorNextNotAnObject(WeakSet);
(function TestWeakSetConstructorNonObjectKeys() {
assertThrows(function() {
new WeakSet([1]);
}, TypeError);
})();
function TestSetConstructorIterableValue(ctor) {
'use strict';
// Strict mode is required to prevent implicit wrapping in the getter.
Object.defineProperty(Number.prototype, Symbol.iterator, {
get: function() {
assertEquals('number', typeof this);
return function() {
assertEquals('number', typeof this);
return oneAndTwo.keys();
};
},
configurable: true
});
var set = new ctor(42);
assertSize(2, set);
assertTrue(set.has(k1));
assertTrue(set.has(k2));
delete Number.prototype[Symbol.iterator];
}
TestSetConstructorIterableValue(Set);
TestSetConstructorIterableValue(WeakSet);
(function TestSetConstructorStringValue() {
var s = new Set('abc');
assertSize(3, s);
assertTrue(s.has('a'));
assertTrue(s.has('b'));
assertTrue(s.has('c'));
})();
function TestMapConstructor(ctor) {
var m = new ctor(null);
assertSize(0, m);
m = new ctor(undefined);
assertSize(0, m);
// No @@iterator
assertThrows(function() {
new ctor({});
}, TypeError);
assertThrows(function() {
new ctor(true);
}, TypeError);
// @@iterator not callable
assertThrows(function() {
var object = {};
object[Symbol.iterator] = 42;
new ctor(object);
}, TypeError);
// @@iterator result not object
assertThrows(function() {
var object = {};
object[Symbol.iterator] = function() {
return 42;
};
new ctor(object);
}, TypeError);
var m2 = new Map();
m2.set(k0, 'a');
m2.set(k1, 'b');
m2.set(k2, 'c');
m = new ctor(m2.entries());
assertSize(3, m);
assertEquals('a', m.get(k0));
assertEquals('b', m.get(k1));
assertEquals('c', m.get(k2));
}
TestMapConstructor(Map);
TestMapConstructor(WeakMap);
function TestMapConstructorSetNotCallable(ctor) {
var originalPrototypeSet = ctor.prototype.set;
assertThrows(function() {
ctor.prototype.set = 42;
new ctor(oneAndTwo.entries());
}, TypeError);
ctor.prototype.set = originalPrototypeSet;
}
TestMapConstructorSetNotCallable(Map);
TestMapConstructorSetNotCallable(WeakMap);
function TestMapConstructorGetAddOnce(ctor) {
var originalPrototypeSet = ctor.prototype.set;
var getSetCount = 0;
Object.defineProperty(ctor.prototype, 'set', {
get: function() {
getSetCount++;
return function() {};
}
});
var m = new ctor(oneAndTwo.entries());
assertEquals(1, getSetCount);
assertSize(0, m);
Object.defineProperty(ctor.prototype, 'set', {
value: originalPrototypeSet,
writable: true
});
}
TestMapConstructorGetAddOnce(Map);
TestMapConstructorGetAddOnce(WeakMap);
function TestMapConstructorSetReplaced(ctor) {
var originalPrototypeSet = ctor.prototype.set;
var setCount = 0;
ctor.prototype.set = function(key, value) {
setCount++;
originalPrototypeSet.call(this, key, value);
ctor.prototype.set = null;
};
var m = new ctor(oneAndTwo.entries());
assertEquals(2, setCount);
assertSize(2, m);
ctor.prototype.set = originalPrototypeSet;
}
TestMapConstructorSetReplaced(Map);
TestMapConstructorSetReplaced(WeakMap);
function TestMapConstructorOrderOfDoneValue(ctor) {
var valueCount = 0, doneCount = 0;
function FakeError() {}
var iterator = {
next: function() {
return {
get value() {
valueCount++;
},
get done() {
doneCount++;
throw new FakeError();
}
};
}
};
iterator[Symbol.iterator] = function() {
return this;
};
assertThrows(function() {
new ctor(iterator);
}, FakeError);
assertEquals(1, doneCount);
assertEquals(0, valueCount);
}
TestMapConstructorOrderOfDoneValue(Map);
TestMapConstructorOrderOfDoneValue(WeakMap);
function TestMapConstructorNextNotAnObject(ctor) {
var iterator = {
next: function() {
return 'abc';
}
};
iterator[Symbol.iterator] = function() {
return this;
};
assertThrows(function() {
new ctor(iterator);
}, TypeError);
}
TestMapConstructorNextNotAnObject(Map);
TestMapConstructorNextNotAnObject(WeakMap);
function TestMapConstructorIteratorNotObjectValues(ctor) {
assertThrows(function() {
new ctor(oneAndTwo.values());
}, TypeError);
}
TestMapConstructorIteratorNotObjectValues(Map);
TestMapConstructorIteratorNotObjectValues(WeakMap);
(function TestWeakMapConstructorNonObjectKeys() {
assertThrows(function() {
new WeakMap([[1, 2]])
}, TypeError);
})();
function TestMapConstructorIterableValue(ctor) {
'use strict';
// Strict mode is required to prevent implicit wrapping in the getter.
Object.defineProperty(Number.prototype, Symbol.iterator, {
get: function() {
assertEquals('number', typeof this);
return function() {
assertEquals('number', typeof this);
return oneAndTwo.entries();
};
},
configurable: true
});
var map = new ctor(42);
assertSize(2, map);
assertEquals(1, map.get(k1));
assertEquals(2, map.get(k2));
delete Number.prototype[Symbol.iterator];
}
TestMapConstructorIterableValue(Map);
TestMapConstructorIterableValue(WeakMap);
function TestCollectionToString(C) {
assertEquals("[object " + C.name + "]",
Object.prototype.toString.call(new C()));
}
TestCollectionToString(Map);
TestCollectionToString(Set);
TestCollectionToString(WeakMap);
TestCollectionToString(WeakSet);
function TestConstructorOrderOfAdderIterator(ctor, adderName) {
var iterable = new Map();
iterable.set({}, {});
iterable.set({}, {});
var iterableFunction = iterable[Symbol.iterator];
Object.defineProperty(iterable, Symbol.iterator, {
get: function() {
log += 'iterator';
return iterableFunction;
}
});
var log = '';
var adderFunction = ctor.prototype[adderName];
Object.defineProperty(ctor.prototype, adderName, {
get: function() {
log += adderName;
return adderFunction;
}
});
new ctor(iterable);
assertEquals(adderName + 'iterator', log);
Object.defineProperty(ctor.prototype, adderName, {
value: adderFunction
});
}
TestConstructorOrderOfAdderIterator(Map, 'set');
TestConstructorOrderOfAdderIterator(Set, 'add');
TestConstructorOrderOfAdderIterator(WeakMap, 'set');
TestConstructorOrderOfAdderIterator(WeakSet, 'add');