| // Copyright 2013 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: --harmony-symbols --harmony-collections |
| // Flags: --expose-gc --allow-natives-syntax |
| |
| var symbols = [] |
| |
| // Test different forms of constructor calls, all equivalent. |
| function TestNew() { |
| function IndirectSymbol() { return new Symbol } |
| function indirect() { return new IndirectSymbol() } |
| for (var i = 0; i < 10; ++i) { |
| symbols.push(new Symbol) |
| symbols.push(new Symbol()) |
| symbols.push(Symbol()) |
| symbols.push(indirect()) |
| } |
| %OptimizeFunctionOnNextCall(indirect) |
| indirect() // Call once before GC throws away type feedback. |
| gc() // Promote existing symbols and then allocate some more. |
| for (var i = 0; i < 10; ++i) { |
| symbols.push(new Symbol) |
| symbols.push(new Symbol()) |
| symbols.push(Symbol()) |
| symbols.push(indirect()) |
| } |
| } |
| TestNew() |
| |
| |
| function TestType() { |
| for (var i in symbols) { |
| assertTrue(%_IsSymbol(symbols[i])) |
| assertEquals("object", typeof symbols[i]) |
| assertTrue(typeof symbols[i] === "object") |
| assertEquals("[object Symbol]", Object.prototype.toString.call(symbols[i])) |
| } |
| } |
| TestType() |
| |
| |
| function TestEquality() { |
| // Every symbol should equal itself. |
| for (var i in symbols) { |
| assertSame(symbols[i], symbols[i]) |
| assertEquals(symbols[i], symbols[i]) |
| assertTrue(Object.is(symbols[i], symbols[i])) |
| assertTrue(symbols[i] === symbols[i]) |
| assertTrue(symbols[i] == symbols[i]) |
| } |
| |
| // All symbols should be distinct. |
| for (var i = 0; i < symbols.length; ++i) { |
| for (var j = i + 1; j < symbols.length; ++j) { |
| assertFalse(Object.is(symbols[i], symbols[j])) |
| assertFalse(symbols[i] === symbols[j]) |
| assertFalse(symbols[i] == symbols[j]) |
| } |
| } |
| } |
| TestEquality() |
| |
| |
| function TestGet() { |
| for (var i in symbols) { |
| assertEquals("[object Symbol]", symbols[i].toString()) |
| assertEquals(undefined, symbols[i].valueOf) |
| assertEquals(undefined, symbols[i].a) |
| assertEquals(undefined, symbols[i]["a" + "b"]) |
| assertEquals(undefined, symbols[i]["" + "1"]) |
| assertEquals(undefined, symbols[i][62]) |
| } |
| } |
| TestGet() |
| |
| |
| function TestSet() { |
| for (var i in symbols) { |
| symbols[i].toString = 0 |
| assertEquals("[object Symbol]", symbols[i].toString()) |
| symbols[i].a = 0 |
| assertEquals(undefined, symbols[i].a) |
| symbols[i]["a" + "b"] = 0 |
| assertEquals(undefined, symbols[i]["a" + "b"]) |
| symbols[i][62] = 0 |
| assertEquals(undefined, symbols[i][62]) |
| } |
| } |
| TestSet() |
| |
| |
| function TestCollections() { |
| var set = new Set |
| var map = new Map |
| var weakmap = new WeakMap |
| for (var i in symbols) { |
| set.add(symbols[i]) |
| map.set(symbols[i], i) |
| weakmap.set(symbols[i], i) |
| } |
| assertEquals(symbols.length, set.size) |
| assertEquals(symbols.length, map.size) |
| for (var i in symbols) { |
| assertTrue(set.has(symbols[i])) |
| assertTrue(map.has(symbols[i])) |
| assertTrue(weakmap.has(symbols[i])) |
| assertEquals(i, map.get(symbols[i])) |
| assertEquals(i, weakmap.get(symbols[i])) |
| } |
| for (var i in symbols) { |
| assertTrue(set.delete(symbols[i])) |
| assertTrue(map.delete(symbols[i])) |
| assertTrue(weakmap.delete(symbols[i])) |
| } |
| assertEquals(0, set.size) |
| assertEquals(0, map.size) |
| } |
| TestCollections() |
| |
| |
| |
| function TestKeySet(obj) { |
| // Set the even symbols via assignment. |
| for (var i = 0; i < symbols.length; i += 2) { |
| obj[symbols[i]] = i |
| } |
| } |
| |
| |
| function TestKeyDefine(obj) { |
| // Set the odd symbols via defineProperty (as non-enumerable). |
| for (var i = 1; i < symbols.length; i += 2) { |
| Object.defineProperty(obj, symbols[i], {value: i, configurable: true}) |
| } |
| } |
| |
| |
| function TestKeyGet(obj) { |
| var obj2 = Object.create(obj) |
| for (var i in symbols) { |
| assertEquals(i|0, obj[symbols[i]]) |
| assertEquals(i|0, obj2[symbols[i]]) |
| } |
| } |
| |
| |
| function TestKeyHas() { |
| for (var i in symbols) { |
| assertTrue(symbols[i] in obj) |
| assertTrue(Object.hasOwnProperty.call(obj, symbols[i])) |
| } |
| } |
| |
| |
| function TestKeyEnum(obj) { |
| for (var name in obj) { |
| assertFalse(%_IsSymbol(name)) |
| } |
| } |
| |
| |
| function TestKeyKeys(obj) { |
| assertEquals(0, Object.keys(obj).length) |
| assertTrue(symbols.length <= Object.getOwnPropertyNames(obj).length) |
| } |
| |
| |
| function TestKeyDescriptor(obj) { |
| for (var i in symbols) { |
| var desc = Object.getOwnPropertyDescriptor(obj, symbols[i]); |
| assertEquals(i|0, desc.value) |
| assertTrue(desc.configurable) |
| assertEquals(i % 2 == 0, desc.writable) |
| assertEquals(i % 2 == 0, desc.enumerable) |
| assertEquals(i % 2 == 0, |
| Object.prototype.propertyIsEnumerable.call(obj, symbols[i])) |
| } |
| } |
| |
| |
| function TestKeyDelete(obj) { |
| for (var i in symbols) { |
| delete obj[symbols[i]] |
| } |
| for (var i in symbols) { |
| assertEquals(undefined, Object.getOwnPropertyDescriptor(obj, symbols[i])) |
| } |
| } |
| |
| |
| var objs = [{}, [], Object.create(null), Object(1), new Map, function(){}] |
| |
| for (var i in objs) { |
| var obj = objs[i] |
| TestKeySet(obj) |
| TestKeyDefine(obj) |
| TestKeyGet(obj) |
| TestKeyHas(obj) |
| TestKeyEnum(obj) |
| TestKeyKeys(obj) |
| TestKeyDescriptor(obj) |
| TestKeyDelete(obj) |
| } |