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https://github.com/tc39/test262.git
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412 lines
11 KiB
JavaScript
412 lines
11 KiB
JavaScript
// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax
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function TestMeta() {
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assertEquals(1, Object.entries.length);
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assertEquals(Function.prototype, Object.getPrototypeOf(Object.entries));
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assertEquals("entries", Object.entries.name);
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var descriptor = Object.getOwnPropertyDescriptor(Object, "entries");
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assertTrue(descriptor.writable);
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assertFalse(descriptor.enumerable);
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assertTrue(descriptor.configurable);
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assertThrows(() => new Object.entries({}), TypeError);
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}
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TestMeta();
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function TestBasic(withWarmup) {
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var x = 16;
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var O = {
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d: 1,
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c: 3,
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[Symbol.iterator]: void 0,
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0: 123,
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1000: 456,
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[x * x]: "ducks",
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[`0x${(x * x).toString(16)}`]: "quack"
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};
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O.a = 2;
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O.b = 4;
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Object.defineProperty(O, "HIDDEN", { enumerable: false, value: NaN });
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if (withWarmup) {
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for (const key in O) {}
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}
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O.c = 6;
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const resultEntries = [
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["0", 123],
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["256", "ducks"],
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["1000", 456],
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["d", 1],
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["c", 6],
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["0x100", "quack"],
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["a", 2],
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["b", 4]
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];
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assertEquals(resultEntries, Object.entries(O));
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assertEquals(resultEntries, Object.entries(O));
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assertEquals(Object.entries(O), Object.keys(O).map(key => [key, O[key]]));
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assertTrue(Array.isArray(Object.entries({})));
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assertEquals(0, Object.entries({}).length);
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}
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TestBasic();
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TestBasic(true);
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function TestToObject() {
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assertThrows(function() { Object.entries(); }, TypeError);
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assertThrows(function() { Object.entries(null); }, TypeError);
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assertThrows(function() { Object.entries(void 0); }, TypeError);
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}
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TestToObject();
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function TestOrder(withWarmup) {
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var O = {
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a: 1,
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[Symbol.iterator]: null
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};
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O[456] = 123;
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Object.defineProperty(O, "HIDDEN", { enumerable: false, value: NaN });
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var priv = %CreatePrivateSymbol("Secret");
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O[priv] = 56;
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var log = [];
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var P = new Proxy(O, {
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ownKeys(target) {
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log.push("[[OwnPropertyKeys]]");
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return Reflect.ownKeys(target);
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},
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get(target, name) {
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log.push(`[[Get]](${JSON.stringify(name)})`);
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return Reflect.get(target, name);
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},
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getOwnPropertyDescriptor(target, name) {
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log.push(`[[GetOwnProperty]](${JSON.stringify(name)})`);
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return Reflect.getOwnPropertyDescriptor(target, name);
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},
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set(target, name, value) {
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assertUnreachable();
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}
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});
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if (withWarmup) {
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for (const key in P) {}
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}
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log = [];
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assertEquals([["456", 123], ["a", 1]], Object.entries(P));
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assertEquals([
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"[[OwnPropertyKeys]]",
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"[[GetOwnProperty]](\"456\")",
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"[[Get]](\"456\")",
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"[[GetOwnProperty]](\"a\")",
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"[[Get]](\"a\")",
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"[[GetOwnProperty]](\"HIDDEN\")"
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], log);
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}
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TestOrder();
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TestOrder(true);
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function TestOrderWithDuplicates(withWarmup) {
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var O = {
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a: 1,
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[Symbol.iterator]: null
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};
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O[456] = 123;
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Object.defineProperty(O, "HIDDEN", { enumerable: false, value: NaN });
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var priv = %CreatePrivateSymbol("Secret");
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O[priv] = 56;
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var log = [];
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var P = new Proxy(O, {
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ownKeys(target) {
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log.push("[[OwnPropertyKeys]]");
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return ["a", Symbol.iterator, "a", "456", "HIDDEN", "HIDDEN", "456"];
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},
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get(target, name) {
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log.push(`[[Get]](${JSON.stringify(name)})`);
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return Reflect.get(target, name);
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},
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getOwnPropertyDescriptor(target, name) {
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log.push(`[[GetOwnProperty]](${JSON.stringify(name)})`);
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return Reflect.getOwnPropertyDescriptor(target, name);
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},
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set(target, name, value) {
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assertUnreachable();
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}
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});
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if (withWarmup) {
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for (const key in O) {};
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try { for (const key in P) {} } catch {};
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}
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assertThrows(() => Object.entries(P), TypeError);
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}
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TestOrderWithDuplicates();
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TestOrderWithDuplicates(true);
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function TestDescriptorProperty() {
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function f() {};
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const o = {};
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o.a = f;
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for (const key in o) {};
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const entries = Object.entries(o);
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assertEquals([['a', f]], entries);
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}
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TestDescriptorProperty();
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function TestPropertyFilter(withWarmup) {
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var object = { prop3: 30 };
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object[2] = 40;
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object["prop4"] = 50;
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Object.defineProperty(object, "prop5", { value: 60, enumerable: true });
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Object.defineProperty(object, "prop6", { value: 70, enumerable: false });
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Object.defineProperty(object, "prop7", {
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enumerable: true, get() { return 80; }});
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var sym = Symbol("prop8");
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object[sym] = 90;
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if (withWarmup) {
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for (const key in object) {}
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}
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values = Object.entries(object);
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assertEquals(5, values.length);
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assertEquals([
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[ "2", 40 ],
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[ "prop3", 30 ],
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[ "prop4", 50 ],
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[ "prop5", 60 ],
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[ "prop7", 80 ]
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], values);
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}
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TestPropertyFilter();
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TestPropertyFilter(true);
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function TestPropertyFilter2(withWarmup) {
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var object = { };
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Object.defineProperty(object, "prop1", { value: 10 });
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Object.defineProperty(object, "prop2", { value: 20 });
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object.prop3 = 30;
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if (withWarmup) {
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for (const key in object) {}
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}
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values = Object.entries(object);
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assertEquals(1, values.length);
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assertEquals([
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[ "prop3", 30 ],
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], values);
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}
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TestPropertyFilter2();
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TestPropertyFilter2(true);
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function TestWithProxy(withWarmup) {
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var obj1 = {prop1:10};
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var proxy1 = new Proxy(obj1, { });
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if (withWarmup) {
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for (const key in proxy1) {}
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}
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assertEquals([ [ "prop1", 10 ] ], Object.entries(proxy1));
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var obj2 = {};
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Object.defineProperty(obj2, "prop2", { value: 20, enumerable: true });
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Object.defineProperty(obj2, "prop3", {
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get() { return 30; }, enumerable: true });
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var proxy2 = new Proxy(obj2, {
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getOwnPropertyDescriptor(target, name) {
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return Reflect.getOwnPropertyDescriptor(target, name);
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}
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});
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if (withWarmup) {
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for (const key in proxy2) {}
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}
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assertEquals([ [ "prop2", 20 ], [ "prop3", 30 ] ], Object.entries(proxy2));
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var obj3 = {};
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var count = 0;
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var proxy3 = new Proxy(obj3, {
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get(target, property, receiver) {
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return count++ * 5;
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},
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getOwnPropertyDescriptor(target, property) {
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return { configurable: true, enumerable: true };
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},
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ownKeys(target) {
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return [ "prop0", "prop1", Symbol("prop2"), Symbol("prop5") ];
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}
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});
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if (withWarmup) {
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for (const key in proxy3) {}
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}
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assertEquals([ [ "prop0", 0 ], [ "prop1", 5 ] ], Object.entries(proxy3));
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}
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TestWithProxy();
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TestWithProxy(true);
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function TestMutateDuringEnumeration(withWarmup) {
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var aDeletesB = {
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get a() {
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delete this.b;
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return 1;
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},
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b: 2
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};
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if (withWarmup) {
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for (const key in aDeletesB) {}
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}
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assertEquals([ [ "a", 1 ] ], Object.entries(aDeletesB));
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var aRemovesB = {
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get a() {
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Object.defineProperty(this, "b", { enumerable: false });
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return 1;
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},
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b: 2
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};
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if (withWarmup) {
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for (const key in aRemovesB) {}
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}
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assertEquals([ [ "a", 1 ] ], Object.entries(aRemovesB));
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var aAddsB = { get a() { this.b = 2; return 1; } };
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if (withWarmup) {
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for (const key in aAddsB) {}
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}
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assertEquals([ [ "a", 1 ] ], Object.entries(aAddsB));
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var aMakesBEnumerable = {};
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Object.defineProperty(aMakesBEnumerable, "a", {
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get() {
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Object.defineProperty(this, "b", { enumerable: true });
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return 1;
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},
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enumerable: true
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});
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Object.defineProperty(aMakesBEnumerable, "b", {
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value: 2, configurable:true, enumerable: false });
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if (withWarmup) {
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for (const key in aMakesBEnumerable) {}
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}
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assertEquals([ [ "a", 1 ], [ "b", 2 ] ], Object.entries(aMakesBEnumerable));
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}
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TestMutateDuringEnumeration();
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TestMutateDuringEnumeration(true);
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function TestElementKinds(withWarmup) {
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var O1 = { name: "1" }, O2 = { name: "2" }, O3 = { name: "3" };
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var PI = 3.141592653589793;
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var E = 2.718281828459045;
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function fastSloppyArguments(a, b, c) {
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delete arguments[0];
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arguments[0] = a;
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return arguments;
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}
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function slowSloppyArguments(a, b, c) {
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delete arguments[0];
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arguments[0] = a;
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Object.defineProperties(arguments, {
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0: {
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enumerable: true,
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value: a
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},
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9999: {
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enumerable: false,
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value: "Y"
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}
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});
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arguments[10000] = "X";
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return arguments;
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}
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var element_kinds = {
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PACKED_SMI_ELEMENTS: [ [1, 2, 3], [ ["0", 1], ["1", 2], ["2", 3] ] ],
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HOLEY_SMI_ELEMENTS: [ [, , 3], [ ["2", 3] ] ],
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PACKED_ELEMENTS: [ [O1, O2, O3], [ ["0", O1], ["1", O2], ["2", O3] ] ],
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HOLEY_ELEMENTS: [ [, , O3], [ ["2", O3] ] ],
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PACKED_DOUBLE_ELEMENTS: [ [E, NaN, PI], [ ["0", E], ["1", NaN], ["2", PI] ] ],
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HOLEY_DOUBLE_ELEMENTS: [ [, , NaN], [ ["2", NaN] ] ],
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DICTIONARY_ELEMENTS: [ Object.defineProperties({ 10000: "world" }, {
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100: { enumerable: true, value: "hello", configurable: true},
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99: { enumerable: false, value: "nope", configurable: true}
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}), [ ["100", "hello"], ["10000", "world" ] ] ],
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FAST_SLOPPY_ARGUMENTS_ELEMENTS: [
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fastSloppyArguments("a", "b", "c"),
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[ ["0", "a"], ["1", "b"], ["2", "c"] ] ],
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SLOW_SLOPPY_ARGUMENTS_ELEMENTS: [
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slowSloppyArguments("a", "b", "c"),
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[ ["0", "a"], ["1", "b"], ["2", "c"], ["10000", "X"] ] ],
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FAST_STRING_WRAPPER_ELEMENTS: [ new String("str"),
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[ ["0", "s"], ["1", "t"], ["2", "r"]] ],
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SLOW_STRING_WRAPPER_ELEMENTS: [
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Object.defineProperties(new String("str"), {
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10000: { enumerable: false, value: "X", configurable: true},
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9999: { enumerable: true, value: "Y", configurable: true}
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}), [["0", "s"], ["1", "t"], ["2", "r"], ["9999", "Y"]] ],
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};
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if (withWarmup) {
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for (const key in element_kinds) {}
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}
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for (let [kind, [object, expected]] of Object.entries(element_kinds)) {
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if (withWarmup) {
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for (const key in object) {}
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}
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let result1 = Object.entries(object);
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%HeapObjectVerify(object);
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%HeapObjectVerify(result1);
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assertEquals(expected, result1, `fast Object.entries() with ${kind}`);
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let proxy = new Proxy(object, {});
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if (withWarmup) {
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for (const key in proxy) {}
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}
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let result2 = Object.entries(proxy);
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%HeapObjectVerify(result2);
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assertEquals(result1, result2, `slow Object.entries() with ${kind}`);
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}
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function makeFastElements(array) {
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// Remove all possible getters.
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for (let k of Object.getOwnPropertyNames(this)) {
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if (k == "length") continue;
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delete this[k];
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}
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// Make the array large enough to trigger re-checking for compaction.
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this[1000] = 1;
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// Make the elements fast again.
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Array.prototype.unshift.call(this, 1.1);
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}
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// Test that changing the elements kind is supported.
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for (let [kind, [object, expected]] of Object.entries(element_kinds)) {
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if (kind == "FAST_STRING_WRAPPER_ELEMENTS") break;
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object.__defineGetter__(1, makeFastElements);
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if (withWarmup) {
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for (const key in object) {}
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}
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let result1 = Object.entries(object).toString();
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%HeapObjectVerify(object);
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%HeapObjectVerify(result1);
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}
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}
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TestElementKinds();
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TestElementKinds(true);
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