249bf75e0c
Both of them shipped in Chrome 49 without incident. Also move relevant tests from harmony/ to es6/. Review URL: https://codereview.chromium.org/1815773002 Cr-Commit-Position: refs/heads/master@{#34964}
207 lines
4.7 KiB
JavaScript
207 lines
4.7 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: --harmony-object-own-property-descriptors
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// Flags: --allow-natives-syntax
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function DataDescriptor(value) {
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return { "enumerable": true, "configurable": true, "writable": true, value };
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}
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function TestMeta() {
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assertEquals(1, Object.getOwnPropertyDescriptors.length);
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assertEquals(Function.prototype,
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Object.getPrototypeOf(Object.getOwnPropertyDescriptors));
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assertEquals(
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'getOwnPropertyDescriptors', Object.getOwnPropertyDescriptors.name);
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var desc = Reflect.getOwnPropertyDescriptor(
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Object, 'getOwnPropertyDescriptors');
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assertFalse(desc.enumerable);
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assertTrue(desc.writable);
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assertTrue(desc.configurable);
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}
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TestMeta();
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function TestToObject() {
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assertThrows(function() {
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Object.getOwnPropertyDescriptors(null);
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}, TypeError);
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assertThrows(function() {
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Object.getOwnPropertyDescriptors(undefined);
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}, TypeError);
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assertThrows(function() {
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Object.getOwnPropertyDescriptors();
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}, TypeError);
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}
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TestToObject();
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function TestPrototypeProperties() {
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function F() {};
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F.prototype.a = "A";
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F.prototype.b = "B";
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var F2 = new F();
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Object.defineProperties(F2, {
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"b": {
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enumerable: false,
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configurable: true,
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writable: false,
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value: "Shadowed 'B'"
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},
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"c": {
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enumerable: false,
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configurable: true,
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writable: false,
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value: "C"
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}
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});
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assertEquals({
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"b": {
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enumerable: false,
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configurable: true,
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writable: false,
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value: "Shadowed 'B'"
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},
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"c": {
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enumerable: false,
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configurable: true,
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writable: false,
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value: "C"
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}
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}, Object.getOwnPropertyDescriptors(F2));
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}
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TestPrototypeProperties();
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function TestPrototypeProperties() {
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function F() {};
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F.prototype.a = "A";
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F.prototype.b = "B";
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var F2 = new F();
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Object.defineProperties(F2, {
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"b": {
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enumerable: false,
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configurable: true,
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writable: false,
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value: "Shadowed 'B'"
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},
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"c": {
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enumerable: false,
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configurable: true,
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writable: false,
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value: "C"
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}
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});
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assertEquals({
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"b": {
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enumerable: false,
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configurable: true,
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writable: false,
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value: "Shadowed 'B'"
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},
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"c": {
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enumerable: false,
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configurable: true,
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writable: false,
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value: "C"
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}
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}, Object.getOwnPropertyDescriptors(F2));
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}
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TestPrototypeProperties();
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function TestTypeFilteringAndOrder() {
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var log = [];
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var sym = Symbol("foo");
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var psym = %CreatePrivateSymbol("private");
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var O = {
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0: 0,
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[sym]: 3,
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"a": 2,
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[psym]: 4,
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1: 1,
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};
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var P = new Proxy(O, {
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ownKeys(target) {
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log.push("ownKeys()");
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return Reflect.ownKeys(target);
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},
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getOwnPropertyDescriptor(target, name) {
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log.push(`getOwnPropertyDescriptor(${String(name)})`);
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return Reflect.getOwnPropertyDescriptor(target, name);
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},
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get(target, name) { assertUnreachable(); },
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set(target, name, value) { assertUnreachable(); },
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deleteProperty(target, name) { assertUnreachable(); },
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defineProperty(target, name, desc) { assertUnreachable(); }
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});
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var result1 = Object.getOwnPropertyDescriptors(O);
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assertEquals({
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0: DataDescriptor(0),
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1: DataDescriptor(1),
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"a": DataDescriptor(2),
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[sym]: DataDescriptor(3)
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}, result1);
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var result2 = Object.getOwnPropertyDescriptors(P);
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assertEquals([
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"ownKeys()",
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"getOwnPropertyDescriptor(0)",
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"getOwnPropertyDescriptor(1)",
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"getOwnPropertyDescriptor(a)",
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"getOwnPropertyDescriptor(Symbol(foo))"
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], log);
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assertEquals({
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0: DataDescriptor(0),
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1: DataDescriptor(1),
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"a": DataDescriptor(2),
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[sym]: DataDescriptor(3)
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}, result2);
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}
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TestTypeFilteringAndOrder();
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function TestDuplicateKeys() {
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var i = 0;
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var log = [];
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var P = new Proxy({}, {
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ownKeys() {
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log.push(`ownKeys()`);
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return ["A", "A"];
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},
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getOwnPropertyDescriptor(t, name) {
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log.push(`getOwnPropertyDescriptor(${name})`);
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if (i++) return;
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return {
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configurable: true,
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writable: false,
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value: "VALUE"
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};
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},
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get(target, name) { assertUnreachable(); },
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set(target, name, value) { assertUnreachable(); },
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deleteProperty(target, name) { assertUnreachable(); },
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defineProperty(target, name, desc) { assertUnreachable(); }
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});
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var result = Object.getOwnPropertyDescriptors(P);
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assertEquals({ "A": undefined }, result);
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assertTrue(result.hasOwnProperty("A"));
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assertEquals([
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"ownKeys()",
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"getOwnPropertyDescriptor(A)",
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"getOwnPropertyDescriptor(A)"
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], log);
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}
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TestDuplicateKeys();
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