Roland Takacs
151 lines
3.0 KiB
JavaScript
151 lines
3.0 KiB
JavaScript
// Copyright JS Foundation and other contributors, http://js.foundation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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var object = {};
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var symbol = Symbol("symbol");
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Object.defineProperties(object, {
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"foo": {
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value: true,
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writable: true
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},
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[symbol]: {
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value: "a symbol",
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configurable: true
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}
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});
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assert (object.foo === true);
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assert (object[symbol] === "a symbol");
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try {
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Object.defineProperties(undefined, {
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[symbol]: {
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value: "a symbol",
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writable: true
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}
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});
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assert (false);
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} catch (e) {
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assert (e instanceof TypeError);
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}
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// If one of the properties is wrong than it shouldn't update the object.
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var obj2 = {
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a: 5
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};
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try {
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Object.defineProperties(obj2, {
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"foo": {
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value: true,
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writable: true
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},
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[symbol]: {
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value: "a symbol",
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set: 3
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}
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});
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assert (false);
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} catch (e) {
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assert (e instanceof TypeError);
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assert (obj2.foo === undefined);
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assert (obj2[symbol] === undefined);
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assert (obj2.a === 5);
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}
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// Define accessors
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var object = {};
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Object.defineProperties(object, {
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"foo": {
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value: 42,
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writable: true,
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},
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[symbol]: {
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get: function() { return this.foo },
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set: function(v) { this.foo = v }
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}
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});
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assert (object[symbol] === 42);
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object[symbol] = "baz";
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assert (object[symbol] === "baz");
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// Define get method which throws error
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var object = {};
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var props = {
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[symbol]: {
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value: 3,
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writable: true
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},
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get bar() {
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throw new TypeError("foo");
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return { value : 2, writable : true };
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},
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};
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try {
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Object.defineProperties(object, props);
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assert (false);
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} catch (e) {
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assert (e instanceof TypeError);
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assert (e.message === "foo");
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}
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// Define get method which deletes a property
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var object = {};
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Object.defineProperties(object, {
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"foo": {
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value: 42,
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writable: true,
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},
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[symbol]: {
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value: "a symbol",
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configurable: true
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},
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"bar": {
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get: function() {
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delete this[symbol];
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return this.foo;
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},
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}
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});
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assert (object[symbol] === "a symbol");
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assert (object.bar === 42);
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assert (object[symbol] === undefined);
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// This code should throw TypeError
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var object = {};
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var props = {
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[symbol]: {
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value: "a symbol",
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configurable: true
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},
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get bar() {
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delete props[symbol];
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delete props.prop1;
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return { value : 2, writable : true };
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},
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prop1: {
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value: 3,
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writable: true,
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},
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};
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try {
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Object.defineProperties(object, props);
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assert (false);
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} catch (e) {
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assert (e instanceof TypeError);
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}
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