mirror of https://gitee.com/openkylin/nodejs.git
130 lines
3.2 KiB
JavaScript
130 lines
3.2 KiB
JavaScript
'use strict';
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require('../common');
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const assert = require('assert');
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const vm = require('vm');
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const dSymbol = Symbol('d');
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const sandbox = {
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a: 'a',
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dSymbol
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};
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Object.defineProperties(sandbox, {
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b: {
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value: 'b'
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},
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c: {
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value: 'c',
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writable: true,
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enumerable: true
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},
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[dSymbol]: {
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value: 'd'
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},
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e: {
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value: 'e',
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configurable: true
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},
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f: {}
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});
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const ctx = vm.createContext(sandbox);
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const result = vm.runInContext(`
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const getDesc = (prop) => Object.getOwnPropertyDescriptor(this, prop);
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const result = {
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a: getDesc('a'),
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b: getDesc('b'),
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c: getDesc('c'),
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d: getDesc(dSymbol),
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e: getDesc('e'),
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f: getDesc('f'),
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g: getDesc('g')
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};
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result;
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`, ctx);
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// eslint-disable-next-line no-restricted-properties
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assert.deepEqual(result, {
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a: { value: 'a', writable: true, enumerable: true, configurable: true },
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b: { value: 'b', writable: false, enumerable: false, configurable: false },
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c: { value: 'c', writable: true, enumerable: true, configurable: false },
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d: { value: 'd', writable: false, enumerable: false, configurable: false },
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e: { value: 'e', writable: false, enumerable: false, configurable: true },
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f: {
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value: undefined,
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writable: false,
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enumerable: false,
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configurable: false
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},
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g: undefined
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});
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// Define new properties
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vm.runInContext(`
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Object.defineProperty(this, 'h', {value: 'h'});
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Object.defineProperty(this, 'i', {});
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Object.defineProperty(this, 'j', {
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get() { return 'j'; }
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});
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let kValue = 0;
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Object.defineProperty(this, 'k', {
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get() { return kValue; },
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set(value) { kValue = value }
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});
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`, ctx);
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assert.deepStrictEqual(Object.getOwnPropertyDescriptor(ctx, 'h'), {
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value: 'h',
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writable: false,
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enumerable: false,
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configurable: false
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});
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assert.deepStrictEqual(Object.getOwnPropertyDescriptor(ctx, 'i'), {
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value: undefined,
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writable: false,
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enumerable: false,
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configurable: false
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});
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const jDesc = Object.getOwnPropertyDescriptor(ctx, 'j');
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assert.strictEqual(typeof jDesc.get, 'function');
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assert.strictEqual(typeof jDesc.set, 'undefined');
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assert.strictEqual(jDesc.enumerable, false);
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assert.strictEqual(jDesc.configurable, false);
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const kDesc = Object.getOwnPropertyDescriptor(ctx, 'k');
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assert.strictEqual(typeof kDesc.get, 'function');
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assert.strictEqual(typeof kDesc.set, 'function');
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assert.strictEqual(kDesc.enumerable, false);
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assert.strictEqual(kDesc.configurable, false);
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assert.strictEqual(ctx.k, 0);
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ctx.k = 1;
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assert.strictEqual(ctx.k, 1);
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assert.strictEqual(vm.runInContext('k;', ctx), 1);
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vm.runInContext('k = 2;', ctx);
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assert.strictEqual(ctx.k, 2);
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assert.strictEqual(vm.runInContext('k;', ctx), 2);
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// Redefine properties on the global object
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assert.strictEqual(typeof vm.runInContext('encodeURI;', ctx), 'function');
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assert.strictEqual(ctx.encodeURI, undefined);
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vm.runInContext(`
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Object.defineProperty(this, 'encodeURI', { value: 42 });
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`, ctx);
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assert.strictEqual(vm.runInContext('encodeURI;', ctx), 42);
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assert.strictEqual(ctx.encodeURI, 42);
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// Redefine properties on the sandbox
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vm.runInContext(`
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Object.defineProperty(this, 'e', { value: 'newE' });
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`, ctx);
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assert.strictEqual(ctx.e, 'newE');
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assert.throws(() => vm.runInContext(`
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'use strict';
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Object.defineProperty(this, 'f', { value: 'newF' });
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`, ctx), /TypeError: Cannot redefine property: f/);
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