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denoland-deno/tests/node_compat/test/parallel/test-vm-inherited_properties.js

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// deno-fmt-ignore-file
// deno-lint-ignore-file
// Copyright Joyent and Node contributors. All rights reserved. MIT license.
// Taken from Node 18.12.1
// This file is automatically generated by `tests/node_compat/runner/setup.ts`. Do not modify this file manually.
'use strict';
require('../common');
const vm = require('vm');
const assert = require('assert');
let base = {
propBase: 1
};
let sandbox = Object.create(base, {
propSandbox: { value: 3 }
});
const context = vm.createContext(sandbox);
let result = vm.runInContext('Object.hasOwnProperty(this, "propBase");',
context);
assert.strictEqual(result, false);
// Ref: https://github.com/nodejs/node/issues/5350
base = { __proto__: null };
base.x = 1;
base.y = 2;
sandbox = { __proto__: base };
sandbox.z = 3;
assert.deepStrictEqual(Object.keys(sandbox), ['z']);
const code = 'x = 0; z = 4;';
result = vm.runInNewContext(code, sandbox);
assert.strictEqual(result, 4);
// Check that y is not an own property.
assert.deepStrictEqual(Object.keys(sandbox), ['z', 'x']);