xref: /third_party/node/test/parallel/test-vm-function-declaration.js

// Copyright Joyent, Inc. and other Node contributors.
//
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// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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'use strict';
require('../common');
const assert = require('assert');

const vm = require('vm');
const o = vm.createContext({ console });

// Function declaration and expression should both be copied to the
// sandboxed context.
let code = 'let a = function() {};\n';
code += 'function b(){}\n';
code += 'var c = function() {};\n';
code += 'var d = () => {};\n';
code += 'let e = () => {};\n';

// Grab the global b function as the completion value, to ensure that
// we are getting the global function, and not some other thing
code += '(function(){return this})().b;\n';

const res = vm.runInContext(code, o, 'test');
assert.strictEqual(typeof res, 'function');
assert.strictEqual(res.name, 'b');
assert.strictEqual(typeof o.a, 'undefined');
assert.strictEqual(typeof o.b, 'function');
assert.strictEqual(typeof o.c, 'function');
assert.strictEqual(typeof o.d, 'function');
assert.strictEqual(typeof o.e, 'undefined');
assert.strictEqual(res, o.b);