'use strict'; const common = require('../common'); const assert = require('assert'); const spawn = require('child_process').spawn; const env = { 'HELLO': 'WORLD' }; Object.setPrototypeOf(env, { 'FOO': 'BAR' }); let child; if (common.isWindows) { child = spawn('cmd.exe', ['/c', 'set'], {env: env}); } else { child = spawn('/usr/bin/env', [], {env: env}); } let response = ''; child.stdout.setEncoding('utf8'); child.stdout.on('data', function(chunk) { console.log('stdout: ' + chunk); response += chunk; }); process.on('exit', function() { assert.ok(response.indexOf('HELLO=WORLD') >= 0); assert.ok(response.indexOf('FOO=BAR') >= 0); });