text: // Copyright Joyent, Inc. and other Node contributors.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a
  // 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,
  // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  // USE OR OTHER DEALINGS IN THE SOFTWARE.
  
  'use strict';
  const { isWindows } = require('../common');
  const assert = require('assert');
  const exec = require('child_process').exec;
  const debug = require('util').debuglog('test');
  
  let success_count = 0;
  let error_count = 0;
  let response = '';
  let child;
  
  function after(err, stdout, stderr) {
    if (err) {
      error_count++;
      debug(`error!: ${err.code}`);
      debug(`stdout: ${JSON.stringify(stdout)}`);
      debug(`stderr: ${JSON.stringify(stderr)}`);
      assert.strictEqual(err.killed, false);
    } else {
      success_count++;
      assert.notStrictEqual(stdout, '');
    }
  }
  
  if (!isWindows) {
    child = exec('/usr/bin/env', { env: { 'HELLO': 'WORLD' } }, after);
  } else {
    child = exec('set',
                 { env: { ...process.env, 'HELLO': 'WORLD' } },
                 after);
  }
  
  child.stdout.setEncoding('utf8');
  child.stdout.on('data', function(chunk) {
    response += chunk;
  });
  
  process.on('exit', function() {
    debug('response: ', response);
    assert.strictEqual(success_count, 1);
    assert.strictEqual(error_count, 0);
    assert.ok(response.includes('HELLO=WORLD'));
  });
  