test/parallel/test-child-process-fork-ref.js


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38

'use strict';
require('../common');
const assert = require('assert');
const fork = require('child_process').fork;

if (process.argv[2] === 'child') {
  process.send('1');

  // check that child don't instantly die
  setTimeout(function() {
    process.send('2');
  }, 200);

  process.on('disconnect', function() {
    process.stdout.write('3');
  });

} else {
  const child = fork(__filename, ['child'], {silent: true});

  const ipc = [];
  let stdout = '';

  child.on('message', function(msg) {
    ipc.push(msg);

    if (msg === '2') child.disconnect();
  });

  child.stdout.on('data', function(chunk) {
    stdout += chunk;
  });

  child.once('exit', function() {
    assert.deepStrictEqual(ipc, ['1', '2']);
    assert.strictEqual(stdout, '3');
  });
}