node/test/parallel/test-spawn-cmd-named-pipe.js

'use strict';
const common = require('../common');
// This test is intended for Windows only
if (!common.isWindows)
  common.skip('this test is Windows-specific.');

const assert = require('assert');

if (!process.argv[2]) {
  // parent
  const net = require('net');
  const spawn = require('child_process').spawn;
  const path = require('path');

  const pipeNamePrefix = `${path.basename(__filename)}.${process.pid}`;
  const stdinPipeName = `\\\\.\\pipe\\${pipeNamePrefix}.stdin`;
  const stdoutPipeName = `\\\\.\\pipe\\${pipeNamePrefix}.stdout`;

  const stdinPipeServer = net.createServer(function(c) {
    c.on('end', common.mustCall(function() {
    }));
    c.end('hello');
  });
  stdinPipeServer.listen(stdinPipeName);

  const output = [];

  const stdoutPipeServer = net.createServer(function(c) {
    c.on('data', function(x) {
      output.push(x);
    });
    c.on('end', common.mustCall(function() {
      assert.strictEqual(output.join(''), 'hello');
    }));
  });
  stdoutPipeServer.listen(stdoutPipeName);

  const args =
    [`"${__filename}"`, 'child', '<', stdinPipeName, '>', stdoutPipeName];

  const child = spawn(`"${process.execPath}"`, args, { shell: true });

  child.on('exit', common.mustCall(function(exitCode) {
    stdinPipeServer.close();
    stdoutPipeServer.close();
    assert.strictEqual(exitCode, 0);
  }));
} else {
  // child
  process.stdin.pipe(process.stdout);
}