node/test/parallel/test-stdio-pipe-stderr.js
Benjamin Coe d942573393 test: add regression test for #11257
Refs: https://github.com/nodejs/node/issues/11257

PR-URL: https://github.com/nodejs/node/pull/20391
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
2018-05-10 12:08:17 -04:00

38 lines
1.2 KiB
JavaScript

'use strict';
require('../common');
const tmpdir = require('../common/tmpdir');
const assert = require('assert');
const fs = require('fs');
const join = require('path').join;
const spawn = require('child_process').spawnSync;
// Test that invoking node with require, and piping stderr to file,
// does not result in exception,
// see: https://github.com/nodejs/node/issues/11257
tmpdir.refresh();
const fakeModulePath = join(tmpdir.path, 'batman.js');
const stderrOutputPath = join(tmpdir.path, 'stderr-output.txt');
// we need to redirect stderr to a file to produce #11257
const stream = fs.createWriteStream(stderrOutputPath);
// the error described in #11257 only happens when we require a
// non-built-in module.
fs.writeFileSync(fakeModulePath, '', 'utf8');
stream.on('open', () => {
spawn(process.execPath, {
input: `require("${fakeModulePath.replace(/\\/g, '/')}")`,
stdio: ['pipe', 'pipe', stream]
});
const stderr = fs.readFileSync(stderrOutputPath, 'utf8').trim();
assert.strictEqual(
stderr,
'',
`piping stderr to file should not result in exception: ${stderr}`
);
stream.end();
fs.unlinkSync(stderrOutputPath);
fs.unlinkSync(fakeModulePath);
});