node/test/parallel/test-stdio-pipe-access.js
Anna Henningsen 229dca3dee
test,tools: enable running tests under workers
Enable running tests inside workers by passing `--worker`
to `tools/test.py`. A number of tests are marked as skipped,
or have been slightly altered to fit the different environment.

PR-URL: https://github.com/nodejs/node/pull/20876
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Shingo Inoue <leko.noor@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: John-David Dalton <john.david.dalton@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
2018-06-06 19:44:11 +02:00

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'use strict';
const common = require('../common');
if (!common.isMainThread)
common.skip('Workers dont have process-like stdio');
// Test if Node handles acessing process.stdin if it is a redirected
// pipe without deadlocking
const { spawn, spawnSync } = require('child_process');
const numTries = 5;
const who = process.argv.length <= 2 ? 'runner' : process.argv[2];
switch (who) {
case 'runner':
for (let num = 0; num < numTries; ++num) {
spawnSync(process.argv0,
[process.argv[1], 'parent'],
{ 'stdio': 'inherit' });
}
break;
case 'parent':
const middle = spawn(process.argv0,
[process.argv[1], 'middle'],
{ 'stdio': 'pipe' });
middle.stdout.on('data', () => {});
break;
case 'middle':
spawn(process.argv0,
[process.argv[1], 'bottom'],
{ 'stdio': [ process.stdin,
process.stdout,
process.stderr ] });
break;
case 'bottom':
process.stdin;
break;
}