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denoland-deno/tests/node_compat/test/parallel/test-stdio-pipe-access.js

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// deno-fmt-ignore-file
// deno-lint-ignore-file
// Copyright Joyent and Node contributors. All rights reserved. MIT license.
// Taken from Node 20.11.1
// This file is automatically generated by `tests/node_compat/runner/setup.ts`. Do not modify this file manually.
'use strict';
const common = require('../common');
if (!common.isMainThread)
common.skip("Workers don't have process-like stdio");
// Test if Node handles accessing 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; // eslint-disable-line no-unused-expressions
break;
}