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| Current File : //proc/thread-self/root/home/ubuntu/node-v16.18.1/test/parallel/test-child-process-fork-stdio.js |
'use strict';
const common = require('../common');
const assert = require('assert');
const cp = require('child_process');
const net = require('net');
if (process.argv[2] === 'child') {
process.stdout.write('this should be ignored');
process.stderr.write('this should not be ignored');
const pipe = new net.Socket({ fd: 4 });
process.on('disconnect', () => {
pipe.unref();
});
pipe.setEncoding('utf8');
pipe.on('data', (data) => {
process.send(data);
});
} else {
assert.throws(
() => cp.fork(__filename, { stdio: ['pipe', 'pipe', 'pipe', 'pipe'] }),
{ code: 'ERR_CHILD_PROCESS_IPC_REQUIRED', name: 'Error' });
let ipc = '';
let stderr = '';
const buf = Buffer.from('data to send via pipe');
const child = cp.fork(__filename, ['child'], {
stdio: [0, 'ignore', 'pipe', 'ipc', 'pipe']
});
assert.strictEqual(child.stdout, null);
child.on('message', (msg) => {
ipc += msg;
if (ipc === buf.toString()) {
child.disconnect();
}
});
child.stderr.on('data', (chunk) => {
stderr += chunk;
});
child.on('exit', common.mustCall((code, signal) => {
assert.strictEqual(code, 0);
assert.strictEqual(signal, null);
assert.strictEqual(stderr, 'this should not be ignored');
}));
child.stdio[4].write(buf);
}
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