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'use strict';
require('../common');
const assert = require('assert');
const childProcess = require('child_process');
// Child pipe test
if (process.argv[2] === 'pipe') {
process.stdout.write('stdout message');
process.stderr.write('stderr message');
} else if (process.argv[2] === 'ipc') {
// Child IPC test
process.send('message from child');
process.on('message', function() {
process.send('got message from master');
});
} else if (process.argv[2] === 'parent') {
// Parent | start child pipe test
const child = childProcess.fork(process.argv[1], ['pipe'], {silent: true});
// Allow child process to self terminate
child.channel.close();
child.channel = null;
child.on('exit', function() {
process.exit(0);
});
} else {
// testcase | start parent && child IPC test
// testing: is stderr and stdout piped to parent
const args = [process.argv[1], 'parent'];
const parent = childProcess.spawn(process.execPath, args);
//got any stderr or std data
let stdoutData = false;
parent.stdout.on('data', function() {
stdoutData = true;
});
let stderrData = false;
parent.stdout.on('data', function() {
stderrData = true;
});
// testing: do message system work when using silent
const child = childProcess.fork(process.argv[1], ['ipc'], {silent: true});
// Manual pipe so we will get errors
child.stderr.pipe(process.stderr, {end: false});
child.stdout.pipe(process.stdout, {end: false});
let childSending = false;
let childReciveing = false;
child.on('message', function(message) {
if (childSending === false) {
childSending = (message === 'message from child');
}
if (childReciveing === false) {
childReciveing = (message === 'got message from master');
}
if (childReciveing === true) {
child.kill();
}
});
child.send('message to child');
// Check all values
process.on('exit', function() {
// clean up
child.kill();
parent.kill();
// Check std(out|err) pipes
assert.ok(!stdoutData, 'The stdout socket was piped to parent');
assert.ok(!stderrData, 'The stderr socket was piped to parent');
// Check message system
assert.ok(childSending, 'The child was able to send a message');
assert.ok(childReciveing, 'The child was able to receive a message');
});
}
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