@mangar2/shutdown/test/test.js

Implements graceful shutdown

/**
 * ---------------------------------------------------------------------------------------------------
 * This software is licensed under the GNU LESSER GENERAL PUBLIC LICENSE Version 3. It is furnished
 * "as is", without any support, and with no warranty, express or implied, as to its usefulness for
 * any purpose.
 *
 * Author:      Volker Böhm
 * Copyright:   Volker Böhm
 * ---------------------------------------------------------------------------------------------------
 */

const shutdown = require('@mangar2/shutdown')
const UnitTest = require('@mangar2/unittest')
const unitTest = new UnitTest(true)

shutdown(async () => {
    unitTest.log('SIGINT received')
    unitTest.success('shutdown')
    await delay(1000)
    unitTest.log('safe shutdown')
    process.exit(0)
})

function delay (milliseconds) {
    return new Promise(resolve => setTimeout(resolve, milliseconds))
}

(async () => {
    console.log('Press ^C to test')
    for (let i = 0; i < 10; i++) {
        await delay(1000)
        unitTest.log('.')
    }
    unitTest.showResult(0)
})()