node/test/async-hooks/test-graph.intervals.js

'use strict';

const common = require('../common');
const initHooks = require('./init-hooks');
const verifyGraph = require('./verify-graph');
const TIMEOUT = 1;

const hooks = initHooks();
hooks.enable();

let count = 0;
const iv1 = setInterval(common.mustCall(onfirstInterval, 3), TIMEOUT);
let iv2;

function onfirstInterval() {
  if (++count === 3) {
    clearInterval(iv1);
    iv2 = setInterval(common.mustCall(onsecondInterval, 1), TIMEOUT + 1);
  }
}

function onsecondInterval() {
  clearInterval(iv2);
}

process.on('exit', onexit);

function onexit() {
  hooks.disable();
  verifyGraph(
    hooks,
    [ { type: 'Timeout', id: 'timeout:1', triggerAsyncId: null },
      { type: 'TIMERWRAP', id: 'timer:1', triggerAsyncId: null },
      { type: 'Timeout', id: 'timeout:2', triggerAsyncId: 'timeout:1' },
      { type: 'TIMERWRAP', id: 'timer:2', triggerAsyncId: 'timeout:1' } ]
  );
}