node/test/async-hooks/test-querywrap.js

'use strict';
// Flags: --expose-gc

const common = require('../common');
const assert = require('assert');
const tick = require('./tick');
const initHooks = require('./init-hooks');
const { checkInvocations } = require('./hook-checks');
const dns = require('dns');

const hooks = initHooks();

hooks.enable();
// uses cares for queryA which in turn uses QUERYWRAP
dns.resolve('localhost', common.mustCall(onresolved));

function onresolved() {
  const as = hooks.activitiesOfTypes('QUERYWRAP');
  const a = as[0];
  assert.strictEqual(as.length, 1, 'one activity in onresolved callback');
  checkInvocations(a, { init: 1, before: 1 }, 'while in onresolved callback');
  tick(1E4);
}

process.on('exit', onexit);

function onexit() {
  hooks.disable();
  hooks.sanityCheck('QUERYWRAP');

  const as = hooks.activitiesOfTypes('QUERYWRAP');
  assert.strictEqual(as.length, 1, 'one activity on process exit');
  const a = as[0];

  assert.strictEqual(a.type, 'QUERYWRAP', 'query wrap');
  assert.strictEqual(typeof a.uid, 'number', 'uid is a number');
  assert.strictEqual(typeof a.triggerId, 'number', 'triggerId is a number');
  checkInvocations(a, { init: 1, before: 1, after: 1, destroy: 1 },
                   'when process exits');
}