You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

53 lines
1.6 KiB

// FaketimeFlags: --exclude-monotonic -f '2014-07-21 09:00:00'
var common = require('../common');
var Timer = process.binding('timer_wrap').Timer;
var assert = require('assert');
var timerFired = false;
var intervalFired = false;
/*
* This test case aims at making sure that timing utilities such
* as setTimeout and setInterval are not vulnerable to time
* drifting or inconsistent time changes (such as ntp time sync
* in the past, etc.).
*
* It is run using faketime so that we change how
* non-monotonic clocks perceive time movement. We freeze
* non-monotonic time, and check if setTimeout and setInterval
* work properly in that situation.
*
* We check this by setting a timer based on a monotonic clock
* to fire after setTimeout's callback is supposed to be called.
* This monotonic timer, by definition, is not subject to time drifting
* and inconsistent time changes, so it can be considered as a solid
* reference.
*
* When the monotonic timer fires, if the setTimeout's callback
* hasn't been called yet, it means that setTimeout's underlying timer
* is vulnerable to time drift or inconsistent time changes.
*/
var monoTimer = new Timer();
monoTimer.ontimeout = function () {
/*
* Make sure that setTimeout's and setInterval's callbacks have
* already fired, otherwise it means that they are vulnerable to
* time drifting or inconsistent time changes.
*/
assert(timerFired);
assert(intervalFired);
};
monoTimer.start(300, 0);
var timer = setTimeout(function () {
timerFired = true;
}, 200);
var interval = setInterval(function () {
intervalFired = true;
clearInterval(interval);
}, 200);