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include("mjsunit.js");
function onLoad () {
assertInstanceof(setTimeout, Function);
var starttime = new Date;
setTimeout(function () {
var endtime = new Date;
var diff = endtime - starttime;
if (diff < 0) diff = -diff;
assertTrue(900 < diff || diff < 1100);
}, 1000);
// this timer shouldn't execute
var id = setTimeout(function () { assertTrue(false); }, 500);
clearTimeout(id);
var count = 0;
setInterval(function () {
count += 1;
var endtime = new Date;
var diff = endtime - starttime;
if (diff < 0) diff = -diff;
puts(diff);
var t = count * 1000;
assertTrue(t - 100 < diff || diff < t + 100);
assertTrue(count <= 3);
if (count == 3)
clearInterval(this);
}, 1000);
}