function format_date(date){
    var y = date.getFullYear(),
        m = date.getMonth() + 1,
        d = date.getDate(),
        h = date.getHours(),
        i = date.getMinutes(),
        s = date.getSeconds(),
        l = date.getMilliseconds();
    function z(i){return (i <= 9 ? '0'+i : i);}
    return y+'-'+z(m)+'-'+z(d)+' '+z(h)+':'+z(i)+':'+z(s)+'.'+z(l);
}


function datesEqual(actual, expected, message){
    QUnit.push(QUnit.equiv(actual, expected), format_date(actual), format_date(expected), message);
}