public void happened_before()
{
var time = DateTime.Today.AddHours(8).ToUniversalTime();
var milestone = new Milestone(time);
milestone.HappenedBefore(time.AddMinutes(-1)).ShouldBeFalse();
milestone.HappenedBefore(time.AddDays(-1)).ShouldBeFalse();
milestone.HappenedBefore(time.AddDays(1)).ShouldBeTrue();
}