public MainWindowViewModel()
{
_keeper = new TimeKeeper(new Clock());
_timer = new Timer(x =>
{
_keeper.Notify();
TotalCost = _keeper.TotalCost;
}, null, -1, _interval * 1000);
}
public void SetUp()
{
_clock = new FakeClock();
_keeper = new TimeKeeper(_clock);
Assert.That(_keeper.IsRunning, Is.False);
}