public void SecondFillUps()
{
var job = new Job();
FillUp f1 = job.AddFillUp(odometer: 1000, liters: 60);
FillUp f2 = job.AddFillUp(odometer: 1000, liters: 60);
Assert.Equal(2, job.FillUps.Count);
Assert.Same(f2, f1.Next);
}
public void FirstFillUp()
{
var job = new Job();
FillUp f = job.AddFillUp(odometer: 1000, liters: 60);
Assert.NotNull(f);
Assert.Equal(1000, f.Odometer);
Assert.Equal(60, f.Liters);
Assert.Equal(1, job.FillUps.Count);
}