public void CorrectlyAddVehicle()
{
string plate = "912389SADAB1JSK";
int vehiclesInList = vvm.VehiclesCollection.Count;
int vehiclesInModel = new List <Vehicle>(Vehicles.All()).Count;
vvm.AddVehicle(true);
Assert.AreNotEqual(null, vvm.AddVehicleWindow);
vvm.HandleAddVehicle(plate, 1);
Assert.AreEqual(vehiclesInList + 1, vvm.VehiclesCollection.Count);
Assert.AreEqual(vehiclesInModel + 1, new List <Vehicle>(Vehicles.All()).Count);
List <Vehicle> vehiclesList = new List <Vehicle>(Vehicles.All());
Vehicle vehicle = vehiclesList.FindLast(i => i.Plate == plate);
if (vehicle == null)
{
Assert.Fail();
}
vvm.SelectedVehicle = vehicle;
Vehicles.Delete(vehicle.Id);
}