public void ShouldGetAJourneyTime()
{
IPort portBuenosAires = _portRepository.GetPort("Buenos Aires");
IPort portNy = _portRepository.GetPort("New York");
IPort portLiverpool = _portRepository.GetPort("Liverpool");
IPort portCasablanca = _portRepository.GetPort("Casablanca");
IPort portCapetown = _portRepository.GetPort("Cape Town");
var journey = new Journey <IPort>(_routeRepository).WithPort(portBuenosAires).WithPort(portNy).WithPort(portLiverpool);
var journey2 = new Journey <IPort>(_routeRepository).WithPort(portBuenosAires).WithPort(portCasablanca).WithPort(portLiverpool);
var journey3 = new Journey <IPort>(_routeRepository).WithPort(portBuenosAires).WithPort(portCapetown).WithPort(portNy).WithPort(portLiverpool).WithPort(portCasablanca);
var invalidjourney = new Journey <IPort>(_routeRepository).WithPort(portBuenosAires).WithPort(portCapetown).WithPort(portCasablanca);
Assert.That(journey.GetTime(), Is.EqualTo(10));
Assert.That(journey2.GetTime(), Is.EqualTo(8));
Assert.That(journey3.GetTime(), Is.EqualTo(19));
Assert.That(invalidjourney.GetTime(), Is.EqualTo(0));
}