public void Should_finished_when_terminal_is_empty() { var boss = BossFake.Default(); var pillot = PilotFake.Default(); var officialOne = OfficialFake.Default(); var officialTwo = OfficialFake.Default(); var stewardessOne = StewardessFake.Default(); var stewardessTwo = StewardessFake.Default(); var cop = CopFake.Default(); var prisoner = PrisonerFake.Default(); _smartForTwo.AddPassenger(cop); _airplane.AddPassengers(boss, pillot, officialTwo, officialOne, stewardessOne, stewardessTwo, prisoner); var result = _airplaneService.AllPassengersOnThePlane(); result.Should().NotBeNullOrEmpty(); result.Should().Be("Ready to take flight!"); }