public void GetDepartureByVehicleId_ShouldReturn_Null() { // Arrange DepartureEntity departureEntity = new DepartureEntityBuilder() .WithId(Guid.NewGuid().ToString()) .WithIdVehicle("ASD123") .Build(); var vehicleId = "AAA111"; _departureRepository.Setup(r => r.List(dr => dr.IdVehicle == vehicleId)).Returns(new List <DepartureEntity>()); var entryService = new DepartureService(_departureRepository.Object, _entryRepository.Object, _rateService.Object, _cellService.Object); // Act DepartureEntity result = entryService.GetDepartureByVehicleId(vehicleId); // Assert Assert.IsNull(result); }