gistfile1.txt

//Test

[TestMethod]
public void CanLookupForManufacturerWhenChangingTheManufacturerCode()
{
    var backend = new Mock<IBackend>();
    backend.Setup(be => be.SendAndReceive<GetEntityResponse<CustomerDetailsDto>>(It.Is<GetCustomerByCodeRequest>(re => re.Code == "123")))
        .Returns(new GetEntityResponse<CustomerDetailsDto> { Entity = new CustomerDetailsDto { CodeFld = "123", Name = "Tito Fuentes", Id = 123 } });

    var editViewModel = new EditArticleViewModel
    {
        Backend = backend.Object,
        Mapper = MapperHelper.Create(),
        EventPublisher = Mock.Of<IEventPublisher>(),
        Parent = Mock.Of<IConductor>(),
        InteractionService = Mock.Of<IInteractionService>()
    };

    //act
    editViewModel.ManufacturerCode = "123";

    editViewModel.Satisfy( vm => vm.ManufacturerName == "Tito Fuentes" 
                                && vm.ManufacturerCode == "123" 
                                && vm.ManufacturerId == 123);

}

//Implementation

public string ManufacturerCode
{
    get { return manufacturerCode; }
    set
    {
        manufacturerCode = value;
        NotifyOfPropertyChange(() => ManufacturerCode);
        if (isLoadingData) return;
        Execute.OnBackgroundThread(ReloadManufacturer);
    }
}

private void ReloadManufacturer()
{
    if (string.IsNullOrEmpty(ManufacturerCode))
    {
        ManufacturerId = 0;
        manufacturerName = string.Empty;
        return;
    }
    var request = new GetCustomerByCodeRequest { Code = ManufacturerCode };
    var response = Backend.SendAndReceive<GetEntityResponse<CustomerDetailsDto>>(request);
    if (response == null || response.Entity == null)
    {
        InteractionService.Info("Articles","The manufacturer code entered is invalid.");
        return;
    }
    ManufacturerId = response.Entity.Id;
    ManufacturerName = response.Entity.Name;
}