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Error while trying to Mock DataServiceQuery<T>

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Javier
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Javier asked on 24 Oct 2013, 08:43 AM
Hi I am trying to mock a Property that is of type DataServiceQuery<EntityLock> like this:

locksViewModel.Query = Mock.Create<DataServiceQuery<EntityLock>>();
 as soon as I try to execute this line I am getting the next exception:

Initialization method Tgw.Wcs.Windows.U.Test.ComponentTests.Modules.LoadCarriers.LocksViewModelTest.TestInitialize threw exception. System.TypeInitializationException: System.TypeInitializationException: The type initializer for 'System.Data.Services.Client.DataServiceQuery`1' threw an exception. ---> System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.

I have also tried not to Mock this property and initialize it in the constructor of the class that I am trying to test:

here is part of the constructor:

public LocksViewModel(IEnumerable<LoadCarrier> selectedLoadCarriers, ILoadCarrierRepository loadCarrierRepository)
      {
          if (selectedLoadCarriers != null && loadCarrierRepository != null)
          {
              DataContext = loadCarrierRepository.DataModelServiceContext;
              Query = (DataServiceQuery<EntityLock>)loadCarrierRepository.GetEntityLocks(selectedLoadCarriers.Select(x=>x.Id));


And here is part of my InitializeTest:
IQueryable<EntityLock> entityLocks = Mock.Create<IQueryable<EntityLock>>();
 
           LoadCarrierRepository loadCarrierRepository = Mock.Create<LoadCarrierRepository>();
           loadCarrierRepository.DataContext = Mock.Create<ClientDataModelServiceContext>();
            
 
           Mock.Arrange(() => loadCarrierRepository.GetEntityLocks(Arg.IsAny<IEnumerable<Guid>>())).ReturnsCollection(entityLocks);
           Mock.Arrange(() => loadCarrierRepository.GetLockReasons()).ReturnsCollection(new List<string> { "fooLockReason1", "fooLockReason2" });
           locksViewModel = new LocksViewModel(new ObservableCollectionEx<LoadCarrier>() { loadCarrier }, loadCarrierRepository);
And I am getting this exception: Initialization method Tgw.Wcs.Windows.U.Test.ComponentTests.Modules.LoadCarriers.LocksViewModelTest .TestInitialize threw exception. System.InvalidCastException: System.InvalidCastException: Unable to cast object of type 'Castle.Proxies.IQueryable`1Proxy' to type 'System.Data.Services.Client.DataServiceQuery`1[Tgw.Wcs.Windows.Data.UIModel.EntityLock]'..

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Kaloyan
Telerik team
answered on 25 Oct 2013, 01:47 PM
Hi Javier,

Thank you for contacting our support.

We will require additional information in order to reproduce the issue on our side.

Can you send us a sample project, reproducing this behavior? It will help us investigate the matter and provide the correct solution for it.

If sending us a sample project is not possible, please give us the information from the LoaderExceptions property. To acquire it:
  1. Add the failing line to your TestInitialize again:
    locksViewModel.Query = Mock.Create<DataServiceQuery<EntityLock>>();
  2. Check this link in StackOverflow.com in order to retrieve the LoaderException property;
  3. Debug a test;
  4. Copy the whole information from that property and send it with you next reply.

Thank you for the help and the understanding in advance.


Regards,
Kaloyan
Telerik
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Kaloyan
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