SilverlightShow: WCF RIA Services Part 8 - Testing and Debugging Comments

Re: WCF RIA Services Part 8 - Testing and Debugging

Fri, 14 Dec 2012 04:52:39 GMT

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Re: WCF RIA Services Part 8 - Testing and Debugging

brian.noyes — Thu, 13 Dec 2012 23:44:48 GMT

Nothing jumps out from glancing over the code and I'm afraid I don't have time to debug other people's code for free.

Re: WCF RIA Services Part 8 - Testing and Debugging

gnkarthik — Thu, 13 Dec 2012 19:16:51 GMT

Hi Brian,

Do you have any help for me on the above piece of code?

Re: WCF RIA Services Part 8 - Testing and Debugging

gnkarthik — Thu, 29 Nov 2012 20:17:25 GMT

Hi Brian,

Thanks for your immediate reply, I am posting my ViewModel, DomainService & Silverlight Test Class code below. Please let me know if you need anything else.

// View Model Code

public void DeleteCustomers()

{

if (CustomerData.Count > 0)

{

var selectedData = CustomerData.Where(d => d.IsDelete).ToList<MainPageModel>();

if (selectedData.Count > 0)

{

//MessageBoxResult result = MessageBox.Show("You are trying to delete customers. Are you sure?", "", MessageBoxButton.OKCancel);

//if (result == MessageBoxResult.OK)

//{

string cIds = string.Empty;

foreach (MainPageModel change in selectedData.Where(d => d.IsDelete))

{

cIds = string.Concat(cIds, Convert.ToString(change.CustomerId), ",");

}

cIds = cIds.TrimEnd(',');

CDomainContext.DelCustomers(cIds).Completed += new EventHandler(CustomerDelete_Completed);

//}

}

else

{

//MessageBox.Show("Please select a customer to delete.");

//return;

}

else

{

//MessageBox.Show("No data to delete.");

//return;

}

private void CustomerDelete_Completed(object sender, EventArgs e)

{

GetCustomers();

}

// Test Class Code

[TestMethod, Asynchronous]

public void Test_DeleteCustomers()

{

// Arrange ---------------------------------

bool submitExecuted = false;

var domainClientStub = new Mock<TestDomainClient>();

domainClientStub.Setup(d => d.Invoke(It.Is<InvokeArgs>(q => q.ReturnType == typeof(void))))

.Callback(() => submitExecuted = true)

.Returns(new InvokeCompletedResult(typeof(void)));

List<MainPageModel> testData = new List<MainPageModel>();

testData.Add(new MainPageModel() { FirstName = "karthik", LastName = "G", CustomerId = 0 });

testData.Add(new MainPageModel() { FirstName = "Fedrick", LastName = "D", CustomerId = 1, IsDelete = true });

testData.Add(new MainPageModel() { FirstName = "Steve", LastName = "K", CustomerId = 2 });

// Act -------------------------------------

MainPageViewModel viewModel = new MainPageViewModel(domainClientStub.Object);

viewModel.CustomerData = testData;

EnqueueCallback(() => viewModel.DeleteCustomers());

// Assert ---------------------------------

EnqueueConditional(() => submitExecuted);

EnqueueCallback(() =>

{

Assert.AreEqual(2, viewModel.CustomerData.Count);

});

EnqueueTestComplete();

//List<MainPageModel> testData = new List<MainPageModel>();

//testData.Add(new MainPageModel() { FirstName = "karthik", LastName = "guntupalli", CustomerId = 0 });

//testData.Add(new MainPageModel() { FirstName = "jotsna", LastName = "dammavalam", CustomerId = 1, IsDelete = true });

//testData.Add(new MainPageModel() { FirstName = "sameer", LastName = "gottipati", CustomerId = 2 });

}

// Domain Service Code

public void DelCustomers(string ids)

{

ObjectContext.DeleteCustomers(ids);

}

Re: WCF RIA Services Part 8 - Testing and Debugging

gnkarthik — Thu, 29 Nov 2012 20:15:34 GMT

Hi Brian,

Thanks for your immediate reply, I am posting my ViewModel, DomainService & Silverlight Test Class code below. Please let me know if you need anything else.

// View Model Code

public void DeleteCustomers()

{

if (CustomerData.Count > 0)

{

var selectedData = CustomerData.Where(d => d.IsDelete).ToList<MainPageModel>();

if (selectedData.Count > 0)

{

//MessageBoxResult result = MessageBox.Show("You are trying to delete customers. Are you sure?", "", MessageBoxButton.OKCancel);

//if (result == MessageBoxResult.OK)

//{

string cIds = string.Empty;

foreach (MainPageModel change in selectedData.Where(d => d.IsDelete))

{

cIds = string.Concat(cIds, Convert.ToString(change.CustomerId), ",");

}

cIds = cIds.TrimEnd(',');

CDomainContext.DelCustomers(cIds).Completed += new EventHandler(CustomerDelete_Completed);

//}

}

else

{

//MessageBox.Show("Please select a customer to delete.");

//return;

}

else

{

//MessageBox.Show("No data to delete.");

//return;

}

private void CustomerDelete_Completed(object sender, EventArgs e)

{

GetCustomers();

}

// Test Class Code

[TestMethod, Asynchronous]

public void Test_DeleteCustomers()

{

// Arrange ---------------------------------

bool submitExecuted = false;

var domainClientStub = new Mock<TestDomainClient>();

domainClientStub.Setup(d => d.Invoke(It.Is<InvokeArgs>(q => q.ReturnType == typeof(void))))

.Callback(() => submitExecuted = true)

.Returns(new InvokeCompletedResult(typeof(void)));

List<MainPageModel> testData = new List<MainPageModel>();

testData.Add(new MainPageModel() { FirstName = "karthik", LastName = "G", CustomerId = 0 });

testData.Add(new MainPageModel() { FirstName = "Fedrick", LastName = "D", CustomerId = 1, IsDelete = true });

testData.Add(new MainPageModel() { FirstName = "Steve", LastName = "K", CustomerId = 2 });

// Act -------------------------------------

MainPageViewModel viewModel = new MainPageViewModel(domainClientStub.Object);

viewModel.CustomerData = testData;

EnqueueCallback(() => viewModel.DeleteCustomers());

// Assert ---------------------------------

EnqueueConditional(() => submitExecuted);

EnqueueCallback(() =>

{

Assert.AreEqual(2, viewModel.CustomerData.Count);

});

EnqueueTestComplete();

//List<MainPageModel> testData = new List<MainPageModel>();

//testData.Add(new MainPageModel() { FirstName = "karthik", LastName = "guntupalli", CustomerId = 0 });

//testData.Add(new MainPageModel() { FirstName = "jotsna", LastName = "dammavalam", CustomerId = 1, IsDelete = true });

//testData.Add(new MainPageModel() { FirstName = "sameer", LastName = "gottipati", CustomerId = 2 });

}

// Domain Service Code

public void DelCustomers(string ids)

{

ObjectContext.DeleteCustomers(ids);

}

Re: WCF RIA Services Part 8 - Testing and Debugging

gnkarthik — Thu, 29 Nov 2012 20:07:35 GMT

Hi Brian,

Thanks for your immediate reply, I am posting my ViewModel, DomainService & Silverlight Test Class code below. Please let me know if you need anything else.

// View Model Code

public void DeleteCustomers()

{

if (CustomerData.Count > 0)

{

var selectedData = CustomerData.Where(d => d.IsDelete).ToList<MainPageModel>();

if (selectedData.Count > 0)

{

//MessageBoxResult result = MessageBox.Show("You are trying to delete customers. Are you sure?", "", MessageBoxButton.OKCancel);

//if (result == MessageBoxResult.OK)

//{

string cIds = string.Empty;

foreach (MainPageModel change in selectedData.Where(d => d.IsDelete))

{

cIds = string.Concat(cIds, Convert.ToString(change.CustomerId), ",");

}

cIds = cIds.TrimEnd(',');

CDomainContext.DelCustomers(cIds).Completed += new EventHandler(CustomerDelete_Completed);

//}

}

else

{

//MessageBox.Show("Please select a customer to delete.");

//return;

}

else

{

//MessageBox.Show("No data to delete.");

//return;

}

private void CustomerDelete_Completed(object sender, EventArgs e)

{

GetCustomers();

}

// Test Class Code

[TestMethod, Asynchronous]

public void Test_DeleteCustomers()

{

// Arrange ---------------------------------

bool submitExecuted = false;

var domainClientStub = new Mock<TestDomainClient>();

domainClientStub.Setup(d => d.Invoke(It.Is<InvokeArgs>(q => q.ReturnType == typeof(void))))

.Callback(() => submitExecuted = true)

.Returns(new InvokeCompletedResult(typeof(void)));

List<MainPageModel> testData = new List<MainPageModel>();

testData.Add(new MainPageModel() { FirstName = "karthik", LastName = "G", CustomerId = 0 });

testData.Add(new MainPageModel() { FirstName = "Fedrick", LastName = "D", CustomerId = 1, IsDelete = true });

testData.Add(new MainPageModel() { FirstName = "Steve", LastName = "K", CustomerId = 2 });

// Act -------------------------------------

MainPageViewModel viewModel = new MainPageViewModel(domainClientStub.Object);

viewModel.CustomerData = testData;

EnqueueCallback(() => viewModel.DeleteCustomers());

// Assert ---------------------------------

EnqueueConditional(() => submitExecuted);

EnqueueCallback(() =>

{

Assert.AreEqual(2, viewModel.CustomerData.Count);

});

EnqueueTestComplete();

//List<MainPageModel> testData = new List<MainPageModel>();

//testData.Add(new MainPageModel() { FirstName = "karthik", LastName = "guntupalli", CustomerId = 0 });

//testData.Add(new MainPageModel() { FirstName = "jotsna", LastName = "dammavalam", CustomerId = 1, IsDelete = true });

//testData.Add(new MainPageModel() { FirstName = "sameer", LastName = "gottipati", CustomerId = 2 });

}

// Domain Service Code

public void DelCustomers(string ids)

{

ObjectContext.DeleteCustomers(ids);

}

Re: WCF RIA Services Part 8 - Testing and Debugging

brian.noyes — Thu, 29 Nov 2012 14:33:10 GMT

Its hard to say without seeing the whole code, but you are adding 3 items, then calling DeleteCustomers (which I would presume should be clearing the collection) and then you are asserting that the count is 2. Something doesn't add up there.

Re: WCF RIA Services Part 8 - Testing and Debugging

gnkarthik — Thu, 29 Nov 2012 13:56:10 GMT

Hi Brian,

This is an amazing article i read for a long time and you deserve all credit for it. However i have a question. I am using LinqToEntitiesDomainContext, not Entites (i.e. Task) but a ComplexType for Update/Insert/Delete. I could MoQ and test the dependency for Select. but i am unable to test the U/I/D. Please find below sample code of what i am trying to achieve and please suggest:

// Arrange --------------------------------

bool submitExecuted = false;

var domainClientStub = new Mock<TestDomainClient>();

domainClientStub.Setup(d => d.Invoke(

It.Is<InvokeArgs>(q => q.ReturnType == typeof(void)))).Callback(() => submitExecuted = true)

.Returns(new InvokeCompletedResult(typeof(void)));

List<MainPageModel> testData = new List<MainPageModel>();

testData.Add(new MainPageModel() { FirstName = "karthik", LastName = "G", CustomerId = 0 });

testData.Add(new MainPageModel() { FirstName = "Fedrick", LastName = "D", CustomerId = 1, IsDelete = true });

testData.Add(new MainPageModel() { FirstName = "Steve", LastName = "K", CustomerId = 2 });

// Act -------------------------------------

MainPageViewModel viewModel = new MainPageViewModel(domainClientStub.Object);

viewModel.CustomerData = testData;

EnqueueCallback(() => viewModel.DeleteCustomers());

//Assert ---------------------------------

EnqueueConditional(() => submitExecuted);

EnqueueCallback(() =>

{

Assert.AreEqual(2, viewModel.CustomerData.Count);

});

EnqueueTestComplete();

Re: WCF RIA Services Part 8 - Testing and Debugging

brian.noyes — Wed, 07 Mar 2012 15:09:47 GMT

Rob, glad to hear you sorted it out. Thanks for putting the solution here in the comments for others to benefit from. It easy to get bitten with the transparent code gen that happens at build time if you have it happening in two places and pull them together into the same scope. I've done it to myself on several occasions.

Re: WCF RIA Services Part 8 - Testing and Debugging

robt — Wed, 07 Mar 2012 08:21:47 GMT

Brian,

Thanks for taking the time to get back to me, especially so quickly. I ended up using Reflector and stepping through the code. Turns out my real issue was having RIA Services linked in both the silverlight project and in the unit test project. This was auto generating the same DomainContext classes in two places. Since everything still compiled I figured it was just an overactive Resharper giving me warnings. What was actually failing was a comparison deep inside EntityContainer where it was looking through the EntitySet for matching types. What was in there was a match in name only, since the actual Types were coming from two separate dlls.

I hope that all makes sense and thanks again for your time.

Rob

Re: WCF RIA Services Part 8 - Testing and Debugging

brian.noyes — Wed, 07 Mar 2012 03:54:48 GMT

So are you saying you tried doing the Mock.Setup call with the entity type instead of the QueryName and it did not work? I can kind of see why you would get the error you are describing by doing the setup that way because now the mock domain client has no information about the types it is exposing. When you setup the mock based on the type of the entity, it implicitly has type information to match against.

But other than that, I have no idea why checking for your entity type would not work for you, nor exactly why not checking based on entity type would cause what you are seeing without going and doing a lot of digging with Reflector.

Regards

Brian

Re: WCF RIA Services Part 8 - Testing and Debugging

robt — Tue, 06 Mar 2012 19:58:27 GMT

Brian,

Thanks for the article, it is very informative. I'm having some trouble implementing it and was hoping you could provide some insight.I've created the TestDomainClient and am injecting it into the DomainContext as you describe. Here is my Mock setup:

var domainClientMock = new Mock();
domainClientMock
.Setup(dc => dc.Query(It.Is(query => query.QueryName == "GetCorrespondences")))
.Callback(() => loadExecuted = true)
.Returns(() => new Entity[]
{
new CorrespondenceDTO{ Id=new Guid(),ProgramName = "name1",Title="title1",Description = "description1"},
new CorrespondenceDTO{ Id=new Guid(),ProgramName = "name2",Title="title2",Description = "description2"}
}.AsQueryable()
}

You may notice that I had to change the .Setup(...) a bit otherwise it was not finding the query. It would get into BeginQueryCore and not have a value in results. It's working now (in so much as it does have the test data in results). I also have my injected values in EndQueryCore (when I step through it). And now we come to where the wheels fall off for me.

When I step out of EndQueryCore and into the ViewModel where I step into the Completed event handler for the LoadOperation the Error property for the LoadOperation is

"Load operation failed for query 'GetCorrespondences'. This EntityContainer does not contain an EntitySet of type 'BasicDemo.Web.Models.CorrespondenceDTO'. If the type is external to this EntityContainer, please make sure you’ve called AddReference to establish the external link."

Just for fun I tried calling AddReference on my DomainContext and passing in the CorrespondenceDTO, but it throws an error stating that it it already there. Is this enough info for you to even hazard a guess?

Re: WCF RIA Services Part 8 - Testing and Debugging

brian.noyes — Mon, 01 Aug 2011 15:52:11 GMT

You can also find the sample code here: http://www.softinsight.com/downloads/Articles/SilverlightShow/TaskManagerPart8.zip

Re: WCF RIA Services Part 8 - Testing and Debugging

Arushi — Mon, 01 Aug 2011 10:09:51 GMT

The link for the source code does not work!!! Please help it's such a useful article. Thanks.

RE: WCF RIA Services Part 8 - Testing and Debugging

Brian Noyes — Wed, 01 Jun 2011 00:55:42 GMT

Abraham,

Nice post! Thanks for adding the link here for additional approaches to being more testable on the server side.

Brian

RE: WCF RIA Services Part 8 - Testing and Debugging

Isaac Abraham — Tue, 31 May 2011 23:13:14 GMT

Ehm... that last comment should have read "you need a way to mock the object context".

RE: WCF RIA Services Part 8 - Testing and Debugging

Isaac Abraham — Tue, 31 May 2011 23:12:25 GMT

@Colin: Any query you perform in a domain service on the ObjectContext (in a linq-to-entities domain service) will attempt to go to the database. So you need a way to mock the service, only this (apparently) can't be done as the EF Domain Service is closely coupled to the context. So you either go for the repository pattern / use a standard Domain Context and manually control lifetime of the context or use proxy classes. I blog about it here... http://cockneycoder.wordpress.com/2011/05/28/testing-out-the-entity-framework-wcf-ria-services-domain-service.

Hope that helps someone...

RE: WCF RIA Services Part 8 - Testing and Debugging

Resad Zacina — Thu, 21 Apr 2011 23:35:12 GMT

This is the best series on RIA Services i have found so far, thank you very much for the great work!

RE: WCF RIA Services Part 8 - Testing and Debugging

brian.noyes — Fri, 07 Jan 2011 01:12:07 GMT

Nice tip Colin, thanks much!

RE: WCF RIA Services Part 8 - Testing and Debugging

Colin Blair — Thu, 06 Jan 2011 17:51:29 GMT

For unit testing the DomainService code, in a normal LinqToEntitiesDomainService the only call being done to the database will be in the PersistChangeSet method. If you override that method and, during testing, call the AcceptAllChanges method instead of the SaveChanges method you will simulate a successful save to the database. You can start a full test of the full Submit process by calling the Submit method with your own ChangeSet object. Almost over step of the Submit process has an overridable method if you want to unit test the entire chain. There are instructions on the WCF RIA Services wiki on how to setup the DomainService in test.

RE: WCF RIA Services Part 8 - Testing and Debugging

Matt — Wed, 24 Nov 2010 19:08:10 GMT

Great series! I just read through the whole thing. Sadly I have to agree that RIA Services is not very testable. It's by far my biggest complaint against it. I also hate to admit that how difficult it is to test RIA Services is enough for me to consider adopting different technology altogether. RIA Services team, if you're listening, please address this.

Anyway, another way to find the URL for your WCF service is to open the generated code file on the client side (it is named something like "MyWebApp.Web.g.cs", and just search for ".svc" in that file. You will find the constructors that create the WebDomainClients, and it will contain a string literal with the URI of the svc.