Microsoft Dynamics CRM (Archived)

Mocking RetrieveEntityResponse - Is it possible?

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Posted on by Ben Walker

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This excellent article:

alexanderdevelopment.net/.../how-to-unit-test-c-dynamics-crm-interface-code-part-iii

demonstrates how it is possible to mock a RetrieveAttributeResponse to enable Unit Testing of plugin code which uses this Response class. It creates a wrapper class which can be used in the Unit Test.

I've been using this method to mock not only the RetrieveAttributeResponse, but also the RetrieveMultipleResponse and RetrieveEntityResponse classes.

However, I've hit a problem when trying to work with my RetrieveEntityResponseWrapper. The response needs to contain an instance of EntityMetadata, which I can instantiate in my mocked response. However, I need to set the Attributes property of the EntityMetadata, which is a read-only property.
So in some way I need to have a wrapped class within a wrapped class, and I don't see how I can do this?

Is what I'm trying to do possible - can I mock the read-only Attributes property of the EntityMetadata property of my RetrieveEntityResponseWrapper?

Many thanks for your thoughts,
Ben

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ScottDurow 21 on at

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How about using Fakes?

This test would pass - showing how to return AttributeMetadata from the read only Attributes property:

var entityMetadata = new EntityMetadata(); using (ShimsContext.Create()) { AttributeMetadata[] attributes = new AttributeMetadata[1]; attributes[0] = new AttributeMetadata(); Microsoft.Xrm.Sdk.Metadata.Fakes.ShimEntityMetadata. AllInstances.AttributesGet = (a) => { return attributes; }; Assert.AreEqual(1, entityMetadata.Attributes.Length); }

Hope this helps!

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JordiMontana 326 on at

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Hi Ben,

Sure you can. One simple solution I´ve come up with is by using Reflection. Here's what FakeXrmEasy is doing behind the scenes to automatically mock Entity Metadata responses for instance.

github.com/.../RetrieveEntityRequestExecutor.cs

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Ben Walker 265 on at

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You guys are awesome. As you know I'm already using FakeXRMEasy so I'll look at Jordi's suggestion first. Many thanks as ever for your most excellent contributions.

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Ben Walker 265 on at

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Working perfectly after a few issues with early bound generation. Thanks so much.

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JordiMontana 326 on at

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Glad it is working :)

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Riteesh on at

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Hey Jordi, I have ascenario where the requestentityrequest has entityfilters set to entityfilters.relationships. Here is the code snippet for reference:

RetrieveEntityRequest retrieveEntityRequest = new RetrieveEntityRequest

{

EntityFilters = EntityFilters.Relationships,

LogicalName = primaryEntity

};

FakeXRMEasy is throwing this error message:

"At least EntityFilters.Entity or EntityFilters.Attributes must be present on EntityFilters of Request."

Is there any workaround for this?

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