Unit Testing (Microsoft Fakes) RetrieveSharedPrincipalsAndAccessResponse in Plugin in CRM 2016 (and earlier)

Hi,

While trying to write Fakes for RetrieveSharedPrincipalsAndAccessResponse we’d realize that PrincipalAccess is read only property and the class itself is sealed.

So to unit test it we need to write a wrapper class as suggested here

http://alexanderdevelopment.net/post/2013/10/17/unit-testing-custom-microsoft-dynamics-crm-code-part-4/

The wrapper class


/// <summary>
/// Wrapper class for retrieve response
/// </summary>
[DataContract(Namespace = "http://schemas.microsoft.com/xrm/2011/Contracts")]
public class RetrieveSharedPrincipalsAndAccessResponseWrapper : OrganizationResponse
{
/// <summary>
/// The _entity
/// </summary>
private PrincipalAccess[] _principalaccess;

/// <summary>
/// Initializes a new instance of the <see cref="RetrieveResponseWrapper"/> class.
/// </summary>
/// <param name="response">The response.</param>
public RetrieveSharedPrincipalsAndAccessResponseWrapper(OrganizationResponse response)
{
try
{
this.PrincipalAccesses = ((RetrieveSharedPrincipalsAndAccessResponseWrapper)response).PrincipalAccesses;
}
catch
{
this.PrincipalAccesses = ((RetrieveSharedPrincipalsAndAccessResponse)response).PrincipalAccesses;
}
}

/// <summary>
/// Gets or sets the PrincipalAccesses.
/// </summary>
/// <value>
/// The entity.
/// </value>
public PrincipalAccess[] PrincipalAccesses
{
get
{
return _principalaccess;
}

set
{
_principalaccess = value;
}
}
}

The unit test


 organizationService.ExecuteOrganizationRequest = request =>
 { 
 RetrieveSharedPrincipalsAndAccessResponseWrapper retrieveResponseWrapper = new RetrieveSharedPrincipalsAndAccessResponseWrapper(new RetrieveSharedPrincipalsAndAccessResponse());
 PrincipalAccess[] principalAccess = new PrincipalAccess[1]; 
 PrincipalAccess pAccess = new PrincipalAccess();
 pAccess.AccessMask = AccessRights.CreateAccess;
 pAccess.Principal = new EntityReference("team", new Guid("9A69533A-2306-4DFC-9662-65ABFAB41348"));
 principalAccess[0] = pAccess;
 retrieveResponseWrapper.PrincipalAccesses = principalAccess; 
 return retrieveResponseWrapper;
 };

Change in the Plugin code using Wrapper instead of original class



 IOrganizationService orgService = serviceFactory.CreateOrganizationService(context.UserId);

 var accessRequest = new RetrieveSharedPrincipalsAndAccessRequest
 {
 Target = new EntityReference("projectsite", new Guid("CDF30DD5-C64E-4EF5-ABA6-C9715C10A07D"))
 };

 RetrieveSharedPrincipalsAndAccessResponseWrapper accessResponse = (new RetrieveSharedPrincipalsAndAccessResponseWrapper(orgService.Execute(accessRequest)));

Hope it helps