Mocking WebOperationContext

Question

I'm using the WCFMock to mock the WebOperationContext in my web service. The only usage is to add a custom HTTP header to the WebOperationContext.Current.OutgoingResponse.Headers collection. I'm unable to verify this using Moq. What I've already tried:

• Verify if the Add method is getting invoked. This fails because Add is not virtual
• Try to access the header directly from MockedWebOperationContext.Current. This is always zero in number

How can I verify in my unit test case that a custom header has been added?

Answer 1

Figured it out. Here's the solution for posterity.

When we create the "moq mock" for the IWebOperationContext, the example suggests that we set the property DefaultValue = DefaultValue.Mock. This will mock all dependincies including the HttpHeaders collection. I skipped this and mocked the OutgoingWebResponseContext to return a WebHeaderCollection. For my test case I simply assert on this collection.