title: How to mock HttpContext.Current.GetOwinContext() with Nunit and RhinoMocks?
body: <p>Compared to <a href="https://stackoverflow.com/questions/45239728/how-to-mock-httpcontext-current-items-with-nunit-and-rhino-mocks">my last question on Mocking the HttpContext</a>, I had to change the method being tested to </p>
  
  <pre><code>public override void OnActionExecuting(HttpActionContext actionContext)
  {
      HttpContext.Current.GetOwinContext().Set("RequestGUID", NewId.NextGuid());
      base.OnActionExecuting(actionContext);
  }
  </code></pre>
  
  <p>Now I need to figure out how to mock the 
  <code>HttpContext.Current.GetOwinContext()</code>,
  So I could write a stub for the <code>Set()</code> method, or generally being able to test this particular line. How can I do this? </p>