public void Can_process_pingback()
{
var mysite = "http://mysite.com/hello-world.aspx";
var yoursite = "http://yoursite.com/hello-world";
this.httpClient.Expect(x => x.DownloadString(mysite)).Return("bla bla <a href=\"http://yoursite.com/hello-world\">hello</a>");
pingbackService.ProcessPingback("http://mysite.com/hello-world.aspx","http://yoursite.com/hello-world");
}