public void Tweets_werden_gemappt() { var sut = new Mapper(); IEnumerable<Tweet> result = null; sut.Out_Result += x => result = x; var twitterSearchResultCollection = new TwitterSearchResultCollection { new TwitterSearchResult { FromUserScreenName = "Paul", ProfileImageLocation = "pic#1", CreatedDate = new DateTime(2003, 2, 1, 12, 05, 00), Source = "<a href=''>web</a>" } }; sut.In_Map(twitterSearchResultCollection); Assert.That(result.Count(), Is.EqualTo(1)); var tweet = result.First(); Assert.That(tweet.Name, Is.EqualTo("@Paul, 01.Feb 12:05 via web")); }