public void DeletePhotographer() { MockDAL mock = new MockDAL(); mock.InsertAllPictures(); mock.InsertAllEXIFData(); mock.InsertAllIPTCData(); mock.AddAndReturnPhotographer("John", "Wayne", "03.04.1981", ""); mock.AddAndReturnPhotographer("Bruce", "Wayne", "03.04.1981", ""); mock.AddAndReturnPhotographer("Homer", "Simpson", "03.04.1981", ""); mock.AddAndReturnPhotographer("Peter", "Griffin", "03.04.1981", ""); mock.DeletePhotographer("Homer", "Simpson"); Assert.That(mock.PhotographerList.Count, Is.EqualTo(3)); }