public void GetEntityWithNotExistingID()
{
TopicRepository repository = new TopicRepository();
Topic resultTopic = repository.GetEntity <Topic>(NotExistindID);
Assert.IsNull(resultTopic);
}
public void GetEntityEqualsToOriginal()
{
TopicRepository repository = new TopicRepository();
List <Topic> topics = repository.Topics;
Topic resultRole = repository.GetEntity <Topic>(ExistingID);
Assert.AreEqual(repository.Topics.Where(u => u.ID == ExistingID).FirstOrDefault(), resultRole);
}