public void TestAddNotKnown()
        {
            var CorrectQuestion = new Question()
            {
                Text = "Test Question", ChosenAnswer = new Answer {
                    Text = "First Answer"
                }, Answers = new List <Answer>()
                {
                    new Answer()
                    {
                        Text = "First Answer", IsCorrect = true
                    }, new Answer()
                    {
                        Text = "Second Answer", IsCorrect = false
                    }
                }
            };

            testInterpreter.AddNotKnown(CorrectQuestion);
            Assert.AreEqual(CorrectQuestion.Answers.Count, 3);
        }