public void GetQuestionFromQuestionnaire(int questionId)
{
var questionnaire = _dbMock.Object.Questionnaires.First(q => q.Id == 1);
var expectedQuestion = questionnaire.Questions.FirstOrDefault(q => q.Id == questionId);
var question = _questionnaireService.GetQuestionFromQuestionnaire(questionnaire.Id, questionId);
Assert.Equal(expectedQuestion, question);
}