public void CountCorrectAnswers_set_the_count_to_zero()
{
int actualCount = 0;
Exercise exercise = new Exercise {
FirstNumber = 1, SecondNumber = 1, Level = "Beginner", QuestionId = "someguid"
};
Mock <IExercise> mockExercise = new Mock <IExercise>();
ExerciseService exerciseService = new ExerciseService(mockExercise.Object);
exerciseService.Answers.Add(new SysAnswer {
QuestionId = "someguid", Answer = 2
});
UserAnswer userAnswer = new UserAnswer {
QuestionId = "someguid", Answer = 3
};
int expectedCount = exerciseService.CountCorrectAnswers(userAnswer);
Assert.IsTrue(expectedCount == actualCount);
}