public async Task getAllExamsForACourse_ShouldReturnListOfExamDto()
        {
            var course = new Course(_exam.Course.Name, _exam.Course.Year, new List <Domain.Entities.Exam> {
                _exam
            });
            var courses = new List <Course> {
                course
            };
            var exams = new List <ExamDto> {
                _examDto
            };
            var mockExamsQueryable = courses.AsQueryable().BuildMock();

            _mockReadRepository.Setup(repo => repo.GetAll <Domain.Entities.Course>()).Returns(mockExamsQueryable);
            _mockExamMapper.Setup(mapper => mapper.Map(_exam)).Returns(_examDto);
            var actualExamsDtoList = await _examService.GetAllExamsForACourse(course.Id);

            // Assert
            actualExamsDtoList.Should().BeEquivalentTo(exams);
        }