public void GetExamByIdFetchingCourse_ShouldThrowExamNotFoundException()
{
// Arrange
Guid mockGuid = new Guid();
var expectedExams = new List <Domain.Entities.Exam> {
_exam
};
var mockExamsQueryable = expectedExams.AsQueryable().BuildMock();
_mockReadRepository.Setup(repo => repo.GetAll <Domain.Entities.Exam>()).Throws(new ExamNotFoundException(mockGuid));
// Act
Func <Task> act = async() => await _examService.GetByIdFetchingCourse(mockGuid);
// Assert
act.Should().Throw <ExamNotFoundException>();
}