public void DefaultValidation_CourseIsNull_ShouldThrowException()
        {
            ICourseValidator courseValidator = new CourseValidator();
            Action           action          = () => courseValidator.DefaultValidation(null as Course);

            action.Should().Throw <NullReferenceException>().WithMessage("Course can not be null");
        }
        public void DefaultValidation_CourseNameIsEmpty_ShouldThrowException()
        {
            ICourseValidator courseValidator = new CourseValidator();
            Action           action          = () => courseValidator.DefaultValidation(new Course()
            {
            });

            action.Should().Throw <ArgumentException>().WithMessage("Course Name can not be empty");
        }