public void RemoveStudent_ExecutesCorrectlyOnRemove()
        {
            Course course = new Course(".NET");

            for (int i = 0; i < 10; i++)
            {
                course.AddNewStudent(new Student("Student" + i));
            }

            course.RemoveStudent(Student.NextID - 5);
        }
 public void RemoveStudent_ThrowsExceptionOnNotFound()
 {
     Course course = new Course(".NET");
     course.RemoveStudent(23);
 }