public void GetWithIncludeAsync_Attendance_GetsCorrectly()
        {
            using var context = new UniversityContext(builder.Options);
            var repository = new AttendanceRepository(context);

            var attendance = new Attendance()
            {
                StudentId = 1, LessonInScheduleId = 1, IsPresent = true
            };
            var res = repository.AddAsync(attendance).Result;
            var attendanceFromDb = repository.GetByIdWithIncludeAsync(res.Id).Result;

            Assert.Multiple(() =>
            {
                Assert.That(attendanceFromDb.LessonInSchedule, Is.Not.EqualTo(null));
                Assert.That(attendanceFromDb.Student, Is.Not.EqualTo(null));
            });
        }