public void TestReadWriteOptions()
        {
            using (var persistence = GetPersistence())
            {
                var user = persistence.CreateUser(_userDto.Login, _userDto.HashedPassword);

                var disk = persistence.CreateDisk(user, new DiskOptionsDto());
                disk.LocalVersion = 10;
                disk.LastServerVersion = 10;
                persistence.UpdateDisk(disk);

                var s = new DiskServiceImpl(persistence);

                var b = new byte[] { 1, 2, 3 };

                s.SetDiskOptions(user, disk, new DiskOptionsDto { SerializedFileSystemOptions = b });
                var actual = s.GetDiskOptions(user, disk);
                Assert.AreEqual(b.Length, actual.SerializedFileSystemOptions.Length);
                Assert.AreEqual(1, actual.SerializedFileSystemOptions[0]);
                Assert.AreEqual(2, actual.SerializedFileSystemOptions[1]);
                Assert.AreEqual(3, actual.SerializedFileSystemOptions[2]);
            }
        }