public async Task Add_Block_Success()
        {
            var transactions = new List <Transaction>();

            for (var i = 0; i < 3; i++)
            {
                var transaction = _kernelTestHelper.GenerateTransaction();
                transactions.Add(transaction);
            }

            var block = _kernelTestHelper.GenerateBlock(0, Hash.Empty, transactions);

            var existBlock = await _fullBlockchainService.GetBlockByHashAsync(block.GetHash());

            existBlock.ShouldBeNull();

            await _fullBlockchainService.AddBlockAsync(block);

            existBlock = await _fullBlockchainService.GetBlockByHashAsync(block.GetHash());

            existBlock.ShouldBe(block);

            var blockHeader = await _fullBlockchainService.GetBlockHeaderByHashAsync(block.GetHash());

            blockHeader.ShouldBe(block.Header);
        }