public void Get_storage()
{
/* all testing will be touching just a single storage cell */
var storageCell = new StorageCell(TestItem.AddressA, 1);
/* to start with we need to create an account that we will be setting storage at */
_stateProvider.CreateAccount(storageCell.Address, UInt256.One);
_stateProvider.Commit(MuirGlacier.Instance);
_stateProvider.CommitTree();
/* at this stage we have an account with empty storage at the address that we want to test */
byte[] initialValue = new byte[] { 1, 2, 3 };
_storageProvider.Set(storageCell, initialValue);
_storageProvider.Commit();
_storageProvider.CommitTrees();
_stateProvider.Commit(MuirGlacier.Instance);
_stateProvider.CommitTree();
var retrieved =
_blockchainBridge.GetStorage(storageCell.Address, storageCell.Index, _stateProvider.StateRoot);
retrieved.Should().BeEquivalentTo(initialValue);
/* at this stage we set the value in storage to 1,2,3 at the tested storage cell */
/* Now we are testing scenario where the storage is being changed by the block processor.
* To do that we create some different storage / state access stack that represents the processor.
* It is a different stack of objects than the one that is used by the blockchain bridge. */
byte[] newValue = new byte[] { 1, 2, 3, 4, 5 };
StateProvider processorStateProvider =
new StateProvider(_dbProvider.StateDb, _dbProvider.CodeDb, LimboLogs.Instance);
processorStateProvider.StateRoot = _stateProvider.StateRoot;
StorageProvider processorStorageProvider =
new StorageProvider(_dbProvider.StateDb, processorStateProvider, LimboLogs.Instance);
processorStorageProvider.Set(storageCell, newValue);
processorStorageProvider.Commit();
processorStorageProvider.CommitTrees();
processorStateProvider.Commit(MuirGlacier.Instance);
processorStateProvider.CommitTree();
/* At this stage the DB should have the storage value updated to 5.
* We will try to retrieve the value by taking the state root from the processor.*/
retrieved =
_blockchainBridge.GetStorage(storageCell.Address, storageCell.Index, processorStateProvider.StateRoot);
retrieved.Should().BeEquivalentTo(newValue);
/* If it failed then it means that the blockchain bridge cached the previous call value */
}
