public void Repository_CommitAndRollbackTest()
{
ISource <byte[], byte[]> stateDB = new NoDeleteSource <byte[], byte[]>(new MemoryDictionarySource());
StateRepositoryRoot repository = new StateRepositoryRoot(stateDB);
IStateRepository txTrack = repository.StartTracking();
txTrack.CreateAccount(testAddress);
txTrack.SetStorageValue(testAddress, dog, cat);
txTrack.Commit();
repository.Commit();
byte[] root1 = repository.Root;
IStateRepository txTrack2 = repository.StartTracking();
txTrack2.SetStorageValue(testAddress, dog, fish);
txTrack2.Rollback();
IStateRepository txTrack3 = repository.StartTracking();
txTrack3.SetStorageValue(testAddress, dodecahedron, bird);
txTrack3.Commit();
repository.Commit();
byte[] upToDateRoot = repository.Root;
Assert.Equal(cat, repository.GetStorageValue(testAddress, dog));
Assert.Equal(bird, repository.GetStorageValue(testAddress, dodecahedron));
IStateRepository snapshot = repository.GetSnapshotTo(root1);
repository.SyncToRoot(root1);
Assert.Equal(cat, snapshot.GetStorageValue(testAddress, dog));
Assert.Null(snapshot.GetStorageValue(testAddress, dodecahedron));
}