Fix statedb unit tests (#14)

* debug code

* Fix more unit tests

* remove traces

* Go back to the full range

core/state/database.go

@@ -232,10 +232,16 @@ func (db *VerkleDB) OpenStorageTrie(accTrie Trie, addrHash, root common.Hash) (T
 // CopyTrie returns an independent copy of the given trie.
 func (db *VerkleDB) CopyTrie(tr Trie) Trie {
 	t, ok := tr.(*trie.VerkleTrie)
-	if !ok {
-		panic("invalid tree type != VerkleTrie")
+	if ok {
+		return t.Copy(db.db)
 	}
-	return t.Copy(db.db)
+
+	s, ok := tr.(*trie.VerkleStorageAdapter)
+	if ok {
+		return s.Copy(db.db)
+	}
+
+			panic("invalid tree type != VerkleTrie")
 }
 
 // ContractCode retrieves a particular contract's code.

trie/verkle.go

@@ -159,13 +159,16 @@ func (adapter *VerkleStorageAdapter) TryUpdate(key, value []byte) error {
 // TryDelete removes any existing value for key from the trie. If a node was not
 // found in the database, a trie.MissingNodeError is returned.
 func (adapter *VerkleStorageAdapter) TryDelete(key []byte) error {
-	return adapter.trie.root.Delete(key)
+	return adapter.trie.root.Delete(adapter.key2Storage(key))
 }
 
 // Hash returns the root hash of the trie. It does not write to the database and
 // can be used even if the trie doesn't have one.
 func (adapter *VerkleStorageAdapter) Hash() common.Hash {
-	return adapter.trie.Hash()
+	// Return an empty hash for the moment.
+	// XXX this could be the wrong value, but at this stage I don't
+	// want to send the signal that this account has no storage.
+	return common.Hash{}
 }
 
 // Commit writes all nodes to the trie's memory database, tracking the internal