core, trie: new trie

trie/secure_trie_test.go

@@ -0,0 +1,74 @@
+// Copyright 2015 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package trie
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethdb"
+)
+
+func newEmptySecure() *SecureTrie {
+	db, _ := ethdb.NewMemDatabase()
+	trie, _ := NewSecure(common.Hash{}, db)
+	return trie
+}
+
+func TestSecureDelete(t *testing.T) {
+	trie := newEmptySecure()
+	vals := []struct{ k, v string }{
+		{"do", "verb"},
+		{"ether", "wookiedoo"},
+		{"horse", "stallion"},
+		{"shaman", "horse"},
+		{"doge", "coin"},
+		{"ether", ""},
+		{"dog", "puppy"},
+		{"shaman", ""},
+	}
+	for _, val := range vals {
+		if val.v != "" {
+			trie.Update([]byte(val.k), []byte(val.v))
+		} else {
+			trie.Delete([]byte(val.k))
+		}
+	}
+	hash := trie.Hash()
+	exp := common.HexToHash("29b235a58c3c25ab83010c327d5932bcf05324b7d6b1185e650798034783ca9d")
+	if hash != exp {
+		t.Errorf("expected %x got %x", exp, hash)
+	}
+}
+
+func TestSecureGetKey(t *testing.T) {
+	trie := newEmptySecure()
+	trie.Update([]byte("foo"), []byte("bar"))
+
+	key := []byte("foo")
+	value := []byte("bar")
+	seckey := crypto.Sha3(key)
+
+	if !bytes.Equal(trie.Get(key), value) {
+		t.Errorf("Get did not return bar")
+	}
+	if k := trie.GetKey(seckey); !bytes.Equal(k, key) {
+		t.Errorf("GetKey returned %q, want %q", k, key)
+	}
+}