// Copyright 2014 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"
"fmt"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
)
type Db map[string][]byte
func (self Db) Get(k []byte) ([]byte, error) { return self[string(k)], nil }
func (self Db) Put(k, v []byte) error { self[string(k)] = v; return nil }
// Used for testing
func NewEmpty() *Trie {
return New(nil, make(Db))
}
func NewEmptySecure() *SecureTrie {
return NewSecure(nil, make(Db))
}
func TestEmptyTrie(t *testing.T) {
trie := NewEmpty()
res := trie.Hash()
exp := crypto.Sha3(common.Encode(""))
if !bytes.Equal(res, exp) {
t.Errorf("expected %x got %x", exp, res)
}
}
func TestNull(t *testing.T) {
trie := NewEmpty()
key := make([]byte, 32)
value := common.FromHex("0x823140710bf13990e4500136726d8b55")
trie.Update(key, value)
value = trie.Get(key)
}
func TestInsert(t *testing.T) {
trie := NewEmpty()
trie.UpdateString("doe", "reindeer")
trie.UpdateString("dog", "puppy")
trie.UpdateString("dogglesworth", "cat")
exp := common.Hex2Bytes("8aad789dff2f538bca5d8ea56e8abe10f4c7ba3a5dea95fea4cd6e7c3a1168d3")
root := trie.Hash()
if !bytes.Equal(root, exp) {
t.Errorf("exp %x got %x", exp, root)
}
trie = NewEmpty()
trie.UpdateString("A", "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")
exp = common.Hex2Bytes("d23786fb4a010da3ce639d66d5e904a11dbc02746d1ce25029e53290cabf28ab")
root = trie.Hash()
if !bytes.Equal(root, exp) {
t.Errorf("exp %x got %x", exp, root)
}
}
func TestGet(t *testing.T) {
trie := NewEmpty()
trie.UpdateString("doe", "reindeer")
trie.UpdateString("dog", "puppy")
trie.UpdateString("dogglesworth", "cat")
res := trie.GetString("dog")
if !bytes.Equal(res, []byte("puppy")) {
t.Errorf("expected puppy got %x", res)
}
unknown := trie.GetString("unknown")
if unknown != nil {
t.Errorf("expected nil got %x", unknown)
}
}
func TestDelete(t *testing.T) {
trie := NewEmpty()
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.UpdateString(val.k, val.v)
} else {
trie.DeleteString(val.k)
}
}
hash := trie.Hash()
exp := common.Hex2Bytes("5991bb8c6514148a29db676a14ac506cd2cd5775ace63c30a4fe457715e9ac84")
if !bytes.Equal(hash, exp) {
t.Errorf("expected %x got %x", exp, hash)
}
}
func TestEmptyValues(t *testing.T) {
trie := NewEmpty()
vals := []struct{ k, v string }{
{"do", "verb"},
{"ether", "wookiedoo"},
{"horse", "stallion"},
{"shaman", "horse"},
{"doge", "coin"},
{"ether", ""},
{"dog", "puppy"},
{"shaman", ""},
}
for _, val := range vals {
trie.UpdateString(val.k, val.v)
}
hash := trie.Hash()
exp := common.Hex2Bytes("5991bb8c6514148a29db676a14ac506cd2cd5775ace63c30a4fe457715e9ac84")
if !bytes.Equal(hash, exp) {
t.Errorf("expected %x got %x", exp, hash)
}
}
func TestReplication(t *testing.T) {
trie := NewEmpty()
vals := []struct{ k, v string }{
{"do", "verb"},
{"ether", "wookiedoo"},
{"horse", "stallion"},
{"shaman", "horse"},
{"doge", "coin"},
{"ether", ""},
{"dog", "puppy"},
{"shaman", ""},
{"somethingveryoddindeedthis is", "myothernodedata"},
}
for _, val := range vals {
trie.UpdateString(val.k, val.v)
}
trie.Commit()
trie2 := New(trie.Root(), trie.cache.backend)
if string(trie2.GetString("horse")) != "stallion" {
t.Error("expected to have horse => stallion")
}
hash := trie2.Hash()
exp := trie.Hash()
if !bytes.Equal(hash, exp) {
t.Errorf("root failure. expected %x got %x", exp, hash)
}
}
func TestReset(t *testing.T) {
trie := NewEmpty()
vals := []struct{ k, v string }{
{"do", "verb"},
{"ether", "wookiedoo"},
{"horse", "stallion"},
}
for _, val := range vals {
trie.UpdateString(val.k, val.v)
}
trie.Commit()
before := common.CopyBytes(trie.roothash)
trie.UpdateString("should", "revert")
trie.Hash()
// Should have no effect
trie.Hash()
trie.Hash()
// ###
trie.Reset()
after := common.CopyBytes(trie.roothash)
if !bytes.Equal(before, after) {
t.Errorf("expected roots to be equal. %x - %x", before, after)
}
}
func TestParanoia(t *testing.T) {
t.Skip()
trie := NewEmpty()
vals := []struct{ k, v string }{
{"do", "verb"},
{"ether", "wookiedoo"},
{"horse", "stallion"},
{"shaman", "horse"},
{"doge", "coin"},
{"ether", ""},
{"dog", "puppy"},
{"shaman", ""},
{"somethingveryoddindeedthis is", "myothernodedata"},
}
for _, val := range vals {
trie.UpdateString(val.k, val.v)
}
trie.Commit()
ok, t2 := ParanoiaCheck(trie, trie.cache.backend)
if !ok {
t.Errorf("trie paranoia check failed %x %x", trie.roothash, t2.roothash)
}
}
// Not an actual test
func TestOutput(t *testing.T) {
t.Skip()
base := "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
trie := NewEmpty()
for i := 0; i < 50; i++ {
trie.UpdateString(fmt.Sprintf("%s%d", base, i), "valueeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee")
}
fmt.Println("############################## FULL ################################")
fmt.Println(trie.root)
trie.Commit()
fmt.Println("############################## SMALL ################################")
trie2 := New(trie.roothash, trie.cache.backend)
trie2.GetString(base + "20")
fmt.Println(trie2.root)
}
func BenchmarkGets(b *testing.B) {
trie := NewEmpty()
vals := []struct{ k, v string }{
{"do", "verb"},
{"ether", "wookiedoo"},
{"horse", "stallion"},
{"shaman", "horse"},
{"doge", "coin"},
{"ether", ""},
{"dog", "puppy"},
{"shaman", ""},
{"somethingveryoddindeedthis is", "myothernodedata"},
}
for _, val := range vals {
trie.UpdateString(val.k, val.v)
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
trie.Get([]byte("horse"))
}
}
func BenchmarkUpdate(b *testing.B) {
trie := NewEmpty()
b.ResetTimer()
for i := 0; i < b.N; i++ {
trie.UpdateString(fmt.Sprintf("aaaaaaaaa%d", i), "value")
}
trie.Hash()
}
type kv struct {
k, v []byte
t bool
}
func TestLargeData(t *testing.T) {
trie := NewEmpty()
vals := make(map[string]*kv)
for i := byte(0); i < 255; i++ {
value := &kv{common.LeftPadBytes([]byte{i}, 32), []byte{i}, false}
value2 := &kv{common.LeftPadBytes([]byte{10, i}, 32), []byte{i}, false}
trie.Update(value.k, value.v)
trie.Update(value2.k, value2.v)
vals[string(value.k)] = value
vals[string(value2.k)] = value2
}
it := trie.Iterator()
for it.Next() {
vals[string(it.Key)].t = true
}
var untouched []*kv
for _, value := range vals {
if !value.t {
untouched = append(untouched, value)
}
}
if len(untouched) > 0 {
t.Errorf("Missed %d nodes", len(untouched))
for _, value := range untouched {
t.Error(value)
}
}
}
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.UpdateString(val.k, val.v)
} else {
trie.DeleteString(val.k)
}
}
hash := trie.Hash()
exp := common.Hex2Bytes("29b235a58c3c25ab83010c327d5932bcf05324b7d6b1185e650798034783ca9d")
if !bytes.Equal(hash, exp) {
t.Errorf("expected %x got %x", exp, hash)
}
}
