174 lines
5.4 KiB
Go
174 lines
5.4 KiB
Go
// Copyright 2014 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package trie_test
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import (
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"fmt"
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"math/big"
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"math/rand"
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"testing"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/rawdb"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/rlp"
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geth_trie "github.com/ethereum/go-ethereum/trie"
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"github.com/cerc-io/ipld-eth-statedb/trie_by_cid/trie"
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)
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func TestTrieEmpty(t *testing.T) {
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trie := trie.NewEmpty(trie.NewDatabase(rawdb.NewMemoryDatabase()))
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res := trie.Hash()
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exp := types.EmptyRootHash
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if res != exp {
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t.Errorf("expected %x got %x", exp, res)
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}
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}
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func TestTrieMissingRoot(t *testing.T) {
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root := common.HexToHash("0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33")
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tr, err := newStateTrie(root, trie.NewDatabase(rawdb.NewMemoryDatabase()))
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if tr != nil {
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t.Error("New returned non-nil trie for invalid root")
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}
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if _, ok := err.(*trie.MissingNodeError); !ok {
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t.Errorf("New returned wrong error: %v", err)
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}
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}
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func TestTrieBasic(t *testing.T) {
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edb := rawdb.NewMemoryDatabase()
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db := geth_trie.NewDatabase(edb)
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origtrie := geth_trie.NewEmpty(db)
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origtrie.Update([]byte("foo"), packValue(842))
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expected := commitTrie(t, db, origtrie)
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tr := indexTrie(t, edb, expected)
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got := tr.Hash()
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if expected != got {
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t.Errorf("got %x expected %x", got, expected)
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}
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checkValue(t, tr, []byte("foo"))
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}
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func TestTrieTiny(t *testing.T) {
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// Create a realistic account trie to hash
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_, accounts := makeAccounts(5)
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edb := rawdb.NewMemoryDatabase()
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db := geth_trie.NewDatabase(edb)
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origtrie := geth_trie.NewEmpty(db)
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type testCase struct {
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key, account []byte
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root common.Hash
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}
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cases := []testCase{
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{
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common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000001337"),
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accounts[3],
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common.HexToHash("8c6a85a4d9fda98feff88450299e574e5378e32391f75a055d470ac0653f1005"),
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}, {
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common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000001338"),
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accounts[4],
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common.HexToHash("ec63b967e98a5720e7f720482151963982890d82c9093c0d486b7eb8883a66b1"),
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}, {
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common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000001339"),
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accounts[4],
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common.HexToHash("0608c1d1dc3905fa22204c7a0e43644831c3b6d3def0f274be623a948197e64a"),
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},
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}
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for i, tc := range cases {
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t.Run(fmt.Sprintf("case %d", i), func(t *testing.T) {
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origtrie.Update(tc.key, tc.account)
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trie := indexTrie(t, edb, commitTrie(t, db, origtrie))
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if exp, root := tc.root, trie.Hash(); exp != root {
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t.Errorf("got %x, exp %x", root, exp)
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}
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checkValue(t, trie, tc.key)
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})
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}
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}
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func TestTrieMedium(t *testing.T) {
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// Create a realistic account trie to hash
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addresses, accounts := makeAccounts(1000)
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edb := rawdb.NewMemoryDatabase()
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db := geth_trie.NewDatabase(edb)
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origtrie := geth_trie.NewEmpty(db)
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var keys [][]byte
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for i := 0; i < len(addresses); i++ {
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key := crypto.Keccak256(addresses[i][:])
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if i%50 == 0 {
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keys = append(keys, key)
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}
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origtrie.Update(key, accounts[i])
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}
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tr := indexTrie(t, edb, commitTrie(t, db, origtrie))
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root := tr.Hash()
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exp := common.HexToHash("72f9d3f3fe1e1dd7b8936442e7642aef76371472d94319900790053c493f3fe6")
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if exp != root {
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t.Errorf("got %x, exp %x", root, exp)
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}
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for _, key := range keys {
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checkValue(t, tr, key)
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}
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}
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// Make deterministically random accounts
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func makeAccounts(size int) (addresses [][20]byte, accounts [][]byte) {
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random := rand.New(rand.NewSource(0))
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addresses = make([][20]byte, size)
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for i := 0; i < len(addresses); i++ {
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data := make([]byte, 20)
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random.Read(data)
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copy(addresses[i][:], data)
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}
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accounts = make([][]byte, len(addresses))
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for i := 0; i < len(accounts); i++ {
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var (
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nonce = uint64(random.Int63())
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root = types.EmptyRootHash
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code = crypto.Keccak256(nil)
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)
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// The big.Rand function is not deterministic with regards to 64 vs 32 bit systems,
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// and will consume different amount of data from the rand source.
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// balance = new(big.Int).Rand(random, new(big.Int).Exp(common.Big2, common.Big256, nil))
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// Therefore, we instead just read via byte buffer
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numBytes := random.Uint32() % 33 // [0, 32] bytes
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balanceBytes := make([]byte, numBytes)
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random.Read(balanceBytes)
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balance := new(big.Int).SetBytes(balanceBytes)
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acct := &types.StateAccount{Nonce: nonce, Balance: balance, Root: root, CodeHash: code}
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data, _ := rlp.EncodeToBytes(acct)
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accounts[i] = data
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}
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return addresses, accounts
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}
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func checkValue(t *testing.T, tr *trie.Trie, key []byte) {
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val, err := tr.TryGet(key)
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if err != nil {
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t.Fatalf("error getting node: %s", err)
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}
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if len(val) == 0 {
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t.Errorf("failed to get value for %x", key)
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}
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}
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