Official Go implementation of the Ethereum protocol
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go-ethereum/core/state/trie_prefetcher_test.go

64 lines
2.5 KiB

// Copyright 2021 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 state
import (
"math/big"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/tracing"
"github.com/ethereum/go-ethereum/core/types"
"github.com/holiman/uint256"
)
func filledStateDB() *StateDB {
state, _ := New(types.EmptyRootHash, NewDatabase(rawdb.NewMemoryDatabase()), nil)
// Create an account and check if the retrieved balance is correct
addr := common.HexToAddress("0xaffeaffeaffeaffeaffeaffeaffeaffeaffeaffe")
skey := common.HexToHash("aaa")
sval := common.HexToHash("bbb")
state.SetBalance(addr, uint256.NewInt(42), tracing.BalanceChangeUnspecified) // Change the account trie
state.SetCode(addr, []byte("hello")) // Change an external metadata
state.SetState(addr, skey, sval) // Change the storage trie
for i := 0; i < 100; i++ {
sk := common.BigToHash(big.NewInt(int64(i)))
state.SetState(addr, sk, sk) // Change the storage trie
}
return state
}
func TestUseAfterTerminate(t *testing.T) {
db := filledStateDB()
prefetcher := newTriePrefetcher(db.db, db.originalRoot, "", true)
skey := common.HexToHash("aaa")
if err := prefetcher.prefetch(common.Hash{}, db.originalRoot, common.Address{}, [][]byte{skey.Bytes()}, false); err != nil {
t.Errorf("Prefetch failed before terminate: %v", err)
}
prefetcher.terminate(false)
if err := prefetcher.prefetch(common.Hash{}, db.originalRoot, common.Address{}, [][]byte{skey.Bytes()}, false); err == nil {
t.Errorf("Prefetch succeeded after terminate: %v", err)
}
if tr := prefetcher.trie(common.Hash{}, db.originalRoot); tr == nil {
t.Errorf("Prefetcher returned nil trie after terminate")
}
}