121 lines
4.2 KiB
Go
121 lines
4.2 KiB
Go
// Copyright 2016 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/ethdb"
|
|
)
|
|
|
|
// Tests that updating a state trie does not leak any database writes prior to
|
|
// actually committing the state.
|
|
func TestUpdateLeaks(t *testing.T) {
|
|
// Create an empty state database
|
|
db, _ := ethdb.NewMemDatabase()
|
|
state, _ := New(common.Hash{}, db)
|
|
|
|
// Update it with some accounts
|
|
for i := byte(0); i < 255; i++ {
|
|
obj := state.GetOrNewStateObject(common.BytesToAddress([]byte{i}))
|
|
obj.AddBalance(big.NewInt(int64(11 * i)))
|
|
obj.SetNonce(uint64(42 * i))
|
|
if i%2 == 0 {
|
|
obj.SetState(common.BytesToHash([]byte{i, i, i}), common.BytesToHash([]byte{i, i, i, i}))
|
|
}
|
|
if i%3 == 0 {
|
|
obj.SetCode([]byte{i, i, i, i, i})
|
|
}
|
|
state.UpdateStateObject(obj)
|
|
}
|
|
// Ensure that no data was leaked into the database
|
|
for _, key := range db.Keys() {
|
|
value, _ := db.Get(key)
|
|
t.Errorf("State leaked into database: %x -> %x", key, value)
|
|
}
|
|
}
|
|
|
|
// Tests that no intermediate state of an object is stored into the database,
|
|
// only the one right before the commit.
|
|
func TestIntermediateLeaks(t *testing.T) {
|
|
// Create two state databases, one transitioning to the final state, the other final from the beginning
|
|
transDb, _ := ethdb.NewMemDatabase()
|
|
finalDb, _ := ethdb.NewMemDatabase()
|
|
transState, _ := New(common.Hash{}, transDb)
|
|
finalState, _ := New(common.Hash{}, finalDb)
|
|
|
|
// Update the states with some objects
|
|
for i := byte(0); i < 255; i++ {
|
|
// Create a new state object with some data into the transition database
|
|
obj := transState.GetOrNewStateObject(common.BytesToAddress([]byte{i}))
|
|
obj.SetBalance(big.NewInt(int64(11 * i)))
|
|
obj.SetNonce(uint64(42 * i))
|
|
if i%2 == 0 {
|
|
obj.SetState(common.BytesToHash([]byte{i, i, i, 0}), common.BytesToHash([]byte{i, i, i, i, 0}))
|
|
}
|
|
if i%3 == 0 {
|
|
obj.SetCode([]byte{i, i, i, i, i, 0})
|
|
}
|
|
transState.UpdateStateObject(obj)
|
|
|
|
// Overwrite all the data with new values in the transition database
|
|
obj.SetBalance(big.NewInt(int64(11*i + 1)))
|
|
obj.SetNonce(uint64(42*i + 1))
|
|
if i%2 == 0 {
|
|
obj.SetState(common.BytesToHash([]byte{i, i, i, 0}), common.Hash{})
|
|
obj.SetState(common.BytesToHash([]byte{i, i, i, 1}), common.BytesToHash([]byte{i, i, i, i, 1}))
|
|
}
|
|
if i%3 == 0 {
|
|
obj.SetCode([]byte{i, i, i, i, i, 1})
|
|
}
|
|
transState.UpdateStateObject(obj)
|
|
|
|
// Create the final state object directly in the final database
|
|
obj = finalState.GetOrNewStateObject(common.BytesToAddress([]byte{i}))
|
|
obj.SetBalance(big.NewInt(int64(11*i + 1)))
|
|
obj.SetNonce(uint64(42*i + 1))
|
|
if i%2 == 0 {
|
|
obj.SetState(common.BytesToHash([]byte{i, i, i, 1}), common.BytesToHash([]byte{i, i, i, i, 1}))
|
|
}
|
|
if i%3 == 0 {
|
|
obj.SetCode([]byte{i, i, i, i, i, 1})
|
|
}
|
|
finalState.UpdateStateObject(obj)
|
|
}
|
|
if _, err := transState.Commit(); err != nil {
|
|
t.Fatalf("failed to commit transition state: %v", err)
|
|
}
|
|
if _, err := finalState.Commit(); err != nil {
|
|
t.Fatalf("failed to commit final state: %v", err)
|
|
}
|
|
// Cross check the databases to ensure they are the same
|
|
for _, key := range finalDb.Keys() {
|
|
if _, err := transDb.Get(key); err != nil {
|
|
val, _ := finalDb.Get(key)
|
|
t.Errorf("entry missing from the transition database: %x -> %x", key, val)
|
|
}
|
|
}
|
|
for _, key := range transDb.Keys() {
|
|
if _, err := finalDb.Get(key); err != nil {
|
|
val, _ := transDb.Get(key)
|
|
t.Errorf("extra entry in the transition database: %x -> %x", key, val)
|
|
}
|
|
}
|
|
}
|