e376d2fb31
This PR implements the EVM state transition tool, which is intended to be the replacement for our retesteth client implementation. Documentation is present in the cmd/evm/README.md file. Co-authored-by: Felix Lange <fjl@twurst.com>
251 lines
8.3 KiB
Go
251 lines
8.3 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 state
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import (
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"bytes"
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"math/big"
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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/crypto"
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"github.com/ethereum/go-ethereum/ethdb"
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)
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var toAddr = common.BytesToAddress
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type stateTest struct {
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db ethdb.Database
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state *StateDB
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}
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func newStateTest() *stateTest {
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db := rawdb.NewMemoryDatabase()
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sdb, _ := New(common.Hash{}, NewDatabase(db), nil)
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return &stateTest{db: db, state: sdb}
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}
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func TestDump(t *testing.T) {
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s := newStateTest()
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// generate a few entries
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obj1 := s.state.GetOrNewStateObject(toAddr([]byte{0x01}))
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obj1.AddBalance(big.NewInt(22))
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obj2 := s.state.GetOrNewStateObject(toAddr([]byte{0x01, 0x02}))
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obj2.SetCode(crypto.Keccak256Hash([]byte{3, 3, 3, 3, 3, 3, 3}), []byte{3, 3, 3, 3, 3, 3, 3})
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obj3 := s.state.GetOrNewStateObject(toAddr([]byte{0x02}))
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obj3.SetBalance(big.NewInt(44))
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// write some of them to the trie
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s.state.updateStateObject(obj1)
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s.state.updateStateObject(obj2)
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s.state.Commit(false)
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// check that DumpToCollector contains the state objects that are in trie
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got := string(s.state.Dump(false, false, true))
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want := `{
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"root": "71edff0130dd2385947095001c73d9e28d862fc286fca2b922ca6f6f3cddfdd2",
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"accounts": {
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"0x0000000000000000000000000000000000000001": {
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"balance": "22",
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"nonce": 0,
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"root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
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"codeHash": "c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470"
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},
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"0x0000000000000000000000000000000000000002": {
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"balance": "44",
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"nonce": 0,
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"root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
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"codeHash": "c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470"
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},
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"0x0000000000000000000000000000000000000102": {
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"balance": "0",
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"nonce": 0,
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"root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
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"codeHash": "87874902497a5bb968da31a2998d8f22e949d1ef6214bcdedd8bae24cca4b9e3",
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"code": "03030303030303"
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}
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}
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}`
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if got != want {
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t.Errorf("DumpToCollector mismatch:\ngot: %s\nwant: %s\n", got, want)
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}
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}
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func TestNull(t *testing.T) {
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s := newStateTest()
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address := common.HexToAddress("0x823140710bf13990e4500136726d8b55")
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s.state.CreateAccount(address)
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//value := common.FromHex("0x823140710bf13990e4500136726d8b55")
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var value common.Hash
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s.state.SetState(address, common.Hash{}, value)
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s.state.Commit(false)
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if value := s.state.GetState(address, common.Hash{}); value != (common.Hash{}) {
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t.Errorf("expected empty current value, got %x", value)
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}
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if value := s.state.GetCommittedState(address, common.Hash{}); value != (common.Hash{}) {
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t.Errorf("expected empty committed value, got %x", value)
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}
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}
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func TestSnapshot(t *testing.T) {
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stateobjaddr := toAddr([]byte("aa"))
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var storageaddr common.Hash
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data1 := common.BytesToHash([]byte{42})
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data2 := common.BytesToHash([]byte{43})
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s := newStateTest()
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// snapshot the genesis state
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genesis := s.state.Snapshot()
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// set initial state object value
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s.state.SetState(stateobjaddr, storageaddr, data1)
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snapshot := s.state.Snapshot()
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// set a new state object value, revert it and ensure correct content
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s.state.SetState(stateobjaddr, storageaddr, data2)
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s.state.RevertToSnapshot(snapshot)
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if v := s.state.GetState(stateobjaddr, storageaddr); v != data1 {
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t.Errorf("wrong storage value %v, want %v", v, data1)
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}
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if v := s.state.GetCommittedState(stateobjaddr, storageaddr); v != (common.Hash{}) {
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t.Errorf("wrong committed storage value %v, want %v", v, common.Hash{})
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}
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// revert up to the genesis state and ensure correct content
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s.state.RevertToSnapshot(genesis)
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if v := s.state.GetState(stateobjaddr, storageaddr); v != (common.Hash{}) {
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t.Errorf("wrong storage value %v, want %v", v, common.Hash{})
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}
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if v := s.state.GetCommittedState(stateobjaddr, storageaddr); v != (common.Hash{}) {
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t.Errorf("wrong committed storage value %v, want %v", v, common.Hash{})
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}
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}
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func TestSnapshotEmpty(t *testing.T) {
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s := newStateTest()
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s.state.RevertToSnapshot(s.state.Snapshot())
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}
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func TestSnapshot2(t *testing.T) {
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state, _ := New(common.Hash{}, NewDatabase(rawdb.NewMemoryDatabase()), nil)
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stateobjaddr0 := toAddr([]byte("so0"))
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stateobjaddr1 := toAddr([]byte("so1"))
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var storageaddr common.Hash
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data0 := common.BytesToHash([]byte{17})
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data1 := common.BytesToHash([]byte{18})
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state.SetState(stateobjaddr0, storageaddr, data0)
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state.SetState(stateobjaddr1, storageaddr, data1)
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// db, trie are already non-empty values
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so0 := state.getStateObject(stateobjaddr0)
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so0.SetBalance(big.NewInt(42))
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so0.SetNonce(43)
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so0.SetCode(crypto.Keccak256Hash([]byte{'c', 'a', 'f', 'e'}), []byte{'c', 'a', 'f', 'e'})
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so0.suicided = false
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so0.deleted = false
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state.setStateObject(so0)
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root, _ := state.Commit(false)
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state.Reset(root)
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// and one with deleted == true
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so1 := state.getStateObject(stateobjaddr1)
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so1.SetBalance(big.NewInt(52))
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so1.SetNonce(53)
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so1.SetCode(crypto.Keccak256Hash([]byte{'c', 'a', 'f', 'e', '2'}), []byte{'c', 'a', 'f', 'e', '2'})
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so1.suicided = true
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so1.deleted = true
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state.setStateObject(so1)
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so1 = state.getStateObject(stateobjaddr1)
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if so1 != nil {
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t.Fatalf("deleted object not nil when getting")
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}
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snapshot := state.Snapshot()
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state.RevertToSnapshot(snapshot)
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so0Restored := state.getStateObject(stateobjaddr0)
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// Update lazily-loaded values before comparing.
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so0Restored.GetState(state.db, storageaddr)
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so0Restored.Code(state.db)
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// non-deleted is equal (restored)
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compareStateObjects(so0Restored, so0, t)
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// deleted should be nil, both before and after restore of state copy
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so1Restored := state.getStateObject(stateobjaddr1)
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if so1Restored != nil {
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t.Fatalf("deleted object not nil after restoring snapshot: %+v", so1Restored)
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}
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}
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func compareStateObjects(so0, so1 *stateObject, t *testing.T) {
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if so0.Address() != so1.Address() {
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t.Fatalf("Address mismatch: have %v, want %v", so0.address, so1.address)
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}
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if so0.Balance().Cmp(so1.Balance()) != 0 {
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t.Fatalf("Balance mismatch: have %v, want %v", so0.Balance(), so1.Balance())
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}
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if so0.Nonce() != so1.Nonce() {
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t.Fatalf("Nonce mismatch: have %v, want %v", so0.Nonce(), so1.Nonce())
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}
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if so0.data.Root != so1.data.Root {
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t.Errorf("Root mismatch: have %x, want %x", so0.data.Root[:], so1.data.Root[:])
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}
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if !bytes.Equal(so0.CodeHash(), so1.CodeHash()) {
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t.Fatalf("CodeHash mismatch: have %v, want %v", so0.CodeHash(), so1.CodeHash())
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}
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if !bytes.Equal(so0.code, so1.code) {
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t.Fatalf("Code mismatch: have %v, want %v", so0.code, so1.code)
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}
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if len(so1.dirtyStorage) != len(so0.dirtyStorage) {
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t.Errorf("Dirty storage size mismatch: have %d, want %d", len(so1.dirtyStorage), len(so0.dirtyStorage))
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}
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for k, v := range so1.dirtyStorage {
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if so0.dirtyStorage[k] != v {
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t.Errorf("Dirty storage key %x mismatch: have %v, want %v", k, so0.dirtyStorage[k], v)
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}
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}
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for k, v := range so0.dirtyStorage {
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if so1.dirtyStorage[k] != v {
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t.Errorf("Dirty storage key %x mismatch: have %v, want none.", k, v)
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}
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}
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if len(so1.originStorage) != len(so0.originStorage) {
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t.Errorf("Origin storage size mismatch: have %d, want %d", len(so1.originStorage), len(so0.originStorage))
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}
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for k, v := range so1.originStorage {
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if so0.originStorage[k] != v {
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t.Errorf("Origin storage key %x mismatch: have %v, want %v", k, so0.originStorage[k], v)
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}
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}
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for k, v := range so0.originStorage {
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if so1.originStorage[k] != v {
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t.Errorf("Origin storage key %x mismatch: have %v, want none.", k, v)
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}
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}
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}
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