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// 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 state
import (
"bytes"
"math/big"
"testing"
checker "gopkg.in/check.v1"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/ethdb"
)
type StateSuite struct {
state *StateDB
}
var _ = checker.Suite(&StateSuite{})
var toAddr = common.BytesToAddress
func (s *StateSuite) TestDump(c *checker.C) {
return
// generate a few entries
obj1 := s.state.GetOrNewStateObject(toAddr([]byte{0x01}))
obj1.AddBalance(big.NewInt(22))
obj2 := s.state.GetOrNewStateObject(toAddr([]byte{0x01, 0x02}))
obj2.SetCode([]byte{3, 3, 3, 3, 3, 3, 3})
obj3 := s.state.GetOrNewStateObject(toAddr([]byte{0x02}))
obj3.SetBalance(big.NewInt(44))
// write some of them to the trie
s.state.UpdateStateObject(obj1)
s.state.UpdateStateObject(obj2)
// check that dump contains the state objects that are in trie
got := string(s.state.Dump())
want := `{
"root": "6e277ae8357d013e50f74eedb66a991f6922f93ae03714de58b3d0c5e9eee53f",
"accounts": {
"1468288056310c82aa4c01a7e12a10f8111a0560e72b700555479031b86c357d": {
"balance": "22",
"nonce": 0,
"root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
"codeHash": "c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
"storage": {}
},
"a17eacbc25cda025e81db9c5c62868822c73ce097cee2a63e33a2e41268358a1": {
"balance": "0",
"nonce": 0,
"root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
"codeHash": "87874902497a5bb968da31a2998d8f22e949d1ef6214bcdedd8bae24cca4b9e3",
"storage": {}
}
}
}`
if got != want {
c.Errorf("dump mismatch:\ngot: %s\nwant: %s\n", got, want)
}
}
func (s *StateSuite) SetUpTest(c *checker.C) {
db, _ := ethdb.NewMemDatabase()
s.state, _ = New(common.Hash{}, db)
}
func TestNull(t *testing.T) {
db, _ := ethdb.NewMemDatabase()
state, _ := New(common.Hash{}, db)
address := common.HexToAddress("0x823140710bf13990e4500136726d8b55")
state.CreateAccount(address)
//value := common.FromHex("0x823140710bf13990e4500136726d8b55")
var value common.Hash
state.SetState(address, common.Hash{}, value)
state.Commit()
value = state.GetState(address, common.Hash{})
if !common.EmptyHash(value) {
t.Errorf("expected empty hash. got %x", value)
}
}
func (s *StateSuite) TestSnapshot(c *checker.C) {
stateobjaddr := toAddr([]byte("aa"))
var storageaddr common.Hash
data1 := common.BytesToHash([]byte{42})
data2 := common.BytesToHash([]byte{43})
// set inital state object value
s.state.SetState(stateobjaddr, storageaddr, data1)
// get snapshot of current state
snapshot := s.state.Copy()
// set new state object value
s.state.SetState(stateobjaddr, storageaddr, data2)
// restore snapshot
s.state.Set(snapshot)
// get state storage value
res := s.state.GetState(stateobjaddr, storageaddr)
c.Assert(data1, checker.DeepEquals, res)
}
// use testing instead of checker because checker does not support
// printing/logging in tests (-check.vv does not work)
func TestSnapshot2(t *testing.T) {
db, _ := ethdb.NewMemDatabase()
state, _ := New(common.Hash{}, db)
stateobjaddr0 := toAddr([]byte("so0"))
stateobjaddr1 := toAddr([]byte("so1"))
var storageaddr common.Hash
data0 := common.BytesToHash([]byte{17})
data1 := common.BytesToHash([]byte{18})
state.SetState(stateobjaddr0, storageaddr, data0)
state.SetState(stateobjaddr1, storageaddr, data1)
// db, trie are already non-empty values
so0 := state.GetStateObject(stateobjaddr0)
so0.balance = big.NewInt(42)
so0.nonce = 43
so0.code = []byte{'c', 'a', 'f', 'e'}
so0.codeHash = so0.CodeHash()
so0.remove = true
so0.deleted = false
so0.dirty = false
state.SetStateObject(so0)
// and one with deleted == true
so1 := state.GetStateObject(stateobjaddr1)
so1.balance = big.NewInt(52)
so1.nonce = 53
so1.code = []byte{'c', 'a', 'f', 'e', '2'}
so1.codeHash = so1.CodeHash()
so1.remove = true
so1.deleted = true
so1.dirty = true
state.SetStateObject(so1)
so1 = state.GetStateObject(stateobjaddr1)
if so1 != nil {
t.Fatalf("deleted object not nil when getting")
}
snapshot := state.Copy()
state.Set(snapshot)
so0Restored := state.GetStateObject(stateobjaddr0)
so1Restored := state.GetStateObject(stateobjaddr1)
// non-deleted is equal (restored)
compareStateObjects(so0Restored, so0, t)
// deleted should be nil, both before and after restore of state copy
if so1Restored != nil {
t.Fatalf("deleted object not nil after restoring snapshot")
}
}
func compareStateObjects(so0, so1 *StateObject, t *testing.T) {
if so0.address != so1.address {
t.Fatalf("Address mismatch: have %v, want %v", so0.address, so1.address)
}
if so0.balance.Cmp(so1.balance) != 0 {
t.Fatalf("Balance mismatch: have %v, want %v", so0.balance, so1.balance)
}
if so0.nonce != so1.nonce {
t.Fatalf("Nonce mismatch: have %v, want %v", so0.nonce, so1.nonce)
}
if !bytes.Equal(so0.codeHash, so1.codeHash) {
t.Fatalf("CodeHash mismatch: have %v, want %v", so0.codeHash, so1.codeHash)
}
if !bytes.Equal(so0.code, so1.code) {
t.Fatalf("Code mismatch: have %v, want %v", so0.code, so1.code)
}
if !bytes.Equal(so0.initCode, so1.initCode) {
t.Fatalf("InitCode mismatch: have %v, want %v", so0.initCode, so1.initCode)
}
for k, v := range so1.storage {
if so0.storage[k] != v {
t.Fatalf("Storage key %s mismatch: have %v, want %v", k, so0.storage[k], v)
}
}
for k, v := range so0.storage {
if so1.storage[k] != v {
t.Fatalf("Storage key %s mismatch: have %v, want none.", k, v)
}
}
if so0.remove != so1.remove {
t.Fatalf("Remove mismatch: have %v, want %v", so0.remove, so1.remove)
}
if so0.deleted != so1.deleted {
t.Fatalf("Deleted mismatch: have %v, want %v", so0.deleted, so1.deleted)
}
if so0.dirty != so1.dirty {
t.Fatalf("Dirty mismatch: have %v, want %v", so0.dirty, so1.dirty)
}
}
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