225 lines
6.8 KiB
Go
225 lines
6.8 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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checker "gopkg.in/check.v1"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/ethdb"
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)
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type StateSuite struct {
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state *StateDB
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}
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var _ = checker.Suite(&StateSuite{})
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var toAddr = common.BytesToAddress
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func (s *StateSuite) TestDump(c *checker.C) {
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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([]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()
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// check that dump contains the state objects that are in trie
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got := string(s.state.Dump())
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want := `{
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"root": "71edff0130dd2385947095001c73d9e28d862fc286fca2b922ca6f6f3cddfdd2",
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"accounts": {
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"0000000000000000000000000000000000000001": {
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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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"code": "",
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"storage": {}
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},
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"0000000000000000000000000000000000000002": {
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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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"code": "",
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"storage": {}
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},
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"0000000000000000000000000000000000000102": {
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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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"storage": {}
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}
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}
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}`
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if got != want {
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c.Errorf("dump mismatch:\ngot: %s\nwant: %s\n", got, want)
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}
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}
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func (s *StateSuite) SetUpTest(c *checker.C) {
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db, _ := ethdb.NewMemDatabase()
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s.state, _ = New(common.Hash{}, db)
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}
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func TestNull(t *testing.T) {
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db, _ := ethdb.NewMemDatabase()
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state, _ := New(common.Hash{}, db)
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address := common.HexToAddress("0x823140710bf13990e4500136726d8b55")
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state.CreateAccount(address)
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//value := common.FromHex("0x823140710bf13990e4500136726d8b55")
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var value common.Hash
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state.SetState(address, common.Hash{}, value)
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state.Commit()
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value = state.GetState(address, common.Hash{})
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if !common.EmptyHash(value) {
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t.Errorf("expected empty hash. got %x", value)
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}
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}
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func (s *StateSuite) TestSnapshot(c *checker.C) {
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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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// set initial state object value
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s.state.SetState(stateobjaddr, storageaddr, data1)
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// get snapshot of current state
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snapshot := s.state.Copy()
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// set new state object value
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s.state.SetState(stateobjaddr, storageaddr, data2)
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// restore snapshot
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s.state.Set(snapshot)
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// get state storage value
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res := s.state.GetState(stateobjaddr, storageaddr)
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c.Assert(data1, checker.DeepEquals, res)
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}
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// use testing instead of checker because checker does not support
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// printing/logging in tests (-check.vv does not work)
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func TestSnapshot2(t *testing.T) {
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db, _ := ethdb.NewMemDatabase()
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state, _ := New(common.Hash{}, db)
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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.balance = big.NewInt(42)
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so0.nonce = 43
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so0.SetCode([]byte{'c', 'a', 'f', 'e'})
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so0.remove = false
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so0.deleted = false
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so0.dirty = true
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state.SetStateObject(so0)
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state.Commit()
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// and one with deleted == true
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so1 := state.GetStateObject(stateobjaddr1)
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so1.balance = big.NewInt(52)
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so1.nonce = 53
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so1.SetCode([]byte{'c', 'a', 'f', 'e', '2'})
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so1.remove = true
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so1.deleted = true
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so1.dirty = 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.Copy()
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state.Set(snapshot)
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so0Restored := state.GetStateObject(stateobjaddr0)
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so0Restored.GetState(storageaddr)
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so1Restored := state.GetStateObject(stateobjaddr1)
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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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if so1Restored != nil {
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t.Fatalf("deleted object not nil after restoring snapshot")
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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 !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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for k, v := range so1.storage {
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if so0.storage[k] != v {
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t.Fatalf("Storage key %s mismatch: have %v, want %v", k, so0.storage[k], v)
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}
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}
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for k, v := range so0.storage {
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if so1.storage[k] != v {
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t.Fatalf("Storage key %s mismatch: have %v, want none.", k, v)
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}
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}
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if so0.remove != so1.remove {
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t.Fatalf("Remove mismatch: have %v, want %v", so0.remove, so1.remove)
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}
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if so0.deleted != so1.deleted {
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t.Fatalf("Deleted mismatch: have %v, want %v", so0.deleted, so1.deleted)
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}
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if so0.dirty != so1.dirty {
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t.Fatalf("Dirty mismatch: have %v, want %v", so0.dirty, so1.dirty)
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}
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}
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