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// Copyright 2015 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 light
import (
"bytes"
"math/big"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/trie"
"golang.org/x/net/context"
)
type testOdr struct {
OdrBackend
sdb, ldb ethdb.Database
}
func (odr *testOdr) Database() ethdb.Database {
return odr.ldb
}
func (odr *testOdr) Retrieve(ctx context.Context, req OdrRequest) error {
switch req := req.(type) {
case *TrieRequest:
t, _ := trie.New(req.root, odr.sdb)
req.proof = t.Prove(req.key)
case *NodeDataRequest:
req.data, _ = odr.sdb.Get(req.hash[:])
}
req.StoreResult(odr.ldb)
return nil
}
func makeTestState() (common.Hash, ethdb.Database) {
sdb, _ := ethdb.NewMemDatabase()
st, _ := state.New(common.Hash{}, sdb)
for i := byte(0); i < 100; i++ {
so := st.GetOrNewStateObject(common.Address{i})
for j := byte(0); j < 100; j++ {
val := common.Hash{i, j}
so.SetState(common.Hash{j}, val)
so.SetNonce(100)
}
so.AddBalance(big.NewInt(int64(i)))
so.SetCode([]byte{i, i, i})
so.UpdateRoot(sdb)
st.UpdateStateObject(so)
}
root, _ := st.Commit()
return root, sdb
}
func TestLightStateOdr(t *testing.T) {
root, sdb := makeTestState()
ldb, _ := ethdb.NewMemDatabase()
odr := &testOdr{sdb: sdb, ldb: ldb}
ls := NewLightState(root, odr)
ctx := context.Background()
for i := byte(0); i < 100; i++ {
addr := common.Address{i}
err := ls.AddBalance(ctx, addr, big.NewInt(1000))
if err != nil {
t.Fatalf("Error adding balance to acc[%d]: %v", i, err)
}
err = ls.SetState(ctx, addr, common.Hash{100}, common.Hash{i, 100})
if err != nil {
t.Fatalf("Error setting storage of acc[%d]: %v", i, err)
}
}
addr := common.Address{100}
_, err := ls.CreateStateObject(ctx, addr)
if err != nil {
t.Fatalf("Error creating state object: %v", err)
}
err = ls.SetCode(ctx, addr, []byte{100, 100, 100})
if err != nil {
t.Fatalf("Error setting code: %v", err)
}
err = ls.AddBalance(ctx, addr, big.NewInt(1100))
if err != nil {
t.Fatalf("Error adding balance to acc[100]: %v", err)
}
for j := byte(0); j < 101; j++ {
err = ls.SetState(ctx, addr, common.Hash{j}, common.Hash{100, j})
if err != nil {
t.Fatalf("Error setting storage of acc[100]: %v", err)
}
}
err = ls.SetNonce(ctx, addr, 100)
if err != nil {
t.Fatalf("Error setting nonce for acc[100]: %v", err)
}
for i := byte(0); i < 101; i++ {
addr := common.Address{i}
bal, err := ls.GetBalance(ctx, addr)
if err != nil {
t.Fatalf("Error getting balance of acc[%d]: %v", i, err)
}
if bal.Int64() != int64(i)+1000 {
t.Fatalf("Incorrect balance at acc[%d]: expected %v, got %v", i, int64(i)+1000, bal.Int64())
}
nonce, err := ls.GetNonce(ctx, addr)
if err != nil {
t.Fatalf("Error getting nonce of acc[%d]: %v", i, err)
}
if nonce != 100 {
t.Fatalf("Incorrect nonce at acc[%d]: expected %v, got %v", i, 100, nonce)
}
code, err := ls.GetCode(ctx, addr)
exp := []byte{i, i, i}
if err != nil {
t.Fatalf("Error getting code of acc[%d]: %v", i, err)
}
if !bytes.Equal(code, exp) {
t.Fatalf("Incorrect code at acc[%d]: expected %v, got %v", i, exp, code)
}
for j := byte(0); j < 101; j++ {
exp := common.Hash{i, j}
val, err := ls.GetState(ctx, addr, common.Hash{j})
if err != nil {
t.Fatalf("Error retrieving acc[%d].storage[%d]: %v", i, j, err)
}
if val != exp {
t.Fatalf("Retrieved wrong value from acc[%d].storage[%d]: expected %04x, got %04x", i, j, exp, val)
}
}
}
}
func TestLightStateSetCopy(t *testing.T) {
root, sdb := makeTestState()
ldb, _ := ethdb.NewMemDatabase()
odr := &testOdr{sdb: sdb, ldb: ldb}
ls := NewLightState(root, odr)
ctx := context.Background()
for i := byte(0); i < 100; i++ {
addr := common.Address{i}
err := ls.AddBalance(ctx, addr, big.NewInt(1000))
if err != nil {
t.Fatalf("Error adding balance to acc[%d]: %v", i, err)
}
err = ls.SetState(ctx, addr, common.Hash{100}, common.Hash{i, 100})
if err != nil {
t.Fatalf("Error setting storage of acc[%d]: %v", i, err)
}
}
ls2 := ls.Copy()
for i := byte(0); i < 100; i++ {
addr := common.Address{i}
err := ls2.AddBalance(ctx, addr, big.NewInt(1000))
if err != nil {
t.Fatalf("Error adding balance to acc[%d]: %v", i, err)
}
err = ls2.SetState(ctx, addr, common.Hash{100}, common.Hash{i, 200})
if err != nil {
t.Fatalf("Error setting storage of acc[%d]: %v", i, err)
}
}
lsx := ls.Copy()
ls.Set(ls2)
ls2.Set(lsx)
for i := byte(0); i < 100; i++ {
addr := common.Address{i}
// check balance in ls
bal, err := ls.GetBalance(ctx, addr)
if err != nil {
t.Fatalf("Error getting balance to acc[%d]: %v", i, err)
}
if bal.Int64() != int64(i)+2000 {
t.Fatalf("Incorrect balance at ls.acc[%d]: expected %v, got %v", i, int64(i)+1000, bal.Int64())
}
// check balance in ls2
bal, err = ls2.GetBalance(ctx, addr)
if err != nil {
t.Fatalf("Error getting balance to acc[%d]: %v", i, err)
}
if bal.Int64() != int64(i)+1000 {
t.Fatalf("Incorrect balance at ls.acc[%d]: expected %v, got %v", i, int64(i)+1000, bal.Int64())
}
// check storage in ls
exp := common.Hash{i, 200}
val, err := ls.GetState(ctx, addr, common.Hash{100})
if err != nil {
t.Fatalf("Error retrieving acc[%d].storage[100]: %v", i, err)
}
if val != exp {
t.Fatalf("Retrieved wrong value from acc[%d].storage[100]: expected %04x, got %04x", i, exp, val)
}
// check storage in ls2
exp = common.Hash{i, 100}
val, err = ls2.GetState(ctx, addr, common.Hash{100})
if err != nil {
t.Fatalf("Error retrieving acc[%d].storage[100]: %v", i, err)
}
if val != exp {
t.Fatalf("Retrieved wrong value from acc[%d].storage[100]: expected %04x, got %04x", i, exp, val)
}
}
}
func TestLightStateDelete(t *testing.T) {
root, sdb := makeTestState()
ldb, _ := ethdb.NewMemDatabase()
odr := &testOdr{sdb: sdb, ldb: ldb}
ls := NewLightState(root, odr)
ctx := context.Background()
addr := common.Address{42}
b, err := ls.HasAccount(ctx, addr)
if err != nil {
t.Fatalf("HasAccount error: %v", err)
}
if !b {
t.Fatalf("HasAccount returned false, expected true")
}
b, err = ls.IsDeleted(ctx, addr)
if err != nil {
t.Fatalf("IsDeleted error: %v", err)
}
if b {
t.Fatalf("IsDeleted returned true, expected false")
}
ls.Delete(ctx, addr)
b, err = ls.IsDeleted(ctx, addr)
if err != nil {
t.Fatalf("IsDeleted error: %v", err)
}
if !b {
t.Fatalf("IsDeleted returned false, expected true")
}
}
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