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package statedb
import (
"encoding/hex"
"fmt"
"io/ioutil"
"math/big"
"testing"
ethCrypto "github.com/ethereum/go-ethereum/crypto"
"github.com/hermeznetwork/hermez-node/common"
"github.com/iden3/go-iden3-crypto/babyjub"
"github.com/iden3/go-merkletree/db"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func newAccount(t *testing.T, i int) *common.Account {
var sk babyjub.PrivateKey
_, err := hex.Decode(sk[:], []byte("0001020304050607080900010203040506070809000102030405060708090001"))
require.Nil(t, err)
pk := sk.Public()
key, err := ethCrypto.GenerateKey()
require.Nil(t, err)
address := ethCrypto.PubkeyToAddress(key.PublicKey)
return &common.Account{
TokenID: common.TokenID(i),
Nonce: common.Nonce(i),
Balance: big.NewInt(1000),
PublicKey: pk,
EthAddr: address,
}
}
func TestStateDBWithoutMT(t *testing.T) {
dir, err := ioutil.TempDir("", "tmpdb")
require.Nil(t, err)
sdb, err := NewStateDB(dir, false, 0)
assert.Nil(t, err)
// create test accounts
var accounts []*common.Account
for i := 0; i < 100; i++ {
accounts = append(accounts, newAccount(t, i))
}
// get non-existing account, expecting an error
_, err = sdb.GetAccount(common.Idx(1))
assert.NotNil(t, err)
assert.Equal(t, db.ErrNotFound, err)
// add test accounts
for i := 0; i < len(accounts); i++ {
_, err = sdb.CreateAccount(common.Idx(i), accounts[i])
assert.Nil(t, err)
}
for i := 0; i < len(accounts); i++ {
accGetted, err := sdb.GetAccount(common.Idx(i))
assert.Nil(t, err)
assert.Equal(t, accounts[i], accGetted)
}
// try already existing idx and get error
_, err = sdb.GetAccount(common.Idx(1)) // check that exist
assert.Nil(t, err)
_, err = sdb.CreateAccount(common.Idx(1), accounts[1]) // check that can not be created twice
assert.NotNil(t, err)
assert.Equal(t, ErrAccountAlreadyExists, err)
// update accounts
for i := 0; i < len(accounts); i++ {
accounts[i].Nonce = accounts[i].Nonce + 1
_, err = sdb.UpdateAccount(common.Idx(i), accounts[i])
assert.Nil(t, err)
}
_, err = sdb.MTGetProof(common.Idx(1))
assert.NotNil(t, err)
assert.Equal(t, ErrStateDBWithoutMT, err)
}
func TestStateDBWithMT(t *testing.T) {
dir, err := ioutil.TempDir("", "tmpdb")
require.Nil(t, err)
sdb, err := NewStateDB(dir, true, 32)
assert.Nil(t, err)
// create test accounts
var accounts []*common.Account
for i := 0; i < 20; i++ {
accounts = append(accounts, newAccount(t, i))
}
// get non-existing account, expecting an error
_, err = sdb.GetAccount(common.Idx(1))
assert.NotNil(t, err)
assert.Equal(t, db.ErrNotFound, err)
// add test accounts
for i := 0; i < len(accounts); i++ {
_, err = sdb.CreateAccount(common.Idx(i), accounts[i])
assert.Nil(t, err)
}
for i := 0; i < len(accounts); i++ {
accGetted, err := sdb.GetAccount(common.Idx(i))
assert.Nil(t, err)
assert.Equal(t, accounts[i], accGetted)
}
// try already existing idx and get error
_, err = sdb.GetAccount(common.Idx(1)) // check that exist
assert.Nil(t, err)
_, err = sdb.CreateAccount(common.Idx(1), accounts[1]) // check that can not be created twice
assert.NotNil(t, err)
assert.Equal(t, ErrAccountAlreadyExists, err)
_, err = sdb.MTGetProof(common.Idx(1))
assert.Nil(t, err)
// update accounts
for i := 0; i < len(accounts); i++ {
accounts[i].Nonce = accounts[i].Nonce + 1
_, err = sdb.UpdateAccount(common.Idx(i), accounts[i])
assert.Nil(t, err)
}
a, err := sdb.GetAccount(common.Idx(1)) // check that account value has been updated
assert.Nil(t, err)
assert.Equal(t, accounts[1].Nonce, a.Nonce)
}
func TestCheckpoints(t *testing.T) {
dir, err := ioutil.TempDir("", "sdb")
require.Nil(t, err)
sdb, err := NewStateDB(dir, true, 32)
assert.Nil(t, err)
// create test accounts
var accounts []*common.Account
for i := 0; i < 10; i++ {
accounts = append(accounts, newAccount(t, i))
}
// add test accounts
for i := 0; i < len(accounts); i++ {
_, err = sdb.CreateAccount(common.Idx(i), accounts[i])
assert.Nil(t, err)
}
// do checkpoints and check that currentBatch is correct
err = sdb.MakeCheckpoint()
assert.Nil(t, err)
cb, err := sdb.GetCurrentBatch()
assert.Nil(t, err)
assert.Equal(t, common.BatchNum(1), cb)
for i := 1; i < 10; i++ {
err = sdb.MakeCheckpoint()
assert.Nil(t, err)
cb, err = sdb.GetCurrentBatch()
assert.Nil(t, err)
assert.Equal(t, common.BatchNum(i+1), cb)
}
// printCheckpoints(t, sdb.path)
// reset checkpoint
err = sdb.Reset(3)
assert.Nil(t, err)
// check that reset can be repeated (as there exist the 'current' and
// 'BatchNum3', from where the 'current' is a copy)
err = sdb.Reset(3)
require.Nil(t, err)
// check that currentBatch is as expected after Reset
cb, err = sdb.GetCurrentBatch()
assert.Nil(t, err)
assert.Equal(t, common.BatchNum(3), cb)
// advance one checkpoint and check that currentBatch is fine
err = sdb.MakeCheckpoint()
assert.Nil(t, err)
cb, err = sdb.GetCurrentBatch()
assert.Nil(t, err)
assert.Equal(t, common.BatchNum(4), cb)
err = sdb.DeleteCheckpoint(common.BatchNum(9))
assert.Nil(t, err)
err = sdb.DeleteCheckpoint(common.BatchNum(10))
assert.Nil(t, err)
err = sdb.DeleteCheckpoint(common.BatchNum(9)) // does not exist, should return err
assert.NotNil(t, err)
err = sdb.DeleteCheckpoint(common.BatchNum(11)) // does not exist, should return err
assert.NotNil(t, err)
// Create a LocalStateDB from the initial StateDB
dirLocal, err := ioutil.TempDir("", "ldb")
require.Nil(t, err)
ldb, err := NewLocalStateDB(dirLocal, sdb, true, 32)
assert.Nil(t, err)
// get checkpoint 4 from sdb (StateDB) to ldb (LocalStateDB)
err = ldb.Reset(4, true)
assert.Nil(t, err)
// check that currentBatch is 4 after the Reset
cb, err = ldb.GetCurrentBatch()
assert.Nil(t, err)
assert.Equal(t, common.BatchNum(4), cb)
// advance one checkpoint in ldb
err = ldb.MakeCheckpoint()
assert.Nil(t, err)
cb, err = ldb.GetCurrentBatch()
assert.Nil(t, err)
assert.Equal(t, common.BatchNum(5), cb)
// Create a 2nd LocalStateDB from the initial StateDB
dirLocal2, err := ioutil.TempDir("", "ldb2")
require.Nil(t, err)
ldb2, err := NewLocalStateDB(dirLocal2, sdb, true, 32)
assert.Nil(t, err)
// get checkpoint 4 from sdb (StateDB) to ldb (LocalStateDB)
err = ldb2.Reset(4, true)
assert.Nil(t, err)
// check that currentBatch is 4 after the Reset
cb, err = ldb2.GetCurrentBatch()
assert.Nil(t, err)
assert.Equal(t, common.BatchNum(4), cb)
// advance one checkpoint in ldb2
err = ldb2.MakeCheckpoint()
assert.Nil(t, err)
cb, err = ldb2.GetCurrentBatch()
assert.Nil(t, err)
assert.Equal(t, common.BatchNum(5), cb)
debug := false
if debug {
printCheckpoints(t, sdb.path)
printCheckpoints(t, ldb.path)
printCheckpoints(t, ldb2.path)
}
}
func printCheckpoints(t *testing.T, path string) {
files, err := ioutil.ReadDir(path)
assert.Nil(t, err)
fmt.Println(path)
for _, f := range files {
fmt.Println(" " + f.Name())
}
}