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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 TestNewStateDBIntermediateState(t *testing.T) { dir, err := ioutil.TempDir("", "tmpdb") require.Nil(t, err)
sdb, err := NewStateDB(dir, false, 0) assert.Nil(t, err)
// test values
k0 := []byte("testkey0") k1 := []byte("testkey1") v0 := []byte("testvalue0") v1 := []byte("testvalue1")
// store some data
tx, err := sdb.db.NewTx() assert.Nil(t, err) err = tx.Put(k0, v0) assert.Nil(t, err) err = tx.Commit() assert.Nil(t, err) v, err := sdb.db.Get(k0) assert.Nil(t, err) assert.Equal(t, v0, v)
// call NewStateDB which should get the db at the last checkpoint state
// executing a Reset (discarding the last 'testkey0'&'testvalue0' data)
sdb, err = NewStateDB(dir, false, 0) assert.Nil(t, err) v, err = sdb.db.Get(k0) assert.NotNil(t, err) assert.Equal(t, db.ErrNotFound, err) assert.Nil(t, v)
// store the same data from the beginning that has ben lost since last NewStateDB
tx, err = sdb.db.NewTx() assert.Nil(t, err) err = tx.Put(k0, v0) assert.Nil(t, err) err = tx.Commit() assert.Nil(t, err) v, err = sdb.db.Get(k0) assert.Nil(t, err) assert.Equal(t, v0, v)
// make checkpoints with the current state
bn, err := sdb.GetCurrentBatch() assert.Nil(t, err) assert.Equal(t, common.BatchNum(0), bn) err = sdb.MakeCheckpoint() assert.Nil(t, err) bn, err = sdb.GetCurrentBatch() assert.Nil(t, err) assert.Equal(t, common.BatchNum(1), bn)
// write more data
tx, err = sdb.db.NewTx() assert.Nil(t, err) err = tx.Put(k1, v1) assert.Nil(t, err) err = tx.Commit() assert.Nil(t, err)
v, err = sdb.db.Get(k1) assert.Nil(t, err) assert.Equal(t, v1, v)
// call NewStateDB which should get the db at the last checkpoint state
// executing a Reset (discarding the last 'testkey1'&'testvalue1' data)
sdb, err = NewStateDB(dir, false, 0) assert.Nil(t, err)
v, err = sdb.db.Get(k0) assert.Nil(t, err) assert.Equal(t, v0, v)
v, err = sdb.db.Get(k1) assert.NotNil(t, err) assert.Equal(t, db.ErrNotFound, err) assert.Nil(t, v)}
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()) }}
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