Add L1 Queues system for tx generation in Trnskcio

common/account.go

@@ -26,11 +26,11 @@ const (
 	// maxIdxValue is the maximum value that Idx can have (48 bits: maxIdxValue=2**48-1)
 	maxIdxValue = 0xffffffffffff
 
-	// userThreshold determines the threshold from the User Idxs can be
-	userThreshold = 256
+	// UserThreshold determines the threshold from the User Idxs can be
+	UserThreshold = 256
 	// IdxUserThreshold is a Idx type value that determines the threshold
 	// from the User Idxs can be
-	IdxUserThreshold = Idx(userThreshold)
+	IdxUserThreshold = Idx(UserThreshold)
 )
 
 var (

db/statedb/txprocessors_test.go

@@ -5,6 +5,7 @@ import (
 	"testing"
 
 	"github.com/hermeznetwork/hermez-node/common"
+	"github.com/hermeznetwork/hermez-node/eth"
 	"github.com/hermeznetwork/hermez-node/test/transakcio"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -21,46 +22,54 @@ func TestProcessTxsSynchronizer(t *testing.T) {
 	assert.Nil(t, err)
 
 	// generate test transactions from test.SetTest0 code
-	tc := transakcio.NewTestContext()
+	tc := transakcio.NewTestContext(eth.RollupConstMaxL1UserTx)
 	blocks, err := tc.GenerateBlocks(transakcio.SetBlockchain0)
 	require.Nil(t, err)
 
-	assert.Equal(t, 29, len(blocks[0].Batches[0].L1UserTxs))
+	assert.Equal(t, 29, len(blocks[0].L1UserTxs))
 	assert.Equal(t, 0, len(blocks[0].Batches[0].L1CoordinatorTxs))
-	assert.Equal(t, 21, len(blocks[0].Batches[0].L2Txs))
-	assert.Equal(t, 1, len(blocks[0].Batches[1].L1UserTxs))
-	assert.Equal(t, 1, len(blocks[0].Batches[1].L1CoordinatorTxs))
-	assert.Equal(t, 59, len(blocks[0].Batches[1].L2Txs))
-	assert.Equal(t, 9, len(blocks[0].Batches[2].L1UserTxs))
-	assert.Equal(t, 1, len(blocks[0].Batches[2].L1CoordinatorTxs))
-	assert.Equal(t, 8, len(blocks[0].Batches[2].L2Txs))
+	assert.Equal(t, 21, len(blocks[0].Batches[1].L2Txs))
+	assert.Equal(t, 1, len(blocks[1].Batches[0].L1CoordinatorTxs))
+	assert.Equal(t, 59, len(blocks[1].Batches[0].L2Txs))
+	assert.Equal(t, 1, len(blocks[1].Batches[1].L1CoordinatorTxs))
+	assert.Equal(t, 8, len(blocks[1].Batches[1].L2Txs))
 
 	// use first batch
 	l2Txs := common.L2TxsToPoolL2Txs(blocks[0].Batches[0].L2Txs)
-	_, exitInfos, err := sdb.ProcessTxs(blocks[0].Batches[0].L1UserTxs, blocks[0].Batches[0].L1CoordinatorTxs, l2Txs)
+	_, exitInfos, err := sdb.ProcessTxs(blocks[0].L1UserTxs, blocks[0].Batches[0].L1CoordinatorTxs, l2Txs)
+	require.Nil(t, err)
+	assert.Equal(t, 0, len(exitInfos))
+	acc, err := sdb.GetAccount(common.Idx(256))
+	require.Nil(t, err)
+	assert.Equal(t, "50", acc.Balance.String())
+
+	// second batch of first block
+	l2Txs = common.L2TxsToPoolL2Txs(blocks[0].Batches[1].L2Txs)
+	_, exitInfos, err = sdb.ProcessTxs(nil, blocks[0].Batches[1].L1CoordinatorTxs, l2Txs)
 	require.Nil(t, err)
 	// TODO once TTGL is updated, add a check that a input poolL2Tx with
 	// Nonce & TokenID =0, after ProcessTxs call has the expected value
 
 	assert.Equal(t, 0, len(exitInfos))
-	acc, err := sdb.GetAccount(common.Idx(256))
-	assert.Nil(t, err)
+	acc, err = sdb.GetAccount(common.Idx(256))
+	require.Nil(t, err)
 	assert.Equal(t, "28", acc.Balance.String())
 
 	// use second batch
-	l2Txs = common.L2TxsToPoolL2Txs(blocks[0].Batches[1].L2Txs)
-	_, exitInfos, err = sdb.ProcessTxs(blocks[0].Batches[1].L1UserTxs, blocks[0].Batches[1].L1CoordinatorTxs, l2Txs)
+	l2Txs = common.L2TxsToPoolL2Txs(blocks[1].Batches[0].L2Txs)
+	_, exitInfos, err = sdb.ProcessTxs(nil, blocks[1].Batches[0].L1CoordinatorTxs, l2Txs)
 	require.Nil(t, err)
-	assert.Equal(t, 5, len(exitInfos))
+	assert.Equal(t, 4, len(exitInfos)) // the 'ForceExit(1)' is not computed yet, as the batch is without L1UserTxs
 	acc, err = sdb.GetAccount(common.Idx(256))
 	require.Nil(t, err)
-	assert.Equal(t, "48", acc.Balance.String())
+	assert.Equal(t, "53", acc.Balance.String())
 
 	// use third batch
-	l2Txs = common.L2TxsToPoolL2Txs(blocks[0].Batches[2].L2Txs)
-	_, exitInfos, err = sdb.ProcessTxs(blocks[0].Batches[2].L1UserTxs, blocks[0].Batches[2].L1CoordinatorTxs, l2Txs)
+	l2Txs = common.L2TxsToPoolL2Txs(blocks[1].Batches[1].L2Txs)
+	_, exitInfos, err = sdb.ProcessTxs(blocks[1].L1UserTxs, blocks[1].Batches[1].L1CoordinatorTxs, l2Txs)
 	require.Nil(t, err)
-	assert.Equal(t, 1, len(exitInfos))
+
+	assert.Equal(t, 2, len(exitInfos)) // 2, as previous batch was without L1UserTxs, and has pending the 'ForceExit(1) A: 5'
 	acc, err = sdb.GetAccount(common.Idx(256))
 	assert.Nil(t, err)
 	assert.Equal(t, "73", acc.Balance.String())

test/transakcio/lang.go

@@ -31,6 +31,10 @@ var setTypePoolL2 = setType("PoolL2")
 // common.TxType of a new batch
 var typeNewBatch common.TxType = "InstrTypeNewBatch"
 
+// typeNewBatchL1 is used for testing purposes only, and represents the
+// common.TxType of a new batch
+var typeNewBatchL1 common.TxType = "InstrTypeNewBatchL1"
+
 // typeNewBlock is used for testing purposes only, and represents the
 // common.TxType of a new ethereum block
 var typeNewBlock common.TxType = "InstrTypeNewBlock"
@@ -53,6 +57,7 @@ const (
 
 // instruction is the data structure that represents one line of code
 type instruction struct {
+	lineNum    int
 	literal    string
 	from       string
 	to         string
@@ -280,6 +285,9 @@ func (p *parser) parseLine(setType setType) (*instruction, error) {
 		if lit == "batch" {
 			_, _ = p.s.r.ReadString('\n')
 			return &instruction{typ: typeNewBatch}, newEventLine
+		} else if lit == "batchL1" {
+			_, _ = p.s.r.ReadString('\n')
+			return &instruction{typ: typeNewBatchL1}, newEventLine
 		} else if lit == "block" {
 			_, _ = p.s.r.ReadString('\n')
 			return &instruction{typ: typeNewBlock}, newEventLine
@@ -484,52 +492,50 @@ func idxTokenIDToString(idx string, tid common.TokenID) string {
 // parse parses through reader
 func (p *parser) parse() (*parsedSet, error) {
 	ps := &parsedSet{}
-	i := 0
+	i := 0 // lines will start counting at line 1
 	accounts := make(map[string]bool)
 	var setTypeOfSet setType
 	for {
+		i++
 		instruction, err := p.parseLine(setTypeOfSet)
 		if err == errof {
 			break
 		}
 		if err == setTypeLine {
 			if setTypeOfSet != "" {
-				return ps, fmt.Errorf("Instruction of 'Type: %s' when there is already a previous instruction 'Type: %s' defined", instruction.typ, setTypeOfSet)
+				return ps, fmt.Errorf("Line %d: Instruction of 'Type: %s' when there is already a previous instruction 'Type: %s' defined", i, instruction.typ, setTypeOfSet)
 			}
 			if instruction.typ == "PoolL2" {
 				setTypeOfSet = setTypePoolL2
 			} else if instruction.typ == "Blockchain" {
 				setTypeOfSet = setTypeBlockchain
 			} else {
-				log.Fatalf("Invalid set type: '%s'. Valid set types: 'Blockchain', 'PoolL2'", instruction.typ)
+				log.Fatalf("Line %d: Invalid set type: '%s'. Valid set types: 'Blockchain', 'PoolL2'", i, instruction.typ)
 			}
-			i++
 			continue
 		}
 		if err == commentLine {
-			i++
 			continue
 		}
+		instruction.lineNum = i
 		if err == newEventLine {
 			if instruction.typ == typeRegisterToken && instruction.tokenID == common.TokenID(0) {
-				return ps, fmt.Errorf("RegisterToken can not register TokenID 0")
+				return ps, fmt.Errorf("Line %d: RegisterToken can not register TokenID 0", i)
 			}
-			i++
 			ps.instructions = append(ps.instructions, *instruction)
 			continue
 		}
 		if err != nil {
-			return ps, fmt.Errorf("error parsing line %d: %s, err: %s", i, instruction.literal, err.Error())
+			return ps, fmt.Errorf("Line %d: %s, err: %s", i, instruction.literal, err.Error())
 		}
 		if setTypeOfSet == "" {
-			return ps, fmt.Errorf("Set type not defined")
+			return ps, fmt.Errorf("Line %d: Set type not defined", i)
 		}
 		ps.instructions = append(ps.instructions, *instruction)
 		accounts[instruction.from] = true
 		if instruction.typ == common.TxTypeTransfer { // type: Transfer
 			accounts[instruction.to] = true
 		}
-		i++
 	}
 	for a := range accounts {
 		ps.accounts = append(ps.accounts, a)

test/transakcio/lang_test.go

@@ -117,7 +117,7 @@ func TestParseErrors(t *testing.T) {
 	`
 	parser := newParser(strings.NewReader(s))
 	_, err := parser.parse()
-	assert.Equal(t, "error parsing line 1: Deposit(1)A:: 10\n, err: strconv.Atoi: parsing \":\": invalid syntax", err.Error())
+	assert.Equal(t, "Line 2: Deposit(1)A:: 10\n, err: strconv.Atoi: parsing \":\": invalid syntax", err.Error())
 
 	s = `
 		Type: Blockchain
@@ -126,7 +126,7 @@ func TestParseErrors(t *testing.T) {
 	`
 	parser = newParser(strings.NewReader(s))
 	_, err = parser.parse()
-	assert.Equal(t, "error parsing line 3: 20, err: Unexpected Blockchain tx type: 20", err.Error())
+	assert.Equal(t, "Line 4: 20, err: Unexpected Blockchain tx type: 20", err.Error())
 
 	s = `
 		Type: Blockchain
@@ -134,7 +134,7 @@ func TestParseErrors(t *testing.T) {
 	`
 	parser = newParser(strings.NewReader(s))
 	_, err = parser.parse()
-	assert.Equal(t, "error parsing line 1: Transfer(1)A:, err: Expected '-', found ':'", err.Error())
+	assert.Equal(t, "Line 2: Transfer(1)A:, err: Expected '-', found ':'", err.Error())
 
 	s = `
 		Type: Blockchain
@@ -142,7 +142,7 @@ func TestParseErrors(t *testing.T) {
 	`
 	parser = newParser(strings.NewReader(s))
 	_, err = parser.parse()
-	assert.Equal(t, "error parsing line 1: Transfer(1)AB, err: Expected '-', found 'B'", err.Error())
+	assert.Equal(t, "Line 2: Transfer(1)AB, err: Expected '-', found 'B'", err.Error())
 
 	s = `
 		Type: Blockchain
@@ -158,7 +158,7 @@ func TestParseErrors(t *testing.T) {
 	`
 	parser = newParser(strings.NewReader(s))
 	_, err = parser.parse()
-	assert.Equal(t, "error parsing line 1: Transfer(1)A-B:10(256)\n, err: Fee 256 can not be bigger than 255", err.Error())
+	assert.Equal(t, "Line 2: Transfer(1)A-B:10(256)\n, err: Fee 256 can not be bigger than 255", err.Error())
 
 	// check that the PoolTransfer & Transfer are only accepted in the
 	// correct case case (PoolTxs/BlockchainTxs)
@@ -168,14 +168,14 @@ func TestParseErrors(t *testing.T) {
 	`
 	parser = newParser(strings.NewReader(s))
 	_, err = parser.parse()
-	assert.Equal(t, "error parsing line 1: Transfer, err: Unexpected PoolL2 tx type: Transfer", err.Error())
+	assert.Equal(t, "Line 2: Transfer, err: Unexpected PoolL2 tx type: Transfer", err.Error())
 	s = `
 		Type: Blockchain
 		PoolTransfer(1) A-B: 10 (1)
 	`
 	parser = newParser(strings.NewReader(s))
 	_, err = parser.parse()
-	assert.Equal(t, "error parsing line 1: PoolTransfer, err: Unexpected Blockchain tx type: PoolTransfer", err.Error())
+	assert.Equal(t, "Line 2: PoolTransfer, err: Unexpected Blockchain tx type: PoolTransfer", err.Error())
 
 	s = `
 		Type: Blockchain
@@ -183,27 +183,27 @@ func TestParseErrors(t *testing.T) {
 	`
 	parser = newParser(strings.NewReader(s))
 	_, err = parser.parse()
-	assert.Equal(t, "error parsing line 1: >, err: Unexpected '> btch', expected '> batch' or '> block'", err.Error())
+	assert.Equal(t, "Line 2: >, err: Unexpected '> btch', expected '> batch' or '> block'", err.Error())
 
 	// check definition of set Type
 	s = `PoolTransfer(1) A-B: 10 (1)`
 	parser = newParser(strings.NewReader(s))
 	_, err = parser.parse()
-	assert.Equal(t, "error parsing line 0: PoolTransfer, err: Set type not defined", err.Error())
+	assert.Equal(t, "Line 1: PoolTransfer, err: Set type not defined", err.Error())
 	s = `Type: PoolL1`
 	parser = newParser(strings.NewReader(s))
 	_, err = parser.parse()
-	assert.Equal(t, "error parsing line 0: Type:, err: Invalid set type: 'PoolL1'. Valid set types: 'Blockchain', 'PoolL2'", err.Error())
+	assert.Equal(t, "Line 1: Type:, err: Invalid set type: 'PoolL1'. Valid set types: 'Blockchain', 'PoolL2'", err.Error())
 	s = `Type: PoolL1
 		Type: Blockchain`
 	parser = newParser(strings.NewReader(s))
 	_, err = parser.parse()
-	assert.Equal(t, "error parsing line 0: Type:, err: Invalid set type: 'PoolL1'. Valid set types: 'Blockchain', 'PoolL2'", err.Error())
+	assert.Equal(t, "Line 1: Type:, err: Invalid set type: 'PoolL1'. Valid set types: 'Blockchain', 'PoolL2'", err.Error())
 	s = `Type: PoolL2
 		Type: Blockchain`
 	parser = newParser(strings.NewReader(s))
 	_, err = parser.parse()
-	assert.Equal(t, "Instruction of 'Type: Blockchain' when there is already a previous instruction 'Type: PoolL2' defined", err.Error())
+	assert.Equal(t, "Line 2: Instruction of 'Type: Blockchain' when there is already a previous instruction 'Type: PoolL2' defined", err.Error())
 
 	s = `Type: Blockchain
 		RegisterToken(1)
@@ -211,5 +211,5 @@ func TestParseErrors(t *testing.T) {
 		`
 	parser = newParser(strings.NewReader(s))
 	_, err = parser.parse()
-	assert.Equal(t, "RegisterToken can not register TokenID 0", err.Error())
+	assert.Equal(t, "Line 3: RegisterToken can not register TokenID 0", err.Error())
 }

test/transakcio/sets.go

@@ -42,6 +42,9 @@ CreateAccountDeposit(2) B: 5
 CreateAccountDeposit(2) A: 20
 // deposits TokenID: 3
 CreateAccountDeposit(3) B: 100
+
+> batchL1
+
 // transactions TokenID: 1
 Transfer(1) A-B: 5 (1)
 Transfer(1) A-L: 10 (1)
@@ -65,7 +68,8 @@ Transfer(1) H-K: 3 (2)
 Transfer(1) H-K: 3 (1)
 Transfer(1) H-K: 3 (1)
 
-> batch
+> batchL1
+> block
 // A (3) still does not exist, coordinator should create new L1Tx to create the account
 CreateAccountDepositCoordinator(3) A
 
@@ -132,6 +136,7 @@ Exit(1) Y: 5
 Exit(1) Z: 5
 
 > batch
+
 Deposit(1) A: 50
 Deposit(1) B: 5
 Deposit(1) C: 20
@@ -152,6 +157,10 @@ Exit(1) A: 5
 
 // create CoordinatorTx CreateAccount for D, TokenId 2, used at SetPool0 for 'PoolTransfer(2) B-D: 3 (1)'
 CreateAccountDepositCoordinator(2) D
+
+> batchL1
+> batchL1
+> block
 `
 
 // SetPool0 contains a set of transactions from the PoolL2

test/transakcio/sets_test.go

@@ -4,6 +4,7 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/hermeznetwork/hermez-node/eth"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -15,7 +16,7 @@ func TestCompileSets(t *testing.T) {
 	_, err = parser.parse()
 	assert.Nil(t, err)
 
-	tc := NewTestContext()
+	tc := NewTestContext(eth.RollupConstMaxL1UserTx)
 	_, err = tc.GenerateBlocks(SetBlockchain0)
 	assert.Nil(t, err)
 	_, err = tc.GenerateBlocks(SetPool0)

test/transakcio/txs.go

@@ -11,6 +11,7 @@ import (
 	ethCommon "github.com/ethereum/go-ethereum/common"
 	ethCrypto "github.com/ethereum/go-ethereum/crypto"
 	"github.com/hermeznetwork/hermez-node/common"
+	"github.com/hermeznetwork/hermez-node/log"
 	"github.com/iden3/go-iden3-crypto/babyjub"
 )
 
@@ -21,13 +22,33 @@ type TestContext struct {
 	Users                 map[string]*User
 	lastRegisteredTokenID common.TokenID
 	l1CreatedAccounts     map[string]*Account
+
+	// rollupConstMaxL1UserTx Maximum L1-user transactions allowed to be queued in a batch
+	rollupConstMaxL1UserTx int
+
+	idx          int
+	currBlock    BlockData
+	currBatch    BatchData
+	currBatchNum int
+	queues       [][]L1Tx
+	toForgeNum   int
+	openToForge  int
 }
 
 // NewTestContext returns a new TestContext
-func NewTestContext() *TestContext {
+func NewTestContext(rollupConstMaxL1UserTx int) *TestContext {
 	return &TestContext{
-		Users:             make(map[string]*User),
-		l1CreatedAccounts: make(map[string]*Account),
+		Users:                 make(map[string]*User),
+		l1CreatedAccounts:     make(map[string]*Account),
+		lastRegisteredTokenID: 0,
+
+		rollupConstMaxL1UserTx: rollupConstMaxL1UserTx,
+		idx:                    common.UserThreshold,
+		currBatchNum:           0,
+		// start with 2 queues, one for toForge, and the other for openToForge
+		queues:      make([][]L1Tx, 2),
+		toForgeNum:  0,
+		openToForge: 1,
 	}
 }
 
@@ -47,7 +68,7 @@ type User struct {
 // BlockData contains the information of a Block
 type BlockData struct {
 	// block *common.Block // ethereum block
-	// L1UserTxs that were submitted in the block
+	// L1UserTxs that were accepted in the block
 	L1UserTxs        []common.L1Tx
 	Batches          []BatchData
 	RegisteredTokens []common.Token
@@ -55,14 +76,36 @@ type BlockData struct {
 
 // BatchData contains the information of a Batch
 type BatchData struct {
-	L1Batch bool // TODO: Remove once Batch.ForgeL1TxsNum is a pointer
-	// L1UserTxs that were forged in the batch
-	L1UserTxs        []common.L1Tx
-	L1CoordinatorTxs []common.L1Tx
-	L2Txs            []common.L2Tx
-	CreatedAccounts  []common.Account
-	ExitTree         []common.ExitInfo
-	Batch            *common.Batch
+	L1Batch              bool // TODO: Remove once Batch.ForgeL1TxsNum is a pointer
+	L1CoordinatorTxs     []common.L1Tx
+	testL1CoordinatorTxs []L1Tx
+	L2Txs                []common.L2Tx
+	// testL2Tx are L2Txs without the Idx&EthAddr&BJJ setted, but with the
+	// string that represents the account
+	testL2Txs       []L2Tx
+	CreatedAccounts []common.Account
+}
+
+// L1Tx is the data structure used internally for transaction test generation,
+// which contains a common.L1Tx data plus some intermediate data for the
+// transaction generation.
+type L1Tx struct {
+	lineNum     int
+	fromIdxName string
+	toIdxName   string
+
+	L1Tx common.L1Tx
+}
+
+// L2Tx is the data structure used internally for transaction test generation,
+// which contains a common.L2Tx data plus some intermediate data for the
+// transaction generation.
+type L2Tx struct {
+	lineNum     int
+	fromIdxName string
+	toIdxName   string
+	tokenID     common.TokenID
+	L2Tx        common.L2Tx
 }
 
 // GenerateBlocks returns an array of BlockData for a given set. It uses the
@@ -80,167 +123,276 @@ func (tc *TestContext) GenerateBlocks(set string) ([]BlockData, error) {
 	tc.generateKeys(tc.accountsNames)
 
 	var blocks []BlockData
-	currBatchNum := 0
-	var currBlock BlockData
-	var currBatch BatchData
-	idx := 256
 	for _, inst := range parsedSet.instructions {
 		switch inst.typ {
-		case common.TxTypeCreateAccountDeposit, common.TxTypeCreateAccountDepositTransfer, txTypeCreateAccountDepositCoordinator:
+		case txTypeCreateAccountDepositCoordinator:
 			if err := tc.checkIfTokenIsRegistered(inst); err != nil {
-				return nil, err
+				log.Error(err)
+				return nil, fmt.Errorf("Line %d: %s", inst.lineNum, err.Error())
 			}
 			tx := common.L1Tx{
-				// TxID
 				FromEthAddr: tc.Users[inst.from].Addr,
 				FromBJJ:     tc.Users[inst.from].BJJ.Public(),
 				TokenID:     inst.tokenID,
 				LoadAmount:  big.NewInt(int64(inst.loadAmount)),
-				Type:        inst.typ,
+				Type:        common.TxTypeCreateAccountDeposit, // as txTypeCreateAccountDepositCoordinator is not valid oustide Transakcio package
 			}
-			if tc.Users[inst.from].Accounts[inst.tokenID] == nil { // if account is not set yet, set it and increment idx
-				tc.Users[inst.from].Accounts[inst.tokenID] = &Account{
-					Idx:   common.Idx(idx),
-					Nonce: common.Nonce(0),
-				}
-
-				tc.l1CreatedAccounts[idxTokenIDToString(inst.from, inst.tokenID)] = tc.Users[inst.from].Accounts[inst.tokenID]
-				idx++
+			testTx := L1Tx{
+				lineNum:     inst.lineNum,
+				fromIdxName: inst.from,
+				L1Tx:        tx,
 			}
-			if inst.typ == common.TxTypeCreateAccountDepositTransfer {
-				tx.Amount = big.NewInt(int64(inst.amount))
-			}
-			if inst.typ == txTypeCreateAccountDepositCoordinator {
-				tx.Type = common.TxTypeCreateAccountDeposit // as txTypeCreateAccountDepositCoordinator is not valid oustide Transakcio package
-				currBatch.L1CoordinatorTxs = append(currBatch.L1CoordinatorTxs, tx)
-			} else {
-				currBatch.L1UserTxs = append(currBatch.L1UserTxs, tx)
-			}
-		case common.TxTypeDeposit, common.TxTypeDepositTransfer:
+			tc.currBatch.testL1CoordinatorTxs = append(tc.currBatch.testL1CoordinatorTxs, testTx)
+		case common.TxTypeCreateAccountDeposit, common.TxTypeCreateAccountDepositTransfer:
 			if err := tc.checkIfTokenIsRegistered(inst); err != nil {
-				return nil, err
-			}
-			if tc.Users[inst.from].Accounts[inst.tokenID] == nil {
-				return nil, fmt.Errorf("Deposit at User %s for TokenID %d while account not created yet", inst.from, inst.tokenID)
+				log.Error(err)
+				return nil, fmt.Errorf("Line %d: %s", inst.lineNum, err.Error())
 			}
 			tx := common.L1Tx{
-				// TxID
-				FromIdx:     tc.Users[inst.from].Accounts[inst.tokenID].Idx,
 				FromEthAddr: tc.Users[inst.from].Addr,
 				FromBJJ:     tc.Users[inst.from].BJJ.Public(),
 				TokenID:     inst.tokenID,
 				LoadAmount:  big.NewInt(int64(inst.loadAmount)),
 				Type:        inst.typ,
 			}
-			if tc.Users[inst.from].Accounts[inst.tokenID].Idx == common.Idx(0) {
-				// if account.Idx is not set yet, set it and increment idx
-				tc.Users[inst.from].Accounts[inst.tokenID].Idx = common.Idx(idx)
-
-				tc.l1CreatedAccounts[idxTokenIDToString(inst.from, inst.tokenID)] = tc.Users[inst.from].Accounts[inst.tokenID]
-				idx++
+			if inst.typ == common.TxTypeCreateAccountDepositTransfer {
+				tx.Amount = big.NewInt(int64(inst.amount))
+			}
+			testTx := L1Tx{
+				lineNum:     inst.lineNum,
+				fromIdxName: inst.from,
+				toIdxName:   inst.to,
+				L1Tx:        tx,
+			}
+			tc.addToL1Queue(testTx)
+		case common.TxTypeDeposit, common.TxTypeDepositTransfer:
+			if err := tc.checkIfTokenIsRegistered(inst); err != nil {
+				log.Error(err)
+				return nil, fmt.Errorf("Line %d: %s", inst.lineNum, err.Error())
+			}
+			if err := tc.checkIfAccountExists(inst.from, inst); err != nil {
+				log.Error(err)
+				return nil, fmt.Errorf("Line %d: %s", inst.lineNum, err.Error())
+			}
+			tx := common.L1Tx{
+				TokenID:    inst.tokenID,
+				LoadAmount: big.NewInt(int64(inst.loadAmount)),
+				Type:       inst.typ,
 			}
 			if inst.typ == common.TxTypeDepositTransfer {
 				tx.Amount = big.NewInt(int64(inst.amount))
-				// if ToIdx is not set yet, set it and increment idx
-				if tc.Users[inst.to].Accounts[inst.tokenID].Idx == common.Idx(0) {
-					tc.Users[inst.to].Accounts[inst.tokenID].Idx = common.Idx(idx)
-
-					tc.l1CreatedAccounts[idxTokenIDToString(inst.to, inst.tokenID)] = tc.Users[inst.to].Accounts[inst.tokenID]
-					tx.ToIdx = common.Idx(idx)
-					idx++
-				} else {
-					// if Idx account of To already exist, use it for ToIdx
-					tx.ToIdx = tc.Users[inst.to].Accounts[inst.tokenID].Idx
-				}
 			}
-			currBatch.L1UserTxs = append(currBatch.L1UserTxs, tx)
+			testTx := L1Tx{
+				lineNum:     inst.lineNum,
+				fromIdxName: inst.from,
+				toIdxName:   inst.to,
+				L1Tx:        tx,
+			}
+			tc.addToL1Queue(testTx)
 		case common.TxTypeTransfer:
 			if err := tc.checkIfTokenIsRegistered(inst); err != nil {
-				return nil, err
-			}
-			if tc.Users[inst.from].Accounts[inst.tokenID] == nil {
-				return nil, fmt.Errorf("Transfer from User %s for TokenID %d while account not created yet", inst.from, inst.tokenID)
+				log.Error(err)
+				return nil, fmt.Errorf("Line %d: %s", inst.lineNum, err.Error())
 			}
-			// if account of receiver does not exist, create a new CoordinatorL1Tx creating the account
-			if _, ok := tc.l1CreatedAccounts[idxTokenIDToString(inst.to, inst.tokenID)]; !ok {
-				return nil, fmt.Errorf("Can not create Transfer for a non existing account. Batch %d, Instruction: %s", currBatchNum, inst)
-			}
-			tc.Users[inst.from].Accounts[inst.tokenID].Nonce++
 			tx := common.L2Tx{
-				FromIdx: tc.Users[inst.from].Accounts[inst.tokenID].Idx,
-				ToIdx:   tc.Users[inst.to].Accounts[inst.tokenID].Idx,
-				Amount:  big.NewInt(int64(inst.amount)),
-				Fee:     common.FeeSelector(inst.fee),
-				Nonce:   tc.Users[inst.from].Accounts[inst.tokenID].Nonce,
-				Type:    common.TxTypeTransfer,
+				Amount: big.NewInt(int64(inst.amount)),
+				Fee:    common.FeeSelector(inst.fee),
+				Type:   common.TxTypeTransfer,
 			}
 			nTx, err := common.NewPoolL2Tx(tx.PoolL2Tx())
 			if err != nil {
-				return nil, err
+				return nil, fmt.Errorf("Line %d: %s", inst.lineNum, err.Error())
 			}
 			tx = nTx.L2Tx()
-			tx.BatchNum = common.BatchNum(currBatchNum) // when converted to PoolL2Tx BatchNum parameter is lost
-
-			currBatch.L2Txs = append(currBatch.L2Txs, tx)
+			tx.BatchNum = common.BatchNum(tc.currBatchNum) // when converted to PoolL2Tx BatchNum parameter is lost
+			testTx := L2Tx{
+				lineNum:     inst.lineNum,
+				fromIdxName: inst.from,
+				toIdxName:   inst.to,
+				tokenID:     inst.tokenID,
+				L2Tx:        tx,
+			}
+			tc.currBatch.testL2Txs = append(tc.currBatch.testL2Txs, testTx)
 		case common.TxTypeExit:
 			if err := tc.checkIfTokenIsRegistered(inst); err != nil {
-				return nil, err
+				log.Error(err)
+				return nil, fmt.Errorf("Line %d: %s", inst.lineNum, err.Error())
 			}
-			tc.Users[inst.from].Accounts[inst.tokenID].Nonce++
 			tx := common.L2Tx{
-				FromIdx: tc.Users[inst.from].Accounts[inst.tokenID].Idx,
-				ToIdx:   common.Idx(1), // as is an Exit
-				Amount:  big.NewInt(int64(inst.amount)),
-				Nonce:   tc.Users[inst.from].Accounts[inst.tokenID].Nonce,
-				Type:    common.TxTypeExit,
+				ToIdx:  common.Idx(1), // as is an Exit
+				Amount: big.NewInt(int64(inst.amount)),
+				Type:   common.TxTypeExit,
 			}
-			nTx, err := common.NewPoolL2Tx(tx.PoolL2Tx())
-			if err != nil {
-				return nil, err
+			tx.BatchNum = common.BatchNum(tc.currBatchNum) // when converted to PoolL2Tx BatchNum parameter is lost
+			testTx := L2Tx{
+				lineNum:     inst.lineNum,
+				fromIdxName: inst.from,
+				toIdxName:   inst.to,
+				tokenID:     inst.tokenID,
+				L2Tx:        tx,
 			}
-			tx = nTx.L2Tx()
-			currBatch.L2Txs = append(currBatch.L2Txs, tx)
+			tc.currBatch.testL2Txs = append(tc.currBatch.testL2Txs, testTx)
 		case common.TxTypeForceExit:
 			if err := tc.checkIfTokenIsRegistered(inst); err != nil {
-				return nil, err
+				log.Error(err)
+				return nil, fmt.Errorf("Line %d: %s", inst.lineNum, err.Error())
 			}
 			tx := common.L1Tx{
-				FromIdx: tc.Users[inst.from].Accounts[inst.tokenID].Idx,
 				ToIdx:   common.Idx(1), // as is an Exit
 				TokenID: inst.tokenID,
 				Amount:  big.NewInt(int64(inst.amount)),
 				Type:    common.TxTypeExit,
 			}
-			currBatch.L1UserTxs = append(currBatch.L1UserTxs, tx)
+			testTx := L1Tx{
+				lineNum:     inst.lineNum,
+				fromIdxName: inst.from,
+				toIdxName:   inst.to,
+				L1Tx:        tx,
+			}
+			tc.addToL1Queue(testTx)
 		case typeNewBatch:
-			currBlock.Batches = append(currBlock.Batches, currBatch)
-			currBatchNum++
-			currBatch = BatchData{}
+			if err = tc.calculateIdxForL1Txs(true, tc.currBatch.testL1CoordinatorTxs); err != nil {
+				return nil, err
+			}
+			if err = tc.setIdxs(); err != nil {
+				log.Error(err)
+				return nil, err
+			}
+		case typeNewBatchL1:
+			// for each L1UserTx of the queues[ToForgeNum], calculate the Idx
+			if err = tc.calculateIdxForL1Txs(false, tc.queues[tc.toForgeNum]); err != nil {
+				return nil, err
+			}
+			if err = tc.calculateIdxForL1Txs(true, tc.currBatch.testL1CoordinatorTxs); err != nil {
+				return nil, err
+			}
+
+			// once Idxs are calculated, update transactions to use the new Idxs
+			for i := 0; i < len(tc.queues[tc.toForgeNum]); i++ {
+				testTx := &tc.queues[tc.toForgeNum][i]
+				// set real Idx
+				testTx.L1Tx.FromIdx = tc.Users[testTx.fromIdxName].Accounts[testTx.L1Tx.TokenID].Idx
+				testTx.L1Tx.FromEthAddr = tc.Users[testTx.fromIdxName].Addr
+				testTx.L1Tx.FromBJJ = tc.Users[testTx.fromIdxName].BJJ.Public()
+				if testTx.toIdxName == "" {
+					testTx.L1Tx.ToIdx = common.Idx(0)
+				} else {
+					testTx.L1Tx.ToIdx = tc.Users[testTx.toIdxName].Accounts[testTx.L1Tx.TokenID].Idx
+				}
+				tc.currBlock.L1UserTxs = append(tc.currBlock.L1UserTxs, testTx.L1Tx)
+			}
+			if err = tc.setIdxs(); err != nil {
+				log.Error(err)
+				return nil, err
+			}
+			// advance batch
+			tc.toForgeNum++
+			if tc.toForgeNum == tc.openToForge {
+				tc.openToForge++
+				newQueue := []L1Tx{}
+				tc.queues = append(tc.queues, newQueue)
+			}
 		case typeNewBlock:
-			currBlock.Batches = append(currBlock.Batches, currBatch)
-			currBatchNum++
-			currBatch = BatchData{}
-			blocks = append(blocks, currBlock)
-			currBlock = BlockData{}
+			blocks = append(blocks, tc.currBlock)
+			tc.currBlock = BlockData{}
 		case typeRegisterToken:
 			newToken := common.Token{
 				TokenID:     inst.tokenID,
 				EthBlockNum: int64(len(blocks)),
 			}
 			if inst.tokenID != tc.lastRegisteredTokenID+1 {
-				return nil, fmt.Errorf("RegisterToken TokenID should be sequential, expected TokenID: %d, defined TokenID: %d", tc.lastRegisteredTokenID+1, inst.tokenID)
+				return nil, fmt.Errorf("Line %d: RegisterToken TokenID should be sequential, expected TokenID: %d, defined TokenID: %d", inst.lineNum, tc.lastRegisteredTokenID+1, inst.tokenID)
 			}
 			tc.lastRegisteredTokenID++
-			currBlock.RegisteredTokens = append(currBlock.RegisteredTokens, newToken)
+			tc.currBlock.RegisteredTokens = append(tc.currBlock.RegisteredTokens, newToken)
 		default:
-			return nil, fmt.Errorf("Unexpected type: %s", inst.typ)
+			return nil, fmt.Errorf("Line %d: Unexpected type: %s", inst.lineNum, inst.typ)
 		}
 	}
-	currBlock.Batches = append(currBlock.Batches, currBatch)
-	blocks = append(blocks, currBlock)
 
 	return blocks, nil
 }
+
+// calculateIdxsForL1Txs calculates new Idx for new created accounts. If
+// 'isCoordinatorTxs==true', adds the tx to tc.currBatch.L1CoordinatorTxs.
+func (tc *TestContext) calculateIdxForL1Txs(isCoordinatorTxs bool, txs []L1Tx) error {
+	// for each batch.L1CoordinatorTxs of the queues[ToForgeNum], calculate the Idx
+	for i := 0; i < len(txs); i++ {
+		tx := txs[i]
+		if tx.L1Tx.Type == common.TxTypeCreateAccountDeposit || tx.L1Tx.Type == common.TxTypeCreateAccountDepositTransfer {
+			if tc.Users[tx.fromIdxName].Accounts[tx.L1Tx.TokenID] != nil { // if account already exists, return error
+				return fmt.Errorf("Can not create same account twice (same User & same TokenID) (this is a design property of Transakcio)")
+			}
+			tc.Users[tx.fromIdxName].Accounts[tx.L1Tx.TokenID] = &Account{
+				Idx:   common.Idx(tc.idx),
+				Nonce: common.Nonce(0),
+			}
+			tc.l1CreatedAccounts[idxTokenIDToString(tx.fromIdxName, tx.L1Tx.TokenID)] = tc.Users[tx.fromIdxName].Accounts[tx.L1Tx.TokenID]
+			tc.idx++
+		}
+		if isCoordinatorTxs {
+			tc.currBatch.L1CoordinatorTxs = append(tc.currBatch.L1CoordinatorTxs, tx.L1Tx)
+		}
+	}
+	return nil
+}
+
+// setIdxs sets the Idxs to the transactions of the tc.currBatch
+func (tc *TestContext) setIdxs() error {
+	// once Idxs are calculated, update transactions to use the new Idxs
+	for i := 0; i < len(tc.currBatch.testL2Txs); i++ {
+		testTx := &tc.currBatch.testL2Txs[i]
+
+		if tc.Users[testTx.fromIdxName].Accounts[testTx.tokenID] == nil {
+			return fmt.Errorf("Line %d: %s from User %s for TokenID %d while account not created yet", testTx.lineNum, testTx.L2Tx.Type, testTx.fromIdxName, testTx.tokenID)
+		}
+		if testTx.L2Tx.Type == common.TxTypeTransfer {
+			if _, ok := tc.l1CreatedAccounts[idxTokenIDToString(testTx.toIdxName, testTx.tokenID)]; !ok {
+				return fmt.Errorf("Line %d: Can not create Transfer for a non existing account. Batch %d, ToIdx name: %s, TokenID: %d", testTx.lineNum, tc.currBatchNum, testTx.toIdxName, testTx.tokenID)
+			}
+		}
+		tc.Users[testTx.fromIdxName].Accounts[testTx.tokenID].Nonce++
+		testTx.L2Tx.Nonce = tc.Users[testTx.fromIdxName].Accounts[testTx.tokenID].Nonce
+
+		// set real Idx
+		testTx.L2Tx.FromIdx = tc.Users[testTx.fromIdxName].Accounts[testTx.tokenID].Idx
+		if testTx.L2Tx.Type == common.TxTypeTransfer {
+			testTx.L2Tx.ToIdx = tc.Users[testTx.toIdxName].Accounts[testTx.tokenID].Idx
+		}
+		nTx, err := common.NewL2Tx(&testTx.L2Tx)
+		if err != nil {
+			return err
+		}
+		testTx.L2Tx = *nTx
+
+		tc.currBatch.L2Txs = append(tc.currBatch.L2Txs, testTx.L2Tx)
+	}
+
+	tc.currBlock.Batches = append(tc.currBlock.Batches, tc.currBatch)
+	tc.currBatchNum++
+	tc.currBatch = BatchData{}
+
+	return nil
+}
+
+// addToL1Queue adds the L1Tx into the queue that is open and has space
+func (tc *TestContext) addToL1Queue(tx L1Tx) {
+	if len(tc.queues[tc.openToForge]) >= tc.rollupConstMaxL1UserTx {
+		// if current OpenToForge queue reached its Max, move into a
+		// new queue
+		tc.openToForge++
+		newQueue := []L1Tx{}
+		tc.queues = append(tc.queues, newQueue)
+	}
+	tc.queues[tc.openToForge] = append(tc.queues[tc.openToForge], tx)
+}
+
+func (tc *TestContext) checkIfAccountExists(tf string, inst instruction) error {
+	if tc.Users[tf].Accounts[inst.tokenID] == nil {
+		return fmt.Errorf("%s at User: %s, for TokenID: %d, while account not created yet", inst.typ, tf, inst.tokenID)
+	}
+	return nil
+}
 func (tc *TestContext) checkIfTokenIsRegistered(inst instruction) error {
 	if inst.tokenID > tc.lastRegisteredTokenID {
 		return fmt.Errorf("Can not process %s: TokenID %d not registered, last registered TokenID: %d", inst.typ, inst.tokenID, tc.lastRegisteredTokenID)
@@ -266,11 +418,13 @@ func (tc *TestContext) GeneratePoolL2Txs(set string) ([]common.PoolL2Tx, error)
 	for _, inst := range tc.Instructions {
 		switch inst.typ {
 		case common.TxTypeTransfer:
-			if tc.Users[inst.from].Accounts[inst.tokenID] == nil {
-				return nil, fmt.Errorf("Transfer from User %s for TokenID %d while account not created yet", inst.from, inst.tokenID)
+			if err := tc.checkIfAccountExists(inst.from, inst); err != nil {
+				log.Error(err)
+				return nil, fmt.Errorf("Line %d: %s", inst.lineNum, err.Error())
 			}
-			if tc.Users[inst.to].Accounts[inst.tokenID] == nil {
-				return nil, fmt.Errorf("Transfer to User %s for TokenID %d while account not created yet", inst.to, inst.tokenID)
+			if err := tc.checkIfAccountExists(inst.to, inst); err != nil {
+				log.Error(err)
+				return nil, fmt.Errorf("Line %d: %s", inst.lineNum, err.Error())
 			}
 			tc.Users[inst.from].Accounts[inst.tokenID].Nonce++
 			// if account of receiver does not exist, don't use
@@ -292,13 +446,13 @@ func (tc *TestContext) GeneratePoolL2Txs(set string) ([]common.PoolL2Tx, error)
 			}
 			nTx, err := common.NewPoolL2Tx(&tx)
 			if err != nil {
-				return nil, err
+				return nil, fmt.Errorf("Line %d: %s", inst.lineNum, err.Error())
 			}
 			tx = *nTx
 			// perform signature and set it to tx.Signature
 			toSign, err := tx.HashToSign()
 			if err != nil {
-				return nil, err
+				return nil, fmt.Errorf("Line %d: %s", inst.lineNum, err.Error())
 			}
 			sig := tc.Users[inst.to].BJJ.SignPoseidon(toSign)
 			tx.Signature = sig
@@ -316,7 +470,7 @@ func (tc *TestContext) GeneratePoolL2Txs(set string) ([]common.PoolL2Tx, error)
 			}
 			txs = append(txs, tx)
 		default:
-			return nil, fmt.Errorf("instruction type unrecognized: %s", inst.typ)
+			return nil, fmt.Errorf("Line %d: instruction type unrecognized: %s", inst.lineNum, inst.typ)
 		}
 	}
 

test/transakcio/txs_test.go

@@ -5,6 +5,7 @@ import (
 	"testing"
 
 	"github.com/hermeznetwork/hermez-node/common"
+	"github.com/hermeznetwork/hermez-node/eth"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -22,6 +23,9 @@ func TestGenerateBlocks(t *testing.T) {
 		CreateAccountDeposit(1) C: 5
 		CreateAccountDepositTransfer(1) D-A: 15, 10 (3)
 
+		> batchL1
+		> batchL1
+
 		Transfer(1) A-B: 6 (1)
 		Transfer(1) B-D: 3 (1)
 		Transfer(1) A-D: 1 (1)
@@ -40,11 +44,12 @@ func TestGenerateBlocks(t *testing.T) {
 		CreateAccountDeposit(3) User1: 20
 		CreateAccountDepositCoordinator(1) User1
 		CreateAccountDepositCoordinator(3) User0
+		> batchL1
 		Transfer(1) User0-User1: 15 (1)
 		Transfer(3) User1-User0: 15 (1)
 		Transfer(1) A-C: 1 (1)
 
-		> batch
+		> batchL1
 
 		Transfer(1) User1-User0: 1 (1)
 
@@ -53,59 +58,64 @@ func TestGenerateBlocks(t *testing.T) {
 		// Exits
 		Transfer(1) A-B: 1 (1)
 		Exit(1) A: 5
+		
+		> batch
+		> block
+
+		// this transaction should not be generated, as it's after last
+		// batch and last block
+		Transfer(1) User1-User0: 1 (1)
 	`
-	tc := NewTestContext()
+	tc := NewTestContext(eth.RollupConstMaxL1UserTx)
 	blocks, err := tc.GenerateBlocks(set)
 	require.Nil(t, err)
 	assert.Equal(t, 2, len(blocks))
-	assert.Equal(t, 3, len(blocks[0].Batches))
+	assert.Equal(t, 5, len(blocks[0].Batches))
 	assert.Equal(t, 1, len(blocks[1].Batches))
-	assert.Equal(t, 5, len(blocks[0].Batches[0].L1UserTxs))
-	assert.Equal(t, 4, len(blocks[0].Batches[1].L1CoordinatorTxs))
-	assert.Equal(t, 0, len(blocks[1].Batches[0].L1UserTxs))
+	assert.Equal(t, 8, len(blocks[0].L1UserTxs))
+	assert.Equal(t, 4, len(blocks[0].Batches[3].L1CoordinatorTxs))
+	assert.Equal(t, 0, len(blocks[1].L1UserTxs))
 
 	// Check expected values generated by each line
 	// #0: Deposit(1) A: 10
-	tc.checkL1TxParams(t, blocks[0].Batches[0].L1UserTxs[0], common.TxTypeCreateAccountDeposit, 1, "A", "", big.NewInt(10), nil)
+	tc.checkL1TxParams(t, blocks[0].L1UserTxs[0], common.TxTypeCreateAccountDeposit, 1, "A", "", big.NewInt(10), nil)
 	// #1: Deposit(2) A: 20
-	tc.checkL1TxParams(t, blocks[0].Batches[0].L1UserTxs[1], common.TxTypeCreateAccountDeposit, 2, "A", "", big.NewInt(20), nil)
-	// #2: Deposit(1) A: 20
-	tc.checkL1TxParams(t, blocks[0].Batches[0].L1UserTxs[2], common.TxTypeCreateAccountDeposit, 1, "B", "", big.NewInt(5), nil)
-	// #3: CreateAccountDeposit(1) C: 5
-	tc.checkL1TxParams(t, blocks[0].Batches[0].L1UserTxs[3], common.TxTypeCreateAccountDeposit, 1, "C", "", big.NewInt(5), nil)
-	// #4: CreateAccountDepositTransfer(1) D-A: 15, 10 (3)
-	tc.checkL1TxParams(t, blocks[0].Batches[0].L1UserTxs[4], common.TxTypeCreateAccountDepositTransfer, 1, "D", "A", big.NewInt(15), big.NewInt(10))
+	tc.checkL1TxParams(t, blocks[0].L1UserTxs[1], common.TxTypeCreateAccountDeposit, 2, "A", "", big.NewInt(20), nil)
+	// // #2: Deposit(1) A: 20
+	tc.checkL1TxParams(t, blocks[0].L1UserTxs[2], common.TxTypeCreateAccountDeposit, 1, "B", "", big.NewInt(5), nil)
+	// // #3: CreateAccountDeposit(1) C: 5
+	tc.checkL1TxParams(t, blocks[0].L1UserTxs[3], common.TxTypeCreateAccountDeposit, 1, "C", "", big.NewInt(5), nil)
+	// // #4: CreateAccountDepositTransfer(1) D-A: 15, 10 (3)
+	tc.checkL1TxParams(t, blocks[0].L1UserTxs[4], common.TxTypeCreateAccountDepositTransfer, 1, "D", "A", big.NewInt(15), big.NewInt(10))
 	// #5: Transfer(1) A-B: 6 (1)
-	tc.checkL2TxParams(t, blocks[0].Batches[0].L2Txs[0], common.TxTypeTransfer, 1, "A", "B", big.NewInt(6), common.BatchNum(0), common.Nonce(1))
+	tc.checkL2TxParams(t, blocks[0].Batches[2].L2Txs[0], common.TxTypeTransfer, 1, "A", "B", big.NewInt(6), common.BatchNum(2), common.Nonce(1))
 	// #6: Transfer(1) B-D: 3 (1)
-	tc.checkL2TxParams(t, blocks[0].Batches[0].L2Txs[1], common.TxTypeTransfer, 1, "B", "D", big.NewInt(3), common.BatchNum(0), common.Nonce(1))
+	tc.checkL2TxParams(t, blocks[0].Batches[2].L2Txs[1], common.TxTypeTransfer, 1, "B", "D", big.NewInt(3), common.BatchNum(2), common.Nonce(1))
 	// #7: Transfer(1) A-D: 1 (1)
-	tc.checkL2TxParams(t, blocks[0].Batches[0].L2Txs[2], common.TxTypeTransfer, 1, "A", "D", big.NewInt(1), common.BatchNum(0), common.Nonce(2))
+	tc.checkL2TxParams(t, blocks[0].Batches[2].L2Txs[2], common.TxTypeTransfer, 1, "A", "D", big.NewInt(1), common.BatchNum(2), common.Nonce(2))
 	// change of Batch
 	// #8: DepositTransfer(1) A-B: 15, 10 (1)
-	tc.checkL1TxParams(t, blocks[0].Batches[1].L1UserTxs[0], common.TxTypeDepositTransfer, 1, "A", "B", big.NewInt(15), big.NewInt(10))
-	// #9: Deposit(1) User0: 20
-	tc.checkL1TxParams(t, blocks[0].Batches[1].L1UserTxs[0], common.TxTypeDepositTransfer, 1, "A", "B", big.NewInt(15), big.NewInt(10))
+	tc.checkL1TxParams(t, blocks[0].L1UserTxs[5], common.TxTypeDepositTransfer, 1, "A", "B", big.NewInt(15), big.NewInt(10))
 	// #10: Transfer(1) C-A : 3 (1)
-	tc.checkL2TxParams(t, blocks[0].Batches[1].L2Txs[0], common.TxTypeTransfer, 1, "C", "A", big.NewInt(3), common.BatchNum(1), common.Nonce(1))
+	tc.checkL2TxParams(t, blocks[0].Batches[3].L2Txs[0], common.TxTypeTransfer, 1, "C", "A", big.NewInt(3), common.BatchNum(3), common.Nonce(1))
 	// #11: Transfer(2) A-B: 15 (1)
-	tc.checkL2TxParams(t, blocks[0].Batches[1].L2Txs[1], common.TxTypeTransfer, 2, "A", "B", big.NewInt(15), common.BatchNum(1), common.Nonce(1))
+	tc.checkL2TxParams(t, blocks[0].Batches[3].L2Txs[1], common.TxTypeTransfer, 2, "A", "B", big.NewInt(15), common.BatchNum(3), common.Nonce(1))
 	// #12: Deposit(1) User0: 20
-	tc.checkL1TxParams(t, blocks[0].Batches[1].L1UserTxs[1], common.TxTypeCreateAccountDeposit, 1, "User0", "", big.NewInt(20), nil)
-	// #13: Deposit(3) User1: 20
-	tc.checkL1TxParams(t, blocks[0].Batches[1].L1UserTxs[2], common.TxTypeCreateAccountDeposit, 3, "User1", "", big.NewInt(20), nil)
+	tc.checkL1TxParams(t, blocks[0].L1UserTxs[6], common.TxTypeCreateAccountDeposit, 1, "User0", "", big.NewInt(20), nil)
+	// // #13: Deposit(3) User1: 20
+	tc.checkL1TxParams(t, blocks[0].L1UserTxs[7], common.TxTypeCreateAccountDeposit, 3, "User1", "", big.NewInt(20), nil)
 	// #14: Transfer(1) User0-User1: 15 (1)
-	tc.checkL2TxParams(t, blocks[0].Batches[1].L2Txs[3], common.TxTypeTransfer, 1, "User0", "User1", big.NewInt(15), common.BatchNum(1), common.Nonce(1))
+	tc.checkL2TxParams(t, blocks[0].Batches[4].L2Txs[0], common.TxTypeTransfer, 1, "User0", "User1", big.NewInt(15), common.BatchNum(4), common.Nonce(1))
 	// #15: Transfer(3) User1-User0: 15 (1)
-	tc.checkL2TxParams(t, blocks[0].Batches[1].L2Txs[4], common.TxTypeTransfer, 3, "User1", "User0", big.NewInt(15), common.BatchNum(1), common.Nonce(1))
+	tc.checkL2TxParams(t, blocks[0].Batches[4].L2Txs[1], common.TxTypeTransfer, 3, "User1", "User0", big.NewInt(15), common.BatchNum(4), common.Nonce(1))
 	// #16: Transfer(1) A-C: 1 (1)
-	tc.checkL2TxParams(t, blocks[0].Batches[1].L2Txs[5], common.TxTypeTransfer, 1, "A", "C", big.NewInt(1), common.BatchNum(1), common.Nonce(4))
+	tc.checkL2TxParams(t, blocks[0].Batches[4].L2Txs[2], common.TxTypeTransfer, 1, "A", "C", big.NewInt(1), common.BatchNum(4), common.Nonce(4))
 	// change of Batch
 	// #17: Transfer(1) User1-User0: 1 (1)
-	tc.checkL2TxParams(t, blocks[0].Batches[2].L2Txs[0], common.TxTypeTransfer, 1, "User1", "User0", big.NewInt(1), common.BatchNum(2), common.Nonce(1))
+	tc.checkL2TxParams(t, blocks[1].Batches[0].L2Txs[0], common.TxTypeTransfer, 1, "User1", "User0", big.NewInt(1), common.BatchNum(5), common.Nonce(1))
 	// change of Block (implies also a change of batch)
 	// #18: Transfer(1) A-B: 1 (1)
-	tc.checkL2TxParams(t, blocks[1].Batches[0].L2Txs[0], common.TxTypeTransfer, 1, "A", "B", big.NewInt(1), common.BatchNum(3), common.Nonce(5))
+	tc.checkL2TxParams(t, blocks[1].Batches[0].L2Txs[1], common.TxTypeTransfer, 1, "A", "B", big.NewInt(1), common.BatchNum(5), common.Nonce(5))
 }
 
 func (tc *TestContext) checkL1TxParams(t *testing.T, tx common.L1Tx, typ common.TxType, tokenID common.TokenID, from, to string, loadAmount, amount *big.Int) {
@@ -155,8 +165,10 @@ func TestGeneratePoolL2Txs(t *testing.T) {
 		CreateAccountDeposit(3) User1: 5
 		CreateAccountDeposit(2) B: 5
 		CreateAccountDeposit(2) D: 0
+		> batchL1
+		> batchL1
 	`
-	tc := NewTestContext()
+	tc := NewTestContext(eth.RollupConstMaxL1UserTx)
 	_, err := tc.GenerateBlocks(set)
 	require.Nil(t, err)
 	set = `
@@ -203,27 +215,28 @@ func TestGenerateErrors(t *testing.T) {
 	// unregistered token
 	set := `Type: Blockchain
 		CreateAccountDeposit(1) A: 5
+		> batchL1
 		`
-	tc := NewTestContext()
+	tc := NewTestContext(eth.RollupConstMaxL1UserTx)
 	_, err := tc.GenerateBlocks(set)
-	assert.Equal(t, "Can not process CreateAccountDeposit: TokenID 1 not registered, last registered TokenID: 0", err.Error())
+	assert.Equal(t, "Line 2: Can not process CreateAccountDeposit: TokenID 1 not registered, last registered TokenID: 0", err.Error())
 
 	// ensure RegisterToken sequentiality and not using 0
 	set = `
 		Type: Blockchain
 		RegisterToken(0)
 	`
-	tc = NewTestContext()
+	tc = NewTestContext(eth.RollupConstMaxL1UserTx)
 	_, err = tc.GenerateBlocks(set)
-	require.Equal(t, "RegisterToken can not register TokenID 0", err.Error())
+	require.Equal(t, "Line 2: RegisterToken can not register TokenID 0", err.Error())
 
 	set = `
 		Type: Blockchain
 		RegisterToken(2)
 	`
-	tc = NewTestContext()
+	tc = NewTestContext(eth.RollupConstMaxL1UserTx)
 	_, err = tc.GenerateBlocks(set)
-	require.Equal(t, "RegisterToken TokenID should be sequential, expected TokenID: 1, defined TokenID: 2", err.Error())
+	require.Equal(t, "Line 2: RegisterToken TokenID should be sequential, expected TokenID: 1, defined TokenID: 2", err.Error())
 
 	set = `
 		Type: Blockchain
@@ -232,7 +245,57 @@ func TestGenerateErrors(t *testing.T) {
 		RegisterToken(3)
 		RegisterToken(5)
 	`
-	tc = NewTestContext()
+	tc = NewTestContext(eth.RollupConstMaxL1UserTx)
+	_, err = tc.GenerateBlocks(set)
+	require.Equal(t, "Line 5: RegisterToken TokenID should be sequential, expected TokenID: 4, defined TokenID: 5", err.Error())
+
+	// check transactions when account is not created yet
+	set = `
+		Type: Blockchain
+		RegisterToken(1)
+		CreateAccountDeposit(1) A: 10
+		> batchL1
+		CreateAccountDeposit(1) B
+		Transfer(1) A-B: 6 (1)
+		> batch
+	`
+	tc = NewTestContext(eth.RollupConstMaxL1UserTx)
 	_, err = tc.GenerateBlocks(set)
-	require.Equal(t, "RegisterToken TokenID should be sequential, expected TokenID: 4, defined TokenID: 5", err.Error())
+	require.Equal(t, "Line 5: CreateAccountDeposit(1)BTransfer(1) A-B: 6 (1)\n, err: Expected ':', found 'Transfer'", err.Error())
+	set = `
+		Type: Blockchain
+		RegisterToken(1)
+		CreateAccountDeposit(1) A: 10
+		> batchL1
+		CreateAccountDepositCoordinator(1) B
+		> batchL1
+		> batch
+		Transfer(1) A-B: 6 (1)
+		> batch
+	`
+	tc = NewTestContext(eth.RollupConstMaxL1UserTx)
+	_, err = tc.GenerateBlocks(set)
+	require.Nil(t, err)
+
+	// check nonces
+	set = `
+		Type: Blockchain
+		RegisterToken(1)
+		CreateAccountDeposit(1) A: 10
+		> batchL1
+		CreateAccountDepositCoordinator(1) B
+		> batchL1
+		Transfer(1) A-B: 6 (1)
+		Transfer(1) A-B: 6 (1) // on purpose this is moving more money that what it has in the account, Transakcio should not fail
+		Transfer(1) B-A: 6 (1)
+		Exit(1) A: 3
+		> batch
+	`
+	tc = NewTestContext(eth.RollupConstMaxL1UserTx)
+	_, err = tc.GenerateBlocks(set)
+	require.Nil(t, err)
+	assert.Equal(t, common.Nonce(3), tc.Users["A"].Accounts[common.TokenID(1)].Nonce)
+	assert.Equal(t, common.Idx(256), tc.Users["A"].Accounts[common.TokenID(1)].Idx)
+	assert.Equal(t, common.Nonce(1), tc.Users["B"].Accounts[common.TokenID(1)].Nonce)
+	assert.Equal(t, common.Idx(257), tc.Users["B"].Accounts[common.TokenID(1)].Idx)
 }