Abstract txs generation for ZKInputs tests

- TxProcessor move txCompressedDataEmpty inside the if of tp.zki!=nil
- Abstract generation of transactions for ZKInput tests to avoid code
repetition
  - used at txprocessor & test/zkproof tests

txprocessor/txprocessor.go

@@ -294,8 +294,8 @@ func (tp *TxProcessor) ProcessTxs(coordIdxs []common.Idx, l1usertxs, l1coordinat
 		}
 	}
 
-	txCompressedDataEmpty := common.TxCompressedDataEmpty(tp.config.ChainID)
 	if tp.zki != nil {
+		txCompressedDataEmpty := common.TxCompressedDataEmpty(tp.config.ChainID)
 		last := tp.i - 1
 		if tp.i == 0 {
 			last = 0

txprocessor/txprocessor_test.go

@@ -13,6 +13,7 @@ import (
 	"github.com/hermeznetwork/hermez-node/db/statedb"
 	"github.com/hermeznetwork/hermez-node/log"
 	"github.com/hermeznetwork/hermez-node/test/til"
+	"github.com/hermeznetwork/hermez-node/test/txsets"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -211,7 +212,7 @@ func TestProcessTxsBalances(t *testing.T) {
 	chainID := uint16(0)
 	// generate test transactions from test.SetBlockchain0 code
 	tc := til.NewContext(chainID, common.RollupConstMaxL1UserTx)
-	blocks, err := tc.GenerateBlocks(til.SetBlockchainMinimumFlow0)
+	blocks, err := tc.GenerateBlocks(txsets.SetBlockchainMinimumFlow0)
 	require.NoError(t, err)
 
 	config := Config{
@@ -329,7 +330,7 @@ func TestProcessTxsBalances(t *testing.T) {
 	assert.Equal(t, "10342681351319338354912862547249967104198317571995055517008223832276478908482", tp.s.MT.Root().BigInt().String())
 
 	// use Set of PoolL2 txs
-	poolL2Txs, err := tc.GeneratePoolL2Txs(til.SetPoolL2MinimumFlow1)
+	poolL2Txs, err := tc.GeneratePoolL2Txs(txsets.SetPoolL2MinimumFlow1)
 	assert.NoError(t, err)
 
 	_, err = tp.ProcessTxs(coordIdxs, []common.L1Tx{}, []common.L1Tx{}, poolL2Txs)
@@ -357,7 +358,7 @@ func TestProcessTxsSynchronizer(t *testing.T) {
 	chainID := uint16(0)
 	// generate test transactions from test.SetBlockchain0 code
 	tc := til.NewContext(chainID, common.RollupConstMaxL1UserTx)
-	blocks, err := tc.GenerateBlocks(til.SetBlockchain0)
+	blocks, err := tc.GenerateBlocks(txsets.SetBlockchain0)
 	require.NoError(t, err)
 
 	assert.Equal(t, 31, len(blocks[0].Rollup.L1UserTxs))
@@ -488,7 +489,7 @@ func TestProcessTxsBatchBuilder(t *testing.T) {
 	chainID := uint16(0)
 	// generate test transactions from test.SetBlockchain0 code
 	tc := til.NewContext(chainID, common.RollupConstMaxL1UserTx)
-	blocks, err := tc.GenerateBlocks(til.SetBlockchain0)
+	blocks, err := tc.GenerateBlocks(txsets.SetBlockchain0)
 	require.NoError(t, err)
 
 	// Coordinator Idx where to send the fees
@@ -627,7 +628,7 @@ func TestCreateAccountDepositMaxValue(t *testing.T) {
 	sdb, err := statedb.NewStateDB(dir, 128, statedb.TypeBatchBuilder, nLevels)
 	assert.NoError(t, err)
 
-	users := generateJsUsers(t)
+	users := txsets.GenerateJsUsers(t)
 
 	daMaxHex, err := hex.DecodeString("FFFF")
 	require.NoError(t, err)

txprocessor/zkinputsgen_test.go

@@ -5,17 +5,14 @@ import (
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
-	"math/big"
 	"os"
-	"strconv"
 	"testing"
 
-	ethCommon "github.com/ethereum/go-ethereum/common"
 	"github.com/hermeznetwork/hermez-node/common"
 	"github.com/hermeznetwork/hermez-node/db/statedb"
 	"github.com/hermeznetwork/hermez-node/log"
 	"github.com/hermeznetwork/hermez-node/test/til"
-	"github.com/iden3/go-iden3-crypto/babyjub"
+	"github.com/hermeznetwork/hermez-node/test/txsets"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -39,41 +36,6 @@ func printZKInputs(t *testing.T, zki *common.ZKInputs) {
 	fmt.Println("")
 }
 
-func generateJsUsers(t *testing.T) []til.User {
-	// same values than in the js test
-	// skJsHex is equivalent to the 0000...000i js private key in commonjs
-	skJsHex := []string{"7eb258e61862aae75c6c1d1f7efae5006ffc9e4d5596a6ff95f3df4ea209ea7f", "c005700f76f4b4cec710805c21595688648524df0a9d467afae537b7a7118819", "b373d14c67fb2a517bf4ac831c93341eec8e1b38dbc14e7d725b292a7cf84707", "2064b68d04a7aaae0ac3b36bf6f1850b380f1423be94a506c531940bd4a48b76"}
-	addrHex := []string{"0x7e5f4552091a69125d5dfcb7b8c2659029395bdf", "0x2b5ad5c4795c026514f8317c7a215e218dccd6cf", "0x6813eb9362372eef6200f3b1dbc3f819671cba69", "0x1eff47bc3a10a45d4b230b5d10e37751fe6aa718"}
-	var users []til.User
-	for i := 0; i < len(skJsHex); i++ {
-		skJs, err := hex.DecodeString(skJsHex[i])
-		require.NoError(t, err)
-		var sk babyjub.PrivateKey
-		copy(sk[:], skJs)
-		// bjj := sk.Public()
-		user := til.User{
-			Name: strconv.Itoa(i),
-			BJJ:  &sk,
-			Addr: ethCommon.HexToAddress(addrHex[i]),
-		}
-		users = append(users, user)
-	}
-	assert.Equal(t, "d746824f7d0ac5044a573f51b278acb56d823bec39551d1d7bf7378b68a1b021", users[0].BJJ.Public().String())
-	assert.Equal(t, "4d05c307400c65795f02db96b1b81c60386fd53e947d9d3f749f3d99b1853909", users[1].BJJ.Public().String())
-	assert.Equal(t, "38ffa002724562eb2a952a2503e206248962406cf16392ff32759b6f2a41fe11", users[2].BJJ.Public().String())
-	assert.Equal(t, "c719e6401190be7fa7fbfcd3448fe2755233c01575341a3b09edadf5454f760b", users[3].BJJ.Public().String())
-
-	return users
-}
-
-func signL2Tx(t *testing.T, chainID uint16, user til.User, l2Tx common.PoolL2Tx) common.PoolL2Tx {
-	toSign, err := l2Tx.HashToSign(chainID)
-	require.NoError(t, err)
-	sig := user.BJJ.SignPoseidon(toSign)
-	l2Tx.Signature = sig.Compress()
-	return l2Tx
-}
-
 func TestZKInputsHashTestVector0(t *testing.T) {
 	dir, err := ioutil.TempDir("", "tmpdb")
 	require.NoError(t, err)
@@ -82,34 +44,9 @@ func TestZKInputsHashTestVector0(t *testing.T) {
 	sdb, err := statedb.NewStateDB(dir, 128, statedb.TypeBatchBuilder, 32)
 	require.NoError(t, err)
 
-	// same values than in the js test
-	users := generateJsUsers(t)
-	l1Txs := []common.L1Tx{
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(0),
-			TokenID:       1,
-			FromBJJ:       users[0].BJJ.Public().Compress(),
-			FromEthAddr:   users[0].Addr,
-			ToIdx:         0,
-			Type:          common.TxTypeCreateAccountDeposit,
-			UserOrigin:    true,
-		},
-	}
-	l2Txs := []common.PoolL2Tx{
-		{
-			FromIdx: 256,
-			ToIdx:   256,
-			TokenID: 1,
-			Amount:  big.NewInt(1000),
-			Nonce:   0,
-			Fee:     126,
-			Type:    common.TxTypeTransfer,
-		},
-	}
-
 	chainID := uint16(0)
+	users, coordIdxs, l1UserTxs, l1CoordTxs, l2Txs := txsets.GenerateTxsZKInputsHash0(t, chainID)
+
 	config := Config{
 		NLevels:  32,
 		MaxFeeTx: 8,
@@ -119,7 +56,7 @@ func TestZKInputsHashTestVector0(t *testing.T) {
 	}
 	tp := NewTxProcessor(sdb, config)
 
-	ptOut, err := tp.ProcessTxs(nil, l1Txs, nil, l2Txs)
+	ptOut, err := tp.ProcessTxs(coordIdxs, l1UserTxs, l1CoordTxs, l2Txs)
 	require.NoError(t, err)
 
 	// check expected account keys values from tx inputs
@@ -156,45 +93,9 @@ func TestZKInputsHashTestVector1(t *testing.T) {
 	sdb, err := statedb.NewStateDB(dir, 128, statedb.TypeBatchBuilder, 32)
 	require.NoError(t, err)
 
-	// same values than in the js test
-	users := generateJsUsers(t)
-	l1Txs := []common.L1Tx{
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(0),
-			TokenID:       1,
-			FromBJJ:       users[0].BJJ.Public().Compress(),
-			FromEthAddr:   users[0].Addr,
-			ToIdx:         0,
-			Type:          common.TxTypeCreateAccountDeposit,
-			UserOrigin:    true,
-		},
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(0),
-			TokenID:       1,
-			FromBJJ:       users[1].BJJ.Public().Compress(),
-			FromEthAddr:   users[1].Addr,
-			ToIdx:         0,
-			Type:          common.TxTypeCreateAccountDeposit,
-			UserOrigin:    true,
-		},
-	}
-	l2Txs := []common.PoolL2Tx{
-		{
-			FromIdx: 257,
-			ToIdx:   256,
-			TokenID: 1,
-			Amount:  big.NewInt(1000),
-			Nonce:   0,
-			Fee:     137,
-			Type:    common.TxTypeTransfer,
-		},
-	}
-
 	chainID := uint16(0)
+	users, coordIdxs, l1UserTxs, l1CoordTxs, l2Txs := txsets.GenerateTxsZKInputsHash1(t, chainID)
+
 	config := Config{
 		NLevels:  32,
 		MaxFeeTx: 8,
@@ -204,7 +105,7 @@ func TestZKInputsHashTestVector1(t *testing.T) {
 	}
 	tp := NewTxProcessor(sdb, config)
 
-	ptOut, err := tp.ProcessTxs(nil, l1Txs, nil, l2Txs)
+	ptOut, err := tp.ProcessTxs(coordIdxs, l1UserTxs, l1CoordTxs, l2Txs)
 	require.NoError(t, err)
 
 	// check expected account keys values from tx inputs
@@ -299,40 +200,9 @@ func TestZKInputsEmpty(t *testing.T) {
 	// so that the state tree is not empty (same transactions as
 	// TestZKInputs0)
 
-	// same values than in the js test
-	users := generateJsUsers(t)
+	_, coordIdxs, l1UserTxs, l1CoordTxs, l2Txs = txsets.GenerateTxsZKInputs0(t, chainID)
 
-	l1UserTxs = []common.L1Tx{
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(0),
-			TokenID:       1,
-			FromBJJ:       users[0].BJJ.Public().Compress(),
-			FromEthAddr:   users[0].Addr,
-			ToIdx:         0,
-			Type:          common.TxTypeCreateAccountDeposit,
-			UserOrigin:    true,
-		},
-	}
-	l2Txs = []common.PoolL2Tx{
-		{
-			FromIdx: 256,
-			ToIdx:   256,
-			TokenID: 1,
-			Amount:  big.NewInt(1000),
-			Nonce:   0,
-			Fee:     0,
-			Type:    common.TxTypeTransfer,
-		},
-	}
-
-	toSign, err := l2Txs[0].HashToSign(tp.config.ChainID)
-	require.NoError(t, err)
-	sig := users[0].BJJ.SignPoseidon(toSign)
-	l2Txs[0].Signature = sig.Compress()
-
-	ptOut, err = tp.ProcessTxs(nil, l1UserTxs, nil, l2Txs)
+	ptOut, err = tp.ProcessTxs(coordIdxs, l1UserTxs, l1CoordTxs, l2Txs)
 	require.NoError(t, err)
 
 	rootNonZero := sdb.MT.Root()
@@ -399,39 +269,8 @@ func TestZKInputs0(t *testing.T) {
 	sdb, err := statedb.NewStateDB(dir, 128, statedb.TypeBatchBuilder, nLevels)
 	require.NoError(t, err)
 
-	// same values than in the js test
-	users := generateJsUsers(t)
-
-	l1Txs := []common.L1Tx{
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(0),
-			TokenID:       1,
-			FromBJJ:       users[0].BJJ.Public().Compress(),
-			FromEthAddr:   users[0].Addr,
-			ToIdx:         0,
-			Type:          common.TxTypeCreateAccountDeposit,
-			UserOrigin:    true,
-		},
-	}
-	l2Txs := []common.PoolL2Tx{
-		{
-			FromIdx: 256,
-			ToIdx:   256,
-			TokenID: 1,
-			Amount:  big.NewInt(1000),
-			Nonce:   0,
-			Fee:     0,
-			Type:    common.TxTypeTransfer,
-		},
-	}
-
 	chainID := uint16(0)
-	toSign, err := l2Txs[0].HashToSign(chainID)
-	require.NoError(t, err)
-	sig := users[0].BJJ.SignPoseidon(toSign)
-	l2Txs[0].Signature = sig.Compress()
+	users, coordIdxs, l1UserTxs, l1CoordTxs, l2Txs := txsets.GenerateTxsZKInputs0(t, chainID)
 
 	config := Config{
 		NLevels:  uint32(nLevels),
@@ -442,7 +281,7 @@ func TestZKInputs0(t *testing.T) {
 	}
 	tp := NewTxProcessor(sdb, config)
 
-	ptOut, err := tp.ProcessTxs(nil, l1Txs, nil, l2Txs)
+	ptOut, err := tp.ProcessTxs(coordIdxs, l1UserTxs, l1CoordTxs, l2Txs)
 	require.NoError(t, err)
 
 	// check expected account keys values from tx inputs
@@ -486,50 +325,8 @@ func TestZKInputs1(t *testing.T) {
 	sdb, err := statedb.NewStateDB(dir, 128, statedb.TypeBatchBuilder, nLevels)
 	require.NoError(t, err)
 
-	// same values than in the js test
-	users := generateJsUsers(t)
-
-	l1Txs := []common.L1Tx{
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(0),
-			TokenID:       1,
-			FromBJJ:       users[0].BJJ.Public().Compress(),
-			FromEthAddr:   users[0].Addr,
-			ToIdx:         0,
-			Type:          common.TxTypeCreateAccountDeposit,
-			UserOrigin:    true,
-		},
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(0),
-			TokenID:       1,
-			FromBJJ:       users[1].BJJ.Public().Compress(),
-			FromEthAddr:   users[1].Addr,
-			ToIdx:         0,
-			Type:          common.TxTypeCreateAccountDeposit,
-			UserOrigin:    true,
-		},
-	}
-	l2Txs := []common.PoolL2Tx{
-		{
-			FromIdx: 256,
-			ToIdx:   256,
-			TokenID: 1,
-			Amount:  big.NewInt(1000),
-			Nonce:   0,
-			Fee:     126,
-			Type:    common.TxTypeTransfer,
-		},
-	}
-
 	chainID := uint16(0)
-	toSign, err := l2Txs[0].HashToSign(chainID)
-	require.NoError(t, err)
-	sig := users[0].BJJ.SignPoseidon(toSign)
-	l2Txs[0].Signature = sig.Compress()
+	users, coordIdxs, l1UserTxs, l1CoordTxs, l2Txs := txsets.GenerateTxsZKInputs1(t, chainID)
 
 	config := Config{
 		NLevels:  uint32(nLevels),
@@ -540,8 +337,7 @@ func TestZKInputs1(t *testing.T) {
 	}
 	tp := NewTxProcessor(sdb, config)
 
-	coordIdxs := []common.Idx{257}
-	ptOut, err := tp.ProcessTxs(coordIdxs, l1Txs, nil, l2Txs)
+	ptOut, err := tp.ProcessTxs(coordIdxs, l1UserTxs, l1CoordTxs, l2Txs)
 	require.NoError(t, err)
 
 	// check expected account keys values from tx inputs
@@ -592,79 +388,8 @@ func TestZKInputs2(t *testing.T) {
 	sdb, err := statedb.NewStateDB(dir, 128, statedb.TypeBatchBuilder, nLevels)
 	require.NoError(t, err)
 
-	// same values than in the js test
-	users := generateJsUsers(t)
-
-	l1Txs := []common.L1Tx{
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(0),
-			TokenID:       1,
-			FromBJJ:       users[0].BJJ.Public().Compress(),
-			FromEthAddr:   users[0].Addr,
-			ToIdx:         0,
-			Type:          common.TxTypeCreateAccountDeposit,
-			UserOrigin:    true,
-		},
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(0),
-			TokenID:       1,
-			FromBJJ:       users[1].BJJ.Public().Compress(),
-			FromEthAddr:   users[1].Addr,
-			ToIdx:         0,
-			Type:          common.TxTypeCreateAccountDeposit,
-			UserOrigin:    true,
-		},
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(0),
-			TokenID:       1,
-			FromBJJ:       users[2].BJJ.Public().Compress(),
-			FromEthAddr:   users[2].Addr,
-			ToIdx:         0,
-			Type:          common.TxTypeCreateAccountDeposit,
-			UserOrigin:    true,
-		},
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(0),
-			TokenID:       1,
-			FromBJJ:       users[3].BJJ.Public().Compress(),
-			FromEthAddr:   users[3].Addr,
-			ToIdx:         0,
-			Type:          common.TxTypeCreateAccountDeposit,
-			UserOrigin:    true,
-		},
-	}
-	l2Txs := []common.PoolL2Tx{
-		{
-			FromIdx: 256,
-			ToIdx:   258,
-			TokenID: 1,
-			Amount:  big.NewInt(1000),
-			Nonce:   0,
-			Fee:     126,
-			Type:    common.TxTypeTransfer,
-		},
-		{
-			FromIdx: 256,
-			ToIdx:   259,
-			TokenID: 1,
-			Amount:  big.NewInt(1000),
-			Nonce:   1,
-			Fee:     126,
-			Type:    common.TxTypeTransfer,
-		},
-	}
-
 	chainID := uint16(0)
-	l2Txs[0] = signL2Tx(t, chainID, users[0], l2Txs[0])
-	l2Txs[1] = signL2Tx(t, chainID, users[0], l2Txs[1])
+	users, coordIdxs, l1UserTxs, l1CoordTxs, l2Txs := txsets.GenerateTxsZKInputs2(t, chainID)
 
 	config := Config{
 		NLevels:  uint32(nLevels),
@@ -675,8 +400,7 @@ func TestZKInputs2(t *testing.T) {
 	}
 	tp := NewTxProcessor(sdb, config)
 
-	coordIdxs := []common.Idx{257}
-	ptOut, err := tp.ProcessTxs(coordIdxs, l1Txs, nil, l2Txs)
+	ptOut, err := tp.ProcessTxs(coordIdxs, l1UserTxs, l1CoordTxs, l2Txs)
 	require.NoError(t, err)
 
 	// check expected account keys values from tx inputs
@@ -735,79 +459,8 @@ func TestZKInputs3(t *testing.T) {
 	sdb, err := statedb.NewStateDB(dir, 128, statedb.TypeBatchBuilder, nLevels)
 	require.NoError(t, err)
 
-	// same values than in the js test
-	users := generateJsUsers(t)
-
-	l1Txs := []common.L1Tx{
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(0),
-			TokenID:       1,
-			FromBJJ:       users[0].BJJ.Public().Compress(),
-			FromEthAddr:   users[0].Addr,
-			ToIdx:         0,
-			Type:          common.TxTypeCreateAccountDeposit,
-			UserOrigin:    true,
-		},
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(0),
-			TokenID:       1,
-			FromBJJ:       users[1].BJJ.Public().Compress(),
-			FromEthAddr:   users[1].Addr,
-			ToIdx:         0,
-			Type:          common.TxTypeCreateAccountDeposit,
-			UserOrigin:    true,
-		},
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(0),
-			TokenID:       1,
-			FromBJJ:       users[2].BJJ.Public().Compress(),
-			FromEthAddr:   users[2].Addr,
-			ToIdx:         0,
-			Type:          common.TxTypeCreateAccountDeposit,
-			UserOrigin:    true,
-		},
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(1000),
-			TokenID:       1,
-			FromBJJ:       users[3].BJJ.Public().Compress(),
-			FromEthAddr:   users[3].Addr,
-			ToIdx:         258,
-			Type:          common.TxTypeCreateAccountDepositTransfer,
-			UserOrigin:    true,
-		},
-	}
-	l2Txs := []common.PoolL2Tx{
-		{
-			FromIdx: 256,
-			ToIdx:   258,
-			TokenID: 1,
-			Amount:  big.NewInt(1000),
-			Nonce:   0,
-			Fee:     126,
-			Type:    common.TxTypeTransfer,
-		},
-		{
-			FromIdx: 256,
-			ToIdx:   259,
-			TokenID: 1,
-			Amount:  big.NewInt(1000),
-			Nonce:   1,
-			Fee:     126,
-			Type:    common.TxTypeTransfer,
-		},
-	}
-
 	chainID := uint16(0)
-	l2Txs[0] = signL2Tx(t, chainID, users[0], l2Txs[0])
-	l2Txs[1] = signL2Tx(t, chainID, users[0], l2Txs[1])
+	users, coordIdxs, l1UserTxs, l1CoordTxs, l2Txs := txsets.GenerateTxsZKInputs3(t, chainID)
 
 	config := Config{
 		NLevels:  uint32(nLevels),
@@ -818,8 +471,7 @@ func TestZKInputs3(t *testing.T) {
 	}
 	tp := NewTxProcessor(sdb, config)
 
-	coordIdxs := []common.Idx{257}
-	ptOut, err := tp.ProcessTxs(coordIdxs, l1Txs, nil, l2Txs)
+	ptOut, err := tp.ProcessTxs(coordIdxs, l1UserTxs, l1CoordTxs, l2Txs)
 	require.NoError(t, err)
 
 	// check expected account keys values from tx inputs
@@ -878,89 +530,8 @@ func TestZKInputs4(t *testing.T) {
 	sdb, err := statedb.NewStateDB(dir, 128, statedb.TypeBatchBuilder, nLevels)
 	require.NoError(t, err)
 
-	// same values than in the js test
-	users := generateJsUsers(t)
-
-	l1Txs := []common.L1Tx{
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(0),
-			TokenID:       1,
-			FromBJJ:       users[0].BJJ.Public().Compress(),
-			FromEthAddr:   users[0].Addr,
-			ToIdx:         0,
-			Type:          common.TxTypeCreateAccountDeposit,
-			UserOrigin:    true,
-		},
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(0),
-			TokenID:       1,
-			FromBJJ:       users[1].BJJ.Public().Compress(),
-			FromEthAddr:   users[1].Addr,
-			ToIdx:         0,
-			Type:          common.TxTypeCreateAccountDeposit,
-			UserOrigin:    true,
-		},
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(0),
-			TokenID:       1,
-			FromBJJ:       users[2].BJJ.Public().Compress(),
-			FromEthAddr:   users[2].Addr,
-			ToIdx:         0,
-			Type:          common.TxTypeCreateAccountDeposit,
-			UserOrigin:    true,
-		},
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(1000),
-			TokenID:       1,
-			FromBJJ:       users[3].BJJ.Public().Compress(),
-			FromEthAddr:   users[3].Addr,
-			ToIdx:         258,
-			Type:          common.TxTypeCreateAccountDepositTransfer,
-			UserOrigin:    true,
-		},
-		{
-			FromIdx:       258,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(1000),
-			TokenID:       1,
-			FromEthAddr:   users[2].Addr,
-			ToIdx:         259,
-			Type:          common.TxTypeDepositTransfer,
-			UserOrigin:    true,
-		},
-	}
-	l2Txs := []common.PoolL2Tx{
-		{
-			FromIdx: 256,
-			ToIdx:   258,
-			TokenID: 1,
-			Amount:  big.NewInt(1000),
-			Nonce:   0,
-			Fee:     126,
-			Type:    common.TxTypeTransfer,
-		},
-		{
-			FromIdx: 256,
-			ToIdx:   259,
-			TokenID: 1,
-			Amount:  big.NewInt(1000),
-			Nonce:   1,
-			Fee:     126,
-			Type:    common.TxTypeTransfer,
-		},
-	}
-
 	chainID := uint16(0)
-	l2Txs[0] = signL2Tx(t, chainID, users[0], l2Txs[0])
-	l2Txs[1] = signL2Tx(t, chainID, users[0], l2Txs[1])
+	users, coordIdxs, l1UserTxs, l1CoordTxs, l2Txs := txsets.GenerateTxsZKInputs4(t, chainID)
 
 	config := Config{
 		NLevels:  uint32(nLevels),
@@ -971,8 +542,7 @@ func TestZKInputs4(t *testing.T) {
 	}
 	tp := NewTxProcessor(sdb, config)
 
-	coordIdxs := []common.Idx{257}
-	ptOut, err := tp.ProcessTxs(coordIdxs, l1Txs, nil, l2Txs)
+	ptOut, err := tp.ProcessTxs(coordIdxs, l1UserTxs, l1CoordTxs, l2Txs)
 	require.NoError(t, err)
 
 	// check expected account keys values from tx inputs
@@ -1031,68 +601,8 @@ func TestZKInputs5(t *testing.T) {
 	sdb, err := statedb.NewStateDB(dir, 128, statedb.TypeBatchBuilder, nLevels)
 	require.NoError(t, err)
 
-	// same values than in the js test
-	users := generateJsUsers(t)
-
-	l1Txs := []common.L1Tx{
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(0),
-			TokenID:       1,
-			FromBJJ:       users[0].BJJ.Public().Compress(),
-			FromEthAddr:   users[0].Addr,
-			ToIdx:         0,
-			Type:          common.TxTypeCreateAccountDeposit,
-			UserOrigin:    true,
-		},
-		{
-			FromIdx:       0,
-			DepositAmount: big.NewInt(16000000),
-			Amount:        big.NewInt(0),
-			TokenID:       1,
-			FromBJJ:       users[1].BJJ.Public().Compress(),
-			FromEthAddr:   users[1].Addr,
-			ToIdx:         0,
-			Type:          common.TxTypeCreateAccountDeposit,
-			UserOrigin:    true,
-		},
-		{
-			FromIdx:       257,
-			DepositAmount: big.NewInt(0),
-			Amount:        big.NewInt(1000),
-			TokenID:       1,
-			FromBJJ:       users[1].BJJ.Public().Compress(),
-			FromEthAddr:   users[1].Addr,
-			ToIdx:         1,
-			Type:          common.TxTypeForceExit,
-			UserOrigin:    true,
-		},
-	}
-	l2Txs := []common.PoolL2Tx{
-		{
-			FromIdx: 256,
-			ToIdx:   257,
-			TokenID: 1,
-			Amount:  big.NewInt(1000),
-			Nonce:   0,
-			Fee:     126,
-			Type:    common.TxTypeTransfer,
-		},
-		{
-			FromIdx: 256,
-			ToIdx:   1,
-			TokenID: 1,
-			Amount:  big.NewInt(1000),
-			Nonce:   1,
-			Fee:     126,
-			Type:    common.TxTypeExit,
-		},
-	}
-
 	chainID := uint16(0)
-	l2Txs[0] = signL2Tx(t, chainID, users[0], l2Txs[0])
-	l2Txs[1] = signL2Tx(t, chainID, users[0], l2Txs[1])
+	users, coordIdxs, l1UserTxs, l1CoordTxs, l2Txs := txsets.GenerateTxsZKInputs5(t, chainID)
 
 	config := Config{
 		NLevels:  uint32(nLevels),
@@ -1103,8 +613,7 @@ func TestZKInputs5(t *testing.T) {
 	}
 	tp := NewTxProcessor(sdb, config)
 
-	coordIdxs := []common.Idx{257}
-	ptOut, err := tp.ProcessTxs(coordIdxs, l1Txs, nil, l2Txs)
+	ptOut, err := tp.ProcessTxs(coordIdxs, l1UserTxs, l1CoordTxs, l2Txs)
 	require.NoError(t, err)
 
 	assert.Equal(t, "9004936174112171168716185012590576631374182232656264130522697453639057968430", sdb.MT.Root().BigInt().String())
@@ -1145,7 +654,7 @@ func TestZKInputs5(t *testing.T) {
 
 // TestZKInputs6:
 // Tests ZKInputs generated by the batches generated by
-// til.SetBlockchainMinimumFlow0
+// txsets.SetBlockchainMinimumFlow0
 func TestZKInputs6(t *testing.T) {
 	dir, err := ioutil.TempDir("", "tmpdb")
 	require.NoError(t, err)
@@ -1166,7 +675,7 @@ func TestZKInputs6(t *testing.T) {
 	tp := NewTxProcessor(sdb, config)
 
 	tc := til.NewContext(0, common.RollupConstMaxL1UserTx)
-	blocks, err := tc.GenerateBlocks(til.SetBlockchainMinimumFlow0)
+	blocks, err := tc.GenerateBlocks(txsets.SetBlockchainMinimumFlow0)
 	require.NoError(t, err)
 
 	// restart nonces of TilContext, as will be set by generating directly