Add StateDB txprocessor tests using txtest generators

Add StateDB tx processor tests using tx test generators:
- update statedb/ tx processors
- add statedb tx processors tests

db/statedb/txprocessors_test.go

@@ -0,0 +1,93 @@
+package statedb
+
+import (
+	"io/ioutil"
+	"strings"
+	"testing"
+
+	"github.com/hermeznetwork/hermez-node/common"
+	"github.com/hermeznetwork/hermez-node/test"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestProcessTxs(t *testing.T) {
+	dir, err := ioutil.TempDir("", "tmpdb")
+	require.Nil(t, err)
+
+	sdb, err := NewStateDB(dir, true, 32)
+	assert.Nil(t, err)
+
+	// generate test transactions from test.SetTest0 code
+	parser := test.NewParser(strings.NewReader(test.SetTest0))
+	instructions, err := parser.Parse()
+	assert.Nil(t, err)
+
+	l1Txs, coordinatorL1Txs, poolL2Txs := test.GenerateTestTxs(t, instructions)
+	assert.Equal(t, 29, len(l1Txs[0]))
+	assert.Equal(t, 0, len(coordinatorL1Txs[0]))
+	assert.Equal(t, 21, len(poolL2Txs[0]))
+
+	// iterate for each batch
+	for i := 0; i < len(l1Txs); i++ {
+		l2Txs := common.PoolL2TxsToL2Txs(poolL2Txs[i])
+
+		_, _, err := sdb.ProcessTxs(true, l1Txs[i], coordinatorL1Txs[i], l2Txs)
+		require.Nil(t, err)
+	}
+
+	acc, err := sdb.GetAccount(common.Idx(1))
+	assert.Nil(t, err)
+	assert.Equal(t, "23", acc.Balance.String())
+}
+
+func TestProcessTxsBatchByBatch(t *testing.T) {
+	dir, err := ioutil.TempDir("", "tmpdb")
+	require.Nil(t, err)
+
+	sdb, err := NewStateDB(dir, true, 32)
+	assert.Nil(t, err)
+
+	// generate test transactions from test.SetTest0 code
+	parser := test.NewParser(strings.NewReader(test.SetTest0))
+	instructions, err := parser.Parse()
+	assert.Nil(t, err)
+
+	l1Txs, coordinatorL1Txs, poolL2Txs := test.GenerateTestTxs(t, instructions)
+	assert.Equal(t, 29, len(l1Txs[0]))
+	assert.Equal(t, 0, len(coordinatorL1Txs[0]))
+	assert.Equal(t, 21, len(poolL2Txs[0]))
+	assert.Equal(t, 5, len(l1Txs[1]))
+	assert.Equal(t, 1, len(coordinatorL1Txs[1]))
+	assert.Equal(t, 55, len(poolL2Txs[1]))
+	assert.Equal(t, 10, len(l1Txs[2]))
+	assert.Equal(t, 0, len(coordinatorL1Txs[2]))
+	assert.Equal(t, 7, len(poolL2Txs[2]))
+
+	// use first batch
+	l2txs := common.PoolL2TxsToL2Txs(poolL2Txs[0])
+	_, exitInfos, err := sdb.ProcessTxs(true, l1Txs[0], coordinatorL1Txs[0], l2txs)
+	require.Nil(t, err)
+	assert.Equal(t, 0, len(exitInfos))
+	acc, err := sdb.GetAccount(common.Idx(1))
+	assert.Nil(t, err)
+	assert.Equal(t, "28", acc.Balance.String())
+
+	// use second batch
+	l2txs = common.PoolL2TxsToL2Txs(poolL2Txs[1])
+	_, exitInfos, err = sdb.ProcessTxs(true, l1Txs[1], coordinatorL1Txs[1], l2txs)
+	require.Nil(t, err)
+	assert.Equal(t, 5, len(exitInfos))
+	acc, err = sdb.GetAccount(common.Idx(1))
+	assert.Nil(t, err)
+	assert.Equal(t, "48", acc.Balance.String())
+
+	// use third batch
+	l2txs = common.PoolL2TxsToL2Txs(poolL2Txs[2])
+	_, exitInfos, err = sdb.ProcessTxs(true, l1Txs[2], coordinatorL1Txs[2], l2txs)
+	require.Nil(t, err)
+	assert.Equal(t, 1, len(exitInfos))
+	acc, err = sdb.GetAccount(common.Idx(1))
+	assert.Nil(t, err)
+	assert.Equal(t, "23", acc.Balance.String())
+}