diff --git a/sequencesender/mock_etherman_test.go b/sequencesender/mock_etherman_test.go
new file mode 100644
index 0000000000..9ec864b0f2
--- /dev/null
+++ b/sequencesender/mock_etherman_test.go
@@ -0,0 +1,84 @@
+package sequencesender_test
+
+import (
+	"context"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/common"
+	coretype "github.com/ethereum/go-ethereum/core/types"
+	"github.com/stretchr/testify/assert"
+
+	"github.com/0xPolygonHermez/zkevm-node/etherman/types"
+	"github.com/0xPolygonHermez/zkevm-node/sequencesender"
+)
+
+func TestBuildSequenceBatchesTxData(t *testing.T) {
+	mockEtherman := sequencesender.NewEthermanMock(t)
+
+	sender := common.HexToAddress("0x1234567890abcdef1234567890abcdef12345678")
+	sequences := []types.Sequence{}
+	maxSequenceTimestamp := uint64(1234567890)
+	initSequenceBatchNumber := uint64(1)
+	l2Coinbase := common.HexToAddress("0xabcdefabcdefabcdefabcdefabcdefabcdef")
+
+	mockEtherman.On("BuildSequenceBatchesTxData", sender, sequences, maxSequenceTimestamp, initSequenceBatchNumber, l2Coinbase).
+		Return(&sender, []byte{0x01, 0x02, 0x03}, nil)
+
+	addr, data, err := mockEtherman.BuildSequenceBatchesTxData(sender, sequences, maxSequenceTimestamp, initSequenceBatchNumber, l2Coinbase)
+
+	assert.NoError(t, err)
+	assert.Equal(t, &sender, addr)
+	assert.Equal(t, []byte{0x01, 0x02, 0x03}, data)
+
+	mockEtherman.AssertCalled(t, "BuildSequenceBatchesTxData", sender, sequences, maxSequenceTimestamp, initSequenceBatchNumber, l2Coinbase)
+}
+
+func TestEstimateGasSequenceBatches(t *testing.T) {
+	mockEtherman := sequencesender.NewEthermanMock(t)
+
+	sender := common.HexToAddress("0x1234567890abcdef1234567890abcdef12345678")
+	sequences := []types.Sequence{}
+	maxSequenceTimestamp := uint64(1234567890)
+	initSequenceBatchNumber := uint64(1)
+	l2Coinbase := common.HexToAddress("0xabcdefabcdefabcdefabcdefabcdefabcdef")
+	tx := &coretype.Transaction{}
+
+	mockEtherman.On("EstimateGasSequenceBatches", sender, sequences, maxSequenceTimestamp, initSequenceBatchNumber, l2Coinbase).
+		Return(tx, nil)
+
+	result, err := mockEtherman.EstimateGasSequenceBatches(sender, sequences, maxSequenceTimestamp, initSequenceBatchNumber, l2Coinbase)
+
+	assert.NoError(t, err)
+	assert.Equal(t, tx, result)
+
+	mockEtherman.AssertCalled(t, "EstimateGasSequenceBatches", sender, sequences, maxSequenceTimestamp, initSequenceBatchNumber, l2Coinbase)
+}
+
+func TestGetLatestBatchNumber(t *testing.T) {
+	mockEtherman := sequencesender.NewEthermanMock(t)
+
+	mockEtherman.On("GetLatestBatchNumber").Return(uint64(42), nil)
+
+	batchNumber, err := mockEtherman.GetLatestBatchNumber()
+
+	assert.NoError(t, err)
+	assert.Equal(t, uint64(42), batchNumber)
+
+	mockEtherman.AssertCalled(t, "GetLatestBatchNumber")
+}
+
+func TestGetLatestBlockHeader(t *testing.T) {
+	mockEtherman := sequencesender.NewEthermanMock(t)
+
+	ctx := context.Background()
+	header := &coretype.Header{}
+
+	mockEtherman.On("GetLatestBlockHeader", ctx).Return(header, nil)
+
+	result, err := mockEtherman.GetLatestBlockHeader(ctx)
+
+	assert.NoError(t, err)
+	assert.Equal(t, header, result)
+
+	mockEtherman.AssertCalled(t, "GetLatestBlockHeader", ctx)
+}