fix test errors

pulsar/message.go

diff --git a/pulsar/message.go b/pulsar/message.go
index 4131726..fc5f038 100644
--- a/pulsar/message.go
+++ b/pulsar/message.go
@@ -18,11 +18,12 @@
 package pulsar
 
 import (
-	"github.com/pkg/errors"
 	"math"
 	"strconv"
 	"strings"
 	"time"
+
+	"github.com/pkg/errors"
 )
 
 // ProducerMessage abstraction used in Pulsar producer
@@ -134,8 +135,8 @@
 	return deserializeMessageID(data)
 }
 
-func MessageIDFromParts(ledgerId, entryId int64, batchIdx, partitionIdx int32) MessageID {
-	return newMessageID(ledgerId, entryId, batchIdx, partitionIdx)
+func MessageIDFromParts(ledgerID, entryID int64, batchIdx, partitionIdx int32) MessageID {
+	return newMessageID(ledgerID, entryID, batchIdx, partitionIdx)
 }
 
 func MessageIDFromString(str string) (MessageID, error) {
@@ -146,12 +147,12 @@
 		return nil, errors.Errorf("invalid message id string. %s", str)
 	}
 
-	ledgerId, err := strconv.ParseInt(s[0], 10, 64)
+	ledgerID, err := strconv.ParseInt(s[0], 10, 64)
 	if err != nil {
 		return nil, errors.Errorf("invalid ledger id. %s", str)
 	}
 
-	entryId, err := strconv.ParseInt(s[1], 10, 64)
+	entryID, err := strconv.ParseInt(s[1], 10, 64)
 	if err != nil {
 		return nil, errors.Errorf("invalid entry id. %s", str)
 	}
@@ -173,7 +174,7 @@
 		}
 		batchIdx = int32(bi)
 	}
-	return newMessageID(ledgerId, entryId, batchIdx, partitionIdx), nil
+	return newMessageID(ledgerID, entryID, batchIdx, partitionIdx), nil
 }
 
 // EarliestMessageID returns a messageID that points to the earliest message available in a topic

pulsar/message_test.go

diff --git a/pulsar/message_test.go b/pulsar/message_test.go
index 1467a23..14d7d83 100644
--- a/pulsar/message_test.go
+++ b/pulsar/message_test.go
@@ -2,21 +2,22 @@
 
 import (
 	"github.com/stretchr/testify/assert"
+
 	"testing"
 )
 
 func TestMessageIDFromString(t *testing.T) {
 	id, err := MessageIDFromString("1:2")
 	assert.Nil(t, err)
-	assert.True(t, id.Equals(MessageIDFromParts(1, 2, -1,  -1)))
+	assert.True(t, id.Equals(MessageIDFromParts(1, 2, -1, -1)))
 
 	id, err = MessageIDFromString("1:2:3")
 	assert.Nil(t, err)
-	assert.True(t, id.Equals(MessageIDFromParts(1, 2, -1,  3)))
+	assert.True(t, id.Equals(MessageIDFromParts(1, 2, -1, 3)))
 
 	id, err = MessageIDFromString("1:2:3:4")
 	assert.Nil(t, err)
-	assert.True(t, id.Equals(MessageIDFromParts(1, 2, 4,  3)))
+	assert.True(t, id.Equals(MessageIDFromParts(1, 2, 4, 3)))
 }
 
 func TestMessageIDFromStringErrors(t *testing.T) {