test: add test case

models/msg/process_test.go

@@ -17,9 +17,6 @@ package msg
 import (
 	"bytes"
 	"encoding/binary"
-	"encoding/json"
-	"fmt"
-	"net"
 	"reflect"
 	"testing"
 

models/proto/udp/udp_test.go

@@ -0,0 +1,18 @@
+package udp
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestUdpPacket(t *testing.T) {
+	assert := assert.New(t)
+
+	buf := []byte("hello world")
+	udpMsg := NewUdpPacket(buf, nil, nil)
+
+	newBuf, err := GetContent(udpMsg)
+	assert.NoError(err)
+	assert.EqualValues(buf, newBuf)
+}