diff --git a/linebot/messaging_api/tests/handwritten/model_reply_message_request_test.go b/linebot/messaging_api/tests/handwritten/model_reply_message_request_test.go
new file mode 100644
index 00000000..88cd0033
--- /dev/null
+++ b/linebot/messaging_api/tests/handwritten/model_reply_message_request_test.go
@@ -0,0 +1,39 @@
+package tests
+
+
+import (
+	"encoding/json"
+	"strings"
+	"testing"
+
+	"github.com/line/line-bot-sdk-go/v7/linebot/messaging_api"
+)
+
+func TestTemplateMessage(t *testing.T) {
+	req := &messaging_api.ReplyMessageRequest{
+		ReplyToken: "JKLJDSFhkljdsjfkla",
+		Messages: []messaging_api.MessageInterface{
+			&messaging_api.TemplateMessage{
+				AltText:  "Buttons alt text",
+				Template: &messaging_api.ButtonsTemplate{
+					ThumbnailImageUrl: "https://example.com/static/buttons/1040.jpg",
+					Title:             "My button sample",
+					Actions: []messaging_api.ActionInterface{
+						&messaging_api.UriAction{
+							Label: "Go to line.me",
+							Uri:   "https://line.me",
+						},
+					},
+				},
+			},
+		},
+	}
+	encodedMsg, err := json.Marshal(req)
+	if err != nil {
+		t.Fatalf("Failed to encode message: %v", err)
+	}
+	encodedMsgStr := string(encodedMsg)
+	if !strings.Contains(encodedMsgStr, `"type":"buttons"`) {
+		t.Errorf("Encoded message doens't contains expected default value: %s", encodedMsgStr)
+	}
+}