fix: add rdb test

rdb.go

@@ -14,10 +14,10 @@ type Rdb struct {
 	path string
 }
 
-func NewRdb(path string) (*Rdb, error) {
+func NewRdb(path string) *Rdb {
 	return &Rdb{
 		path: path,
-	}, nil
+	}
 }
 
 func (r *Rdb) SaveDB() error {

rdb_test.go

@@ -0,0 +1,12 @@
+package main
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestRdb(t *testing.T) {
+	ast := assert.New(t)
+	rdb := NewRdb("main.go")
+	ast.Nil(rdb.LoadDB())
+}

rotom.go

@@ -68,10 +68,7 @@ func InitDB(config *Config) (err error) {
 	db.dict = New()
 
 	if config.Save {
-		db.rdb, err = NewRdb(config.SaveFileName)
-		if err != nil {
-			return
-		}
+		db.rdb = NewRdb(config.SaveFileName)
 		log.Debug().Msg("start loading rdb file...")
 		if err = db.rdb.LoadDB(); err != nil {
 			return err