fix db file dependencies (#56)

internal/wechatdb/datasource/dbm/dbm.go

@@ -34,7 +34,7 @@ func NewDBManager(path string) *DBManager {
 	}
 }
 
-func (d *DBManager) AddGroup(g Group) error {
+func (d *DBManager) AddGroup(g *Group) error {
 	fg, err := filemonitor.NewFileGroup(g.Name, d.path, g.Pattern, g.BlackList)
 	if err != nil {
 		return err

internal/wechatdb/datasource/dbm/dbm_test.go

@@ -9,7 +9,7 @@ import (
 func TestXxx(t *testing.T) {
 	path := "/Users/sarv/Documents/chatlog/bigjun_9e7a"
 
-	g := Group{
+	g := &Group{
 		Name:      "session",
 		Pattern:   `session\.db$`,
 		BlackList: []string{},