Test changes.

.gitignore

@@ -2,3 +2,5 @@ test/basic/basic
 test/basic/pgen.go
 test/basic/pgen_aaa.go
 test/basic/db
+test/tidy/db
+test/tidy/pgen.go

test/tidy/main.go

@@ -9,7 +9,7 @@ import (
 func main() {
 	tc := persist.TidyConfig{
 		Interval: 2 * time.Second,
-		Func:persist.ExpireAfter(-5 * time.Second),
+		Func: persist.ExpireAfter(-5 * time.Second),
 	}
 	persist.Init(persist.Config{Tidy: tc})
 
@@ -20,7 +20,9 @@ func main() {
 	x.Set(3)
 	persist.Commit()
 	fmt.Println(x.History())
-	time.Sleep(time.Second * 15)
+	time.Sleep(time.Second * 3)
+	fmt.Println(x.History())
+	time.Sleep(time.Second * 3)
 	fmt.Println(x.History())
 	persist.Shutdown()
 }