add tests

internal/handlers/ussd/menuhandler.go

@@ -74,9 +74,9 @@ func NewHandlers(appFlags *asm.FlagParser, userdataStore db.Db) (*Handlers, erro
 		Db: userdataStore,
 	}
 	h := &Handlers{
-		userdataStore:      userDb,
-		flagManager:        appFlags,
-		accountService:     &server.AccountService{},
+		userdataStore:  userDb,
+		flagManager:    appFlags,
+		accountService: &server.AccountService{},
 	}
 	return h, nil
 }
@@ -748,7 +748,8 @@ func (h *Handlers) ValidateAmount(ctx context.Context, sym string, input []byte)
 
 	flag_invalid_amount, _ := h.flagManager.GetFlag("flag_invalid_amount")
 
-	publicKey, _ := utils.ReadEntry(ctx, h.userdataStore, sessionId, utils.DATA_PUBLIC_KEY)
+	store := h.userdataStore
+	publicKey, _ := store.ReadEntry(ctx, sessionId, utils.DATA_PUBLIC_KEY)
 
 	amountStr := string(input)
 
@@ -792,7 +793,6 @@ func (h *Handlers) ValidateAmount(ctx context.Context, sym string, input []byte)
 	}
 
 	res.Content = fmt.Sprintf("%.3f", inputAmount) // Format to 3 decimal places
-	store := h.userdataStore
 	err = store.WriteEntry(ctx, sessionId, utils.DATA_AMOUNT, []byte(amountStr))
 	if err != nil {
 		return res, err