优化结构

internal/integration/payment/result_test.go

@@ -1,13 +1,12 @@
 package payment
 
 import (
+	"kra/internal/biz/system"
 	"testing"
-
-	"kra/internal/biz"
 )
 
 func TestCallbackFieldsAcceptsCaseInsensitiveContentType(t *testing.T) {
-	callback := &biz.PaymentCallback{
+	callback := &system.PaymentCallback{
 		Headers: map[string]string{"content-type": "Application/X-WWW-Form-Urlencoded"},
 		Body:    []byte("out_trade_no=ORDER-1&sign=signature"),
 	}