fix(export): 导出逻辑与当前筛选条件对齐

backend/internal/handler/admin/redeem_export_handler_test.go

@@ -0,0 +1,49 @@
+package admin
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/gin-gonic/gin"
+	"github.com/stretchr/testify/require"
+)
+
+func setupRedeemExportRouter() (*gin.Engine, *stubAdminService) {
+	gin.SetMode(gin.TestMode)
+	router := gin.New()
+	adminSvc := newStubAdminService()
+
+	h := NewRedeemHandler(adminSvc, nil)
+	router.GET("/api/v1/admin/redeem-codes/export", h.Export)
+	return router, adminSvc
+}
+
+func TestRedeemExportPassesSearchAndSort(t *testing.T) {
+	router, adminSvc := setupRedeemExportRouter()
+
+	rec := httptest.NewRecorder()
+	req := httptest.NewRequest(http.MethodGet, "/api/v1/admin/redeem-codes/export?type=balance&status=unused&search=ABC&sort_by=value&sort_order=asc", nil)
+	router.ServeHTTP(rec, req)
+	require.Equal(t, http.StatusOK, rec.Code)
+
+	require.Equal(t, 1, adminSvc.lastListRedeemCodes.calls)
+	require.Equal(t, "balance", adminSvc.lastListRedeemCodes.codeType)
+	require.Equal(t, "unused", adminSvc.lastListRedeemCodes.status)
+	require.Equal(t, "ABC", adminSvc.lastListRedeemCodes.search)
+	require.Equal(t, "value", adminSvc.lastListRedeemCodes.sortBy)
+	require.Equal(t, "asc", adminSvc.lastListRedeemCodes.sortOrder)
+}
+
+func TestRedeemExportSortDefaults(t *testing.T) {
+	router, adminSvc := setupRedeemExportRouter()
+
+	rec := httptest.NewRecorder()
+	req := httptest.NewRequest(http.MethodGet, "/api/v1/admin/redeem-codes/export", nil)
+	router.ServeHTTP(rec, req)
+	require.Equal(t, http.StatusOK, rec.Code)
+
+	require.Equal(t, 1, adminSvc.lastListRedeemCodes.calls)
+	require.Equal(t, "id", adminSvc.lastListRedeemCodes.sortBy)
+	require.Equal(t, "desc", adminSvc.lastListRedeemCodes.sortOrder)
+}