fix test-identified timeline cache package issues

internal/id/page.go

@@ -1,10 +1,30 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
 package id
 
 import (
 	"github.com/superseriousbusiness/gotosocial/internal/paging"
 )
 
-// ValidatePage ...
+// ValidatePage ensures that passed page has valid paging
+// values for the current defined ordering. That is, it
+// ensures a valid page *cursor* value, using id.Highest
+// or id.Lowest where appropriate when none given.
 func ValidatePage(page *paging.Page) {
 	if page == nil {
 		// unpaged