feat: SEO backend output (2/4)

test/article_test.go

@@ -103,6 +103,9 @@ func (m *mockArticleRepo) FindPage(filters article.Filters) (article.PageResult,
 	sort.Slice(matching, func(i, j int) bool { return articleSortsBefore(matching[i], matching[j], filters.Sort) })
 	start := min((filters.Page-1)*filters.Size, len(matching))
 	end := min(start+filters.Size, len(matching))
+	if filters.Unpaged {
+		start, end = 0, len(matching)
+	}
 	items := make([]article.Article, 0)
 	for _, a := range matching[start:end] {
 		items = append(items, m.withAuthors(a))
@@ -143,6 +146,8 @@ func articleSortsBefore(left, right article.Article, order article.Sort) bool {
 		}
 	case article.SortByCreatedAt:
 		comparison = left.CreatedAt.Compare(right.CreatedAt)
+	case article.SortByID:
+		comparison = int(left.ID) - int(right.ID)
 	default:
 		comparison = left.UpdatedAt.Compare(right.UpdatedAt)
 	}