[ticket/14838] Add simple test for fetch_attachments method

PHPBB3-14838

tests/feed/attachments_mock_feed.php

@@ -0,0 +1,31 @@
+<?php
+/**
+ *
+ * This file is part of the phpBB Forum Software package.
+ *
+ * @copyright (c) phpBB Limited <https://www.phpbb.com>
+ * @license GNU General Public License, version 2 (GPL-2.0)
+ *
+ * For full copyright and license information, please see
+ * the docs/CREDITS.txt file.
+ *
+ */
+
+/**
+ * Board wide feed (aka overall feed)
+ *
+ * This will give you the newest {$this->num_items} posts
+ * from the whole board.
+ */
+class phpbb_feed_attachments_mock_feed extends \phpbb\feed\attachments_base
+{
+	public $topic_ids = array();
+	public $post_ids = array();
+
+	function get_sql()
+	{
+		parent::fetch_attachments($this->post_ids, $this->topic_ids);
+
+		return true;
+	}
+}