[ticket/11608] split search tests into separate files

Tests for each search backend are into their own separate files.
These separate classes inherit from a common search test case class.

PHPBB3-11608

tests/functional/search_postgres_test.php

@@ -0,0 +1,24 @@
+<?php
+/**
+ *
+ * @package testing
+ * @copyright (c) 2013 phpBB Group
+ * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+ *
+ */
+
+require_once dirname(__FILE__) . '/search_test.php';
+
+/**
+* @group functional
+*/
+class phpbb_functional_search_postgres_test extends phpbb_functional_search_test
+{
+	protected $search_backend;
+
+	public function setUp()
+	{
+		parent::setUp();
+		$this->search_backend = 'phpbb_search_fulltext_postgres';
+	}
+}