[ticket/17528] Add test for adding autoincrement column

PHPBB-17528

tests/dbal/migration/schema_add_autoincrement.php

@@ -0,0 +1,43 @@
+<?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.
+*
+*/
+
+class schema_add_autoincrement extends \phpbb\db\migration\migration
+{
+	function update_schema()
+	{
+		return [
+			'add_tables' => [
+				$this->table_prefix . 'noid' => [
+					'COLUMNS' => [
+						'text' => ['VCHAR:50', ''],
+					],
+				],
+			],
+
+			'add_columns' => [
+				$this->table_prefix . 'noid' => [
+					'id' => ['UINT:3', null, 'auto_increment'],
+				],
+			],
+		];
+	}
+
+	function revert_schema()
+	{
+		return [
+			'drop_tables'	=> [
+				$this->table_prefix . 'noid',
+			],
+		];
+	}
+}