[ticket/14742] Add test for reverse_update_data()

PHPBB3-14742

tests/migrator/reverse_update_data_test.php

@@ -0,0 +1,56 @@
+<?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 reverse_update_data_test extends phpbb_test_case
+{
+	/** @var \phpbb\db\migration\helper */
+	protected $helper;
+
+	public function setUp()
+	{
+		parent::setUp();
+
+		$this->helper = new \phpbb\db\migration\helper();
+	}
+
+	public function update_data_provider()
+	{
+		return array(
+			array(
+				array(
+					array('config.add', array('foobar', 1)),
+					array('if', array(
+						(false === true),
+						array('permission.add', array('some_data')),
+					)),
+					array('config.remove', array('foobar')),
+					array('custom', array(array($this, 'foo_bar'))),
+					array('tool.method', array('test_data')),
+				),
+				array(
+					array('tool.reverse', array('method', 'test_data')),
+					array('config.reverse', array('remove', 'foobar')),
+					array('config.reverse', array('add', 'foobar', 1)),
+				),
+			),
+		);
+	}
+
+	/**
+	 * @dataProvider update_data_provider
+	 */
+	public function test_get_schema_steps($data_changes, $expected)
+	{
+		$this->assertEquals($expected, $this->helper->reverse_update_data($data_changes));
+	}
+}