[feature/migrations] Fix if method (and create a test for it)

PHPBB3-9737

tests/dbal/migration/if.php

@@ -0,0 +1,49 @@
+<?php
+/**
+*
+* @package testing
+* @copyright (c) 2011 phpBB Group
+* @license http://opensource.org/licenses/gpl-license.php GNU Public License
+*
+*/
+
+class phpbb_dbal_migration_if extends phpbb_db_migration
+{
+	function depends_on()
+	{
+		return array();
+	}
+
+	function update_schema()
+	{
+		return array();
+	}
+
+	function update_data()
+	{
+		return array(
+			array('if', array(
+				true,
+				array('custom', array(array(&$this, 'test_true'))),
+			)),
+			array('if', array(
+				false,
+				array('custom', array(array(&$this, 'test_false'))),
+			)),
+		);
+	}
+
+	function test_true()
+	{
+		global $migrator_test_if_true_failed;
+
+		$migrator_test_if_true_failed = false;
+	}
+
+	function test_false()
+	{
+		global $migrator_test_if_false_failed;
+
+		$migrator_test_if_false_failed = true;
+	}
+}