<?php
/**
*
* @package testing
* @copyright (c) 2012 phpBB Group
* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
*
*/

require_once dirname(__FILE__) . '/../../phpBB/includes/functions.php';

class phpbb_update_rows_avoiding_duplicates_test extends phpbb_database_test_case
{
	public function getDataSet()
	{
		return $this->createXMLDataSet(dirname(__FILE__).'/fixtures/duplicates.xml');
	}

	public static function fixture_data()
	{
		return array(
			// description
			// from array
			// to value
			// expected count with to value post update
			array(
				'trivial',
				array(1),
				10,
				1,
			),
			array(
				'no conflict',
				array(2),
				3,
				2,
			),
			array(
				'conflict',
				array(4),
				5,
				1,
			),
			array(
				'conflict and no conflict',
				array(6),
				7,
				2,
			),
		);
	}

	/**
	* @dataProvider fixture_data
	*/
	public function test_trivial_update($description, $from, $to, $expected_result_count)
	{
		$db = $this->new_dbal();

		phpbb_update_rows_avoiding_duplicates($db, TOPICS_WATCH_TABLE, 'topic_id', $from, $to);

		$sql = 'SELECT count(*) AS count
			FROM ' . TOPICS_WATCH_TABLE . '
			WHERE topic_id = ' . $db->sql_escape($to);
		$result = $db->sql_query($sql);
		$result_count = $db->sql_fetchfield('count');
		$db->sql_freeresult($result);

		$this->assertEquals($expected_result_count, $result_count);
	}
}