<?php
/**
*
* @package testing
* @copyright (c) 2010 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_lock_db_test extends phpbb_database_test_case
{
	private $db;
	private $config;
	private $lock;

	public function getDataSet()
	{
		return $this->createXMLDataSet(dirname(__FILE__).'/fixtures/config.xml');
	}

	public function setUp()
	{
		global $db, $config;

		$db = $this->db = $this->new_dbal();
		$config = $this->config = new phpbb_config(array('rand_seed' => '', 'rand_seed_last_update' => '0'));
		set_config(null, null, null, $this->config);
		$this->lock = new phpbb_lock_db('test_lock', $this->config, $this->db);
	}

	public function test_new_lock()
	{
		$this->assertFalse($this->lock->owns_lock());

		$this->assertTrue($this->lock->acquire());
		$this->assertTrue($this->lock->owns_lock());
		$this->assertTrue(isset($this->config['test_lock']), 'Lock was created');

		$lock2 = new phpbb_lock_db('test_lock', $this->config, $this->db);
		$this->assertFalse($lock2->acquire());
		$this->assertFalse($lock2->owns_lock());

		$this->lock->release();
		$this->assertFalse($this->lock->owns_lock());
		$this->assertEquals('0', $this->config['test_lock'], 'Lock was released');
	}

	public function test_expire_lock()
	{
		$lock = new phpbb_lock_db('foo_lock', $this->config, $this->db);
		$this->assertTrue($lock->acquire());
	}

	public function test_double_lock()
	{
		$this->assertFalse($this->lock->owns_lock());

		$this->assertTrue($this->lock->acquire());
		$this->assertTrue($this->lock->owns_lock());
		$this->assertTrue(isset($this->config['test_lock']), 'Lock was created');

		$value = $this->config['test_lock'];

		$this->assertFalse($this->lock->acquire());
		$this->assertTrue($this->lock->owns_lock());
		$this->assertEquals($value, $this->config['test_lock'], 'Second lock failed');

		$this->lock->release();
		$this->assertFalse($this->lock->owns_lock());
		$this->assertEquals('0', $this->config['test_lock'], 'Lock was released');
	}

	public function test_double_unlock()
	{
		$this->assertTrue($this->lock->acquire());
		$this->assertTrue($this->lock->owns_lock());
		$this->assertFalse(empty($this->config['test_lock']), 'First lock is acquired');

		$this->lock->release();
		$this->assertFalse($this->lock->owns_lock());
		$this->assertEquals('0', $this->config['test_lock'], 'First lock is released');

		$lock2 = new phpbb_lock_db('test_lock', $this->config, $this->db);
		$this->assertTrue($lock2->acquire());
		$this->assertTrue($lock2->owns_lock());
		$this->assertFalse(empty($this->config['test_lock']), 'Second lock is acquired');

		$this->lock->release();
		$this->assertTrue($lock2->owns_lock());
		$this->assertFalse(empty($this->config['test_lock']), 'Double release of first lock is ignored');

		$lock2->release();
		$this->assertEquals('0', $this->config['test_lock'], 'Second lock is released');
	}
}