wiki.techinc.nl/tests/phpunit/includes/objectcache/MultiWriteBagOStuffTest.php

<?php

/**
 * @group Database
 */
class MultiWriteBagOStuffTest extends MediaWikiTestCase {
	/** @var HashBagOStuff */
	private $cache1;
	/** @var HashBagOStuff */
	private $cache2;
	/** @var MultiWriteBagOStuff */
	private $cache;

	protected function setUp() {
		parent::setUp();

		$this->cache1 = new HashBagOStuff();
		$this->cache2 = new HashBagOStuff();
		$this->cache = new MultiWriteBagOStuff( array(
			'caches' => array( $this->cache1, $this->cache2 ),
			'replication' => 'async',
			'asyncHandler' => 'DeferredUpdates::addCallableUpdate'
		) );
	}

	public function testSetImmediate() {
		$key = wfRandomString();
		$value = wfRandomString();
		$this->cache->set( $key, $value );

		// Set in tier 1
		$this->assertEquals( $value, $this->cache1->get( $key ), 'Written to tier 1' );
		// Set in tier 2
		$this->assertEquals( $value, $this->cache2->get( $key ), 'Written to tier 2' );
	}

	public function testSetDelayed() {
		$key = wfRandomString();
		$value = wfRandomString();

		// XXX: DeferredUpdates bound to transactions in CLI mode
		$dbw = wfGetDB( DB_MASTER );
		$dbw->begin();
		$this->cache->set( $key, $value );

		// Set in tier 1
		$this->assertEquals( $value, $this->cache1->get( $key ), 'Written to tier 1' );
		// Not yet set in tier 2
		$this->assertEquals( false, $this->cache2->get( $key ), 'Not written to tier 2' );

		$dbw->commit();

		// Set in tier 2
		$this->assertEquals( $value, $this->cache2->get( $key ), 'Written to tier 2' );
	}
}