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<?php
class ReplicatedBagOStuffTest extends \MediaWikiUnitTestCase {
/** @var HashBagOStuff */
private $writeCache;
/** @var HashBagOStuff */
private $readCache;
/** @var ReplicatedBagOStuff */
private $cache;
protected function setUp() : void {
parent::setUp();
$this->writeCache = new HashBagOStuff();
$this->readCache = new HashBagOStuff();
$this->cache = new ReplicatedBagOStuff( [
'writeFactory' => $this->writeCache,
'readFactory' => $this->readCache,
] );
}
/**
* @covers ReplicatedBagOStuff::set
*/
public function testSet() {
$key = 'a key';
$value = 'a value';
$this->cache->set( $key, $value );
// Write to master.
$this->assertEquals( $value, $this->writeCache->get( $key ) );
// Don't write to replica. Replication is deferred to backend.
$this->assertFalse( $this->readCache->get( $key ) );
}
/**
* @covers ReplicatedBagOStuff::get
*/
public function testGet() {
$key = 'a key';
$write = 'one value';
$this->writeCache->set( $key, $write );
$read = 'another value';
$this->readCache->set( $key, $read );
// Read from replica.
$this->assertEquals( $read, $this->cache->get( $key ) );
}
/**
* @covers ReplicatedBagOStuff::get
*/
public function testGetAbsent() {
$key = 'a key';
$value = 'a value';
$this->writeCache->set( $key, $value );
// Don't read from master. No failover if value is absent.
$this->assertFalse( $this->cache->get( $key ) );
}
}
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