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<?php
/**
* Matomo - free/libre analytics platform
*
* @link https://matomo.org
* @license http://www.gnu.org/licenses/lgpl-3.0.html LGPL v3 or later
*/
namespace Tests\Matomo\Cache\Backend;
use Matomo\Cache\Backend\ArrayCache;
use Matomo\Cache\Backend\Chained;
use Matomo\Cache\Backend\NullCache;
use PHPUnit\Framework\TestCase;
/**
* @covers \Matomo\Cache\Backend\Chained
*/
class ChainedTest extends TestCase
{
public function test_constructor_getbackends_shouldMakeSureToHaveProperIndex()
{
$arrayCache = new ArrayCache();
$nullCache = new NullCache();
$backends = array(0 => $arrayCache, 2 => $nullCache);
$cache = $this->createChainedCache($backends);
$result = $cache->getBackends();
$this->assertEquals(array($arrayCache, $nullCache), $result);
}
public function test_doFetch_shouldPopulateOtherCaches()
{
$cacheId = 'myid';
$cacheValue = 'mytest';
$arrayCache1 = new ArrayCache();
$arrayCache2 = new ArrayCache();
$arrayCache2->doSave($cacheId, $cacheValue);
$arrayCache3 = new ArrayCache();
$cache = $this->createChainedCache(array($arrayCache1, $arrayCache2, $arrayCache3));
$this->assertEquals($cacheValue, $cache->doFetch($cacheId)); // should find the value from second cache
// should populate previous cache
$this->assertEquals($cacheValue, $arrayCache1->doFetch($cacheId));
// should not populate slower cache
$this->assertFalse($arrayCache3->doContains('myid'));
}
private function createChainedCache($backends)
{
return new Chained($backends);
}
}
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