Edit: ApcCacheTest.php

Editing: ApcCacheTest.php

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<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Validator\Tests\Mapping\Cache;

use Symfony\Component\Validator\Mapping\Cache\ApcCache;

class ApcCacheTest extends \PHPUnit_Framework_TestCase
{
    protected function setUp()
    {
        if (!extension_loaded('apc') || !ini_get('apc.enable_cli')) {
            $this->markTestSkipped('APC is not loaded.');
        }
    }

public function testWrite()
    {
        $meta = $this->getMockBuilder('Symfony\\Component\\Validator\\Mapping\\ClassMetadata')
            ->disableOriginalConstructor()
            ->setMethods(array('getClassName'))
            ->getMock();

$meta->expects($this->once())
            ->method('getClassName')
            ->will($this->returnValue('bar'));

$cache = new ApcCache('foo');
        $cache->write($meta);

$this->assertInstanceOf('Symfony\\Component\\Validator\\Mapping\\ClassMetadata', apc_fetch('foobar'), '->write() stores metadata in APC');
    }

public function testHas()
    {
        $meta = $this->getMockBuilder('Symfony\\Component\\Validator\\Mapping\\ClassMetadata')
            ->disableOriginalConstructor()
            ->setMethods(array('getClassName'))
            ->getMock();

$meta->expects($this->once())
            ->method('getClassName')
            ->will($this->returnValue('bar'));

apc_delete('foobar');

$cache = new ApcCache('foo');
        $this->assertFalse($cache->has('bar'), '->has() returns false when there is no entry');

$cache->write($meta);
        $this->assertTrue($cache->has('bar'), '->has() returns true when the is an entry');
    }

public function testRead()
    {
        $meta = $this->getMockBuilder('Symfony\\Component\\Validator\\Mapping\\ClassMetadata')
            ->disableOriginalConstructor()
            ->setMethods(array('getClassName'))
            ->getMock();

$meta->expects($this->once())
            ->method('getClassName')
            ->will($this->returnValue('bar'));

$cache = new ApcCache('foo');
        $cache->write($meta);

$this->assertInstanceOf('Symfony\\Component\\Validator\\Mapping\\ClassMetadata', $cache->read('bar'), '->read() returns metadata');
    }
}