CacheTest::testCacheXcacheFlush PHP Method

    public function testCacheXcacheFlush()
    {
        $frontCache = new Phalcon\Cache\Frontend\Data(array('lifetime' => 10));
        // Xcache
        $ready = $this->_prepareXcache();
        if (!$ready) {
            return false;
        }
        $cache = new Phalcon\Cache\Backend\Xcache($frontCache, array('statsKey' => '_PHCM'));
        $cache->save('data', "1");
        $cache->save('data2', "2");
        $this->assertTrue($cache->flush());
        $this->assertFalse($cache->exists('data'));
        $this->assertFalse($cache->exists('data2'));
    }