CacheTest::testCacheMemoryFlush PHP Method

    public function testCacheMemoryFlush()
    {
        $frontCache = new Phalcon\Cache\Frontend\Data(array('lifetime' => 10));
        // Memory
        $cache = new Phalcon\Cache\Backend\Memory($frontCache);
        $cache->save('data', "1");
        $cache->save('data2', "2");
        $this->assertTrue($cache->flush());
        $this->assertFalse($cache->exists('data'));
        $this->assertFalse($cache->exists('data2'));
    }