public function testShouldGetCacheBackendThroughGetter()
{
$object = new Memcached(['host' => TEST_MC_HOST]);
$reflectedMethod = new ReflectionMethod(get_class($object), 'getCacheBackend');
$reflectedMethod->setAccessible(true);
$this->assertInstanceOf(Libmemcached::class, $reflectedMethod->invoke($object));
}