Cache\Adapter\Common\Tests\CacheItemTest::testGetExpirationDate PHP Метод

    public function testGetExpirationDate()
    {
        $item = new CacheItem('test_key');
        $this->assertNull($item->getExpirationDate());
        $date = new \DateTime();
        $ref = new \ReflectionObject($item);
        $prop = $ref->getProperty('expirationDate');
        $prop->setAccessible(true);
        $prop->setValue($item, $date);
        $this->assertEquals($date, $item->getExpirationDate());
    }