Cachearium\CacheKey::getId PHP Method

    public function getId()
    {
        return $this->id;
    }

 public function testCacheKey()
 {
     $ck = new CacheKey('base', 'id', 'sub');
     $this->assertEquals('base', $ck->getBase());
     $this->assertEquals('id', $ck->getId());
     $this->assertEquals('sub', $ck->getSub());
     $ck = new CacheKey(null, null);
     $ck->setBase('base')->setId('id')->setSub('sub');
     $this->assertEquals('base', $ck->getBase());
     $this->assertEquals('id', $ck->getId());
     $this->assertEquals('sub', $ck->getSub());
     $this->assertNotNull($ck->getHash());
 }