CacheDataTest::testCallback PHP Method

    public function testCallback()
    {
        $cache = Cachearium\Backend\CacheRAM::singleton();
        $ck1 = new CacheKey('callback', 1, 'sub');
        $ck2 = new CacheKey('callback', 2, 'sub');
        $cd1 = new CacheData($ck1, null);
        $cd2 = new CacheData($ck2, null);
        $cd2->appendCallback('callbackDataTester');
        $cd1->appendData('something');
        $cd1->appendRecursionData($cd2);
        $this->assertTrue($cache->storeData($cd2));
        $this->assertTrue($cache->storeData($cd1));
        $this->assertNotFalse($cache->getData($ck2));
        $this->assertNotFalse($cache->getData($ck1));
        $this->assertEquals('something' . CALLBACKDATATESTERVALUE, $cd1->stringify($cache));
    }