public function testReadWriteTwice()
    {
        $this->usedSaveHandlers[] = $saveHandler = new DbTableGateway($this->tableGateway, $this->options);
        $saveHandler->open('savepath', 'sessionname');

        $id = '242';

        $this->assertTrue($saveHandler->write($id, serialize($this->testArray)));

        $this->assertEquals($this->testArray, unserialize($saveHandler->read($id)));

        $this->assertTrue($saveHandler->write($id, serialize($this->testArray)));

        $this->assertEquals($this->testArray, unserialize($saveHandler->read($id)));
    }