public function testGetResourceStorageModel()
{
$dbModelMock = $this->getMockBuilder('Magento\\MediaStorage\\Model\\File\\Storage\\Database')->disableOriginalConstructor()->getMock();
$this->dbStorageFactoryMock->expects($this->once())->method('create')->will($this->returnValue($dbModelMock));
$resourceModelMock = $this->getMockBuilder('Magento\\Framework\\Model\\ResourceModel\\Db\\AbstractDb')->disableOriginalConstructor()->setMethods(['__wakeup'])->getMockForAbstractClass();
$dbModelMock->expects($this->once())->method('getResource')->will($this->returnValue($resourceModelMock));
$this->assertSame($resourceModelMock, $this->helper->getResourceStorageModel());
$this->assertSame($resourceModelMock, $this->helper->getResourceStorageModel());
}