/**
* @dataProvider distinctDataProvider
*/
public function testDistinct($flag, $expectedFlag)
{
$adapterMock = $this->getMock('Zend_Db_Adapter_Pdo_Mysql', ['select'], [], '', false);
$selectMock = $this->getMock('Magento\\Framework\\DB\\Select', ['distinct'], ['adapter' => $adapterMock]);
$adapterMock->expects($this->once())->method('select')->will($this->returnValue($selectMock));
$selectMock->expects($this->once())->method('distinct')->with($expectedFlag);
$this->collection->setConnection($adapterMock);
$this->collection->distinct($flag);
}