/**
* @test
*/
public function itShouldWriteFuncAsColumns()
{
$select = new Select('user');
$select->setFunctionAsColumn('MAX', ['user_id'], 'max_value');
$result = $this->columnWriter->writeFuncAsColumns($select);
$this->assertInstanceOf('NilPortugues\\Sql\\QueryBuilder\\Syntax\\Column', $result[0]);
}