process() public method

Execute processor
public process ( array $items ) : array
$items array
return array
 public function testProcess()
 {
     $this->items[0] = new Item();
     $this->items[1] = new Item();
     $this->items[2] = new Item();
     $this->items[3] = new Item();
     $date0 = new DateTime();
     $date1 = new DateTime();
     $date0->modify('-1 day');
     $this->items[0]->setDate($date0);
     $this->items[1]->setDate($date1);
     $this->items[2]->setDate($date0);
     $this->items = $this->processor->process($this->items);
     $this->assertEquals($this->items[0]->getDate(), $date1);
 }