public function it_creates_row_iterators(RowIteratorFactory $rowIteratorFactory, RowIterator $rowIterator1, RowIterator $rowIterator2)
 {
     $rowIteratorFactory->create('path', ['options1'])->willReturn($rowIterator1);
     $rowIteratorFactory->create('path', ['options2'])->willReturn($rowIterator2);
     $this->createRowIterator(0, ['options1'])->shouldReturn($rowIterator1);
     $this->createRowIterator(1, ['options2'])->shouldReturn($rowIterator2);
 }
 /**
  * {@inheritdoc}
  */
 public function createRowIterator($worksheetIndex, array $options = [])
 {
     return $this->rowIteratorFactory->create($this->path, $options);
 }