content: import pytest
  
  
  class CustomIterable:
      def __init__(self, objs):
          self._objs = objs
  
      def __iter__(self):
          for obj in self._objs:
              yield obj
  
  
  @pytest.fixture(params=[list, tuple, CustomIterable],
                  ids=['list', 'tuple', 'custom'])
  def multicls(request):
      return request.param
  