text: import pytest
  from sphinxcontrib.pylit import utils
  
  test_data = [
      [4,5],
      [5,6],
  ]
  
  @pytest.fixture(params = test_data)
  def gen_data(request):
      return request.param
  
  def test_inc(gen_data):
      v1 = gen_data[0]
      v2 = gen_data[1]
      assert utils.incr(v1) == v2
  
  