text: import torch
  
  from . import common_utils
  from .functional_impl import Lfilter
  
  
  @common_utils.skipIfNoCuda
  class TestLFilterFloat32(Lfilter, common_utils.PytorchTestCase):
      dtype = torch.float32
      device = torch.device('cuda')
  
  
  @common_utils.skipIfNoCuda
  class TestLFilterFloat64(Lfilter, common_utils.PytorchTestCase):
      dtype = torch.float64
      device = torch.device('cuda')
  