old_contents: # test_discovery.py
  #
  # Copyright 2014 BitVault.
  
  
  from __future__ import print_function
  
  import pytest
  
  from patchboard import Patchboard
  
  from patchboard.tests.fixtures import pb
  pytest.mark.usefixtures(pb)
  
  
  def test_discover(pb):
      assert isinstance(pb, Patchboard)
  
new_contents: # test_discovery.py
  #
  # Copyright 2014 BitVault.
  
  
  from __future__ import print_function
  
  import pytest
  
  from patchboard import Patchboard
  
  from patchboard.tests.fixtures import mock_pb, net_pb, pb
  pytest.mark.usefixtures(mock_pb, net_pb, pb)
  
  
  def test_discover(pb):
      assert isinstance(pb, Patchboard)
  
subject: Update test_discovery.py