old_contents: import sys
  
  import pytest
  
  from aioworkers.core.plugin import ProxyPlugin, search_plugins
  
  
  class plugin:
      configs = ('a',)
  
  
  @pytest.mark.parametrize('name', [__name__, 'tests'])
  def test_proxy_plugin(name, mocker):
      del sys.modules[name]
      assert name not in sys.modules
      p, = search_plugins(name)
      assert isinstance(p, ProxyPlugin)
      assert p.get_config() == {}
      p.add_arguments(mocker.Mock())
      p.parse_known_args()
  
new_contents: import argparse
  import sys
  
  import pytest
  
  from aioworkers.core.plugin import ProxyPlugin, search_plugins
  
  
  class plugin:
      configs = ('a',)
  
  
  @pytest.mark.parametrize('name', [__name__, 'tests'])
  def test_proxy_plugin(name, mocker):
      del sys.modules[name]
      assert name not in sys.modules
      p, = search_plugins(name)
      assert isinstance(p, ProxyPlugin)
      assert p.get_config() == {}
      p.add_arguments(mocker.Mock())
      p.parse_known_args(args=[], namespace=argparse.Namespace())
  
subject: fix test plugin