old_contents: # pylint: disable=missing-docstring
  import os
  import shutil
  
  from django.conf import settings
  from django.contrib.auth import get_user_model
  from django.test import TestCase
  
  from resolwe.flow.engine import manager
  from resolwe.flow.models import Data, Tool
  
  
  class ManagerTest(TestCase):
      def setUp(self):
          u = get_user_model().objects.create_superuser('test', 'test@genialis.com', 'test')
          t = Tool(slug='test-processor',
                   name='Test Processor',
                   contributor=u,
                   type='data:test',
                   version=1)
          t.save()
  
          d = Data(slug='test-data',
                   name='Test Data',
                   contributor=u,
                   tool=t)
          d.save()
  
          shutil.rmtree(settings.FLOW['BACKEND']['DATA_PATH'])
          os.makedirs(settings.FLOW['BACKEND']['DATA_PATH'])
  
      def test_manager(self):
          manager.communicate()
  
new_contents: # pylint: disable=missing-docstring
  import os
  import shutil
  
  from django.conf import settings
  from django.contrib.auth import get_user_model
  from django.test import TestCase
  
  from resolwe.flow.engine import manager
  from resolwe.flow.models import Data, Tool
  
  
  class ManagerTest(TestCase):
      def setUp(self):
          u = get_user_model().objects.create_superuser('test', 'test@genialis.com', 'test')
          t = Tool(slug='test-processor',
                   name='Test Processor',
                   contributor=u,
                   type='data:test',
                   version=1)
          t.save()
  
          d = Data(slug='test-data',
                   name='Test Data',
                   contributor=u,
                   tool=t)
          d.save()
  
          data_path = settings.FLOW['BACKEND']['DATA_PATH']
  
          if os.path.exists(data_path):
              shutil.rmtree(data_path)
  
          os.makedirs(data_path)
  
      def test_manager(self):
          manager.communicate()
  
subject: Fix error if no data path