old_contents: import os
  import tempfile
  import shutil
  import tzlocal
  import pytest
  from ..mongoquery.mds import MDS
  
  
  @pytest.fixture(params=[1], scope='function')
  def mds_all(request):
      '''Provide a function level scoped FileStore instance talking to
      temporary database on localhost:27017 with both v0 and v1.
  
      '''
      ver = request.param
      tempdirname = tempfile.mkdtemp()
      mds = MDS({'directory': tempdirname,
                 'timezone': tzlocal.get_localzone().zone}, version=ver)
      filenames = ['run_starts.json', 'run_stops.json', 'event_descriptors.json',
                   'events.json']
      for fn in filenames:
          with open(os.path.join(tempdirname, fn), 'w') as f:
              f.write('[]')
  
      def delete_dm():
          shutil.rmtree(tempdirname)
  
      request.addfinalizer(delete_dm)
  
      return mds
  
new_contents: import os
  import tempfile
  import shutil
  import tzlocal
  import pytest
  import portable_mds.mongoquery.mds
  import portable_mds.sqlite.mds
  
  variations = [portable_mds.mongoquery.mds,
                portable_mds.sqlite.mds]
  
  @pytest.fixture(params=variations, scope='function')
  def mds_all(request):
      '''Provide a function level scoped FileStore instance talking to
      temporary database on localhost:27017 with both v0 and v1.
  
      '''
      tempdirname = tempfile.mkdtemp()
      mds = request.param.MDS({'directory': tempdirname,
                 'timezone': tzlocal.get_localzone().zone}, version=1)
      filenames = ['run_starts.json', 'run_stops.json', 'event_descriptors.json',
                   'events.json']
      for fn in filenames:
          with open(os.path.join(tempdirname, fn), 'w') as f:
              f.write('[]')
  
      def delete_dm():
          shutil.rmtree(tempdirname)
  
      request.addfinalizer(delete_dm)
  
      return mds
  
subject: Test sqlite and mongoquery variations.