old_contents: from netCDF4 import Dataset
  import tempfile
  
  class MockNetCDF(Dataset):
      """
      Wrapper object around NetCDF Dataset to write data only to memory.
      """
  
      def __init__(self):
          # taken from test/tst_diskless.py NetCDF library
          # even though we aren't persisting data to disk, the constructor
          # requires a filename not currently in use by another Dataset object..
          tmp_filename = tempfile.NamedTemporaryFile(suffix='.nc',
                                                     delete=True).name
          super(MockNetCDF, self).__init__(tmp_filename, 'w', diskless=True,
                                           persist=False)
  
  
  class MockTimeSeries(MockNetCDF):
      """
      Mock time series with time dimension and time, lon, lat, and depth
      variables defined
      """
      def __init__(self):
          super(MockTimeSeries, self).__init__()
          self.createDimension('time', 500)
          for v in ('time', 'lon', 'lat', 'depth'):
              self.createVariable(v, 'd', ('time',))
  
  
  class MockVariable(object):
      '''
      For mocking a dataset variable. Constructor optionally takes a NetCDF
      variable, the NetCDF attributes of which will be copied over to this
      object.
      '''
  
      def __init__(self, copy_var=None):
          if copy_var is not None:
              for att in copy_var.ncattrs():
                  setattr(self, att, getattr(copy_var, att))
  
new_contents: from netCDF4 import Dataset
  import tempfile
  
  class MockNetCDF(Dataset):
      """
      Wrapper object around NetCDF Dataset to write data only to memory.
      """
  
      def __init__(self):
          # taken from test/tst_diskless.py NetCDF library
          # even though we aren't persisting data to disk, the constructor
          # requires a filename not currently in use by another Dataset object..
          tmp_filename = tempfile.NamedTemporaryFile(suffix='.nc',
                                                     delete=True).name
          super(MockNetCDF, self).__init__(tmp_filename, 'w', diskless=True,
                                           persist=False)
  
  
  class MockTimeSeries(MockNetCDF):
      """
      Mock time series with time dimension and time, lon, lat, and depth
      variables defined
      """
      def __init__(self):
          super(MockTimeSeries, self).__init__()
          self.createDimension('time', 500)
          for v in ('time', 'lon', 'lat', 'depth'):
              self.createVariable(v, 'd', ('time',))
  
  
  class MockVariable(object):
      '''
      For mocking a dataset variable. Constructor optionally takes a NetCDF
      variable, the NetCDF attributes of which will be copied over to this
      object.
      '''
  
      def __init__(self, copy_var=None):
          if copy_var is not None:
              self.name = copy_var.name
              self.dimensions = copy_var.dimensions
              for att in copy_var.ncattrs():
                  setattr(self, att, getattr(copy_var, att))
  
subject: Add name and dimensions attributes to MockVariable class