def METHOD_NAME(self):
    """Test that an ImageSeries written without unit is read with unit set to the default value."""
    f = Path(__file__).parent / '1.5.1_timeseries_no_unit.nwb'
    with NWBHDF5IO(str(f), 'r') as io:
        read_nwbfile = io.read()
        self.assertEqual(read_nwbfile.acquisition['test_timeseries'].unit, TimeSeries.DEFAULT_UNIT)