def METHOD_NAME(self):
    # Test based on test below to get a dummy dataset
    ts = '20161124_162604'
    a = ba.BaseDataAnalysis()
    a.proc_data_dict['quantities_of_interest'] = {'a': 5}
    a.timestamps = [ts]
    a.save_quantities_of_interest()
    fn = a_tools.measurement_filename(a_tools.data_from_time(ts))
    with h5py.File(fn, 'r') as file:
        saved_val = float(file['Analysis']['quantities_of_interest'].attrs['a'])
    assert saved_val == 5