def test_prepare_w_levels_data_to_both(self):
observations = [{'obsid': 'obs1', 'date_time': datestring_to_date('2016-01-01 00:00'), 'value': '123,4', 'level_masl': '567'},
{'obsid': 'obs1', 'date_time': datestring_to_date('2016-01-01 00:02'), 'meas': '897'}]
test_string = create_test_string(FieldloggerImport.prepare_w_levels_data(observations))
reference_string = '[[obsid, date_time, meas, h_toc, level_masl, comment], [obs1, 2016-01-01 00:00:00, , , 567, ], [obs1, 2016-01-01 00:02:00, 897, , , ]]'
print(test_string)
assert test_string == reference_string
