anchor.diff:      test_jun_pandas_bad_call/1,
       test_jun_pandas_to_datetime/1,
       test_jun_pandas_read_sql/1,
  -    test_jun_pandas_read_string/1]).
  +    test_jun_pandas_read_string/1,
  +    test_jun_pandas_read_hdf/1,
  +    test_jun_pandas_to_hdf/1]).
   
   all() ->
       [test_jun_pandas_read_csv,
  
positive.code:          [<<"Debbie">>,40],[<<"Bjork">>,40],[<<"Katy">>,30]]},
      ?assertEqual(Out, Erl).
  
  test_jun_pandas_bad_call([{jun_worker, Pid}, _, {cwd, Cwd}]) ->
      Path = list_to_binary(Cwd ++ "/../../lib/jun/test/files/enoent.txt"),
      Error = jun_pandas:read_csv(Pid, Path, []),
      ?assertMatch({error, {_, _}}, Error).
  
  test_jun_pandas_to_datetime([{jun_worker, Pid}, {path, Path}, _]) ->
      {ok, {?DATAFRAME, DataFrame}} = jun_pandas:read_csv(Pid, Path, []),
      {ok, {?SERIES, Series}} = jun_pandas:single_selection(Pid, DataFrame, <<"age">>, []),
      {ok, SeriesDt} = jun_pandas:to_datetime(Pid, Series, []),
  
negative.code:      test_jun_pandas_bad_call,
       test_jun_pandas_to_datetime,
       test_jun_pandas_read_sql,
       test_jun_pandas_read_string,
       test_jun_pandas_read_hdf,
       test_jun_pandas_to_hdf].
  
  init_per_testcase(_, _Config) ->
      % for each case start a new worker
  