def METHOD_NAME(mocker, freqai_conf):
    freqai, unfiltered_dataframe = make_unfiltered_dataframe(mocker, freqai_conf)
    freqai.dk.find_features(unfiltered_dataframe)
    filtered_df, labels = freqai.dk.filter_features(
            unfiltered_dataframe,
            freqai.dk.training_features_list,
            freqai.dk.label_list,
            training_filter=True,
    )
    assert len(filtered_df.columns) == 14