def test_predict_pdf_works(predictor, test_pdf):
    predictions, metadata = predictor.predict_pdf(test_pdf)
    assert list(predictions) == [{'class': 'formula',
                                  'probabilities': {'formula': 1.0, 'other': 1.576210689757148e-17,
                                                    'signature': 5.364939675629517e-24,
                                                    'logo': 8.815339177836606e-25}}]
    # FIXME strange output for metadata, with '\n's in the dict
    metadata = list(metadata)
    metadata = dict(**metadata[0])
    metadata.pop("document_filename")  # temp filename cannot be tested
    assert metadata == {'px_width': 389.0, 'px_height': 389.0, 'width': 194.49999000000003, 'height': 194.49998999999997, 'x1': 320.861, 'x2': 515.36099, 'y1': 347.699, 'y2': 542.19899, 'page_width': 595.2800000000001, 'page_height': 841.89, 'page_rotation': 0, 'page_idx': 1, 'n_pages': 3}