Function test_fragments_parquet_subset_invalid

python/pyarrow/tests/test_dataset.py:1880–1889

(tempdir)

@pytest.mark.parquet
def test_fragments_parquet_subset_invalid(tempdir):
    _, dataset = _create_dataset_for_fragments(tempdir, chunk_size=1)
    fragment = list(dataset.get_fragments())[0]

    # passing none or both of filter / row_group_ids
    with pytest.raises(ValueError):
        fragment.subset(ds.field("f1") >= 1, row_group_ids=[1, 2])

    with pytest.raises(ValueError):
        fragment.subset()


@pytest.mark.parquet