nordisk/skade

vendor/iceberg-arrow59/src/test_utils/delete_vector.rs

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//! Fixtures for tests that need encoded deletion vectors.

use roaring::RoaringTreemap;

/// Encodes a `deletion-vector-v1` Puffin blob for the given positions, matching the framing in
/// [`DeleteVector::deserialize`](crate::delete_vector::DeleteVector::deserialize).
pub(crate) fn encode_dv_blob(positions: impl IntoIterator<Item = u64>) -> Vec<u8> {
    let mut bitmap = RoaringTreemap::new();
    for pos in positions {
        bitmap.insert(pos);
    }
    let mut vector = Vec::new();
    bitmap.serialize_into(&mut vector).unwrap();
    crate::delete_vector::frame_dv_blob(&vector)
}