Function remap_segment

nodedb-columnar/src/pk_index.rs:267–291

()

    #[test]
    fn remap_segment() {
        let mut idx = PkIndex::new();
        let pks: Vec<Vec<u8>> = (0..5).map(|i| encode_pk(&Value::Integer(i))).collect();
        idx.bulk_insert(0, &pks).expect("bulk insert");

        // Remap segment 0 → segment 1, shifting row indices by +10.
        // Remove row 2 (deleted during compaction).
        idx.remap_segment(0, |old_row| {
            if old_row == 2 {
                None // Deleted.
            } else {
                Some(RowLocation {
                    segment_id: 1,
                    row_index: old_row + 10,
                })
            }
        });

        assert_eq!(idx.len(), 4); // Row 2 was removed.
        let loc = idx.get(&pks[0]).expect("row 0");
        assert_eq!(loc.segment_id, 1);
        assert_eq!(loc.row_index, 10);

        assert!(idx.get(&pks[2]).is_none()); // Row 2 was deleted.
    }

    #[test]
    fn remove_segment() {