| 1 | use onestore::{ |
| 2 | Arena, ExGuid, RevisionIndex, Section, Store, |
| 3 | op::{Edit, Op, PageOp}, |
| 4 | }; |
| 5 | |
| 6 | /// `source` with revisions of `space` appended until its chain is 512 deep, so its next |
| 7 | /// revision is a checkpoint. Each retouches the text object `text`, typing a character and |
| 8 | /// removing it again. |
| 9 | pub fn pending(source: &[u8], space: ExGuid, text: ExGuid) -> Vec<u8> { |
| 10 | let depth = |image: &[u8]| { |
| 11 | let store = Store::parse(image).unwrap(); |
| 12 | let index = RevisionIndex::parse(&store).unwrap(); |
| 13 | let rid = index.spaces[&space].labels[&(ExGuid::default(), 1)]; |
| 14 | std::iter::successors(Some(rid), |id| { |
| 15 | index.spaces[&space].revisions[id].dependency |
| 16 | }) |
| 17 | .count() |
| 18 | }; |
| 19 | let arena = Arena::default(); |
| 20 | let mut section = Section::open(&arena, source.to_vec()).unwrap(); |
| 21 | let retouch = |range, with: &str| Op::Page { |
| 22 | space, |
| 23 | op: PageOp::Text { |
| 24 | text, |
| 25 | range, |
| 26 | with: with.into(), |
| 27 | }, |
| 28 | }; |
| 29 | for at in 0..512 - depth(source) as u64 { |
| 30 | let ops = vec![retouch(0..0, "x"), retouch(0..1, "")]; |
| 31 | let at = 134_000_000_000_000_000 + at * 10_000_000; |
| 32 | section.apply("Author", &Edit { at, ops }).unwrap(); |
| 33 | section.seal().unwrap().unwrap(); |
| 34 | } |
| 35 | let image = section.image(); |
| 36 | assert_eq!(depth(&image), 512); |
| 37 | image |
| 38 | } |