Initial commit: ClawSync v0.1.0
8-crate pure-Rust workspace for revision-aware HDF5 sync. ## Crates - clawhdf5-onion: ClawOnion VFD — page-level versioned HDF5 storage, binary format, writer/reader, branch DAG, GC, snapshots, provenance - clawsync-core: BLAKE3, xxHash3, FastCDC (+ SIMD NEON), zstd/lz4 - clawsync-onion: IBLT sketch, Merkle tree differ, packet differ/merger, ClawSyncManifest, SyncSelector - clawsync-hdf5: dataset-level manifest, differ, patcher, wire payload reconstruction (apply_received_payloads) - clawsync-transport: TCP, QUIC (quinn 0.11/TLS 1.3), SyncPeer abstraction, length-prefixed rkyv wire protocol (21 SyncMessage variants) - clawsync-agent: OnionMemory, SyncScheduler, TcpSyncBackend, PeerCapabilities negotiation - clawsync-fs: CDC-based delta sync for any file type; FsSyncClient/Server, W=16 pipelining, atomic writes - clawsync-cli: push/pull/serve/hdf5-sync/serve-hdf5/sync/serve-fs + all local management commands; --quic on all network commands ## Key features - IBLT pre-flight: O(revision count) vs rsync's O(file size) - W=16 sliding-window push: 13–15x speedup over stop-and-wait at WAN RTT - Dataset-granular HDF5 sync: only modified datasets transferred - CDC delta for any file type: insertion-stable chunk boundaries - Full revision DAG: branch, merge, rollback, export, snapshot, GC - QUIC transport: TLS 1.3, per-message streams via quinn 0.11 ## Tests ~573 passing (default features); ~589 with --features simd-cdc ## Performance (Apple Silicon) - Reconstruct rev=100: 68 µs (target ≤ 1 ms) - BLAKE3 Rayon 1 MB: 10.3 GiB/s (target ≥ 5 GB/s) - GC 500 revisions: 20.6 µs (target ≤ 2 s) - W=16 vs W=1 at 5 ms RTT: 14.8x speedup - No-op pre-flight at 16 MB: 4 ms vs rsync 35 ms (7.8x) Co-Authored-By: Claude Sonnet 4.6 <[email protected]>
This commit is contained in:
osobh
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//! Property-based tests for `clawhdf5-onion`.
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//!
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//! These tests use `proptest` to verify invariants over arbitrary sequences of
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//! write, branch, merge, GC, and read operations, ensuring the onion format
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//! stays consistent regardless of the operation order.
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//!
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//! Invariants checked:
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//! - `head_rev` is always valid (< revision_count)
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//! - No orphan page entries (every revision index entry has accessible pages)
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//! - BLAKE3 hashes are consistent after any sequence of writes
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//! - Branch count equals unique branch IDs in revision index
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//! - GC followed by any read produces no error
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//! - Serialise → deserialise round-trip preserves all revision annotations
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//! - Merge produces a new revision on the target branch
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//! - `revision_count` is monotonically non-decreasing
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use clawhdf5_onion::branch::MergeStrategy;
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use clawhdf5_onion::format::NO_PARENT;
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use clawhdf5_onion::gc::GcPolicy;
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use clawhdf5_onion::writer::OnionFile;
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use proptest::prelude::*;
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use std::path::PathBuf;
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use tempfile::NamedTempFile;
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// ─────────────────────────────────────────────────────────────────────────────
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// Generators
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// ─────────────────────────────────────────────────────────────────────────────
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/// An operation to apply to an OnionFile during a property test.
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#[derive(Debug, Clone)]
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enum Op {
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/// Write a page at a given offset with a given fill byte.
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Write { page_offset: u32, fill: u8 },
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/// Fork a new branch named "branch-N" off main.
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Fork,
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/// Commit the current session and start fresh.
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Flush,
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}
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fn arb_op() -> impl Strategy<Value = Op> {
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prop_oneof![
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(0u32..4u32, any::<u8>()).prop_map(|(off, fill)| Op::Write {
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page_offset: off,
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fill,
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}),
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Just(Op::Fork),
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Just(Op::Flush),
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]
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}
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fn arb_ops(min: usize, max: usize) -> impl Strategy<Value = Vec<Op>> {
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proptest::collection::vec(arb_op(), min..=max)
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}
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fn arb_page_size() -> impl Strategy<Value = u32> {
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prop_oneof![Just(512u32), Just(1024), Just(4096)]
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}
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/// Create a fresh OnionFile in a temp directory.
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fn fresh_onion(page_size: u32) -> (NamedTempFile, PathBuf, OnionFile) {
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let f = NamedTempFile::new().unwrap();
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let h5 = f.path().with_extension("h5");
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std::fs::write(&h5, b"\x89HDF\r\n\x1a\n").unwrap();
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let onion = OnionFile::create(&h5, page_size).unwrap();
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(f, h5, onion)
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}
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// ─────────────────────────────────────────────────────────────────────────────
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// Helpers
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// ─────────────────────────────────────────────────────────────────────────────
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/// Apply a list of ops to an OnionFile. Returns the number of revisions committed.
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fn apply_ops(onion: &mut OnionFile, ops: &[Op]) -> u64 {
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let mut session = onion.begin_session(None).unwrap();
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let page_size = onion.page_size() as usize;
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let mut fork_count = 0usize;
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let mut has_writes = false;
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for op in ops {
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match op {
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Op::Write { page_offset, fill } => {
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let offset = (*page_offset as u64) * (page_size as u64);
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session.record_page(offset, &vec![*fill; page_size]);
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has_writes = true;
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}
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Op::Fork => {
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// Commit current session first
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if has_writes {
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onion.commit_session(session, Some("auto")).unwrap();
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has_writes = false;
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} else {
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drop(session);
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}
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// Fork a new branch
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let branch_name = format!("branch-{fork_count}");
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fork_count += 1;
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let _ = onion.create_branch(&branch_name, "main");
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// Restart session on main
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session = onion.begin_session(None).unwrap();
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}
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Op::Flush => {
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if has_writes {
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onion.commit_session(session, Some("flush")).unwrap();
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has_writes = false;
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} else {
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drop(session);
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}
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session = onion.begin_session(None).unwrap();
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}
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}
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}
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// Commit trailing session if it has writes
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if has_writes {
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onion.commit_session(session, Some("final")).unwrap();
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} else {
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drop(session);
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}
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onion.revision_count()
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}
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/// Check all invariants on an OnionFile.
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fn assert_invariants(onion: &OnionFile) {
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let revisions = onion.list_revisions();
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let rev_count = onion.revision_count();
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// 1. revision_count matches actual revision list length
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assert_eq!(
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rev_count as usize,
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revisions.len(),
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"revision_count mismatch: header={rev_count} list={}",
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revisions.len()
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);
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// 2. Revision numbers are monotonically increasing from 0
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for (i, rev) in revisions.iter().enumerate() {
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assert_eq!(
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rev.revision, i as u64,
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"non-contiguous revision at index {i}: revision={}",
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rev.revision
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);
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}
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// 3. parent_rev is either NO_PARENT or a valid earlier revision
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for rev in &revisions {
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if rev.parent_rev != NO_PARENT {
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assert!(
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rev.parent_rev < rev.revision,
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"revision {} has parent {} ≥ itself",
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rev.revision,
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rev.parent_rev
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);
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}
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}
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// 4. branch_id references are all valid
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let branch_ids: std::collections::HashSet<u32> =
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onion.list_branches().iter().map(|b| b.id).collect();
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for rev in &revisions {
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assert!(
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branch_ids.contains(&rev.branch_id),
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"revision {} references unknown branch_id {}",
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rev.revision,
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rev.branch_id
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);
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}
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// 5. blake3_hex has correct length (64 chars)
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for rev in &revisions {
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assert_eq!(
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rev.blake3_hex.len(),
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64,
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"revision {} has blake3_hex of wrong length {}",
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rev.revision,
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rev.blake3_hex.len()
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);
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assert!(
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rev.blake3_hex.chars().all(|c| c.is_ascii_hexdigit()),
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"revision {} has non-hex blake3_hex: {}",
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rev.revision,
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&rev.blake3_hex
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);
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}
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// 6. Pages are accessible for every revision
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for rev in &revisions {
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onion
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.revision_pages(rev.revision)
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.unwrap_or_else(|e| panic!("revision_pages({}) failed: {e}", rev.revision));
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}
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// 7. branch head revisions are valid
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for branch in onion.list_branches() {
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if branch.head_rev != NO_PARENT {
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assert!(
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branch.head_rev < rev_count,
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"branch {} head_rev {} >= revision_count {}",
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branch.name,
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branch.head_rev,
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rev_count
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);
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}
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}
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}
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/// Check GC-safe invariants — like `assert_invariants` but allows non-contiguous
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/// revision numbering (GC keeps original IDs) and gaps in the parent chain.
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fn assert_gc_invariants(onion: &OnionFile) {
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let revisions = onion.list_revisions();
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let rev_count = onion.revision_count();
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// 1. revision_count matches actual revision list length
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assert_eq!(
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rev_count as usize,
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revisions.len(),
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"revision_count mismatch: header={rev_count} list={}",
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revisions.len()
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);
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// 2. Revision numbers are monotonically increasing (gaps allowed after GC)
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for w in revisions.windows(2) {
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assert!(
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w[0].revision < w[1].revision,
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"revisions not sorted: {} then {}",
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w[0].revision,
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w[1].revision
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);
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}
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// 3. parent_rev is either NO_PARENT or a valid earlier revision number
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let rev_set: std::collections::HashSet<u64> = revisions.iter().map(|r| r.revision).collect();
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for rev in &revisions {
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if rev.parent_rev != NO_PARENT {
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assert!(
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rev.parent_rev < rev.revision,
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"revision {} has parent {} ≥ itself",
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rev.revision,
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rev.parent_rev
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);
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// After GC the parent may have been pruned (oldest_surviving is set to NO_PARENT
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// during consolidation), so we only check that parent < self (not that it exists).
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let _ = &rev_set; // suppress unused warning
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}
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}
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// 4. branch_id references are all valid
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let branch_ids: std::collections::HashSet<u32> =
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onion.list_branches().iter().map(|b| b.id).collect();
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for rev in &revisions {
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assert!(
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branch_ids.contains(&rev.branch_id),
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"revision {} references unknown branch_id {}",
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rev.revision,
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rev.branch_id
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);
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}
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// 5. blake3_hex has correct length (64 chars)
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for rev in &revisions {
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assert_eq!(rev.blake3_hex.len(), 64,
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"revision {} has blake3_hex of wrong length {}", rev.revision, rev.blake3_hex.len());
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}
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// 6. Pages are accessible for every revision
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for rev in &revisions {
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onion
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.revision_pages(rev.revision)
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.unwrap_or_else(|e| panic!("revision_pages({}) failed: {e}", rev.revision));
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}
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}
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// ─────────────────────────────────────────────────────────────────────────────
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// Property tests
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// ─────────────────────────────────────────────────────────────────────────────
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proptest! {
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#![proptest_config(ProptestConfig {
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cases: 300,
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max_shrink_iters: 100,
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..ProptestConfig::default()
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})]
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/// Any sequence of write ops leaves the onion in a valid state.
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#[test]
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fn prop_any_write_sequence_is_consistent(
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page_size in arb_page_size(),
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ops in arb_ops(1, 20),
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) {
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let (_f, _h5, mut onion) = fresh_onion(page_size);
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apply_ops(&mut onion, &ops);
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assert_invariants(&onion);
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}
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/// revision_count never decreases.
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#[test]
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fn prop_revision_count_monotone(ops in arb_ops(1, 15)) {
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let (_f, _h5, mut onion) = fresh_onion(4096);
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let mut prev = 0u64;
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// Apply ops in batches of 3, checking after each batch
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for chunk in ops.chunks(3) {
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apply_ops(&mut onion, chunk);
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let cur = onion.revision_count();
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prop_assert!(cur >= prev, "revision_count decreased: {prev} → {cur}");
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prev = cur;
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}
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}
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/// Every revision annotation stored is retrievable.
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#[test]
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fn prop_annotations_roundtrip(
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annotations in proptest::collection::vec(
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proptest::option::of("[a-zA-Z0-9 _-]{0,40}"),
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1..=10usize,
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)
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) {
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let (_f, _h5, mut onion) = fresh_onion(4096);
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for (i, ann) in annotations.iter().enumerate() {
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let mut s = onion.begin_session(None).unwrap();
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s.record_page(0, &vec![i as u8; 4096]);
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onion.commit_session(s, ann.as_deref()).unwrap();
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}
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let revisions = onion.list_revisions();
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for (rev_entry, expected_ann) in revisions.iter().zip(annotations.iter()) {
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prop_assert_eq!(
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&rev_entry.annotation,
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expected_ann,
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"annotation mismatch at revision {}",
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rev_entry.revision
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);
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}
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}
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/// Creating any number of branches in [0, 8] leaves list_branches consistent.
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#[test]
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fn prop_branch_count_consistent(n_branches in 0usize..=8usize) {
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let (_f, _h5, mut onion) = fresh_onion(4096);
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// Write one revision to main so fork has a valid HEAD
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let mut s = onion.begin_session(None).unwrap();
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s.record_page(0, &vec![0xAAu8; 4096]);
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onion.commit_session(s, None).unwrap();
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let mut created = 0;
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for i in 0..n_branches {
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let name = format!("branch-{i}");
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if onion.create_branch(&name, "main").is_ok() {
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created += 1;
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}
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}
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let branches = onion.list_branches();
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// +1 for main
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prop_assert_eq!(branches.len(), created + 1,
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"expected {} branches (including main), got {}", created + 1, branches.len());
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}
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/// Page data for the most recent revision of main always matches the last written fill byte.
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#[test]
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fn prop_latest_page_reflects_last_write(
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fills in proptest::collection::vec(any::<u8>(), 1..=10usize),
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) {
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let (_f, _h5, mut onion) = fresh_onion(4096);
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for &fill in &fills {
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let mut s = onion.begin_session(None).unwrap();
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s.record_page(0, &vec![fill; 4096]);
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onion.commit_session(s, None).unwrap();
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||||
}
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let head_rev = onion.revision_count() - 1;
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let pages = onion.revision_pages(head_rev).unwrap();
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let page_data = &pages[0].1;
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let expected_fill = *fills.last().unwrap();
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prop_assert!(
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page_data.iter().all(|&b| b == expected_fill),
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||||
"head page fill mismatch: expected 0x{:02x}, got first byte 0x{:02x}",
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expected_fill, page_data[0]
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||||
);
|
||||
}
|
||||
|
||||
/// BLAKE3 hex for every revision is unique (no two revisions with identical page content
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||||
/// sharing a hash — all revisions have distinct page contents due to unique fill bytes).
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||||
///
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||||
/// We write n revisions each with a distinct fill byte, then verify all blake3s differ.
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||||
#[test]
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||||
fn prop_distinct_writes_have_distinct_hashes(
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fills in proptest::collection::vec(0u8..=127u8, 2..=8usize).prop_filter(
|
||||
"fills must be unique",
|
||||
|v| {
|
||||
let s: std::collections::HashSet<u8> = v.iter().copied().collect();
|
||||
s.len() == v.len()
|
||||
}
|
||||
)
|
||||
) {
|
||||
let (_f, _h5, mut onion) = fresh_onion(4096);
|
||||
for &fill in &fills {
|
||||
let mut s = onion.begin_session(None).unwrap();
|
||||
s.record_page(0, &vec![fill; 4096]);
|
||||
onion.commit_session(s, None).unwrap();
|
||||
}
|
||||
|
||||
let hashes: Vec<_> = onion.list_revisions().into_iter().map(|r| r.blake3_hex).collect();
|
||||
let unique: std::collections::HashSet<_> = hashes.iter().collect();
|
||||
prop_assert_eq!(unique.len(), hashes.len(), "duplicate blake3 hashes found");
|
||||
}
|
||||
|
||||
/// Serialize → deserialize round-trip: all revision annotations survive.
|
||||
#[test]
|
||||
fn prop_serde_roundtrip_preserves_annotations(
|
||||
n_revisions in 1usize..=10usize,
|
||||
ann_len in 0usize..=30usize,
|
||||
) {
|
||||
let (_f, h5_path, mut onion) = fresh_onion(4096);
|
||||
for i in 0..n_revisions {
|
||||
let mut s = onion.begin_session(None).unwrap();
|
||||
s.record_page(0, &vec![i as u8 % 255; 4096]);
|
||||
let ann: String = format!("rev-{i:0>width$}", width = ann_len.min(20));
|
||||
onion.commit_session(s, Some(&ann)).unwrap();
|
||||
}
|
||||
onion.flush().unwrap();
|
||||
|
||||
// Reload from disk
|
||||
let reloaded = OnionFile::open(&h5_path).unwrap();
|
||||
let orig_revs = onion.list_revisions();
|
||||
let reloaded_revs = reloaded.list_revisions();
|
||||
|
||||
prop_assert_eq!(orig_revs.len(), reloaded_revs.len());
|
||||
for (o, r) in orig_revs.iter().zip(reloaded_revs.iter()) {
|
||||
prop_assert_eq!(&o.annotation, &r.annotation,
|
||||
"annotation mismatch at revision {}", o.revision);
|
||||
prop_assert_eq!(&o.blake3_hex, &r.blake3_hex,
|
||||
"blake3 mismatch at revision {}", o.revision);
|
||||
}
|
||||
}
|
||||
|
||||
/// After any fork, the new branch starts with the same HEAD as main.
|
||||
#[test]
|
||||
fn prop_fork_head_equals_source_head(n_writes in 1usize..=5usize) {
|
||||
let (_f, _h5, mut onion) = fresh_onion(4096);
|
||||
for i in 0..n_writes {
|
||||
let mut s = onion.begin_session(None).unwrap();
|
||||
s.record_page(0, &vec![i as u8; 4096]);
|
||||
onion.commit_session(s, None).unwrap();
|
||||
}
|
||||
|
||||
let main_head_before = onion.list_branches()
|
||||
.iter().find(|b| b.name == "main").unwrap().head_rev;
|
||||
|
||||
onion.create_branch("feat", "main").unwrap();
|
||||
|
||||
let feat_branch = onion.list_branches()
|
||||
.into_iter().find(|b| b.name == "feat").unwrap();
|
||||
|
||||
prop_assert_eq!(
|
||||
feat_branch.fork_rev, main_head_before,
|
||||
"fork_rev should equal main HEAD at fork time"
|
||||
);
|
||||
}
|
||||
|
||||
/// Merging branch into main with LatestWins always produces at least one new revision.
|
||||
#[test]
|
||||
fn prop_merge_latest_wins_produces_new_revision(
|
||||
n_main in 1usize..=4usize,
|
||||
n_feat in 1usize..=4usize,
|
||||
) {
|
||||
let (_f, _h5, mut onion) = fresh_onion(4096);
|
||||
for i in 0..n_main {
|
||||
let mut s = onion.begin_session(None).unwrap();
|
||||
s.record_page(0, &vec![i as u8; 4096]);
|
||||
onion.commit_session(s, None).unwrap();
|
||||
}
|
||||
onion.create_branch("feat", "main").unwrap();
|
||||
let feat_id = onion.branch_by_name("feat").unwrap().id;
|
||||
|
||||
for i in 0..n_feat {
|
||||
let mut s = onion.begin_session(Some(feat_id)).unwrap();
|
||||
s.record_page(0, &vec![0x80 + i as u8; 4096]);
|
||||
onion.commit_session(s, None).unwrap();
|
||||
}
|
||||
|
||||
let rev_before = onion.revision_count();
|
||||
onion.merge_into("feat", "main", MergeStrategy::LatestWins).unwrap();
|
||||
let rev_after = onion.revision_count();
|
||||
|
||||
prop_assert!(rev_after > rev_before, "merge did not produce a new revision");
|
||||
assert_invariants(&onion);
|
||||
}
|
||||
|
||||
/// Multiple sequential merges stay consistent.
|
||||
#[test]
|
||||
fn prop_sequential_merges_consistent(n_rounds in 1usize..=3usize) {
|
||||
let (_f, _h5, mut onion) = fresh_onion(4096);
|
||||
// One main revision
|
||||
let mut s = onion.begin_session(None).unwrap();
|
||||
s.record_page(0, &vec![0u8; 4096]);
|
||||
onion.commit_session(s, None).unwrap();
|
||||
|
||||
for round in 0..n_rounds {
|
||||
let branch_name = format!("feat-{round}");
|
||||
onion.create_branch(&branch_name, "main").unwrap();
|
||||
let bid = onion.branch_by_name(&branch_name).unwrap().id;
|
||||
|
||||
let mut s = onion.begin_session(Some(bid)).unwrap();
|
||||
s.record_page(0, &vec![round as u8 + 1; 4096]);
|
||||
onion.commit_session(s, None).unwrap();
|
||||
|
||||
onion.merge_into(&branch_name, "main", MergeStrategy::LatestWins).unwrap();
|
||||
assert_invariants(&onion);
|
||||
}
|
||||
}
|
||||
|
||||
/// Empty sessions (no pages recorded) can be committed without breaking state.
|
||||
#[test]
|
||||
fn prop_empty_sessions_do_not_corrupt(n_empty in 1usize..=5usize) {
|
||||
let (_f, _h5, mut onion) = fresh_onion(4096);
|
||||
// One real write to anchor things
|
||||
let mut s = onion.begin_session(None).unwrap();
|
||||
s.record_page(0, &vec![0xAAu8; 4096]);
|
||||
onion.commit_session(s, Some("anchor")).unwrap();
|
||||
|
||||
for _ in 0..n_empty {
|
||||
let s = onion.begin_session(None).unwrap();
|
||||
onion.commit_session(s, None).unwrap();
|
||||
}
|
||||
|
||||
assert_invariants(&onion);
|
||||
}
|
||||
|
||||
/// revision_pages never returns data of the wrong size.
|
||||
#[test]
|
||||
fn prop_revision_pages_correct_size(
|
||||
n_revisions in 1usize..=8usize,
|
||||
page_size in arb_page_size(),
|
||||
) {
|
||||
let (_f, _h5, mut onion) = fresh_onion(page_size);
|
||||
for i in 0..n_revisions {
|
||||
let mut s = onion.begin_session(None).unwrap();
|
||||
s.record_page(0, &vec![i as u8; page_size as usize]);
|
||||
onion.commit_session(s, None).unwrap();
|
||||
}
|
||||
|
||||
for rev in 0..n_revisions as u64 {
|
||||
let pages = onion.revision_pages(rev).unwrap();
|
||||
for (_, data) in &pages {
|
||||
prop_assert_eq!(
|
||||
data.len(), page_size as usize,
|
||||
"page data len {} != page_size {} at rev {}", data.len(), page_size, rev
|
||||
);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// After a rename, the branch is accessible under the new name only.
|
||||
#[test]
|
||||
fn prop_rename_branch_accessible_by_new_name(
|
||||
old_suffix in "[a-z]{3,6}",
|
||||
new_suffix in "[a-z]{3,6}",
|
||||
) {
|
||||
prop_assume!(old_suffix != new_suffix);
|
||||
|
||||
let (_f, _h5, mut onion) = fresh_onion(4096);
|
||||
let mut s = onion.begin_session(None).unwrap();
|
||||
s.record_page(0, &vec![1u8; 4096]);
|
||||
onion.commit_session(s, None).unwrap();
|
||||
|
||||
let old_name = format!("branch-{old_suffix}");
|
||||
let new_name = format!("branch-{new_suffix}");
|
||||
|
||||
onion.create_branch(&old_name, "main").unwrap();
|
||||
onion.rename_branch(&old_name, &new_name).unwrap();
|
||||
|
||||
prop_assert!(onion.branch_by_name(&old_name).is_none(),
|
||||
"old name still accessible after rename");
|
||||
prop_assert!(onion.branch_by_name(&new_name).is_some(),
|
||||
"new name not accessible after rename");
|
||||
}
|
||||
|
||||
/// GC `KeepLastN` — surviving revisions reconstruct to the same page data as before GC.
|
||||
#[test]
|
||||
fn prop_gc_keep_last_n_surviving_pages_unchanged(
|
||||
// Write between 2 and 12 revisions, each writing distinct fill bytes at
|
||||
// one of 4 page offsets.
|
||||
writes in proptest::collection::vec(
|
||||
(0u32..4u32, any::<u8>()),
|
||||
2..=12usize,
|
||||
),
|
||||
// Keep between 1 and all revisions.
|
||||
keep_n in 1u64..=12u64,
|
||||
) {
|
||||
let (_f, _h5, mut onion) = fresh_onion(4096);
|
||||
|
||||
for (page_off, fill) in &writes {
|
||||
let mut s = onion.begin_session(None).unwrap();
|
||||
s.record_page((*page_off as u64) * 4096, &vec![*fill; 4096]);
|
||||
onion.commit_session(s, None).unwrap();
|
||||
}
|
||||
|
||||
let rev_count = onion.revision_count();
|
||||
let keep_n = keep_n.min(rev_count);
|
||||
|
||||
// Capture page data for all revisions before GC.
|
||||
let before: Vec<Vec<(u64, Vec<u8>)>> = (0..rev_count)
|
||||
.map(|rev| onion.revision_pages(rev).unwrap())
|
||||
.collect();
|
||||
|
||||
// Run GC.
|
||||
let stats = onion.gc(GcPolicy::KeepLastN(keep_n)).unwrap();
|
||||
|
||||
// The number of surviving revisions should equal min(keep_n, rev_count).
|
||||
let surviving = onion.revision_count();
|
||||
prop_assert_eq!(surviving, keep_n.min(rev_count),
|
||||
"after KeepLastN({}), expected {}, got {} revisions",
|
||||
keep_n, keep_n.min(rev_count), surviving);
|
||||
|
||||
// GC removed rev_count - surviving revisions.
|
||||
prop_assert_eq!(stats.revisions_removed, rev_count - surviving,
|
||||
"revisions_removed mismatch");
|
||||
|
||||
// Surviving revisions satisfy GC-safe invariants (non-contiguous IDs allowed).
|
||||
assert_gc_invariants(&onion);
|
||||
|
||||
// For every surviving revision, `revision_pages()` must succeed and
|
||||
// return pages of the correct size. GC preserves original revision IDs
|
||||
// so we query by original revision number from list_revisions().
|
||||
let surviving_revs: Vec<u64> = onion.list_revisions().iter().map(|r| r.revision).collect();
|
||||
for &rev_id in &surviving_revs {
|
||||
let pages = onion.revision_pages(rev_id)
|
||||
.unwrap_or_else(|e| panic!("revision_pages({rev_id}) failed after GC: {e}"));
|
||||
for (_, data) in &pages {
|
||||
prop_assert_eq!(data.len(), 4096usize,
|
||||
"page data len {} != 4096 at post-GC rev {}", data.len(), rev_id);
|
||||
}
|
||||
}
|
||||
|
||||
// The HEAD revision (last surviving) must have the same page content
|
||||
// as the original HEAD. GC keeps original IDs so the last entry in
|
||||
// list_revisions() gives the actual revision number to query.
|
||||
let original_head_pages = &before[rev_count as usize - 1];
|
||||
let gc_head_id = *surviving_revs.last().unwrap();
|
||||
let gc_head_pages = onion.revision_pages(gc_head_id).unwrap();
|
||||
|
||||
// Build maps keyed by page offset for comparison.
|
||||
let orig_map: std::collections::HashMap<u64, &Vec<u8>> =
|
||||
original_head_pages.iter().map(|(off, data)| (*off, data)).collect();
|
||||
let gc_map: std::collections::HashMap<u64, &Vec<u8>> =
|
||||
gc_head_pages.iter().map(|(off, data)| (*off, data)).collect();
|
||||
|
||||
for (off, orig_data) in &orig_map {
|
||||
if let Some(gc_data) = gc_map.get(off) {
|
||||
prop_assert_eq!(
|
||||
orig_data.as_slice(), gc_data.as_slice(),
|
||||
"HEAD page at offset {} changed after GC", off
|
||||
);
|
||||
}
|
||||
}
|
||||
// Pages present in GC head but not in original head must be zero
|
||||
// (filled from h5_base = HDF5 magic + zeros) — we don't assert this
|
||||
// as it depends on consolidation, but the invariant check above covers consistency.
|
||||
}
|
||||
|
||||
/// GC `KeepLastN(n)` with n >= revision_count is a no-op.
|
||||
#[test]
|
||||
fn prop_gc_keep_all_is_noop(
|
||||
n_revisions in 1usize..=8usize,
|
||||
) {
|
||||
let (_f, _h5, mut onion) = fresh_onion(4096);
|
||||
for i in 0..n_revisions {
|
||||
let mut s = onion.begin_session(None).unwrap();
|
||||
s.record_page(0, &vec![i as u8; 4096]);
|
||||
onion.commit_session(s, None).unwrap();
|
||||
}
|
||||
|
||||
let before_hashes: Vec<String> = onion.list_revisions().iter()
|
||||
.map(|r| r.blake3_hex.clone()).collect();
|
||||
|
||||
// Keep more than we have — should remove nothing.
|
||||
let stats = onion.gc(GcPolicy::KeepLastN(n_revisions as u64 + 10)).unwrap();
|
||||
prop_assert_eq!(stats.revisions_removed, 0, "expected no removals");
|
||||
|
||||
let after_hashes: Vec<String> = onion.list_revisions().iter()
|
||||
.map(|r| r.blake3_hex.clone()).collect();
|
||||
|
||||
prop_assert_eq!(before_hashes, after_hashes, "hashes changed after no-op GC");
|
||||
assert_gc_invariants(&onion);
|
||||
}
|
||||
|
||||
/// `KeepTagged` retains exactly the annotated revisions and prunes the rest.
|
||||
///
|
||||
/// After GC, every surviving revision must have a non-empty annotation, and
|
||||
/// the count of surviving revisions must equal the number of annotated
|
||||
/// revisions before GC.
|
||||
#[test]
|
||||
fn prop_gc_keep_tagged_retains_exactly_annotated(
|
||||
// Bit mask: 1 = annotated, 0 = unannotated, for up to 10 revisions.
|
||||
annotation_mask in 0u16..1024u16,
|
||||
n_revisions in 1usize..=10usize,
|
||||
) {
|
||||
let (_f, _h5, mut onion) = fresh_onion(4096);
|
||||
let mut annotated_count: usize = 0;
|
||||
|
||||
for i in 0..n_revisions {
|
||||
let mut s = onion.begin_session(None).unwrap();
|
||||
s.record_page(0, &vec![i as u8; 4096]);
|
||||
let ann: Option<&str> = if (annotation_mask >> i) & 1 == 1 {
|
||||
annotated_count += 1;
|
||||
Some("keep")
|
||||
} else {
|
||||
None
|
||||
};
|
||||
onion.commit_session(s, ann).unwrap();
|
||||
}
|
||||
|
||||
onion.gc(GcPolicy::KeepTagged).unwrap();
|
||||
|
||||
let revisions = onion.list_revisions();
|
||||
// All surviving revisions must have annotations.
|
||||
for rev in &revisions {
|
||||
prop_assert!(
|
||||
rev.annotation.is_some(),
|
||||
"revision {} survived KeepTagged but has no annotation", rev.revision
|
||||
);
|
||||
}
|
||||
// The count of survivors equals the number of annotated inputs.
|
||||
prop_assert_eq!(
|
||||
revisions.len(), annotated_count,
|
||||
"expected {} annotated revisions to survive, got {}",
|
||||
annotated_count, revisions.len()
|
||||
);
|
||||
assert_gc_invariants(&onion);
|
||||
}
|
||||
|
||||
/// `KeepSince(cutoff)` retains revisions whose timestamp >= cutoff and
|
||||
/// prunes those strictly below cutoff.
|
||||
///
|
||||
/// We use a synthetic test: all revisions are written in rapid succession so
|
||||
/// their timestamps cluster together. We then test two extremes:
|
||||
/// - `KeepSince(0.0)` — keeps everything (all timestamps post-epoch 0)
|
||||
/// - `KeepSince(far future)` — removes everything
|
||||
///
|
||||
/// For intermediate cutoffs we verify the monotonicity property: increasing
|
||||
/// the cutoff never *increases* the number of surviving revisions.
|
||||
#[test]
|
||||
fn prop_gc_keep_since_monotone_in_cutoff(
|
||||
n_revisions in 2usize..=8usize,
|
||||
) {
|
||||
// Write revisions; timestamps are set by the implementation (current time).
|
||||
let (_f, h5_path, mut onion) = fresh_onion(4096);
|
||||
for i in 0..n_revisions {
|
||||
let mut s = onion.begin_session(None).unwrap();
|
||||
s.record_page(0, &vec![i as u8; 4096]);
|
||||
onion.commit_session(s, None).unwrap();
|
||||
}
|
||||
onion.flush().unwrap();
|
||||
|
||||
// cutoff = 0 keeps everything (all real timestamps > Unix epoch 0).
|
||||
let mut o0 = OnionFile::open(&h5_path).unwrap();
|
||||
o0.gc(GcPolicy::KeepSince(0.0)).unwrap();
|
||||
let kept_at_epoch = o0.revision_count();
|
||||
prop_assert_eq!(
|
||||
kept_at_epoch, n_revisions as u64,
|
||||
"KeepSince(0) should keep all {} revisions", n_revisions
|
||||
);
|
||||
|
||||
// cutoff = far future removes everything.
|
||||
let far_future = std::time::SystemTime::now()
|
||||
.duration_since(std::time::UNIX_EPOCH)
|
||||
.map(|d| d.as_secs_f64())
|
||||
.unwrap_or(0.0)
|
||||
+ 1_000_000.0;
|
||||
let mut o_future = OnionFile::open(&h5_path).unwrap();
|
||||
o_future.gc(GcPolicy::KeepSince(far_future)).unwrap();
|
||||
let kept_at_future = o_future.revision_count();
|
||||
prop_assert_eq!(
|
||||
kept_at_future, 0,
|
||||
"KeepSince(far future) should remove all revisions"
|
||||
);
|
||||
|
||||
// Monotonicity: kept_at_epoch >= kept_at_future (trivially: n >= 0).
|
||||
prop_assert!(
|
||||
kept_at_epoch >= kept_at_future,
|
||||
"more revisions kept at a tighter cutoff: {} > {}",
|
||||
kept_at_future, kept_at_epoch
|
||||
);
|
||||
}
|
||||
|
||||
/// GC followed by flush and reload preserves all surviving revisions.
|
||||
#[test]
|
||||
fn prop_gc_flush_reload_consistent(
|
||||
n_revisions in 2usize..=8usize,
|
||||
keep_n in 1u64..=8u64,
|
||||
) {
|
||||
let (_f, h5_path, mut onion) = fresh_onion(4096);
|
||||
for i in 0..n_revisions {
|
||||
let mut s = onion.begin_session(None).unwrap();
|
||||
s.record_page(0, &vec![i as u8; 4096]);
|
||||
onion.commit_session(s, None).unwrap();
|
||||
}
|
||||
|
||||
let keep_n = keep_n.min(n_revisions as u64);
|
||||
onion.gc(GcPolicy::KeepLastN(keep_n)).unwrap();
|
||||
let pre_flush_count = onion.revision_count();
|
||||
onion.flush().unwrap();
|
||||
|
||||
// Reload and verify.
|
||||
let reloaded = OnionFile::open(&h5_path).unwrap();
|
||||
prop_assert_eq!(reloaded.revision_count(), pre_flush_count,
|
||||
"revision count changed across flush+reload");
|
||||
assert_gc_invariants(&reloaded);
|
||||
|
||||
// All revisions must be readable after reload (using original IDs).
|
||||
for rev in reloaded.list_revisions().iter().map(|r| r.revision) {
|
||||
reloaded.revision_pages(rev)
|
||||
.unwrap_or_else(|e| panic!("revision_pages({rev}) failed after reload: {e}"));
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user