GitNexus/gitnexus/test
Gergo Magyar 4ce1c419e3 perf(graph): reverse-adjacency + file indexes drop removeNode/removeNodesByFile from O(N)
PR #980 in-line review flagged that `removeNode` iterated the full
relationshipMap to find edges touching a node (O(E)), and
`removeNodesByFile` called removeNode for every matching node after
a full nodeMap scan (O(N × E)). Pre-existing, but worth fixing
properly since the writeRel/deleteRel helpers we just added make the
index-maintenance story coherent.

Two new indexes maintained on every mutation path:

- `edgeIdsByNode: Map<nodeId, Set<relId>>` — reverse adjacency. Every
  edge records both endpoints, so removeNode iterates
  edgeIdsByNode.get(id) instead of every relationship. Self-edges
  skip the duplicate-endpoint write to keep the Set dedup explicit.
- `nodeIdsByFile: Map<filePath, Set<nodeId>>` — file index.
  removeNodesByFile reaches its file's nodes directly.

Complexity:
- removeNode: O(edges-touching-node), was O(total-edges).
- removeNodesByFile: O(file-nodes × avg-edges-per-node + scan of the
  file bucket), was O(total-nodes + file-nodes × total-edges).

Index maintenance is centralized in writeRel/deleteRel + new
addToBucket/removeFromBucket helpers. Empty buckets are pruned to
keep the indexes compact. Existing dual-invariant (relationshipMap ↔
relationshipsByType) preserved.

Nodes without a `filePath` property (e.g. Community/Cluster nodes)
are intentionally NOT indexed in nodeIdsByFile — they can't belong
to any file, so removeNodesByFile correctly leaves them alone.

Coverage: 7 new unit tests (33/33 total, was 26). Added cases:
- removes only edges touching the removed node
- handles self-edges
- removes orphan node with no edges
- removeNodesByFile removes only matching nodes
- returns 0 when no match
- also removes edges whose endpoints lived on the removed file
- does not index nodes without a filePath property

Verification: 204/204 test/integration/resolvers/python.test.ts both
REGISTRY_PRIMARY_PYTHON=0 and =1. 4235/4235 unit tests. tsc clean.
2026-04-21 13:13:21 +01:00
..
fixtures test(scope-resolution): pin local-namespace-import behavior + document empirical finalize hoisting 2026-04-21 10:54:01 +01:00
helpers Fix security issues and critical bugs found in code review (#709) 2026-04-10 05:20:29 +01:00
integration test(scope-resolution): pin local-namespace-import behavior + document empirical finalize hoisting 2026-04-21 10:54:01 +01:00
unit perf(graph): reverse-adjacency + file indexes drop removeNode/removeNodesByFile from O(N) 2026-04-21 13:13:21 +01:00
utils ci: add macOS to cross-platform test matrix (#208) 2026-03-07 10:38:32 +00:00
global-setup.ts feat: upgrade @ladybugdb/core to 0.15.2 and remove segfault workarounds (#374) 2026-03-19 08:25:43 +00:00
vitest.d.ts refactor: migrate from KuzuDB to LadybugDB v0.15 (#275) 2026-03-15 15:53:01 +00:00