David Snelling
b2005ff22a
getNounsWithPagination returned collectedNouns.length as totalCount, but the
type-first shard scan early-terminates at offset+limit+1 (peeks one for hasMore)
— so getNouns({ pagination: { limit: 1 } }).totalCount was the page size for any
non-empty brain. The index-rebuild gate calls exactly that, so cold starts
mis-logged "Small dataset (N items)". Now reports the authoritative O(1) noun
counter (rehydrated on init) as the unfiltered total; 8.0's peek-based hasMore is
already correct and unchanged. Filtered scans unchanged.
Regression: tests/unit/storage/getNouns-totalCount.test.ts. Full 8.0 unit suite green (1453).
88 lines
3.6 KiB
TypeScript
88 lines
3.6 KiB
TypeScript
/**
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* @module tests/unit/storage/getNouns-totalCount
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* @description Regression for the rebuild-gate count (the 8.0 port of the 7.32.1
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* fix; see handoff BRAINY-MMAP-VECTOR-HOOK). The index-rebuild gate reads
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* `getNouns({ pagination: { limit: 1 } }).totalCount` to decide whether a brain
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* is "small" enough to rebuild inline. The shard-scan pagination
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* (`BaseStorage.getNounsWithPagination`) early-terminates at `offset + limit + 1`
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* (it peeks one extra item to compute `hasMore`), then returned
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* `collectedNouns.length` as `totalCount` — i.e. the PAGE size, never the dataset
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* total. So every non-empty brain reported a tiny `totalCount` and logged
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* "Small dataset (N items)" on cold start regardless of the real corpus size.
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* `totalCount` must be the authoritative O(1) noun counter (maintained on every
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* add/delete, rehydrated from `counts.json` on init).
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*/
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import { describe, it, expect } from 'vitest'
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import { mkdtempSync, rmSync } from 'fs'
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import { tmpdir } from 'os'
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import { join } from 'path'
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import { FileSystemStorage } from '../../../src/storage/adapters/fileSystemStorage.js'
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import type { NounMetadata } from '../../../src/coreTypes.js'
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const DIM = 8
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/** A deterministic non-zero vector so the noun record is well-formed. */
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function vec(seed: number): number[] {
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return Array.from({ length: DIM }, (_, i) => ((seed + i) % 7) / 7 - 0.5)
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}
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/** Storage shards by UUID, so ids must be 32 hex chars. */
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function uuid(i: number): string {
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return i.toString(16).padStart(32, '0')
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}
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/**
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* Seed `n` unique nouns. Metadata is saved BEFORE the noun record: it is the
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* recommended order (avoids stat drift) and it is also where the O(1) noun
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* counter is incremented, so this mirrors the real add() path.
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*/
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async function seed(storage: FileSystemStorage, n: number): Promise<void> {
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for (let i = 0; i < n; i++) {
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const id = uuid(i)
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await storage.saveNounMetadata(id, {
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noun: 'thing',
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createdAt: Date.now(),
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updatedAt: Date.now()
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} as NounMetadata)
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await storage.saveNoun({ id, vector: vec(i), connections: new Map(), level: 0 })
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}
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}
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describe('FileSystemStorage.getNouns totalCount (rebuild-gate count)', () => {
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it('reports the TRUE total, not the page size, for a 1-item page', async () => {
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const dir = mkdtempSync(join(tmpdir(), 'brainy-totalcount-'))
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try {
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const storage = new FileSystemStorage(dir)
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await storage.init()
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await seed(storage, 25)
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// The exact call the index-rebuild gate makes.
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const onePage = await storage.getNouns({ pagination: { limit: 1 } })
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expect(onePage.items.length).toBe(1)
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// Before the fix this was the peeked page size (limit + 1 == 2).
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expect(onePage.totalCount).toBe(25)
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expect(onePage.hasMore).toBe(true)
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} finally {
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rmSync(dir, { recursive: true, force: true })
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}
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})
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it('still reports the true total after a cold reopen (counts rehydrate)', async () => {
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const dir = mkdtempSync(join(tmpdir(), 'brainy-totalcount-reopen-'))
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try {
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const first = new FileSystemStorage(dir)
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await first.init()
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await seed(first, 25)
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// Flush the count to counts.json so a fresh instance rehydrates it.
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await (first as unknown as { persistCounts(): Promise<void> }).persistCounts()
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// Cold start: a brand-new instance over the same directory.
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const reopened = new FileSystemStorage(dir)
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await reopened.init()
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const page = await reopened.getNouns({ pagination: { limit: 1 } })
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expect(page.totalCount).toBe(25)
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} finally {
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rmSync(dir, { recursive: true, force: true })
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}
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})
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})
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