David Snelling
de79d6b5a4
Each file opened one or more Brainy instances (beforeEach, or a small per-test helper like migration-gate-family-scoped's module-level seed()) and never closed them. migration-gate-family-scoped.test.ts now tracks every brain seed() hands back in a describe-scoped array drained by afterEach, since the helper itself lives outside the describe block.
87 lines
3.6 KiB
TypeScript
87 lines
3.6 KiB
TypeScript
/**
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* Metadata cold-read guard (verifyMetadataLive) — a downstream deployment
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* reported cold `find({ where })` returning a silent `[]` on a freshly-opened
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* brain (a native metadata index that reports data but has not loaded its field
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* postings). This guard, the field-index counterpart of verifyGraphAdjacencyLive,
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* probes a known persisted value on the first filtered find().
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*
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* RE-POINTED to the health-gate law: the guard NEVER rebuilds and NEVER walks
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* the store from a read — a read-path rebuild is exactly the dark-rebuild
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* failure mode the law retires (open() alone owns building). When the probe
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* cannot serve the known value it raises a loud MetadataIndexNotReadyError
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* IMMEDIATELY, with no rebuild attempt in between — never a silent empty
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* result that misrepresents existing data.
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*
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* The 8.0 JS index cold-loads correctly, so we simulate the cold native failure
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* mode by intercepting the provider's getIdsForFilter/rebuild.
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*/
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import { describe, it, expect, beforeEach, afterEach } from 'vitest'
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import { Brainy, NounType, MetadataIndexNotReadyError } from '../../src/index.js'
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const V = () => Array.from({ length: 384 }, (_, i) => Math.sin(i * 0.1) + 0.001)
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describe('Metadata cold-read guard (#venue silent-[])', () => {
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let brain: any
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beforeEach(async () => {
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brain = new Brainy({ requireSubtype: false, storage: { type: 'memory' } })
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await brain.init()
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await brain.add({ vector: V(), type: NounType.Concept, metadata: { status: 'active' } })
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await brain.add({ vector: V(), type: NounType.Concept, metadata: { status: 'archived' } })
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await brain.flush()
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})
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afterEach(async () => {
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await brain.close()
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})
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it('warm brain: filtered find is correct and the guard does not rebuild', async () => {
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const mi = brain.metadataIndex
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let rebuilds = 0
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const origRebuild = mi.rebuild.bind(mi)
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mi.rebuild = async () => {
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rebuilds++
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return origRebuild()
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}
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const res = await brain.find({ where: { status: 'active' }, limit: 100 })
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expect(res.length).toBe(1)
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expect(rebuilds).toBe(0) // served live — no rebuild
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expect(brain._metadataVerified).toBe(true) // one-shot latched
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mi.rebuild = origRebuild
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})
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it('cold index: verifyMetadataLive REFUSES immediately — find({where}) throws MetadataIndexNotReadyError, NEVER a silent [], and NEVER a rebuild attempt', async () => {
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const mi = brain.metadataIndex
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const origGetIds = mi.getIdsForFilter.bind(mi)
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let rebuilds = 0
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const origRebuild = mi.rebuild.bind(mi)
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brain._metadataVerified = false // re-arm the one-shot for this scenario
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mi.getIdsForFilter = async () => [] // cold: the known value never resolves
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mi.rebuild = async () => { rebuilds++; return origRebuild() }
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try {
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await expect(brain.find({ where: { status: 'active' }, limit: 100 })).rejects.toBeInstanceOf(
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MetadataIndexNotReadyError
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)
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expect(rebuilds).toBe(0) // the guard never rebuilds from a read — it refuses loudly instead
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} finally {
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mi.getIdsForFilter = origGetIds
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mi.rebuild = origRebuild
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}
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})
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it('a query with no filter does not trigger the metadata probe', async () => {
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const mi = brain.metadataIndex
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let probes = 0
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const origGetIds = mi.getIdsForFilter.bind(mi)
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mi.getIdsForFilter = async (...a: any[]) => {
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probes++
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return origGetIds(...a)
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}
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brain._metadataVerified = false
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// A pure vector query (no where/type) must not run verifyMetadataLive's probe.
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await brain.find({ vector: V(), limit: 5 })
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expect(brain._metadataVerified).toBe(false) // guard never ran
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mi.getIdsForFilter = origGetIds
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void probes
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})
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})
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