feat(8.0): version-coupling guard — a mismatched/failed native plugin fails loud, never silent JS fallback

A wrong or missing accelerator (@soulcraft/cor) used to silently degrade to the
default JS engine — the #1 source of invisible cross-repo drift. Brainy does no
plugin auto-detection (a registered plugin is always explicitly requested via
config.plugins or brain.use()), so any mismatch/failure is now fatal:

- BrainyPlugin gains optional `brainyRange` (semver range of brainy it supports);
  init() throws if the running brainy is outside it. New dep-free, prerelease-safe
  matcher pluginRangeSatisfies() (8.0.0-rc1 satisfies >=8.0.0).
- activateAll(): a plugin that THROWS during activate now re-throws (was swallowed
  to a JS fallback); a graceful decline (activate()→false) stays non-fatal but logs
  a loud warning.
- loadPlugins(): an explicitly-listed package that can't load — or isn't a valid
  plugin — throws (was a silent skip).
- Provider-key cliff: a pre-8.0 plugin that registers a legacy vector key
  ('hnsw'/'diskann') but not the 8.0 'vector' key throws (brainy 8.x reads only
  'vector', so it would otherwise run JS vectors invisibly).

Tests: tests/unit/plugin-version-coupling.test.ts (range matcher incl. rc1; range
mismatch / activate-throw / cliff / missing-package all throw; decline non-fatal).
Updated two plugin.test.ts cases that asserted the old silent-swallow behavior.
Build green; 1464 unit green. cor declares its brainyRange per handoff LV.1 #2.
This commit is contained in:
David Snelling 2026-06-19 10:13:04 -07:00
parent b198281ce1
commit 1264fec534
4 changed files with 271 additions and 32 deletions

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@ -0,0 +1,108 @@
/**
* @module tests/unit/plugin-version-coupling
* @description Guards the brainynative-plugin version coupling (audit P0). A
* mismatched or failed accelerator must FAIL LOUD, never silently fall back to
* the default JS engine that silent degrade was the #1 cross-repo drift
* (e.g. an old @soulcraft/cor running invisibly against brainy 8.x). Covers:
* 1. `pluginRangeSatisfies` (the dep-free semver-range matcher, incl. RC tags)
* 2. `brainyRange` mismatch init throws
* 3. activate() throwing init throws (no swallow)
* 4. the legacy provider-key cliff ('hnsw' but not 'vector') init throws
* 5. an explicitly-listed plugin that can't load init throws
* 6. a graceful decline (activate()false) no throw, loud warn
*/
import { describe, it, expect } from 'vitest'
import { Brainy } from '../../src/brainy.js'
import { pluginRangeSatisfies, type BrainyPlugin, type BrainyPluginContext } from '../../src/plugin.js'
function memBrain(): Brainy {
return new Brainy({ requireSubtype: false, storage: { type: 'memory' }, silent: true })
}
describe('pluginRangeSatisfies (dep-free range matcher)', () => {
it('handles the comparator forms a brainyRange realistically uses', () => {
expect(pluginRangeSatisfies('8.0.0', '>=8.0.0')).toBe(true)
expect(pluginRangeSatisfies('7.31.2', '>=8.0.0')).toBe(false)
expect(pluginRangeSatisfies('8.4.1', '>=8.0.0 <9.0.0')).toBe(true)
expect(pluginRangeSatisfies('9.0.0', '>=8.0.0 <9.0.0')).toBe(false)
expect(pluginRangeSatisfies('8.2.0', '^8.0.0')).toBe(true)
expect(pluginRangeSatisfies('9.0.0', '^8.0.0')).toBe(false)
expect(pluginRangeSatisfies('8.0.0', '=8.0.0')).toBe(true)
expect(pluginRangeSatisfies('8.0.1', '=8.0.0')).toBe(false)
})
it('tolerates a prerelease tag on the running version (RC builds satisfy a stable floor)', () => {
// The lockstep ships as 8.0.0-rc1 — it MUST satisfy cor's `>=8.0.0` range.
expect(pluginRangeSatisfies('8.0.0-rc1', '>=8.0.0')).toBe(true)
expect(pluginRangeSatisfies('8.0.0-rc1', '^8.0.0')).toBe(true)
expect(pluginRangeSatisfies('8.0.0-rc1', '>=8.0.0 <9.0.0')).toBe(true)
})
it('fails OPEN on a malformed range (never blocks a valid brain on a bad declaration)', () => {
expect(pluginRangeSatisfies('8.0.0', 'not-a-range')).toBe(true)
expect(pluginRangeSatisfies('8.0.0', '')).toBe(true)
})
})
/** A minimal fake plugin; `onActivate` lets a test register providers / throw. */
function fakePlugin(
name: string,
opts: { brainyRange?: string; onActivate?: (ctx: BrainyPluginContext) => boolean } = {}
): BrainyPlugin {
return {
name,
brainyRange: opts.brainyRange,
async activate(ctx) {
return opts.onActivate ? opts.onActivate(ctx) : true
}
}
}
describe('version coupling at init() — no silent fallback', () => {
it('throws when a plugin declares a brainyRange the running brainy is outside', async () => {
const brain = memBrain()
brain.use(fakePlugin('@fake/incompatible', { brainyRange: '>=999.0.0' }))
await expect(brain.init()).rejects.toThrow(/supports brainy|version-matched/)
})
it('does NOT throw when the brainyRange is satisfied', async () => {
const brain = memBrain()
brain.use(fakePlugin('@fake/compatible', { brainyRange: '>=0.0.0' }))
await expect(brain.init()).resolves.toBeUndefined()
await brain.close()
})
it('throws (does not swallow) when activate() throws', async () => {
const brain = memBrain()
brain.use(fakePlugin('@fake/boom', { onActivate: () => { throw new Error('kaboom') } }))
await expect(brain.init()).rejects.toThrow(/failed to activate|kaboom/)
})
it('throws on the legacy provider-key cliff (registers hnsw but not vector)', async () => {
const brain = memBrain()
brain.use(fakePlugin('@fake/old-cor', {
onActivate: (ctx) => { ctx.registerProvider('hnsw', {}); return true }
}))
await expect(brain.init()).rejects.toThrow(/legacy vector provider|requires/)
})
it('a graceful decline (activate()→false) is non-fatal — init succeeds on the default engine', async () => {
// Decline is a documented, non-fatal path (brainy logs a loud warning and
// uses the default engine for that plugin's providers). The contract that
// matters here: it does NOT abort init the way a hard failure does.
const brain = memBrain()
brain.use(fakePlugin('@fake/declines', { onActivate: () => false }))
await expect(brain.init()).resolves.toBeUndefined()
await brain.close()
})
it('throws when an explicitly-listed plugin package cannot be loaded', async () => {
const brain = new Brainy({
requireSubtype: false,
storage: { type: 'memory' },
silent: true,
plugins: ['@soulcraft/this-package-does-not-exist-xyz']
})
await expect(brain.init()).rejects.toThrow(/could not be loaded|config\.plugins/)
})
})

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@ -71,7 +71,7 @@ describe('PluginRegistry', () => {
expect(registry.getActivePlugins()).toEqual([])
})
it('should handle plugin that throws during activate', async () => {
it('throws (does not silently swallow) when a plugin throws during activate', async () => {
const plugin: BrainyPlugin = {
name: 'broken-plugin',
activate: async () => {
@ -85,9 +85,10 @@ describe('PluginRegistry', () => {
version: '7.9.3'
}
// Should not throw — graceful fallback
const activated = await registry.activateAll(context)
expect(activated).toEqual([])
// A registered plugin is always explicitly requested (config.plugins or
// brain.use(); brainy does no auto-detection), so a hard activation failure
// must surface — never a silent fall-back to the default engine.
await expect(registry.activateAll(context)).rejects.toThrow(/failed to activate|activation failed/)
expect(registry.getActivePlugins()).toEqual([])
})
@ -279,7 +280,7 @@ describe('Brainy plugin integration', () => {
await brain.close()
})
it('should fall back gracefully when plugin throws', async () => {
it('throws (no silent fallback) when an explicitly-used plugin crashes on activate', async () => {
const mockPlugin: BrainyPlugin = {
name: 'crashing-plugin',
activate: async () => {
@ -293,18 +294,10 @@ describe('Brainy plugin integration', () => {
})
brain.use(mockPlugin)
// Should not throw — graceful fallback to TS
await brain.init()
expect(brain.getActivePlugins()).toEqual([])
const id = await brain.add({
data: { name: 'test' },
type: NounType.Concept,
metadata: { tag: 'unit-test' }
})
expect(id).toBeTypeOf('string')
await brain.close()
// A brain.use()'d plugin is explicitly requested — a hard activation crash
// must surface as a failed init(), NOT a silent degrade to the default
// engine (the version-coupling guard; see plugin-version-coupling.test.ts).
await expect(brain.init()).rejects.toThrow(/failed to activate|native module not found/)
})
it('should use() return this for chaining', () => {