Files
deepseek-harness/packages/session/session-title/tests/projection.spec.ts
imccyu ec601ca13d build(vendor): rescope the vendored Cordis packages into @deepseek-ai
Machine-produced by `pnpm run rescope-vendor --apply` plus the regeneration it
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Renames nine vendored packages (cordis, cosmokit, schemastery and the six
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Two rules read `@deepseek-ai/` as "another workspace plugin": the client bundle
purity gate now names the vendored libraries a browser bundle inlines, and the
files where a bare `cordis` is an agent-preset id keep that product data.
2026-08-10 22:04:13 +08:00

77 lines
3.6 KiB
TypeScript

/**
* The `title` projection unit: mounting the title service beside the
* projection registry serves the current normalized title (last-wins over
* session/title events, the same events foldSessionTitle consumes) — null
* before the first title — through the registry snapshot and the change
* feed; compositions without the registry are unaffected; unmounting the
* service removes the key (HMR safety). The bespoke session/title mux frame
* is untouched by this unit (its retirement is the client value-store
* migration's concern).
*/
import { describe, expect, it } from 'vitest'
import { Context } from '@deepseek-ai/cordis'
import SessionStore, { SessionId } from '@deepseek-ai/dsh-session'
import type { Session } from '@deepseek-ai/dsh-session'
import SessionProjectionRegistry from '@deepseek-ai/dsh-session-projection'
import SessionTitleService from '@deepseek-ai/dsh-session-title'
const CONFIG = { fallbackMaxWords: 8, fallbackMaxBytes: 64, maxTitleBytes: 256 }
async function harness(withTitleService: boolean): Promise<{ ctx: Context; session: Session }> {
const ctx = new Context()
await ctx.plugin(SessionStore)
await ctx.plugin(SessionProjectionRegistry)
if (withTitleService) await ctx.plugin(SessionTitleService, CONFIG)
return { ctx, session: ctx.sessions.create(SessionId('titled')) }
}
/** Append one session/title event directly (the replay-plane shape the unit folds). */
function appendTitle(session: Session, title: string): number {
return session.append('session/title', { title, messageSeqs: [1], source: { kind: 'fallback' } }).seq
}
describe('title projection unit', () => {
it('serves null before the first title event', async () => {
const { ctx, session } = await harness(true)
const snapshot = ctx.sessionProjections.snapshot(session)
expect(snapshot.values.title).toBeNull()
})
it('serves the latest title last-wins and notifies the change feed with the causing seq', async () => {
const { ctx, session } = await harness(true)
const changes: { key: string; value: unknown; seq: number }[] = []
ctx.sessionProjections.onChanged((_session, key, value, seq) => {
changes.push({ key, value, seq })
})
const firstSeq = appendTitle(session, 'First title')
const secondSeq = appendTitle(session, 'Second title')
// Unrelated event: same-reference apply, no notification.
session.append('turn/start', { turn: 1 })
expect(changes).toEqual([
{ key: 'title', value: 'First title', seq: firstSeq },
{ key: 'title', value: 'Second title', seq: secondSeq },
])
const snapshot = ctx.sessionProjections.snapshot(session)
expect(snapshot.values.title).toBe('Second title')
expect(snapshot.asOfSeq).toBe(session.seq - 1)
})
it('folds titles already in the log when the service mounts late (lazy cell build)', async () => {
const { ctx, session } = await harness(false)
appendTitle(session, 'Pre-mount title')
await ctx.plugin(SessionTitleService, CONFIG)
expect(ctx.sessionProjections.snapshot(session).values.title).toBe('Pre-mount title')
})
it('has no title key without the title service, and drops it when the service unloads (HMR safety)', async () => {
const { ctx, session } = await harness(false)
expect('title' in ctx.sessionProjections.snapshot(session).values).toBe(false)
const fiber = await ctx.plugin(SessionTitleService, CONFIG)
appendTitle(session, 'Ephemeral')
expect(ctx.sessionProjections.snapshot(session).values.title).toBe('Ephemeral')
await fiber.dispose()
expect('title' in ctx.sessionProjections.snapshot(session).values).toBe(false)
})
})