mirror of
https://github.com/deepseek-ai/deepseek-harness
synced 2026-08-15 21:04:50 +00:00
532 lines
23 KiB
TypeScript
532 lines
23 KiB
TypeScript
import { mkdtempSync } from 'node:fs'
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import { tmpdir } from 'node:os'
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import { join } from 'node:path'
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import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
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import type { Context } from 'cordis'
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import type { Agent } from '@deepseek-ai/dsh-agent'
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import { agentEvents } from '@deepseek-ai/dsh-agent'
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import type { GenerateOptions, StreamChunk } from '@deepseek-ai/dsh-llm'
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import { LlmAdapter } from '@deepseek-ai/dsh-llm'
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import type { SessionId } from '@deepseek-ai/dsh-session'
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import type { Config as SessionTitleConfig } from '@deepseek-ai/dsh-session-title'
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import type { Config as SessionTitleLlmConfig } from '@deepseek-ai/dsh-session-title-first-message-llm'
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import type { HostFrame, MuxFrame } from '@deepseek-ai/dsh-host-apiproxy/api'
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import type { RpcRequest, RpcResponse } from '@deepseek-ai/dsh-host-apiproxy/api/rpc'
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import { RpcId } from '@deepseek-ai/dsh-host-apiproxy/api/rpc'
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import { bootHost, startHost, type HostHandle, type RunningHost } from '../src/index.ts'
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/** Scripted adapter: each model call consumes the next chunk list; 'hang' streams then waits for abort. */
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class ScriptedAdapter extends LlmAdapter {
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constructor(private script: (StreamChunk[] | 'hang')[]) {
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super()
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}
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async * stream(options: GenerateOptions): AsyncIterable<StreamChunk> {
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if ((options.tools?.length ?? 0) === 0) {
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yield * textResponse('Durable append-only session titles')
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return
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}
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const entry = this.script.shift()
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if (!entry) throw new Error('ScriptedAdapter: script exhausted')
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if (entry === 'hang') {
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yield { type: 'block-start', index: 0, blockType: 'text' }
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await new Promise<void>((_resolve, reject) => {
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options.signal?.addEventListener('abort', () => { reject(new Error('aborted')) }, { once: true })
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})
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return
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}
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yield * entry
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}
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}
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function textResponse(text: string): StreamChunk[] {
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return [
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{ type: 'block-start', index: 0, blockType: 'text' },
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{ type: 'text-delta', index: 0, text },
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{ type: 'block-end', index: 0, block: { type: 'text', text } },
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{ type: 'usage', usage: { inputTokens: 10, outputTokens: text.length } },
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{ type: 'finish', reason: { kind: 'stop' } },
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]
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}
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function request<P>(payload: P): RpcRequest<P> {
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return { rpcId: RpcId(`req-${String(nextRpc++)}`), payload }
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}
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let nextRpc = 1
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function waitForIdle(ctx: Context, agent: Agent): Promise<void> {
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return new Promise((resolve) => {
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const dispose = ctx.on('agent/status', (subject: Agent, status: string) => {
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if (subject === agent && status === 'idle') {
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dispose()
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resolve()
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}
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})
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})
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}
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function expectOk<T>(response: RpcResponse<T>): T {
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expect(response.result.ok).toBe(true)
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if (!response.result.ok) throw new Error('unreachable')
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return response.result.value
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}
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async function nextMux(iterator: AsyncIterator<RpcRequest<MuxFrame>>): Promise<RpcRequest<MuxFrame>> {
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const next = await iterator.next()
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if (next.done === true) throw new Error('mux ended before the expected frame')
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return next.value
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}
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/** Durably append a title event without mounting title-generation policy. */
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function appendTitle(ctx: Context, agent: Agent, title: string) {
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return ctx.sessions.appendOutOfBand(agent.session, 'session/title', {
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title,
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messageSeqs: [1],
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source: { kind: 'fallback' },
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}, { kind: 'session-title' })
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}
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let host: RunningHost | undefined
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beforeEach(() => {
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vi.stubEnv('DEEPSEEK_API_KEY', 'spec-placeholder-key')
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})
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afterEach(async () => {
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await host?.dispose()
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host = undefined
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vi.unstubAllEnvs()
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})
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async function boot(
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script: (StreamChunk[] | 'hang')[] = [],
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sessionTitle?: SessionTitleConfig,
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sessionTitleLlm?: SessionTitleLlmConfig,
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): Promise<RunningHost> {
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host = await startHost({
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boot: {
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persistenceRoot: mkdtempSync(join(tmpdir(), 'dsh-host-runtime-')),
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provider: 'scripted',
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model: 'test-model',
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...(sessionTitle === undefined ? {} : { sessionTitle }),
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...(sessionTitleLlm === undefined ? {} : { sessionTitleLlm }),
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},
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})
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host.ctx.llm.registerAdapter(['scripted'], new ScriptedAdapter(script))
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return host
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}
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describe('bootHost / startHost', () => {
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it('falls back to the deepseek defaults and disposes idempotently', async () => {
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const handle: HostHandle = await bootHost({ persistenceRoot: mkdtempSync(join(tmpdir(), 'dsh-boot-')) })
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expect(handle.defaults).toMatchObject({ provider: 'deepseek', model: 'deepseek-v4-flash' })
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expect(typeof handle.defaults.cwd).toBe('string')
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await handle.dispose()
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})
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it('startHost assembles api + handler over the same defaults and dedupes dispose', async () => {
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const running = await boot()
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expect(running.defaults).toMatchObject({ provider: 'scripted', model: 'test-model' })
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const body = JSON.stringify({ type: 'client-request', rpcId: 'r-h', method: 'host.describe', payload: {} })
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const response = await running.handler.fetch(new Request('http://x/api/host.describe', { method: 'POST', body }))
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const parsed = await response.json() as { result: { ok: boolean; value: { provider: string } } }
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expect(parsed.result.value.provider).toBe('scripted')
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const first = running.dispose()
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expect(running.dispose()).toBe(first)
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await first
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host = undefined
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})
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})
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describe('host.describe', () => {
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it('reports version, cwd, defaults, and the attached count', async () => {
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const { api } = await boot()
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const value = expectOk(await api.host.describe(request({})))
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expect(value).toMatchObject({ version: '0.0.1', cwd: process.cwd(), provider: 'scripted', model: 'test-model', attachedSessions: 0 })
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})
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})
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describe('sessions.create / list', () => {
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it('creates a session (echoing the request rpcId) and lists it newest-first', async () => {
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const { api } = await boot()
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const created = await api.sessions.create(request({ cwd: '/tmp' }))
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const { sessionId } = expectOk(created)
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expect(created.rpcId).toMatch(/^req-/)
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const second = expectOk(await api.sessions.create(request({}))).sessionId
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const { items } = expectOk(await api.sessions.list(request({})))
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expect(items.map(item => item.sessionId)).toContain(sessionId)
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expect(items.map(item => item.sessionId)).toContain(second)
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const first = items.find(item => item.sessionId === sessionId)
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expect(first?.cwd).toBe('/tmp')
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expect(first?.running).toBe(false)
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expect(first?.parentSessionId).toBeUndefined()
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})
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})
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describe('sessions.prompt / cancel', () => {
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it.each([
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{ name: 'host default', config: undefined, target: '5 words', maxTokens: 64 },
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{
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name: 'configured policy',
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config: {
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targetWords: 3,
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targetCjkCharacters: 8,
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maxInputBytes: 2_048,
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maxOutputTokens: 24,
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timeoutMs: 2_000,
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},
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target: '3 words',
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maxTokens: 24,
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},
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] satisfies {
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name: string
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config: SessionTitleLlmConfig | undefined
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target: string
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maxTokens: number
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}[])('replaces the fallback with a model-backed first-message title using the $name', async ({ config, target, maxTokens }) => {
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const modelTitle = 'Durable append-only session titles'
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const running = await boot([textResponse('pong')], undefined, config)
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const { api, ctx } = running
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const { sessionId } = expectOk(await api.sessions.create(request({})))
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const agent = ctx.agents.get(sessionId) as Agent
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const idle = waitForIdle(ctx, agent)
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expectOk(await api.sessions.prompt(request({
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sessionId,
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mode: 'queue' as const,
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content: [{ type: 'text' as const, text: 'Explain why append-only logs make session titles durable.' }],
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})))
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await idle
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await vi.waitFor(() => {
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expect(agent.session.events.filter(event => event.type === 'session/title').map(event => event.data))
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.toEqual([
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{
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title: 'Explain why append-only logs make',
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messageSeqs: [1],
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source: { kind: 'fallback' },
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},
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{
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title: modelTitle,
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messageSeqs: [1],
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source: {
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kind: 'provider',
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provider: 'session-title-first-message-llm',
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model: { provider: 'scripted', model: 'test-model' },
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},
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},
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])
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})
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const titleRequest = agent.session.events.find(event => event.type === 'session/title-llm-request')
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expect(titleRequest?.data.system).toContain(target)
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expect(titleRequest?.data.maxTokens).toBe(maxTokens)
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})
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it.each([
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{ name: 'host default', config: undefined, expected: 'Show the Web UI durable' },
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{
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name: 'configured limit',
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config: { fallbackMaxWords: 2, fallbackMaxBytes: 40, maxTitleBytes: 80 },
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expected: 'Show the',
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},
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] satisfies { name: string; config: SessionTitleConfig | undefined; expected: string }[])(
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'logs a durable fallback title with the $name',
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async ({ config, expected }) => {
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const running = await boot([textResponse('pong')], config)
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const { api, ctx } = running
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const { sessionId } = expectOk(await api.sessions.create(request({})))
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const agent = ctx.agents.get(sessionId) as Agent
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const idle = waitForIdle(ctx, agent)
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expectOk(await api.sessions.prompt(request({
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sessionId,
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mode: 'queue' as const,
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content: [{ type: 'text' as const, text: 'Show the Web UI durable session title' }],
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})))
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await idle
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const title = agent.session.events.find(event => event.type === 'session/title')
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expect(title?.data).toEqual({
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title: expected,
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messageSeqs: [1],
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source: { kind: 'fallback' },
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})
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},
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)
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it('queues a prompt whose rpcId rides into user/message, then the reply lands', async () => {
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const running = await boot([textResponse('pong')])
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const { api, ctx } = running
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const { sessionId } = expectOk(await api.sessions.create(request({})))
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const agent = ctx.agents.get(sessionId)
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expect(agent).toBeDefined()
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const idle = waitForIdle(ctx, agent as Agent)
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const promptRequest = request({ sessionId, mode: 'queue' as const, content: [{ type: 'text' as const, text: 'ping' }] })
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expectOk(await api.sessions.prompt(promptRequest))
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await idle
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const value = expectOk(await api.sessions.history(request({ sessionId })))
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const events = value.events.map(entry => entry.event)
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const userEvent = events.find(event => event.type === 'user/message') as
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| { data: { source?: { rpcId?: string } } } | undefined
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expect(userEvent?.data.source?.rpcId).toBe(promptRequest.rpcId)
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const reply = events.find(event => event.type === 'assistant/message')
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expect(reply).toBeDefined()
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})
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it('steer on an idle agent falls through to send', async () => {
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const running = await boot([textResponse('steered')])
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const { api, ctx } = running
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const { sessionId } = expectOk(await api.sessions.create(request({})))
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const idle = waitForIdle(ctx, ctx.agents.get(sessionId) as Agent)
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expectOk(await api.sessions.prompt(request({ sessionId, mode: 'steer' as const, content: [{ type: 'text' as const, text: 'now' }] })))
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await idle
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})
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it('errors session-not-found on a ghost session', async () => {
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const { api } = await boot()
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const response = await api.sessions.prompt(request({ sessionId: 'session-void' as SessionId, mode: 'queue' as const, content: [{ type: 'text' as const, text: 'x' }] }))
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expect(response.result.ok).toBe(false)
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if (!response.result.ok) expect(response.result.error.code).toBe('session-not-found')
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})
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it('maps a synchronous send throw to agent-busy', async () => {
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const { api } = await boot()
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const { sessionId } = expectOk(await api.sessions.create(request({})))
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const poisoned = [{ type: 'text', text: 'x', bad: () => 1 }] as never
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const response = await api.sessions.prompt(request({ sessionId, mode: 'queue' as const, content: poisoned }))
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expect(response.result.ok).toBe(false)
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if (!response.result.ok) expect(response.result.error.code).toBe('agent-busy')
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})
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it('cancels an attached agent and rejects an unattached one', async () => {
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const running = await boot(['hang'])
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const { api, ctx } = running
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const { sessionId } = expectOk(await api.sessions.create(request({})))
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const agent = ctx.agents.get(sessionId) as Agent
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agent.send([{ type: 'text', text: 'run forever' }])
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expectOk(await api.sessions.cancel(request({ sessionId })))
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const missing = await api.sessions.cancel(request({ sessionId: 'session-none' as SessionId }))
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expect(missing.result.ok).toBe(false)
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if (!missing.result.ok) expect(missing.result.error.code).toBe('session-not-found')
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})
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})
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describe('sessions.history', () => {
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it('implicitly resumes a cold session, deduplicating concurrent calls to one attach', async () => {
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const persistenceRoot = mkdtempSync(join(tmpdir(), 'dsh-host-resume-'))
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const first = await startHost({ boot: { persistenceRoot, provider: 'scripted', model: 'test-model' } })
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first.ctx.llm.registerAdapter(['scripted'], new ScriptedAdapter([textResponse('persisted')]))
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const { sessionId } = expectOk(await first.api.sessions.create(request({})))
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const agent = first.ctx.agents.get(sessionId) as Agent
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const idle = waitForIdle(first.ctx, agent)
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agent.send([{ type: 'text', text: 'save me' }])
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await idle
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const titleEvent = await appendTitle(first.ctx, agent, 'Persisted title')
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await first.dispose()
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host = await startHost({ boot: { persistenceRoot, provider: 'scripted', model: 'test-model' } })
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host.ctx.llm.registerAdapter(['scripted'], new ScriptedAdapter([]))
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expect(host.ctx.agents.get(sessionId)).toBeUndefined()
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const abort = new AbortController()
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const mux = host.api.events.mux(request({}), abort.signal)[Symbol.asyncIterator]()
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const [a, b] = await Promise.all([
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host.api.sessions.history(request({ sessionId })),
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host.api.sessions.history(request({ sessionId })),
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])
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for (const response of [a, b]) {
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const value = expectOk(response)
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expect(value.events.some(entry => entry.event.type === 'assistant/message')).toBe(true)
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}
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expect(host.ctx.agents.get(sessionId)).toBeDefined()
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expect(host.ctx.agents.list()).toHaveLength(1)
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expect((await nextMux(mux)).payload).toMatchObject({ type: 'session/subscribed', sessionId })
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expect((await nextMux(mux)).payload).toEqual(expect.objectContaining({
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type: 'session/title', sessionId, title: 'Persisted title', eventSeq: titleEvent.seq,
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}))
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abort.abort()
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})
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it('errors session-not-found when resume fails, deduplicating concurrent resumes', async () => {
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const { api } = await boot()
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const ghost = 'session-ghost' as SessionId
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const [first, second] = await Promise.all([
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api.sessions.history(request({ sessionId: ghost })),
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api.sessions.history(request({ sessionId: ghost })),
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])
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for (const response of [first, second]) {
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expect(response.result.ok).toBe(false)
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if (!response.result.ok) expect(response.result.error.code).toBe('session-not-found')
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}
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})
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it('paginates backwards on message boundaries with hasMore', async () => {
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const running = await boot([textResponse('a1'), textResponse('a2'), textResponse('a3')])
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const { api, ctx } = running
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const { sessionId } = expectOk(await api.sessions.create(request({})))
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const agent = ctx.agents.get(sessionId) as Agent
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for (const text of ['q1', 'q2', 'q3']) {
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const idle = waitForIdle(ctx, agent)
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agent.send([{ type: 'text', text }])
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await idle
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}
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const all = expectOk(await api.sessions.history(request({ sessionId })))
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expect(all.hasMore).toBe(false)
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const messageCount = all.events.filter(entry => entry.event.type === 'user/message' || entry.event.type === 'assistant/message').length
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expect(messageCount).toBe(6)
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const lastPage = expectOk(await api.sessions.history(request({ sessionId, maxMessages: 1 })))
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expect(lastPage.hasMore).toBe(true)
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expect(lastPage.events.filter(entry => entry.event.type === 'assistant/message')).toHaveLength(1)
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expect(lastPage.events.filter(entry => entry.event.type === 'user/message')).toHaveLength(0)
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const firstSeq = lastPage.events[0]?.event.seq as number
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const olderPage = expectOk(await api.sessions.history(request({ sessionId, beforeSeq: firstSeq, maxMessages: 2 })))
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expect(olderPage.events.at(-1)?.event.seq).toBeLessThan(firstSeq)
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expect(olderPage.hasMore).toBe(true)
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expect(olderPage.events.filter(entry => entry.event.type === 'user/message' || entry.event.type === 'assistant/message').length).toBe(2)
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})
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})
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describe('events streams', () => {
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it('mux: a pending pull wakes when a frame arrives (waiter path)', async () => {
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const running = await boot()
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const { api } = running
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const ac = new AbortController()
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const stream = api.events.mux(request({}), ac.signal)[Symbol.asyncIterator]()
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// no sessions yet: next() must pend on the queue's waiter, not the buffer
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const pending = stream.next()
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const { sessionId } = expectOk(await api.sessions.create(request({})))
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const frame = (await pending).value as RpcRequest<MuxFrame>
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expect(frame.payload).toMatchObject({ type: 'session/subscribed', sessionId })
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ac.abort()
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expect((await stream.next()).done).toBe(true)
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})
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it('lists fork lineage and announces it on the host stream', async () => {
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const running = await boot()
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const { api, ctx } = running
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const { sessionId: parent } = expectOk(await api.sessions.create(request({})))
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const ac = new AbortController()
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const stream = api.events.host(request({}), ac.signal)[Symbol.asyncIterator]()
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const child = `session-child-${String(Date.now())}` as SessionId
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const handle = await ctx.agents.create({ sessionId: child, meta: { parentSession: parent }, agentOptions: { provider: 'scripted', model: 'test-model' } })
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expect(handle.agent.id).toBe(child)
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const added = (await stream.next()).value as RpcRequest<HostFrame>
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expect(added.payload).toMatchObject({ type: 'host/session-added', sessionId: child, parentSessionId: parent })
|
|
const { items } = expectOk(await api.sessions.list(request({})))
|
|
expect(items.find(item => item.sessionId === child)?.parentSessionId).toBe(parent)
|
|
|
|
await handle.dispose()
|
|
let frame: RpcRequest<HostFrame>
|
|
do frame = (await stream.next()).value as RpcRequest<HostFrame>
|
|
while (frame.payload.type !== 'host/session-removed')
|
|
expect(frame.payload).toMatchObject({ type: 'host/session-removed', sessionId: child })
|
|
ac.abort()
|
|
})
|
|
|
|
it('mux: emits subscribed baselines, live session events, and new-session subscriptions until abort', async () => {
|
|
const running = await boot([textResponse('live')])
|
|
const { api, ctx } = running
|
|
const { sessionId } = expectOk(await api.sessions.create(request({})))
|
|
|
|
const ac = new AbortController()
|
|
const stream = api.events.mux(request({}), ac.signal)[Symbol.asyncIterator]()
|
|
const baseline = await stream.next()
|
|
expect((baseline.value as RpcRequest<MuxFrame>).payload).toMatchObject({ type: 'session/subscribed', sessionId })
|
|
|
|
const agent = ctx.agents.get(sessionId) as Agent
|
|
const idle = waitForIdle(ctx, agent)
|
|
agent.send([{ type: 'text', text: 'go' }])
|
|
await idle
|
|
const live = await stream.next()
|
|
expect((live.value as RpcRequest<MuxFrame>).payload.type).toBe('session/event')
|
|
|
|
const other = expectOk(await api.sessions.create(request({}))).sessionId
|
|
let frame: RpcRequest<MuxFrame>
|
|
do frame = (await stream.next()).value as RpcRequest<MuxFrame>
|
|
while (!(frame.payload.type === 'session/subscribed' && frame.payload.sessionId === other))
|
|
|
|
ac.abort()
|
|
expect((await stream.next()).done).toBe(true)
|
|
})
|
|
|
|
it('mux: projects durable titles after open baselines and immediately after live raw events', async () => {
|
|
const running = await boot()
|
|
const { api, ctx } = running
|
|
const { sessionId } = expectOk(await api.sessions.create(request({})))
|
|
const agent = ctx.agents.get(sessionId) as Agent
|
|
const initial = await appendTitle(ctx, agent, 'Initial title')
|
|
|
|
const ac = new AbortController()
|
|
const stream = api.events.mux(request({}), ac.signal)[Symbol.asyncIterator]()
|
|
expect((await nextMux(stream)).payload).toMatchObject({ type: 'session/subscribed', sessionId })
|
|
expect((await nextMux(stream)).payload).toEqual(expect.objectContaining({
|
|
type: 'session/title', sessionId, title: 'Initial title', eventSeq: initial.seq, updatedAt: initial.time,
|
|
}))
|
|
|
|
const revised = await appendTitle(ctx, agent, 'Revised title')
|
|
let raw: RpcRequest<MuxFrame>
|
|
do raw = await nextMux(stream)
|
|
while (!(raw.payload.type === 'session/event' && raw.payload.event.type === 'session/title'))
|
|
expect(raw.payload).toMatchObject({ type: 'session/event', sessionId, event: { seq: revised.seq } })
|
|
expect((await nextMux(stream)).payload).toEqual(expect.objectContaining({
|
|
type: 'session/title', sessionId, title: 'Revised title', eventSeq: revised.seq, updatedAt: revised.time,
|
|
}))
|
|
ac.abort()
|
|
})
|
|
|
|
it('mux: emits no title control for untitled subscriptions', async () => {
|
|
const { api } = await boot()
|
|
const first = expectOk(await api.sessions.create(request({}))).sessionId
|
|
const ac = new AbortController()
|
|
const stream = api.events.mux(request({}), ac.signal)[Symbol.asyncIterator]()
|
|
expect((await nextMux(stream)).payload).toMatchObject({ type: 'session/subscribed', sessionId: first })
|
|
|
|
const second = expectOk(await api.sessions.create(request({}))).sessionId
|
|
expect((await nextMux(stream)).payload).toMatchObject({ type: 'session/subscribed', sessionId: second })
|
|
ac.abort()
|
|
})
|
|
|
|
it('host: session lifecycle, status flips (disposed suppressed), and agent errors', async () => {
|
|
const running = await boot([textResponse('x')])
|
|
const { api, ctx } = running
|
|
const ac = new AbortController()
|
|
const stream = api.events.host(request({}), ac.signal)[Symbol.asyncIterator]()
|
|
|
|
const { sessionId } = expectOk(await api.sessions.create(request({})))
|
|
const added = await stream.next()
|
|
expect((added.value as RpcRequest<HostFrame>).payload).toMatchObject({ type: 'host/session-added', sessionId })
|
|
|
|
const agent = ctx.agents.get(sessionId) as Agent
|
|
const idle = waitForIdle(ctx, agent)
|
|
agent.send([{ type: 'text', text: 'run' }])
|
|
await idle
|
|
const runningFrame = await stream.next()
|
|
expect((runningFrame.value as RpcRequest<HostFrame>).payload).toMatchObject({ type: 'host/session-status', running: true })
|
|
const idleFrame = await stream.next()
|
|
expect((idleFrame.value as RpcRequest<HostFrame>).payload).toMatchObject({ type: 'host/session-status', running: false })
|
|
|
|
// Raw ctx.emit lacks the scope carrier the mounted invariants plugin now
|
|
// enforces; dispatch the way the loop does.
|
|
agentEvents(ctx, agent).emit('agent/error', 1, 1, new Error('boom'))
|
|
const errorFrame = await stream.next()
|
|
expect((errorFrame.value as RpcRequest<HostFrame>).payload).toMatchObject({ type: 'host/agent-error', message: 'Error: boom' })
|
|
|
|
ac.abort()
|
|
// Push-after-done: an event landing between abort and generator wind-down
|
|
// must be dropped silently, not crash the queue.
|
|
agentEvents(ctx, agent).emit('agent/error', 1, 1, new Error('late'))
|
|
expect((await stream.next()).done).toBe(true)
|
|
})
|
|
})
|
|
|
|
describe('respond stub', () => {
|
|
it('always reports not-pending (step2 registry pending)', async () => {
|
|
const { api } = await boot()
|
|
const receipt = await api.respond({ type: 'client-response', rpcId: RpcId('r'), result: { ok: true, value: null } })
|
|
expect(receipt).toEqual({ accepted: false, reason: 'not-pending' })
|
|
})
|
|
})
|