Tianyi Cui
ec0a2bb623
# Conflicts: # docs/cordis-catalog/events.md # docs/event-producer-consumer.md # docs/persistence-catalog.md # packages/core/agent-loop/src/loop.ts # packages/core/agent/README.md # website/zh-CN/api/harness/events.md
1262 lines
53 KiB
TypeScript
1262 lines
53 KiB
TypeScript
import { describe, expect, it } from 'vitest'
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import { Context } from 'cordis'
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import LlmService, { CallId, StreamChunk } from '@deepseek-ai/dsh-llm'
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import SessionStore, { SessionId, TurnEndReason } from '@deepseek-ai/dsh-session'
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import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
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import ToolRegistry, { defineTool } from '@deepseek-ai/dsh-tools'
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import AgentRegistry, { type Agent } from '@deepseek-ai/dsh-agent'
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import AgentLoop from '@deepseek-ai/dsh-agent-loop'
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import { MockAdapter, maxTokensResponse, textResponse, toolCallResponse } from './mock-adapter.ts'
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function driverDone(agent: Agent): Promise<void> {
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return (agent as Agent & { done: Promise<void> }).done
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}
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async function harness(adapter: MockAdapter, persona = '') {
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const ctx = new Context()
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await ctx.plugin(LlmService)
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await ctx.plugin(SessionStore)
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await ctx.plugin(SystemPrompt, { persona })
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await ctx.plugin(ToolRegistry)
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await ctx.plugin(AgentRegistry)
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await ctx.plugin(AgentLoop, { agents: [] })
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ctx.llm.registerAdapter(['mock'], adapter)
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return ctx
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}
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/**
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* Wait for the agent's NEXT transition to idle. Always event-based: callers
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* invoke this right after send(), when the loop hasn't woken yet (status is
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* still 'idle' synchronously), so polling the current status would lie.
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*/
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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, status) => {
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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 send(agent: Agent, text: string) {
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agent.send([{ type: 'text', text }])
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}
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describe('agent loop', () => {
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it('runs a simple turn: queued message → model → idle, with ordered events', async () => {
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const adapter = new MockAdapter([textResponse('hello there')])
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const ctx = await harness(adapter)
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const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
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// All boundaries — turn and step — are durable session events on the
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// session/event feed (no agent/* mirror). Record them in fire order to
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// assert the full boundary nesting.
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const order: string[] = []
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ctx.on('session/event', (_session, event) => {
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if (event.type === 'turn/start' || event.type === 'step/start' || event.type === 'step/end' || event.type === 'turn/end') {
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order.push(event.type)
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}
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})
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send(agent, 'hi')
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await waitForIdle(ctx, agent)
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expect(order).toEqual(['turn/start', 'step/start', 'step/end', 'turn/end'])
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const types = agent.session.events.map(e => e.type)
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// turn/start opens the turn, THEN the queued user message is recorded inside
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// it (every event is turn-enclosed), then the assembled message (carrying the
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// step's usage).
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expect(types[0]).toBe('turn/start')
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expect(types[1]).toBe('user/message')
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expect(types).toContain('assistant/message')
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const assistantMessage = agent.session.events.find(e => e.type === 'assistant/message')
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expect(assistantMessage?.type === 'assistant/message' && assistantMessage.data.usage).toEqual({ inputTokens: 10, outputTokens: 'hello there'.length })
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expect(types.at(-1)).toBe('turn/end')
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// derived history: user + assistant
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const messages = agent.session.deriveMessages()
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expect(messages.map(m => m.role)).toEqual(['user', 'assistant'])
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expect(messages[1]!.content).toEqual([{ type: 'text', text: 'hello there' }])
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})
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it('round-trips tool calls: model requests tool → executes → result in next request', async () => {
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const adapter = new MockAdapter([
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toolCallResponse('c1', 'echo', { text: 'ping' }, 'calling echo'),
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textResponse('done'),
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])
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const ctx = await harness(adapter)
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ctx.tools.register(defineTool({
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name: 'echo',
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description: 'echo back',
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parameters: { text: { type: 'string' } },
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async execute(args) {
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return [{ type: 'text', text: `echo: ${args.text}` }]
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},
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}))
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const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
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send(agent, 'use the tool')
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await waitForIdle(ctx, agent)
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// two model calls happened (tool-call step, then final step)
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expect(adapter.requests).toHaveLength(2)
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// the second request's derived history contains the tool result
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const secondMessages = adapter.requests[1]!.messages
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const toolResultMessage = secondMessages.find(m =>
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m.content.some(b => b.type === 'tool-result'))
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expect(toolResultMessage).toBeDefined()
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const block = toolResultMessage!.content.find(b => b.type === 'tool-result')!
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expect(block).toMatchObject({ toolCallId: 'c1', isError: false })
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expect((block).content).toEqual([{ type: 'text', text: 'echo: ping' }])
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// session log records call + result
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const types = agent.session.events.map(e => e.type)
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expect(types).toContain('tool/call')
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expect(types).toContain('tool/result')
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})
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it('threads a tool-attached meta (execute object return) onto the tool/result event', async () => {
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const adapter = new MockAdapter([
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toolCallResponse('c1', 'writer', { path: 'a.txt' }, 'writing'),
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textResponse('done'),
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])
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const ctx = await harness(adapter)
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// A tool that returns the { content, meta } object form: the loop must
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// persist `meta` on the tool/result event so a UI reproduces the card on replay.
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ctx.tools.register(defineTool({
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name: 'writer',
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description: 'writes a file',
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parameters: { path: { type: 'string' } },
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async execute() {
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return { content: [{ type: 'text', text: 'ok' }], meta: { diffs: [{ path: 'a.txt', oldText: null, newText: 'x' }] } }
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},
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}))
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const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
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send(agent, 'use the tool')
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await waitForIdle(ctx, agent)
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const toolResult = agent.session.events.find(e => e.type === 'tool/result')
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expect(toolResult?.type === 'tool/result' && toolResult.data.meta)
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.toEqual({ diffs: [{ path: 'a.txt', oldText: null, newText: 'x' }] })
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})
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it('renders harness identity, then the persona, then tool guidance — with {{variables}} resolved', async () => {
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const adapter = new MockAdapter([textResponse('ok')])
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// The persona is a TEMPLATE: {{model}} is the loop-registered variable
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// projecting this agent's configured model, so the model knows its own name.
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const ctx = await harness(adapter, 'You are a test agent on {{model}}.')
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ctx.systemPrompt.section({ name: 'tool:noop', order: 100, text: 'Use the noop tool wisely.' })
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ctx.tools.register(defineTool({
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name: 'noop',
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description: 'does nothing',
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parameters: {},
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async execute() {
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return []
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},
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}))
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const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
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send(agent, 'hi')
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await waitForIdle(ctx, agent)
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const request = adapter.requests[0]
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expect(request!.system).toBe('You are an AI agent powered by the DeepSeek Harness SDK.\n\nYou are a test agent on mock.\n\nUse the noop tool wisely.')
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expect(request!.tools?.map(t => t.name)).toEqual(['noop'])
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})
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it('resolves {{cwd}} from the agent session workspace (factory create with meta.cwd)', async () => {
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const adapter = new MockAdapter([textResponse('ok')])
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const ctx = await harness(adapter, 'Working in {{cwd}}.')
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const handle = await ctx.agents.create({
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sessionId: SessionId('s-cwd'),
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meta: { cwd: '/work/space' },
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agentOptions: { provider: 'mock', model: 'mock' },
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})
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const agent = handle.agent
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send(agent, 'hi')
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await waitForIdle(ctx, agent)
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expect(adapter.requests[0]!.system).toBe('You are an AI agent powered by the DeepSeek Harness SDK.\n\nWorking in /work/space.')
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})
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it('contains a strict-variable render failure: the turn errors, the loop keeps serving turns', async () => {
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// A missing cwd variable must fail one turn without preventing a later valid turn.
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const adapter = new MockAdapter([textResponse('ok after rescue')])
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const ctx = await harness(adapter, 'In {{cwd}}.')
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const errors: Error[] = []
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ctx.on('agent/error', (_agent, _turn, _step, error) => void errors.push(error))
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const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
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send(agent, 'hi')
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await waitForIdle(ctx, agent)
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expect(adapter.requests).toHaveLength(0) // the request was never sent
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expect(errors.some(e => e.message.includes('no value for this assembly'))).toBe(true)
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const turnEnd = agent.session.events.find(e => e.type === 'turn/end')
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expect(turnEnd?.type === 'turn/end' && turnEnd.data.reason.kind).toBe('error')
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// The loop survived: a waterfall listener rescues {{cwd}} and the SAME
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// agent completes a real model turn.
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ctx.on('system-prompt/assemble', async (assembly, _context, next) => {
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assembly.variables['cwd'] = '/rescued'
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return next()
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})
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send(agent, 'again')
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await waitForIdle(ctx, agent)
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expect(adapter.requests).toHaveLength(1)
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expect(adapter.requests[0]!.system).toBe('You are an AI agent powered by the DeepSeek Harness SDK.\n\nIn /rescued.')
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const turnEnds = agent.session.events.filter(e => e.type === 'turn/end')
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expect(turnEnds).toHaveLength(2)
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expect(turnEnds[1]?.type === 'turn/end' && turnEnds[1].data.reason.kind).toBe('completed')
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})
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it('supports the model-via-agent/request path with a {{model}} persona: the supplier states it via the assemble waterfall', async () => {
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// AgentOptions.model unset: the model arrives in the agent/request
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// waterfall (the loop's documented fallback — see runStep's no-model
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// error). {{model}} renders BEFORE that waterfall, so the SAME plugin
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// states the fact early on system-prompt/assemble — the owner of a
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// late-bound fact owns stating it wherever it is claimed.
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const adapter = new MockAdapter([textResponse('ok')])
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const ctx = await harness(adapter, 'You run on {{model}}.')
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ctx.on('system-prompt/assemble', async (assembly, _context, next) => {
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assembly.variables['provider'] = 'mock'
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assembly.variables['model'] = 'mock'
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return next()
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})
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ctx.on('agent/request', async (_agent, _turn, _step, config, _next) => {
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return { ...config, provider: 'mock', model: 'mock' }
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})
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const agent = ctx.agentLoop.create(SessionId('a-late-model'), {})
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send(agent, 'hi')
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await waitForIdle(ctx, agent)
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expect(adapter.requests).toHaveLength(1)
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expect(adapter.requests[0]!.model).toBe('mock')
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expect(adapter.requests[0]!.system).toBe('You are an AI agent powered by the DeepSeek Harness SDK.\n\nYou run on mock.')
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})
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it.each([
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['BigInt', { n: 1n }],
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['Map', new Map([['key', 'value']])],
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['class instance', new (class ResultMeta { x = 1 })()],
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])('normalizes non-JSON tool meta (%s) before the durable result commit', async (_kind, meta) => {
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const adapter = new MockAdapter([
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toolCallResponse('bad-meta-call', 'bad-meta', {}, 'calling'),
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textResponse('recovered'),
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])
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const ctx = await harness(adapter)
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ctx.tools.register(defineTool({
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name: 'bad-meta',
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description: 'returns invalid durable metadata',
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parameters: {},
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execute: () => Promise.resolve({ content: [{ type: 'text' as const, text: 'apparent success' }], meta }),
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}))
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const agent = ctx.agentLoop.create(SessionId('bad-meta-agent'), { provider: 'mock', model: 'mock' })
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send(agent, 'use the tool')
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await waitForIdle(ctx, agent)
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const result = agent.session.events.find(event => event.type === 'tool/result')
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expect(result?.type).toBe('tool/result')
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if (result?.type === 'tool/result') {
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expect(result.data.callId).toBe('bad-meta-call')
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expect(result.data.isError).toBe(true)
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expect(result.data.meta).toBeUndefined()
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expect(result.data.content).toEqual([{
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type: 'text',
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text: 'Error: tool result must be losslessly JSON-serializable',
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}])
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}
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// The normalized failure was durably logged and fed back to the model; the
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// turn continued normally instead of failing after an apparent success.
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expect(adapter.requests).toHaveLength(2)
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expect(JSON.stringify(adapter.requests[1]!.messages)).toContain('losslessly JSON-serializable')
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})
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it('omits the system field when a system-prompt/assemble veto empties the assembly', async () => {
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// The documented escape valve: a deployment that must drop the harness
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// openers short-circuits the assemble waterfall; the request then carries
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// NO system field at all (not an empty string).
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const adapter = new MockAdapter([textResponse('ok')])
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const ctx = await harness(adapter)
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ctx.on('system-prompt/assemble', async () => ({ sections: [], tools: [], variables: {} }))
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const agent = ctx.agentLoop.create(SessionId('a-no-system'), { provider: 'mock', model: 'mock' })
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send(agent, 'hi')
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await waitForIdle(ctx, agent)
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expect(adapter.requests).toHaveLength(1)
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expect('system' in adapter.requests[0]!).toBe(false)
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})
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it('records raw chunks for replay as assistant/chunk session events', async () => {
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const adapter = new MockAdapter([textResponse('abc')])
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const ctx = await harness(adapter)
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const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
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send(agent, 'hi')
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await waitForIdle(ctx, agent)
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const chunkEvents = agent.session.events.filter(e => e.type === 'assistant/chunk')
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// textResponse('abc') = block-start + 3 deltas + block-end + usage + finish = 7
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expect(chunkEvents).toHaveLength(7)
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// replay: chunk events alone re-assemble to the recorded assistant message
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const deltaText = chunkEvents
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.flatMap(e => e.type === 'assistant/chunk' ? [e.data.chunk] : [])
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.filter((c: StreamChunk): c is Extract<StreamChunk, { type: 'text-delta' }> => c.type === 'text-delta')
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.map(c => c.text)
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.join('')
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expect(deltaText).toBe('abc')
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})
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it('injects steering between steps and continues the turn', async () => {
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const adapter = new MockAdapter([
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toolCallResponse('c1', 'slow', {}),
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textResponse('addressed the steering'),
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])
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const ctx = await harness(adapter)
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const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
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ctx.tools.register(defineTool({
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name: 'slow',
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description: '',
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parameters: {},
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async execute() {
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// steer while the turn is running (during tool execution)
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agent.steer([{ type: 'text', text: 'change of plans' }])
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return [{ type: 'text', text: 'tool done' }]
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},
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}))
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send(agent, 'start')
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await waitForIdle(ctx, agent)
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const types = agent.session.events.map(e => e.type)
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expect(types).toContain('steering/message')
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// steering recorded before the second step's request derived its history
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const steeringSeq = agent.session.events.find(e => e.type === 'steering/message')!.seq
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const secondStepStart = agent.session.events.filter(e => e.type === 'step/start')[1]
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expect(secondStepStart).toBeDefined()
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expect(steeringSeq).toBeLessThan(secondStepStart!.seq)
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// the second model request saw the steering content
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const secondRequest = adapter.requests[1]
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const flat = JSON.stringify(secondRequest!.messages)
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expect(flat).toContain('change of plans')
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})
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it('same-tick idle steering inherits one-send-one-turn FIFO behavior', async () => {
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const adapter = new MockAdapter([textResponse('first'), textResponse('second')])
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const ctx = await harness(adapter)
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const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
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const idle = waitForIdle(ctx, agent)
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agent.steer([{ type: 'text', text: 'first idle steer' }])
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agent.steer([{ type: 'text', text: 'second idle steer' }])
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await idle
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expect(agent.session.events.filter(event => event.type === 'turn/start')).toHaveLength(2)
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expect(agent.session.events
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.filter(event => event.type === 'user/message')
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.map(event => event.data.content)).toEqual([
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[{ type: 'text', text: 'first idle steer' }],
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[{ type: 'text', text: 'second idle steer' }],
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])
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expect(adapter.requests).toHaveLength(2)
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})
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it('inject() while idle wraps context in a one-shot turn, visible to the next request', async () => {
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const adapter = new MockAdapter([textResponse('ok')])
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const ctx = await harness(adapter)
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const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
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agent.inject([{ type: 'text', text: 'file changed: a.ts' }], { source: { kind: 'plugin', plugin: 'watcher' } })
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// The idle inject records a self-contained turn (turn/start → context/message
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// → turn/end) so the event stays turn-enclosed, but does NOT run the model.
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await new Promise(r => setTimeout(r, 20))
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expect(agent.status).toBe('idle')
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expect(adapter.requests).toHaveLength(0)
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const injectedTurn = agent.session.events.filter(e => e.type === 'turn/start')
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expect(injectedTurn).toHaveLength(1)
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const it0 = injectedTurn[0]!
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expect(it0.type === 'turn/start' && it0.data.trigger.kind).toBe('injection')
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expect(agent.session.events.at(-1)!.type).toBe('turn/end') // turn-enclosed
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send(agent, 'go')
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await waitForIdle(ctx, agent)
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const flat = JSON.stringify(adapter.requests[0]!.messages)
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expect(flat).toContain('file changed: a.ts')
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expect(flat).not.toContain('<context source=')
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})
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it('inject() persists structured context content verbatim with durable hidden meta', async () => {
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const adapter = new MockAdapter([textResponse('ok')])
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const ctx = await harness(adapter)
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const agent = ctx.agentLoop.create(SessionId('raw-context'), { provider: 'mock', model: 'mock' })
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const text = '<system-reminder>Additional instructions from: pkg/AGENTS.md</system-reminder>'
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const meta = {
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kind: 'workspace-instructions',
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version: 1,
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changes: [{ action: 'set', scope: 'pkg', path: 'pkg/AGENTS.md', digest: 'abc123' }],
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}
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agent.inject([{ type: 'text', text }], {
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source: { kind: 'plugin', plugin: 'workspace-context' },
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meta,
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})
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send(agent, 'go')
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await waitForIdle(ctx, agent)
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|
|
const contextEvent = agent.session.events.find(event => event.type === 'context/message')
|
|
expect(contextEvent?.type === 'context/message' && contextEvent.data).toMatchObject({ meta })
|
|
const requestText = JSON.stringify(adapter.requests[0]!.messages)
|
|
expect(requestText).toContain('Additional instructions from: pkg/AGENTS.md')
|
|
expect(requestText).not.toContain('<context source=')
|
|
})
|
|
|
|
it('defers inject() during tool execution until after the tool result', async () => {
|
|
const adapter = new MockAdapter([
|
|
toolCallResponse('c1', 'noticer', {}, 'calling'),
|
|
textResponse('done'),
|
|
])
|
|
const ctx = await harness(adapter)
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
let visibleDuringTool = false
|
|
const meta = { kind: 'deferred-test', version: 1 }
|
|
ctx.tools.register(defineTool({
|
|
name: 'noticer',
|
|
description: 'injects a notice',
|
|
parameters: {},
|
|
async execute() {
|
|
await Promise.resolve()
|
|
const first = { type: 'text' as const, text: 'mid-turn notice' }
|
|
agent.inject([first], {
|
|
source: { kind: 'plugin', plugin: 'x' },
|
|
meta,
|
|
})
|
|
first.text = 'mutated after inject'
|
|
agent.inject([{ type: 'text', text: 'second notice' }], { source: { kind: 'plugin', plugin: 'x' } })
|
|
visibleDuringTool = agent.session.events.some(e => e.type === 'context/message')
|
|
return [{ type: 'text', text: 'ok' }]
|
|
},
|
|
}))
|
|
|
|
send(agent, 'go')
|
|
await waitForIdle(ctx, agent)
|
|
|
|
expect(visibleDuringTool).toBe(false)
|
|
|
|
// The injection stays in the open turn, but its user-role context cannot
|
|
// split the assistant tool call from the provider's tool-result message.
|
|
const turnStarts = agent.session.events.filter(e => e.type === 'turn/start')
|
|
expect(turnStarts).toHaveLength(1)
|
|
const ts0 = turnStarts[0]!
|
|
expect(ts0.type === 'turn/start' && ts0.data.trigger.kind).toBe('message')
|
|
const result = agent.session.events.find(e => e.type === 'tool/result')!
|
|
const contexts = agent.session.events.filter(e => e.type === 'context/message')
|
|
expect(contexts).toHaveLength(2)
|
|
expect(result.seq).toBeLessThan(contexts[0]!.seq)
|
|
expect(contexts[0]?.type === 'context/message' && contexts[0].data).toMatchObject({
|
|
meta,
|
|
})
|
|
expect(contexts.flatMap(event => event.type === 'context/message' ? event.data.content : []))
|
|
.toEqual([
|
|
{ type: 'text', text: 'mid-turn notice' },
|
|
{ type: 'text', text: 'second notice' },
|
|
])
|
|
|
|
const secondRequest = adapter.requests[1]!.messages
|
|
const resultIndex = secondRequest.findIndex(message =>
|
|
message.content.some(block => block.type === 'tool-result'))
|
|
const contextIndexes = secondRequest.flatMap((message, index) =>
|
|
message.content.some(block => block.type === 'text'
|
|
&& (block.text.includes('mid-turn notice') || block.text.includes('second notice')))
|
|
? [index]
|
|
: [])
|
|
expect(resultIndex).toBeGreaterThanOrEqual(0)
|
|
expect(contextIndexes).toHaveLength(2)
|
|
expect(contextIndexes.every(index => index > resultIndex)).toBe(true)
|
|
})
|
|
|
|
it('rejects non-JSON context before it enters the active tool-batch FIFO', async () => {
|
|
const adapter = new MockAdapter([
|
|
toolCallResponse('c1', 'invalid-injector', {}, 'calling'),
|
|
textResponse('done'),
|
|
])
|
|
const ctx = await harness(adapter)
|
|
const agent = ctx.agentLoop.create(SessionId('invalid-context'), { provider: 'mock', model: 'mock' })
|
|
ctx.tools.register(defineTool({
|
|
name: 'invalid-injector',
|
|
description: 'attempts an invalid context injection',
|
|
parameters: {},
|
|
async execute() {
|
|
expect(() => {
|
|
agent.inject([{ type: 'text', text: 'invalid' }], {
|
|
source: { kind: 'plugin', plugin: 'test' },
|
|
meta: { bigint: 1n } as never,
|
|
})
|
|
}).toThrow('agent context must be losslessly JSON-serializable')
|
|
return [{ type: 'text', text: 'rejected invalid context' }]
|
|
},
|
|
}))
|
|
|
|
send(agent, 'go')
|
|
await waitForIdle(ctx, agent)
|
|
|
|
expect(agent.session.events.some(event => event.type === 'context/message')).toBe(false)
|
|
})
|
|
|
|
it('agent/turn-continuation can force-continue (/loop pattern) and force-stop', async () => {
|
|
// force-continue: model never calls tools, but a plugin forces 3 steps
|
|
const adapter = new MockAdapter([
|
|
textResponse('step 1'),
|
|
textResponse('step 2'),
|
|
textResponse('step 3'),
|
|
])
|
|
const ctx = await harness(adapter)
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
let steps = 0
|
|
ctx.on('session/event', (_session, event) => { if (event.type === 'step/end') steps++ })
|
|
ctx.on('agent/turn-continuation', async (_agent, _turn, _defaultDecision, next) => {
|
|
if (steps < 3) return { action: 'continue' as const }
|
|
return next()
|
|
})
|
|
|
|
send(agent, 'go')
|
|
await waitForIdle(ctx, agent)
|
|
expect(steps).toBe(3)
|
|
expect(adapter.requests).toHaveLength(3)
|
|
})
|
|
|
|
it('agent/turn-continuation can veto continuation despite tool calls (budget-guard pattern)', async () => {
|
|
const adapter = new MockAdapter([toolCallResponse('c1', 'echo', { text: 'x' })])
|
|
const ctx = await harness(adapter)
|
|
ctx.tools.register(defineTool({
|
|
name: 'echo',
|
|
description: '',
|
|
parameters: { text: { type: 'string' } },
|
|
async execute(args) {
|
|
return [{ type: 'text', text: String(args.text) }]
|
|
},
|
|
}))
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
ctx.on('agent/turn-continuation', async () => ({ action: 'stop' }) as const)
|
|
|
|
send(agent, 'go')
|
|
await waitForIdle(ctx, agent)
|
|
// only one model call despite the tool call requesting a follow-up
|
|
expect(adapter.requests).toHaveLength(1)
|
|
// tool still executed before the decision
|
|
expect(agent.session.events.some(e => e.type === 'tool/result')).toBe(true)
|
|
})
|
|
|
|
it('agent/request waterfall switches models by returning a replacement config; the switch is logged', async () => {
|
|
const adapter = new MockAdapter([textResponse('ok')])
|
|
const ctx = await harness(adapter)
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
ctx.on('agent/request', async (_agent, _turn, _step, config, _next) => {
|
|
// The seed is frozen — config is not a mutable per-call knob; a switch
|
|
// is proposed by returning a replacement, and the loop logs it.
|
|
expect(Object.isFrozen(config)).toBe(true)
|
|
expect(() => { (config as { model: string }).model = 'other-model' }).toThrow(TypeError)
|
|
return { ...config, model: 'other-model' }
|
|
})
|
|
|
|
send(agent, 'hi')
|
|
await waitForIdle(ctx, agent)
|
|
expect(adapter.requests[0]!.model).toBe('other-model')
|
|
// The header event records what the request ACTUALLY used — the switch is
|
|
// a reconstructable fact, not silent drift.
|
|
const headerEvent = agent.session.events.find(e => e.type === 'request/header')
|
|
expect(headerEvent?.type === 'request/header' && headerEvent.data.header.config.model).toBe('other-model')
|
|
})
|
|
|
|
it('agent/pre-step fires once per step before the step is opened', async () => {
|
|
const adapter = new MockAdapter([
|
|
toolCallResponse('c1', 'echo', {}, 'calling echo'),
|
|
textResponse('done'),
|
|
])
|
|
const ctx = await harness(adapter)
|
|
ctx.tools.register(defineTool({
|
|
name: 'echo', description: 'echo', parameters: {},
|
|
async execute() { return [{ type: 'text', text: 'echoed' }] },
|
|
}))
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
const fires: { turn: number; step: number; signal: AbortSignal }[] = []
|
|
ctx.on('agent/pre-step', (subject, turn, step, signal) => {
|
|
if (subject === agent) fires.push({ turn, step, signal })
|
|
})
|
|
|
|
send(agent, 'go')
|
|
await waitForIdle(ctx, agent)
|
|
|
|
expect(fires.map(({ turn, step }) => ({ turn, step }))).toEqual([
|
|
{ turn: 1, step: 1 },
|
|
{ turn: 1, step: 2 },
|
|
])
|
|
expect(fires.every(({ signal }) => signal instanceof AbortSignal)).toBe(true)
|
|
})
|
|
|
|
it('agent/pre-step fires BEFORE the step it precedes opens (events land outside the step)', async () => {
|
|
// The append lands before step/start, yet derive happens afterwards and the
|
|
// same step's request must include it.
|
|
const adapter = new MockAdapter([textResponse('ok')])
|
|
const ctx = await harness(adapter)
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
let injected = false
|
|
ctx.on('agent/pre-step', (subject) => {
|
|
if (subject === agent && !injected) {
|
|
injected = true
|
|
subject.session.append('context/message', {
|
|
content: [{ type: 'text', text: 'INJECTED-IN-PRE-STEP' }],
|
|
source: { kind: 'plugin', plugin: 'test' },
|
|
}, { surfaceOp: 'append' })
|
|
}
|
|
})
|
|
|
|
send(agent, 'go')
|
|
await waitForIdle(ctx, agent)
|
|
|
|
// The adapter's request includes the node injected during pre-step (derive
|
|
// reflects it).
|
|
const text = JSON.stringify(adapter.requests[0]!.messages)
|
|
expect(text).toContain('INJECTED-IN-PRE-STEP')
|
|
|
|
// And the injected event sits BEFORE the first step/start in the log —
|
|
// the seam fired outside the step.
|
|
const events = agent.session.events
|
|
const injectedSeq = events.find(e => e.type === 'context/message')!.seq
|
|
const firstStepStartSeq = events.find(e => e.type === 'step/start')!.seq
|
|
expect(injectedSeq).toBeLessThan(firstStepStartSeq)
|
|
})
|
|
|
|
it('a throwing agent/pre-step listener ends the turn (error), not the loop', async () => {
|
|
// Before step/start, a pre-step throw reaches the turn catch: no step needs
|
|
// closing, the turn records error, and the loop remains available.
|
|
const adapter = new MockAdapter([textResponse('second turn ok')])
|
|
const ctx = await harness(adapter)
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
let throwOnce = true
|
|
ctx.on('agent/pre-step', () => {
|
|
if (throwOnce) { throwOnce = false; throw new Error('boom in pre-step') }
|
|
})
|
|
|
|
const errors: Error[] = []
|
|
ctx.on('agent/error', (_a, _t, _s, error) => void errors.push(error))
|
|
|
|
send(agent, 'first')
|
|
await waitForIdle(ctx, agent)
|
|
// The first turn failed at step 1 (no model call happened), surfaced via
|
|
// agent/error, with the durable failure on turn/end.reason.
|
|
expect(errors).toHaveLength(1)
|
|
expect(errors[0]!.message).toContain('boom in pre-step')
|
|
expect(adapter.requests.length).toBe(0)
|
|
const firstTurnEnd = agent.session.events.find(e => e.type === 'turn/end')
|
|
expect(firstTurnEnd?.type === 'turn/end' && firstTurnEnd.data.reason).toMatchObject({ kind: 'error', step: 1 })
|
|
// The step opened-and-closed count stays balanced even though it never ran.
|
|
const types = agent.session.events.map(e => e.type)
|
|
expect(types.filter(t => t === 'step/start').length).toBe(types.filter(t => t === 'step/end').length)
|
|
|
|
// The loop survived: a second prompt runs a normal completed turn.
|
|
send(agent, 'second')
|
|
await waitForIdle(ctx, agent)
|
|
expect(adapter.requests.length).toBe(1)
|
|
const lastTurnEnd = agent.session.events.findLast(e => e.type === 'turn/end')
|
|
expect(lastTurnEnd?.type === 'turn/end' && lastTurnEnd.data.reason).toEqual({ kind: 'completed' })
|
|
})
|
|
|
|
it('cancel() mid-stream ends the turn with reason aborted', async () => {
|
|
const adapter = new MockAdapter(['hang'])
|
|
const ctx = await harness(adapter)
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
const reasons: TurnEndReason[] = []
|
|
ctx.on('session/event', (_s, event) => { if (event.type === 'turn/end') reasons.push(event.data.reason) })
|
|
|
|
send(agent, 'go')
|
|
// wait until the stream is hanging, then cancel
|
|
await new Promise(r => setTimeout(r, 30))
|
|
expect(agent.status).toBe('running')
|
|
agent.cancel('user interrupt')
|
|
await waitForIdle(ctx, agent)
|
|
|
|
expect(reasons).toEqual([{ kind: 'aborted', reason: 'user interrupt' }])
|
|
})
|
|
|
|
it('surfaces max-tokens as the turn-end reason when the last step is cut off', async () => {
|
|
// A single step that ends with a max-tokens finish (no tool calls): the
|
|
// turn stops by default and ends max-tokens, not completed.
|
|
const adapter = new MockAdapter([maxTokensResponse('truncat')])
|
|
const ctx = await harness(adapter)
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
const reasons: TurnEndReason[] = []
|
|
ctx.on('session/event', (_s, event) => { if (event.type === 'turn/end') reasons.push(event.data.reason) })
|
|
|
|
send(agent, 'go')
|
|
await waitForIdle(ctx, agent)
|
|
|
|
expect(adapter.requests).toHaveLength(1)
|
|
expect(reasons).toEqual([{ kind: 'max-tokens' }])
|
|
// Assert the durable row, not only the live listener.
|
|
const turnEnd = agent.session.events.findLast(e => e.type === 'turn/end')
|
|
expect(turnEnd!.data.reason).toEqual({ kind: 'max-tokens' })
|
|
})
|
|
|
|
it('a max-tokens step earlier in a turn still surfaces as max-tokens after a later completed step', async () => {
|
|
// Step 1 is cut off (max-tokens, no tool calls → would stop by default), so continuation
|
|
// must be FORCED to reach step 2 which finishes normally (stop).
|
|
const adapter = new MockAdapter([
|
|
maxTokensResponse('first half'),
|
|
textResponse('second half'),
|
|
])
|
|
const ctx = await harness(adapter)
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
let steps = 0
|
|
ctx.on('session/event', (_session, event) => { if (event.type === 'step/end') steps++ })
|
|
// Force exactly one continuation (step 1 → step 2), then defer to default
|
|
// (step 2 is a plain stop with no tool calls → stops).
|
|
ctx.on('agent/turn-continuation', async (_agent, _turn, _defaultDecision, next) => {
|
|
if (steps < 2) return { action: 'continue' as const }
|
|
return next()
|
|
})
|
|
|
|
const reasons: TurnEndReason[] = []
|
|
ctx.on('session/event', (_s, event) => { if (event.type === 'turn/end') reasons.push(event.data.reason) })
|
|
|
|
send(agent, 'go')
|
|
await waitForIdle(ctx, agent)
|
|
|
|
expect(steps).toBe(2)
|
|
expect(adapter.requests).toHaveLength(2)
|
|
expect(adapter.requests[1]!.messages).toEqual([
|
|
{ role: 'user', content: [{ type: 'text', text: 'go' }] },
|
|
{ role: 'assistant', content: [{ type: 'text', text: 'first half' }], provenance: { provider: 'mock', model: 'mock' } },
|
|
])
|
|
expect(reasons).toEqual([{ kind: 'max-tokens' }])
|
|
})
|
|
|
|
it('a completed step after no max-tokens keeps the turn completed (max-tokens does not leak across turns)', async () => {
|
|
// Two consecutive turns: turn 1 is cut off (max-tokens), turn 2 is a clean
|
|
// stop. The per-turn reason must be independent — turn 2 ends completed.
|
|
const adapter = new MockAdapter([maxTokensResponse('cut'), textResponse('clean')])
|
|
const ctx = await harness(adapter)
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
const reasons: TurnEndReason[] = []
|
|
ctx.on('session/event', (_s, event) => { if (event.type === 'turn/end') reasons.push(event.data.reason) })
|
|
|
|
send(agent, 'first')
|
|
await waitForIdle(ctx, agent)
|
|
send(agent, 'second')
|
|
await waitForIdle(ctx, agent)
|
|
|
|
expect(reasons).toEqual([{ kind: 'max-tokens' }, { kind: 'completed' }])
|
|
})
|
|
|
|
it('does not dispatch tool calls from a max-tokens-truncated step', async () => {
|
|
const callId = CallId('c1')
|
|
const adapter = new MockAdapter([[
|
|
{ type: 'block-start', index: 0, blockType: 'tool-call' },
|
|
{ type: 'tool-call-delta', index: 0, id: callId, name: 'echo', argumentsDelta: '{"text":"x"}' },
|
|
{ type: 'block-end', index: 0, block: { type: 'tool-call', id: callId, name: 'echo', arguments: '{"text":"x"}' } },
|
|
{ type: 'usage', usage: { inputTokens: 10, outputTokens: 5 } },
|
|
{ type: 'finish', reason: { kind: 'max-tokens' } },
|
|
]])
|
|
const ctx = await harness(adapter)
|
|
let executions = 0
|
|
ctx.tools.register(defineTool({
|
|
name: 'echo',
|
|
description: '',
|
|
parameters: { text: { type: 'string' } },
|
|
async execute() {
|
|
executions += 1
|
|
return [{ type: 'text', text: 'should not run' }]
|
|
},
|
|
}))
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
const reasons: TurnEndReason[] = []
|
|
ctx.on('session/event', (_s, event) => { if (event.type === 'turn/end') reasons.push(event.data.reason) })
|
|
|
|
send(agent, 'go')
|
|
await waitForIdle(ctx, agent)
|
|
|
|
expect(executions).toBe(0)
|
|
expect(agent.session.events.some(e => e.type === 'tool/call')).toBe(false)
|
|
expect(agent.session.deriveMessages()).toEqual([{ role: 'user', content: [{ type: 'text', text: 'go' }] }])
|
|
expect(reasons).toEqual([{ kind: 'max-tokens' }])
|
|
// Empty content still needs an assistant/message to carry usage; derivation
|
|
// skips that host so it does not create a spurious assistant turn.
|
|
const assistantMessage = agent.session.events.find(e => e.type === 'assistant/message')
|
|
expect(assistantMessage?.type === 'assistant/message' && assistantMessage.data).toEqual({
|
|
turn: 1, step: 1, content: [], provenance: { provider: 'mock', model: 'mock' }, usage: { inputTokens: 10, outputTokens: 5 },
|
|
})
|
|
})
|
|
|
|
it('appends an empty completion anchor for a max-tokens step with no usage', async () => {
|
|
// The truncated tool call is dropped from durable content, while the
|
|
// successful provider call still needs an exact replay anchor.
|
|
const callId = CallId('c1')
|
|
const adapter = new MockAdapter([[
|
|
{ type: 'block-start', index: 0, blockType: 'tool-call' },
|
|
{ type: 'tool-call-delta', index: 0, id: callId, name: 'echo', argumentsDelta: '{"text":"x"}' },
|
|
{ type: 'block-end', index: 0, block: { type: 'tool-call', id: callId, name: 'echo', arguments: '{"text":"x"}' } },
|
|
{ type: 'finish', reason: { kind: 'max-tokens' } },
|
|
]])
|
|
const ctx = await harness(adapter)
|
|
ctx.tools.register(defineTool({
|
|
name: 'echo',
|
|
description: '',
|
|
parameters: { text: { type: 'string' } },
|
|
async execute() { return [{ type: 'text', text: 'should not run' }] },
|
|
}))
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
const reasons: TurnEndReason[] = []
|
|
ctx.on('session/event', (_s, event) => { if (event.type === 'turn/end') reasons.push(event.data.reason) })
|
|
|
|
send(agent, 'go')
|
|
await waitForIdle(ctx, agent)
|
|
|
|
expect(reasons).toEqual([{ kind: 'max-tokens' }])
|
|
const assistant = agent.session.events.find(e => e.type === 'assistant/message')!
|
|
expect(assistant.type === 'assistant/message' && assistant.data).toEqual({
|
|
turn: 1,
|
|
step: 1,
|
|
content: [],
|
|
provenance: { provider: 'mock', model: 'mock' },
|
|
})
|
|
expect(assistant.sourceEventSeqs?.length).toBeGreaterThan(0)
|
|
expect(agent.session.deriveMessages()).toEqual([{ role: 'user', content: [{ type: 'text', text: 'go' }] }])
|
|
})
|
|
|
|
it('appends an empty completion anchor for a normal stop with no usage', async () => {
|
|
// A clean content-less call stays absent from derived messages but remains
|
|
// a durable successful-call boundary for replay consumers.
|
|
const adapter = new MockAdapter([[{ type: 'finish', reason: { kind: 'stop' } }]])
|
|
const ctx = await harness(adapter)
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
const reasons: TurnEndReason[] = []
|
|
ctx.on('session/event', (_s, event) => { if (event.type === 'turn/end') reasons.push(event.data.reason) })
|
|
|
|
send(agent, 'go')
|
|
await waitForIdle(ctx, agent)
|
|
|
|
expect(reasons).toEqual([{ kind: 'completed' }])
|
|
const assistant = agent.session.events.find(e => e.type === 'assistant/message')!
|
|
expect(assistant.type === 'assistant/message' && assistant.data).toEqual({
|
|
turn: 1,
|
|
step: 1,
|
|
content: [],
|
|
provenance: { provider: 'mock', model: 'mock' },
|
|
})
|
|
expect(assistant.sourceEventSeqs?.length).toBe(1)
|
|
expect(agent.session.deriveMessages()).toEqual([{ role: 'user', content: [{ type: 'text', text: 'go' }] }])
|
|
})
|
|
|
|
it('keeps safe max-tokens assistant content while dropping truncated tool calls', async () => {
|
|
const callId = CallId('c1')
|
|
const adapter = new MockAdapter([[
|
|
{ type: 'block-start', index: 0, blockType: 'text' },
|
|
{ type: 'text-delta', index: 0, text: 'partial text' },
|
|
{ type: 'block-end', index: 0, block: { type: 'text', text: 'partial text' } },
|
|
{ type: 'block-start', index: 1, blockType: 'tool-call' },
|
|
{ type: 'tool-call-delta', index: 1, id: callId, name: 'echo', argumentsDelta: '{"text"' },
|
|
{ type: 'finish', reason: { kind: 'max-tokens' } },
|
|
]])
|
|
const ctx = await harness(adapter)
|
|
let stepResults = 0
|
|
ctx.on('agent/step-result', async (_agent, _turn, _step, message, next) => {
|
|
stepResults += 1
|
|
expect(message.content).toEqual([{ type: 'text', text: 'partial text' }])
|
|
return next()
|
|
})
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
send(agent, 'go')
|
|
await waitForIdle(ctx, agent)
|
|
|
|
expect(stepResults).toBe(1)
|
|
expect(agent.session.events.some(e => e.type === 'tool/call')).toBe(false)
|
|
expect(agent.session.deriveMessages()).toEqual([
|
|
{ role: 'user', content: [{ type: 'text', text: 'go' }] },
|
|
{ role: 'assistant', content: [{ type: 'text', text: 'partial text' }], provenance: { provider: 'mock', model: 'mock' } },
|
|
])
|
|
})
|
|
|
|
it('contains a step/end observer failure without changing continuation', async () => {
|
|
const adapter = new MockAdapter([
|
|
toolCallResponse('c1', 'echo', { text: 'x' }),
|
|
textResponse('continued after tool call'),
|
|
])
|
|
const ctx = await harness(adapter)
|
|
ctx.tools.register(defineTool({
|
|
name: 'echo',
|
|
description: '',
|
|
parameters: { text: { type: 'string' } },
|
|
async execute(args) {
|
|
return [{ type: 'text', text: String(args.text) }]
|
|
},
|
|
}))
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
let threw = false
|
|
// Post-commit session observers cannot control the loop. The tool call still
|
|
// drives the second model request, and the turn completes normally.
|
|
ctx.on('session/event', (_session, event) => {
|
|
if (event.type === 'step/end' && !threw) { threw = true; throw new Error('bad step/end listener') }
|
|
})
|
|
|
|
send(agent, 'go')
|
|
await waitForIdle(ctx, agent)
|
|
|
|
expect(adapter.requests).toHaveLength(2)
|
|
const turnEnd = agent.session.events.findLast(e => e.type === 'turn/end')
|
|
expect(turnEnd?.type === 'turn/end' && turnEnd.data.reason.kind).toBe('completed')
|
|
})
|
|
|
|
it('keeps same-tick sends in separate turns and checkpoints before the next starts', async () => {
|
|
const adapter = new MockAdapter([textResponse('first answer'), textResponse('second answer')])
|
|
const ctx = await harness(adapter)
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
const firstFlush = Promise.withResolvers<undefined>()
|
|
const releaseFirstFlush = Promise.withResolvers<undefined>()
|
|
let flushes = 0
|
|
ctx.on('session/flush', async (session) => {
|
|
if (session !== agent.session) return
|
|
flushes += 1
|
|
if (flushes === 1) {
|
|
firstFlush.resolve(undefined)
|
|
await releaseFirstFlush.promise
|
|
}
|
|
})
|
|
|
|
const turns: number[] = []
|
|
ctx.on('session/event', (session, event) => {
|
|
if (session === agent.session && event.type === 'turn/start') turns.push(event.data.turn)
|
|
})
|
|
|
|
const idle = waitForIdle(ctx, agent)
|
|
send(agent, 'first message')
|
|
send(agent, 'second message')
|
|
|
|
await firstFlush.promise
|
|
expect(turns).toEqual([1])
|
|
expect(adapter.requests).toHaveLength(1)
|
|
|
|
releaseFirstFlush.resolve(undefined)
|
|
await idle
|
|
|
|
expect(turns).toEqual([1, 2])
|
|
expect(flushes).toBe(2)
|
|
expect(adapter.requests).toHaveLength(2)
|
|
expect(JSON.stringify(adapter.requests[1]!.messages)).toContain('first answer')
|
|
expect(JSON.stringify(adapter.requests[1]!.messages)).toContain('second message')
|
|
})
|
|
|
|
it('holds a turn-end listener send behind the closing turn checkpoint', async () => {
|
|
const adapter = new MockAdapter([textResponse('first answer'), textResponse('second answer')])
|
|
const ctx = await harness(adapter)
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
const firstFlush = Promise.withResolvers<undefined>()
|
|
const releaseFirstFlush = Promise.withResolvers<undefined>()
|
|
let flushes = 0
|
|
ctx.on('session/flush', async (session) => {
|
|
if (session !== agent.session) return
|
|
flushes += 1
|
|
if (flushes === 1) {
|
|
firstFlush.resolve(undefined)
|
|
await releaseFirstFlush.promise
|
|
}
|
|
})
|
|
|
|
const turns: number[] = []
|
|
const statuses: string[] = []
|
|
ctx.on('agent/status', (subject, status) => {
|
|
if (subject === agent) statuses.push(status)
|
|
})
|
|
ctx.on('session/event', (session, event) => {
|
|
if (session !== agent.session) return
|
|
if (event.type === 'turn/start') turns.push(event.data.turn)
|
|
if (event.type === 'turn/end' && event.data.turn === 1) send(agent, 'turn-end listener message')
|
|
})
|
|
|
|
const idle = waitForIdle(ctx, agent)
|
|
send(agent, 'first message')
|
|
await firstFlush.promise
|
|
|
|
expect(turns).toEqual([1])
|
|
expect(adapter.requests).toHaveLength(1)
|
|
|
|
releaseFirstFlush.resolve(undefined)
|
|
await idle
|
|
|
|
expect(turns).toEqual([1, 2])
|
|
expect(statuses).toEqual(['running', 'idle'])
|
|
expect(adapter.requests).toHaveLength(2)
|
|
expect(JSON.stringify(adapter.requests[1]!.messages)).toContain('first answer')
|
|
expect(JSON.stringify(adapter.requests[1]!.messages)).toContain('turn-end listener message')
|
|
})
|
|
|
|
it('keeps a reentrant agent/queued send as the next independent turn', async () => {
|
|
const adapter = new MockAdapter([textResponse('first'), textResponse('second')])
|
|
const ctx = await harness(adapter)
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
let nested = false
|
|
ctx.on('agent/queued', (subject) => {
|
|
if (subject !== agent || nested) return
|
|
nested = true
|
|
send(agent, 'queued listener message')
|
|
})
|
|
|
|
const idle = waitForIdle(ctx, agent)
|
|
send(agent, 'outer message')
|
|
await idle
|
|
|
|
const turns = agent.session.events.filter(event => event.type === 'turn/start')
|
|
const messages = agent.session.events
|
|
.filter(event => event.type === 'user/message')
|
|
.map(event => event.data.content)
|
|
expect(turns).toHaveLength(2)
|
|
expect(messages).toEqual([
|
|
[{ type: 'text', text: 'outer message' }],
|
|
[{ type: 'text', text: 'queued listener message' }],
|
|
])
|
|
})
|
|
|
|
it('preserves independent turn sources across an adjacent microtask send', async () => {
|
|
const adapter = new MockAdapter([textResponse('first'), textResponse('second')])
|
|
const ctx = await harness(adapter)
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
const idle = waitForIdle(ctx, agent)
|
|
agent.send([{ type: 'text', text: 'user message' }])
|
|
await Promise.resolve()
|
|
agent.send(
|
|
[{ type: 'text', text: 'plugin message' }],
|
|
{ source: { kind: 'plugin', plugin: 'test' } },
|
|
)
|
|
await idle
|
|
|
|
const triggers = agent.session.events
|
|
.filter(event => event.type === 'turn/start')
|
|
.map(event => event.data.trigger)
|
|
const sources = agent.session.events
|
|
.filter(event => event.type === 'user/message')
|
|
.map(event => event.data.source)
|
|
expect(triggers).toEqual([
|
|
{ kind: 'message', source: { kind: 'user' } },
|
|
{ kind: 'message', source: { kind: 'plugin', plugin: 'test' } },
|
|
])
|
|
expect(sources).toEqual([
|
|
{ kind: 'user' },
|
|
{ kind: 'plugin', plugin: 'test' },
|
|
])
|
|
})
|
|
|
|
it('keeps a session-listener send after dequeue in the following turn', async () => {
|
|
const adapter = new MockAdapter([textResponse('first'), textResponse('second')])
|
|
const ctx = await harness(adapter)
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
const turns: number[] = []
|
|
ctx.on('session/event', (_s, event) => { if (event.type === 'turn/start') turns.push(event.data.turn) })
|
|
|
|
// queue two messages while idle — first starts turn 1 immediately;
|
|
// queue the second during turn 1 when the first assistant chunk streams
|
|
let queued = false
|
|
ctx.on('session/event', (_s, event) => {
|
|
if (event.type === 'assistant/chunk' && !queued) {
|
|
queued = true
|
|
send(agent, 'second message')
|
|
}
|
|
})
|
|
|
|
send(agent, 'first message')
|
|
await waitForIdle(ctx, agent)
|
|
|
|
expect(turns).toEqual([1, 2])
|
|
expect(adapter.requests).toHaveLength(2)
|
|
expect(JSON.stringify(adapter.requests[1]!.messages)).toContain('first')
|
|
expect(JSON.stringify(adapter.requests[1]!.messages)).toContain('second message')
|
|
})
|
|
|
|
it('keeps a model-adapter callback send in the following turn', async () => {
|
|
const agentRef: { current?: Agent } = {}
|
|
const adapter = new MockAdapter([
|
|
() => {
|
|
const agent = agentRef.current
|
|
if (agent === undefined) throw new Error('model callback ran before agent setup')
|
|
send(agent, 'model callback message')
|
|
return textResponse('first')
|
|
},
|
|
textResponse('second'),
|
|
])
|
|
const ctx = await harness(adapter)
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
agentRef.current = agent
|
|
|
|
const idle = waitForIdle(ctx, agent)
|
|
send(agent, 'outer message')
|
|
await idle
|
|
|
|
const messages = agent.session.events
|
|
.filter(event => event.type === 'user/message')
|
|
.map(event => event.data.content)
|
|
expect(agent.session.events.filter(event => event.type === 'turn/start')).toHaveLength(2)
|
|
expect(messages).toEqual([
|
|
[{ type: 'text', text: 'outer message' }],
|
|
[{ type: 'text', text: 'model callback message' }],
|
|
])
|
|
})
|
|
|
|
it('awaits session/flush at turn end (persistence checkpoint)', async () => {
|
|
const adapter = new MockAdapter([textResponse('ok')])
|
|
const ctx = await harness(adapter)
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
let flushed = 0
|
|
let flushedBeforeIdle = false
|
|
ctx.on('session/flush', async (session) => {
|
|
await new Promise(r => setTimeout(r, 10))
|
|
flushed++
|
|
flushedBeforeIdle = agent.status !== 'idle'
|
|
void session
|
|
})
|
|
|
|
send(agent, 'hi')
|
|
await waitForIdle(ctx, agent)
|
|
expect(flushed).toBe(1)
|
|
expect(flushedBeforeIdle).toBe(true)
|
|
})
|
|
|
|
it('errors from the model surface as agent/error and end the turn', async () => {
|
|
const adapter = new MockAdapter([]) // script exhausted → throws
|
|
const ctx = await harness(adapter)
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
|
|
const errors: Error[] = []
|
|
const reasons: TurnEndReason[] = []
|
|
ctx.on('agent/error', (_agent, _turn, _step, error) => void errors.push(error))
|
|
ctx.on('session/event', (_s, event) => { if (event.type === 'turn/end') reasons.push(event.data.reason) })
|
|
|
|
send(agent, 'hi')
|
|
await waitForIdle(ctx, agent)
|
|
|
|
expect(errors).toHaveLength(1)
|
|
expect(errors[0]!.message).toContain('script exhausted')
|
|
expect(reasons[0]).toMatchObject({ kind: 'error' })
|
|
// The durable failure lives entirely on turn/end.reason (with the failing
|
|
// step), not a standalone error event.
|
|
const turnEnd = agent.session.events.find(e => e.type === 'turn/end')
|
|
expect(turnEnd?.type === 'turn/end' && turnEnd.data.reason).toMatchObject({ kind: 'error', step: 1 })
|
|
})
|
|
|
|
it('disposing the loop fiber mid-turn stops the loop (HMR safety)', async () => {
|
|
const adapter = new MockAdapter(['hang'])
|
|
const ctx = await harness(adapter)
|
|
|
|
let agent!: Agent
|
|
const fiber = await ctx.plugin(Object.assign((inner: Context) => {
|
|
agent = inner.agentLoop.create(SessionId('scoped'), { provider: 'mock', model: 'mock' })
|
|
}, { inject: ['agentLoop'] }))
|
|
|
|
expect(ctx.agents.get(SessionId('scoped'))).toBe(agent)
|
|
send(agent, 'go')
|
|
await new Promise(r => setTimeout(r, 30))
|
|
expect(agent.status).toBe('running')
|
|
|
|
await fiber.dispose()
|
|
await driverDone(agent)
|
|
|
|
expect(agent.status).toBe('disposed')
|
|
expect(ctx.agents.get(SessionId('scoped'))).toBeUndefined()
|
|
expect(() => { send(agent, 'too late') }).toThrow('disposed')
|
|
})
|
|
|
|
it('creates agents from config on startup', async () => {
|
|
const adapter = new MockAdapter([textResponse('from config')])
|
|
const ctx = new Context()
|
|
await ctx.plugin(LlmService)
|
|
await ctx.plugin(SessionStore)
|
|
await ctx.plugin(SystemPrompt)
|
|
await ctx.plugin(ToolRegistry)
|
|
await ctx.plugin(AgentRegistry)
|
|
await ctx.plugin(AgentLoop, {
|
|
agents: [{ id: SessionId('config-agent'), provider: 'mock', model: 'mock' }],
|
|
})
|
|
ctx.llm.registerAdapter(['mock'], adapter)
|
|
|
|
const agent = ctx.agents.list()[0]!
|
|
expect(agent).toBeDefined()
|
|
expect(agent.id).toBe(agent.session.id)
|
|
expect(agent.id).toMatch(/^config-agent-session-/)
|
|
expect(agent.options.model).toBe('mock')
|
|
|
|
// the agent is alive: send triggers a turn
|
|
send(agent, 'hi')
|
|
await waitForIdle(ctx, agent)
|
|
expect(adapter.requests).toHaveLength(1)
|
|
})
|
|
|
|
it('attaches config agent cwd to the fresh session header', async () => {
|
|
const ctx = new Context()
|
|
await ctx.plugin(LlmService)
|
|
await ctx.plugin(SessionStore)
|
|
await ctx.plugin(SystemPrompt)
|
|
await ctx.plugin(ToolRegistry)
|
|
await ctx.plugin(AgentRegistry)
|
|
await ctx.plugin(AgentLoop, {
|
|
agents: [{ id: SessionId('config-agent'), provider: 'mock', model: 'mock', cwd: '/work/project' }],
|
|
})
|
|
|
|
const agent = ctx.agents.list()[0]!
|
|
expect(agent.session.header.cwd).toBe('/work/project')
|
|
})
|
|
|
|
it('replays a session log into an identical derived history', async () => {
|
|
const adapter = new MockAdapter([
|
|
toolCallResponse('c1', 'echo', { text: 'x' }),
|
|
textResponse('done'),
|
|
])
|
|
const ctx = await harness(adapter)
|
|
ctx.tools.register(defineTool({
|
|
name: 'echo',
|
|
description: '',
|
|
parameters: { text: { type: 'string' } },
|
|
async execute(args) {
|
|
return [{ type: 'text', text: String(args.text) }]
|
|
},
|
|
}))
|
|
const agent = ctx.agentLoop.create(SessionId('a1'), { provider: 'mock', model: 'mock' })
|
|
send(agent, 'run')
|
|
await waitForIdle(ctx, agent)
|
|
|
|
const replayed = ctx.sessions.create(SessionId('replayed'), { seed: [...agent.session.events] })
|
|
expect(replayed.deriveMessages()).toEqual(agent.session.deriveMessages())
|
|
// event-by-event identity of types
|
|
expect(replayed.events.map(e => e.type)).toEqual(
|
|
agent.session.events.map(e => e.type))
|
|
})
|
|
})
|