Merge remote-tracking branch 'origin/master' into feat/adr0016-type-build-check

This commit is contained in:
imccyu
2026-06-22 00:35:51 +08:00
365 changed files with 13601 additions and 7241 deletions

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import { afterEach, beforeEach, describe, expect, it } from 'vitest'
import { mkdtemp, rm } from 'node:fs/promises'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { PROTOCOL_VERSION } from '@agentclientprotocol/sdk'
import { AgentId } from '@deepseek-ai/dsh-agent'
import { makeBridgeHarness, textResponse, type BridgeHarness } from './harness'
/**
* End-to-end bridge specs over an in-memory transport: a real
* ClientSideConnection drives the bridge's AgentSideConnection, so every
* assertion exercises actual JSON-RPC framing and the harness event taxonomy.
*/
describe('acp bridge', () => {
let storageDir: string
let harness: BridgeHarness | undefined
beforeEach(async () => {
storageDir = await mkdtemp(join(tmpdir(), 'acp-test-'))
})
afterEach(async () => {
// e2e/integration tests own their resources (AGENTS.md): dispose even on
// failure so a flaky run never leaks a context or persistence dir.
if (harness) await harness.dispose()
harness = undefined
await rm(storageDir, { recursive: true, force: true })
})
it('initialize negotiates the protocol version and advertises capabilities', async () => {
harness = await makeBridgeHarness({ storageDir })
const res = await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
expect(res.protocolVersion).toBe(PROTOCOL_VERSION)
expect(res.agentCapabilities?.loadSession).toBe(true)
expect(res.agentCapabilities?.promptCapabilities).toMatchObject({ image: false, audio: false })
expect(res.agentInfo?.name).toBe('deepseek-harness-acp')
})
it('session/new creates a session and a full prompt turn streams text then settles end_turn', async () => {
harness = await makeBridgeHarness({ storageDir, script: [textResponse('hello there')] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const { sessionId } = await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })
expect(sessionId).toBeTruthy()
const res = await harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'hi' }] })
expect(res.stopReason).toBe('end_turn')
// The streamed text arrived as agent_message_chunk updates.
const text = harness.updates
.filter(u => u.sessionUpdate === 'agent_message_chunk')
.map(u => (u.content.type === 'text' ? u.content.text : ''))
.join('')
expect(text).toBe('hello there')
})
it('allows multiple concurrent sessions, each with a distinct id', async () => {
harness = await makeBridgeHarness({ storageDir, script: [] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const a = await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })
const b = await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })
expect(a.sessionId).toBeTruthy()
expect(b.sessionId).toBeTruthy()
expect(a.sessionId).not.toBe(b.sessionId)
// Both agents are live and independently registered.
expect(harness.ctx.agents.get(AgentId(a.sessionId))).toBeDefined()
expect(harness.ctx.agents.get(AgentId(b.sessionId))).toBeDefined()
})
it('rejects a non-absolute cwd but accepts any absolute cwd (per-session workspace)', async () => {
harness = await makeBridgeHarness({ storageDir })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
// Relative cwd is still rejected (it becomes the session header / bash workdir).
await expect(harness.client.newSession({ cwd: 'relative/path', mcpServers: [] }))
.rejects.toThrow(/absolute/)
// An absolute cwd that differs from the server launch dir is now ACCEPTED —
// the per-session cwd is honored (routed to the bash workdir), so the server
// no longer has to launch in the workspace.
const res = await harness.client.newSession({ cwd: '/tmp', mcpServers: [] })
expect(res.sessionId).toBeTruthy()
// The session header records that cwd, so its bash tools run there.
expect(harness.ctx.agents.get(AgentId(res.sessionId))!.session.header.cwd).toBe('/tmp')
})
it('rejects non-empty additionalDirectories', async () => {
harness = await makeBridgeHarness({ storageDir })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
await expect(harness.client.newSession({ cwd: process.cwd(), mcpServers: [], additionalDirectories: ['/x'] }))
.rejects.toThrow(/additionalDirectories/)
})
it('rejects an empty prompt without hanging', async () => {
harness = await makeBridgeHarness({ storageDir, script: [] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const { sessionId } = await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })
await expect(harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: ' ' }] }))
.rejects.toThrow(/empty prompt/)
})
it('rejects image content in a prompt (text-only capabilities)', async () => {
harness = await makeBridgeHarness({ storageDir, script: [] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const { sessionId } = await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })
await expect(harness.client.prompt({
sessionId,
prompt: [{ type: 'image', mimeType: 'image/png', data: 'AA==' }],
})).rejects.toThrow(/text/)
})
it('accepts a resource_link prompt by rendering the link into the text sent to the agent', async () => {
harness = await makeBridgeHarness({ storageDir, script: [textResponse('ok')] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const { sessionId } = await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })
const result = await harness.client.prompt({
sessionId,
prompt: [
{ type: 'text', text: 'fix the bug in' },
{ type: 'resource_link', uri: 'file:///x.ts', name: 'x.ts' },
],
})
expect(result.stopReason).toBe('end_turn')
const user = harness.ctx.agents.get(AgentId(sessionId))!.session.events.find(event => event.type === 'user/message')
expect(JSON.stringify(user)).toContain('resource_link')
})
it('rejects a prompt for an unknown session', async () => {
harness = await makeBridgeHarness({ storageDir })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
await expect(harness.client.prompt({ sessionId: 'nope', prompt: [{ type: 'text', text: 'hi' }] }))
.rejects.toThrow(/unknown session/)
})
it('negotiates an unsupported protocol version down to the supported one', async () => {
harness = await makeBridgeHarness({ storageDir })
const res = await harness.client.initialize({ protocolVersion: 999, clientCapabilities: {} })
expect(res.protocolVersion).toBe(PROTOCOL_VERSION)
})
it('a cancel for an unknown/absent session is a silent no-op', async () => {
harness = await makeBridgeHarness({ storageDir })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
// No session created yet — cancel must not throw.
await expect(harness.client.cancel({ sessionId: 'nope' })).resolves.toBeUndefined()
})
it('authenticate is a no-op (no auth methods advertised)', async () => {
harness = await makeBridgeHarness({ storageDir })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
await expect(harness.client.authenticate({ methodId: 'whatever' })).resolves.toBeDefined()
})
it('honors agentName/agentVersion/systemPrompt config', async () => {
harness = await makeBridgeHarness({
storageDir,
script: [textResponse('ok')],
config: { agentName: 'custom-agent', agentVersion: '9.9.9', systemPrompt: 'be terse' },
})
const res = await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
expect(res.agentInfo).toMatchObject({ name: 'custom-agent', version: '9.9.9' })
// Create + prompt so the systemPrompt config flows through agentOptions and
// reaches the model request.
const { sessionId } = await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })
await harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'hi' }] })
expect(harness.adapter.requests[0]?.system).toContain('be terse')
})
})

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import { describe, expect, it } from 'vitest'
import type { TurnEndReason } from '@deepseek-ai/dsh-session'
import type { ContentBlock as AcpContentBlock } from '@agentclientprotocol/sdk'
import {
acpPromptToText,
harnessBlockToAcpContent,
promptHasUnsupportedContent,
turnEndToStopReason,
} from '../src/codec'
describe('turnEndToStopReason', () => {
// The SDK rejects an unknown stopReason, so this must be total over every
// TurnEndReason kind and always produce a legal wire value.
it('maps every known TurnEndReason kind to a legal StopReason', () => {
expect(turnEndToStopReason({ kind: 'completed' })).toBe('end_turn')
expect(turnEndToStopReason({ kind: 'max-tokens' })).toBe('max_tokens')
expect(turnEndToStopReason({ kind: 'aborted', reason: 'x' })).toBe('cancelled')
expect(turnEndToStopReason({ kind: 'disposed' })).toBe('cancelled')
expect(turnEndToStopReason({ kind: 'error', step: 1, message: 'boom' })).toBe('end_turn')
})
it('falls back to end_turn for an unknown (merge-extensible) future kind', () => {
// A plugin-added TurnEndReason variant the bridge does not yet know about
// must still produce a legal wire value, not throw into the SDK.
const future = { kind: 'refusal' } as unknown as TurnEndReason
expect(turnEndToStopReason(future)).toBe('end_turn')
})
})
describe('harnessBlockToAcpContent', () => {
it('maps a text block to ACP text content', () => {
expect(harnessBlockToAcpContent({ type: 'text', text: 'hi' })).toEqual({ type: 'text', text: 'hi' })
})
it('returns undefined for non-text blocks (reasoning/tool/image)', () => {
expect(harnessBlockToAcpContent({ type: 'reasoning', text: 'think' })).toBeUndefined()
expect(harnessBlockToAcpContent({ type: 'image', url: 'https://x/y.png', mimeType: 'image/png' })).toBeUndefined()
})
})
describe('acpPromptToText', () => {
it('concatenates text blocks and renders resource links explicitly', () => {
const prompt: AcpContentBlock[] = [
{ type: 'text', text: 'hello ' },
{ type: 'resource_link', uri: 'file:///x', name: 'x' },
{ type: 'text', text: 'world' },
]
expect(acpPromptToText(prompt)).toBe('hello \n[resource_link name="x" uri="file:///x"]\nworld')
})
it('returns empty string for a prompt with no text blocks', () => {
expect(acpPromptToText([{ type: 'image', mimeType: 'image/png', data: 'AA==' }])).toBe('')
})
})
describe('promptHasUnsupportedContent', () => {
it('detects image, audio, and embedded resource blocks', () => {
expect(promptHasUnsupportedContent([{ type: 'image', mimeType: 'image/png', data: 'AA==' }])).toBe(true)
expect(promptHasUnsupportedContent([{ type: 'audio', mimeType: 'audio/wav', data: 'AA==' }])).toBe(true)
expect(promptHasUnsupportedContent([{ type: 'resource', resource: { uri: 'file:///x', text: 'x' } }])).toBe(true)
})
it('passes baseline text and resource_link prompt blocks', () => {
expect(promptHasUnsupportedContent([{ type: 'text', text: 'hi' }])).toBe(false)
expect(promptHasUnsupportedContent([{ type: 'resource_link', uri: 'file:///x', name: 'x' }])).toBe(false)
})
})

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import { afterEach, beforeEach, describe, expect, it } from 'vitest'
import { mkdtemp, rm } from 'node:fs/promises'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { PROTOCOL_VERSION } from '@agentclientprotocol/sdk'
import { SessionId } from '@deepseek-ai/dsh-session'
import { AgentId } from '@deepseek-ai/dsh-agent'
import { makeBridgeHarness, textResponse } from './harness'
describe('acp bridge — disposal & HMR safety', () => {
let storageDir: string
beforeEach(async () => { storageDir = await mkdtemp(join(tmpdir(), 'acp-dispose-')) })
afterEach(async () => { await rm(storageDir, { recursive: true, force: true }) })
it('disposal reaches quiescence: a running turn is aborted and awaited before dispose returns', async () => {
const harness = await makeBridgeHarness({ storageDir, script: ['hang'] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const { sessionId } = await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })
const agent = harness.ctx.agents.get(AgentId(sessionId))!
// Start a prompt that hangs in the model stream.
const promptDone = harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'go' }] })
await new Promise(r => setTimeout(r, 30))
expect(agent.status).toBe('running')
// Dispose the whole context. The bridge's teardown must abort the agent and
// AWAIT whenIdle() — so right after dispose resolves, the agent is settled
// (not still running). Proves disposal waited, not just requested.
await harness.ctx.fiber.dispose()
expect(agent.status).not.toBe('running')
// The in-flight prompt settled (cancelled) rather than hanging forever.
const res = await promptDone
expect(res.stopReason).toBe('cancelled')
})
it('after an ACP-only HMR dispose, a late session/new creates no orphan agent (closed guard)', async () => {
// Dispose JUST the bridge's fiber (an HMR reload) while agents/agent-loop
// stay up and the transport is still live. A late session/new must hit the
// `closed` guard and reject — NOT create an agent the disposed bridge can no
// longer stream or settle. Verify the world: no agent appeared.
const harness = await makeBridgeHarness({ storageDir, script: [] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const before = harness.ctx.agents.list().length
await harness.acpFiber.dispose() // tear down ONLY the bridge
await expect(harness.client.newSession({ cwd: process.cwd(), mcpServers: [] }))
.rejects.toThrow(/disposed/)
expect(harness.ctx.agents.list().length).toBe(before)
await harness.dispose()
})
it('an agent created through the bridge is unregistered when ONLY the bridge fiber is disposed', async () => {
// The factory (`ctx.agents.create`) is reached through the bridge's
// traceable service proxy, so `AgentLoop.start`'s `this.ctx.effect(...)`
// registration binds to the CALLER context — the bridge fiber — not the
// AgentLoop fiber. Disposing JUST the bridge fiber (an ACP-only HMR reload)
// must therefore reclaim the agent's registry entry, even though agents/
// agent-loop stay up. This pins the fiber-ownership the bridge's teardown
// doc comment relies on; if a refactor rebinds the registration to the
// AgentLoop fiber, the agent would survive bridge dispose and this fails.
const harness = await makeBridgeHarness({ storageDir, script: [] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const { sessionId } = await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })
expect(harness.ctx.agents.get(AgentId(sessionId))).toBeDefined()
await harness.acpFiber.dispose() // tear down ONLY the bridge
expect(harness.ctx.agents.get(AgentId(sessionId))).toBeUndefined()
await harness.dispose()
})
it('no agent is created by a session/new after the bridge has closed (closed guard)', async () => {
// After teardown (here a client disconnect sets `closed`), a late
// `session/new` must NOT create an orphan agent the bridge can no longer
// drive/settle. The transport is gone so the RPC rejects; assert the world:
// no new agent appeared in the registry.
const harness = await makeBridgeHarness({ storageDir, script: [] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const before = harness.ctx.agents.list().length
await harness.closeClientTransport() // teardown → closed = true
await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] }).catch(() => {})
await new Promise(r => setTimeout(r, 10))
expect(harness.ctx.agents.list().length).toBe(before)
await harness.dispose()
})
it('a client disconnect mid-prompt disposes the session (no registered agent left)', async () => {
// The ACP transport closes (editor quits) while a turn runs. The bridge must
// settle the in-flight prompt cancelled and DISPOSE the agent (the session's
// per-agent AgentHandle teardown) rather than leaving an orphaned running —
// or even idled-but-still-registered — agent whose updates are swallowed.
const harness = await makeBridgeHarness({ storageDir, script: ['hang'] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const { sessionId } = await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })
const agent = harness.ctx.agents.get(AgentId(sessionId))!
// Start a prompt that hangs in the model stream. The prompt RPC will never
// return (its transport is severed), so do not await it.
void harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'go' }] }).catch(() => {})
await new Promise(r => setTimeout(r, 30))
expect(agent.status).toBe('running')
// Sever the transport — the bridge's conn.closed teardown runs and drives the
// agent's AgentHandle dispose to quiescence on its OWN (before any dispose()).
await harness.closeClientTransport()
await agent.whenIdle()
// The agent's loop has stopped: status `disposed`.
expect(agent.status).toBe('disposed')
// Await the bridge teardown to completion WITHOUT tearing down the root
// agents/sessions services (so we can still query them). acpFiber.dispose()
// invokes the SAME memoized quiesce() the disconnect started and awaits its
// promise — which resolves only after every rec.dispose() (loop exit +
// session removal) has finished, closing the whenIdle()/owned.dispose()
// microtask race. The AgentHandle dispose has run: the agent is unregistered
// and its session removed from the store, not merely idled (the old
// behavior). The services live on the root ctx, so they survive this.
await harness.acpFiber.dispose()
expect(harness.ctx.agents.get(AgentId(sessionId))).toBeUndefined()
expect(harness.ctx.sessions.get(SessionId(sessionId))).toBeUndefined()
await harness.dispose()
})
it('a client disconnect racing fiber dispose both reach quiescence (shared teardown)', async () => {
// conn.closed teardown and ctx.fiber.dispose() can fire near-simultaneously.
// They must share one teardown promise: dispose() must NOT return before the
// disconnect teardown's whenIdle() has settled (a `record === undefined`-only
// guard would let the second caller return early mid-teardown).
const harness = await makeBridgeHarness({ storageDir, script: ['hang'] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const { sessionId } = await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })
const agent = harness.ctx.agents.get(AgentId(sessionId))!
void harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'go' }] }).catch(() => {})
await new Promise(r => setTimeout(r, 30))
expect(agent.status).toBe('running')
// Fire both teardown paths without awaiting the first, then await both.
const close = harness.closeClientTransport()
const dispose = harness.ctx.fiber.dispose()
await Promise.all([close, dispose])
// After BOTH settle, the agent has fully drained (not still running).
expect(agent.status).not.toBe('running')
})
it('after dispose, session/update listeners are gone (no further updates emitted)', async () => {
const harness = await makeBridgeHarness({ storageDir, script: [] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const { sessionId } = await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })
const session = harness.ctx.agents.get(AgentId(sessionId))!.session
await harness.ctx.fiber.dispose()
const before = harness.updates.length
// Append an event directly to the (now-detached) session: the bridge's
// session/event listener should have been disposed, so no update fires.
session.append('turn/start', { turn: 99, trigger: { kind: 'message', source: { kind: 'user' } } })
await new Promise(r => setTimeout(r, 10))
expect(harness.updates.length).toBe(before)
})
it('the final turn closing events are persisted across an AgentHandle dispose (durability)', async () => {
// The teardown-ORDER guarantee: a per-agent dispose must stop the loop,
// AWAIT its exit (so the loop's final `turn/end` + `session/flush` fire
// through the still-attached `session.onAppend` → `session/event`), and only
// THEN detach onAppend + remove the session. If the order were inverted
// (detach first), the closing events would never reach persistence. Drive a
// CLEAN turn to completion, dispose JUST the bridge, then re-load the
// persisted log from disk and assert the closing turn/end is on disk — the
// world, not the agent's self-report.
const harness = await makeBridgeHarness({ storageDir, script: [textResponse('done')] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const { sessionId } = await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })
await harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'go' }] })
const liveEvents = harness.ctx.agents.get(AgentId(sessionId))!.session.events.length
expect(liveEvents).toBeGreaterThan(0)
// Tear down JUST the bridge (the AgentHandle dispose runs to quiescence).
await harness.acpFiber.dispose()
expect(harness.ctx.agents.get(AgentId(sessionId))).toBeUndefined()
// Re-load the session from disk: every live event (incl. the closing
// turn/end) was flushed before the session was detached.
const reloaded = await harness.ctx.sessionPersistence.load(SessionId(sessionId))
expect(reloaded.events.length).toBe(liveEvents)
const last = reloaded.events.at(-1)!
expect(last.type).toBe('turn/end')
await harness.dispose()
})
it('a turn aborted BY the dispose still flushes its closing turn/end to disk (durability, mid-turn)', async () => {
// The teardown-order contract only earns its keep when the closing events are
// produced BY the dispose itself. Here the model stream HANGS, so the turn is
// still open when teardown runs: the composite agent effect stops the loop,
// the loop unwinds and appends `turn/end {disposed}` + runs its final
// `session/flush` — all while `onAppend` is still attached (the session
// detach is the LAST disposer in the same effect's LIFO chain) — and only
// THEN is the session detached. If the order were inverted (or the session
// were a racing SIBLING effect), the abort-produced `turn/end` would never
// reach disk and a re-load would instead show crash-recovery's synthetic
// `interrupted` closer. Re-load from disk and assert the REAL `disposed`
// reason landed — proving the loop's own closing event was captured, not a
// recovered substitute.
const harness = await makeBridgeHarness({ storageDir, script: ['hang'] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const { sessionId } = await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })
const agent = harness.ctx.agents.get(AgentId(sessionId))!
void harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'go' }] }).catch(() => {})
await new Promise(r => setTimeout(r, 30))
expect(agent.status).toBe('running')
// The turn is OPEN in the log (turn/start appended, no turn/end yet).
const openTurnEnds = agent.session.events.filter(e => e.type === 'turn/end').length
// Dispose JUST the bridge: a fiber unload that must STILL honor the ordered
// teardown (the composite effect runs its disposer chain as a unit).
await harness.acpFiber.dispose()
expect(harness.ctx.agents.get(AgentId(sessionId))).toBeUndefined()
// The loop's own `turn/end {disposed}` is on disk (re-load: the world, not
// self-report) — NOT a crash-recovery `interrupted` substitute.
const reloaded = await harness.ctx.sessionPersistence.load(SessionId(sessionId))
const persistedTurnEnds = reloaded.events.filter(e => e.type === 'turn/end')
expect(persistedTurnEnds.length).toBe(openTurnEnds + 1)
expect(persistedTurnEnds.at(-1)!.data.reason).toMatchObject({ kind: 'disposed' })
await harness.dispose()
})
it('per-session AgentHandle dispose leaves sibling agents untouched', async () => {
// The factory returns a per-agent AgentHandle whose dispose() tears down
// EXACTLY that agent + its session — RFC 011 isolation. Create two agents
// directly through the registry factory (the same path the ACP bridge uses),
// dispose one handle, and assert the other survives, registered and
// queryable, with its session still in the store.
const harness = await makeBridgeHarness({ storageDir, script: [] })
const handleA = harness.ctx.agents.create({
agentId: AgentId('sib-a'), sessionId: SessionId('sib-a'), agentOptions: { model: 'mock' },
})
const handleB = harness.ctx.agents.create({
agentId: AgentId('sib-b'), sessionId: SessionId('sib-b'), agentOptions: { model: 'mock' },
})
expect(harness.ctx.agents.get(AgentId('sib-a'))).toBe(handleA.agent)
expect(harness.ctx.agents.get(AgentId('sib-b'))).toBe(handleB.agent)
await handleA.dispose()
// A is gone — unregistered AND its session removed from the store.
expect(harness.ctx.agents.get(AgentId('sib-a'))).toBeUndefined()
expect(harness.ctx.sessions.get(SessionId('sib-a'))).toBeUndefined()
expect(handleA.agent.status).toBe('disposed')
// B is wholly unaffected.
expect(harness.ctx.agents.get(AgentId('sib-b'))).toBe(handleB.agent)
expect(harness.ctx.sessions.get(SessionId('sib-b'))).toBeDefined()
expect(handleB.agent.status).not.toBe('disposed')
await harness.dispose()
})
it('a throwing agent/disposed listener does not prevent session removal (composite-effect containment)', async () => {
// The AgentHandle teardown folds session-detach, register, and loop-stop
// into ONE composite effect whose disposers run as a `.then()` chain. The
// register disposer emits `agent/disposed`; if a listener throws and the
// emit is UNCONTAINED, the rejected chain skips the LATER session-detach
// disposer — stranding the session in the store with `onAppend` attached (a
// leak AND a durability hole, since the new design relies on detach
// running). The emit must be contained. Register a throwing listener, drive
// a clean turn, dispose, and assert the session was STILL removed.
const harness = await makeBridgeHarness({ storageDir, script: [textResponse('ok')] })
harness.ctx.on('agent/disposed', () => { throw new Error('boom disposed listener') })
const handle = harness.ctx.agents.create({
agentId: AgentId('guard-a'), sessionId: SessionId('guard-a'), agentOptions: { model: 'mock' },
})
handle.agent.send([{ type: 'text', text: 'go' }])
await handle.agent.whenIdle()
expect(harness.ctx.sessions.get(SessionId('guard-a'))).toBeDefined()
// Dispose: the throwing listener must NOT break the chain before detach.
await handle.dispose()
expect(harness.ctx.agents.get(AgentId('guard-a'))).toBeUndefined()
expect(harness.ctx.sessions.get(SessionId('guard-a'))).toBeUndefined() // detach still ran
await harness.dispose()
})
it('concurrent AgentHandle dispose() calls all await the SAME teardown (memoized)', async () => {
// The handle's dispose() must memoize: the underlying cordis effect disposer
// is single-shot, so a second dispose() while the first is mid-teardown would
// otherwise resolve IMMEDIATELY (effect epoch already cleared) — before the
// first call's await agent.done + final flush finished. Every caller must
// observe the same quiescence boundary.
const harness = await makeBridgeHarness({ storageDir, script: ['hang'] })
const handle = harness.ctx.agents.create({
agentId: AgentId('conc-a'), sessionId: SessionId('conc-a'), agentOptions: { model: 'mock' },
})
// Drive a turn that hangs in the model stream, so the loop is mid-turn when
// disposed — its exit runs a final session/flush we can gate to hold the
// teardown observably in-flight.
handle.agent.send([{ type: 'text', text: 'go' }])
await new Promise(r => setTimeout(r, 30))
expect(handle.agent.status).toBe('running')
let releaseFlush!: () => void
const flushGate = new Promise<void>((resolve) => { releaseFlush = resolve })
harness.ctx.on('session/flush', () => flushGate)
// First dispose enters teardown (aborts the hanging step) and blocks in the
// gated final flush.
const first = handle.dispose()
let firstSettled = false
void first.then(() => { firstSettled = true })
await new Promise(r => setTimeout(r, 20))
expect(firstSettled).toBe(false)
// Second dispose MUST await the same in-flight teardown, not resolve early.
const second = handle.dispose()
let secondSettled = false
void second.then(() => { secondSettled = true })
await new Promise(r => setTimeout(r, 20))
expect(secondSettled).toBe(false) // memoized: still pending with the first
// Release the flush; both resolve together and the session is gone.
releaseFlush()
await Promise.all([first, second])
expect(harness.ctx.agents.get(AgentId('conc-a'))).toBeUndefined()
expect(harness.ctx.sessions.get(SessionId('conc-a'))).toBeUndefined()
await harness.dispose()
})
})

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import { afterEach, beforeEach, describe, expect, it } from 'vitest'
import { mkdtemp, rm } from 'node:fs/promises'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { PROTOCOL_VERSION } from '@agentclientprotocol/sdk'
import { AgentId } from '@deepseek-ai/dsh-agent'
import { SessionId } from '@deepseek-ai/dsh-session'
import { makeBridgeHarness, textResponse, type BridgeHarness } from './harness'
describe('acp bridge — demux & config edges', () => {
let storageDir: string
let harness: BridgeHarness | undefined
beforeEach(async () => { storageDir = await mkdtemp(join(tmpdir(), 'acp-edge-')) })
afterEach(async () => {
if (harness) await harness.dispose()
harness = undefined
await rm(storageDir, { recursive: true, force: true })
})
it('ignores events from an agent the bridge does not own (strict id demux)', async () => {
// A second agent created directly on the registry (NOT via the bridge) runs
// a turn. Its session/event + agent/status must NOT produce ACP updates and
// must not settle anything — the bridge demuxes strictly by its own id.
harness = await makeBridgeHarness({ storageDir, script: [textResponse('foreign')] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })
const before = harness.updates.length
const { agent: foreign } = harness.ctx.agents.create({ agentId: AgentId('foreign'), sessionId: SessionId('foreign-session'), agentOptions: { model: 'mock' } })
foreign.send([{ type: 'text', text: 'hi' }])
await foreign.whenIdle()
await new Promise(r => setTimeout(r, 10))
// No update was emitted for the foreign agent's stream.
expect(harness.updates.length).toBe(before)
})
it('survives a session/update that the client rejects (best-effort notify)', async () => {
harness = await makeBridgeHarness({ storageDir, script: [textResponse('ok')] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const { sessionId } = await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })
// Make the client reject every update — the bridge's notify() must swallow
// the rejection and the prompt must still settle normally.
harness.onSessionUpdateError = () => { throw new Error('client update rejected') }
const res = await harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'go' }] })
expect(res.stopReason).toBe('end_turn')
})
it('accepts session/new with additionalDirectories empty', async () => {
// Exercises the defined-but-empty additionalDirectories branch (length 0 → allowed).
harness = await makeBridgeHarness({ storageDir })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const a = await harness.client.newSession({ cwd: process.cwd(), mcpServers: [], additionalDirectories: [] })
expect(a.sessionId).toBeTruthy()
})
it('rejects non-empty mcpServers until MCP wiring is implemented', async () => {
harness = await makeBridgeHarness({ storageDir })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
await expect(harness.client.newSession({
cwd: process.cwd(),
mcpServers: [{ name: 'fs', command: 'npx', args: ['server'], env: [] }],
})).rejects.toThrow(/mcpServers/)
})
})

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/**
* Shared test fixtures for the ACP bridge specs. A plain module (NOT a
* *.spec.ts) so importing it does not re-register a describe block.
*
* `makeBridgeHarness` builds a full in-memory cordis context (llm + session +
* system-prompt + tools + agents + agent-loop + persistence) with the ACP
* bridge wired to an in-memory transport, plus a `ClientSideConnection` on the
* other end — so a test drives the bridge exactly as an editor would, with no
* subprocess and no real stdio.
*/
import { Context } from 'cordis'
import LlmService, { CallId, type GenerateOptions, type StreamChunk } from '@deepseek-ai/dsh-llm'
import { LlmAdapter } from '@deepseek-ai/dsh-llm'
import SessionStore from '@deepseek-ai/dsh-session'
import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
import ToolRegistry from '@deepseek-ai/dsh-tools'
import AgentRegistry from '@deepseek-ai/dsh-agent'
import AgentLoop from '@deepseek-ai/dsh-agent-loop'
import SessionPersistenceJsonl from '@deepseek-ai/dsh-session-persistence-jsonl'
import { LocalBashExecutor } from '@deepseek-ai/dsh-bash-local'
import * as ToolBash from '@deepseek-ai/dsh-tool-bash'
import {
ClientSideConnection,
ndJsonStream,
type Agent as AcpAgent,
type Client,
type RequestPermissionRequest,
type RequestPermissionResponse,
type SessionNotification,
type Stream,
} from '@agentclientprotocol/sdk'
import * as AcpPlugin from '../src/index'
import { type AcpConfig } from '../src/index'
/** A scripted mock adapter (mirrors the agent-loop test adapter). */
class MockAdapter extends LlmAdapter {
requests: GenerateOptions[] = []
constructor(private script: (StreamChunk[] | 'hang')[]) {
super()
}
async * stream(options: GenerateOptions): AsyncIterable<StreamChunk> {
this.requests.push(options)
const entry = this.script.shift()
if (!entry) throw new Error('MockAdapter: script exhausted')
if (entry === 'hang') {
yield { type: 'block-start', index: 0, blockType: 'text' }
yield { type: 'text-delta', index: 0, text: 'partial' }
await new Promise<void>((_resolve, reject) => {
if (options.signal?.aborted) { reject(new Error('aborted')); return }
options.signal?.addEventListener('abort', () => { reject(new Error('aborted')) }, { once: true })
})
return
}
for (const chunk of entry) {
if (options.signal?.aborted) throw new Error('aborted')
yield chunk
}
}
}
/** Scripted text response ending in a clean `stop` finish. */
export function textResponse(text: string): StreamChunk[] {
return [
{ type: 'block-start', index: 0, blockType: 'text' },
...Array.from(text, (char): StreamChunk => ({ type: 'text-delta', index: 0, text: char })),
{ type: 'block-end', index: 0, block: { type: 'text', text } },
{ type: 'usage', usage: { inputTokens: 5, outputTokens: text.length } },
{ type: 'finish', reason: { kind: 'stop' } },
]
}
/** Scripted response ending at the output-token ceiling (max-tokens finish). */
export function maxTokensResponse(text: string): StreamChunk[] {
return [
{ type: 'block-start', index: 0, blockType: 'text' },
...Array.from(text, (char): StreamChunk => ({ type: 'text-delta', index: 0, text: char })),
{ type: 'block-end', index: 0, block: { type: 'text', text } },
{ type: 'finish', reason: { kind: 'max-tokens' } },
]
}
/** Scripted response that fails mid-turn with a finish-error chunk. */
export function errorResponse(message: string): StreamChunk[] {
return [
{ type: 'block-start', index: 0, blockType: 'text' },
{ type: 'text-delta', index: 0, text: 'partial' },
{ type: 'finish', reason: { kind: 'error', message, code: 'PROVIDER_ERROR' } },
]
}
/** Scripted single tool call (no follow-up step scripted by default). */
export function toolCallResponse(rawCallId: string, name: string, args: object): StreamChunk[] {
const argumentsJson = JSON.stringify(args)
const id = CallId(rawCallId)
return [
{ type: 'block-start', index: 0, blockType: 'tool-call' },
{ type: 'tool-call-delta', index: 0, id, name, argumentsDelta: argumentsJson },
{ type: 'block-end', index: 0, block: { type: 'tool-call', id, name, arguments: argumentsJson } },
{ type: 'finish', reason: { kind: 'tool-calls' } },
]
}
/** A captured `session/update` notification (the update payload only). */
export type CapturedUpdate = SessionNotification['update']
export interface BridgeHarness {
ctx: Context
client: ClientSideConnection
adapter: MockAdapter
/** Every `session/update` the bridge pushed, in order (payload only). */
updates: CapturedUpdate[]
/** Same, but tagged with each update's `sessionId` (for multi-session demux assertions). */
sessionUpdates: { sessionId: string; update: CapturedUpdate }[]
/** Permission requests the bridge issued (none until the gate lands). */
permissionRequests: RequestPermissionRequest[]
/** Decide each permission request's outcome (default: cancelled). */
onPermission: (req: RequestPermissionRequest) => RequestPermissionResponse
/** If set, the client's sessionUpdate throws this (tests notify error path). */
onSessionUpdateError: (() => void) | undefined
/**
* Sever the client→agent transport (close the writable the agent reads),
* which ends the agent-side stream and resolves the bridge's `conn.closed` —
* simulating an editor disconnecting. Returns once the close is requested.
*/
closeClientTransport: () => Promise<void>
/**
* The child fiber the ACP bridge is mounted in. Disposing it tears down JUST
* the bridge (its `ctx.on` listeners + effect) while the rest of the harness
* stays up — an ACP-only HMR reload.
*/
acpFiber: Awaited<ReturnType<Context['plugin']>>
dispose: () => Promise<void>
storageDir: string
}
/**
* Build the bridge + a connected client over an in-memory transport pair.
*
* Two identity `TransformStream`s cross-wired (agent writes → client reads,
* client writes → agent reads) give a faithful bidirectional JSON-RPC channel.
* The bridge's `apply` receives the agent-side `Stream` via `config.stream`;
* the test holds the `ClientSideConnection`.
*
* Pass `config: { model: undefined }` to override the default `model: 'mock'`
* (the model key is dropped entirely when explicitly undefined).
*/
export async function makeBridgeHarness(options: {
script?: (StreamChunk[] | 'hang')[]
config?: Partial<AcpConfig>
storageDir: string
/**
* Plug the REAL `dsh-bash-local` executor + `dsh-tool-bash` tools (instead of
* a test's own inline tool). Lets a test drive the actual `bash` tool — its
* real `presentCall`/`presentResult` — through the bridge, so tool-call UI
* tests verify the SHIPPING tool, not a stand-in (AGENTS.md "prefer the real
* implementation over a mock in tests").
*/
withBash?: boolean
} = { storageDir: '' }): Promise<BridgeHarness> {
const adapter = new MockAdapter(options.script ?? [])
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: [] })
await ctx.plugin(SessionPersistenceJsonl, { root: options.storageDir })
if (options.withBash) {
await ctx.plugin(LocalBashExecutor, { timeoutMs: 10_000 })
await ctx.plugin(ToolBash)
}
ctx.llm.registerAdapter(['mock'], adapter)
// Two identity byte pipes cross-wired into the two ndJsonStreams: bytes the
// agent writes flow to the client's reader and vice versa. (ndJsonStream
// takes (output, input): the agent writes to a2c and reads from c2a; the
// client writes to c2a and reads from a2c.) The client→agent path (c2a) runs
// through a hand-held writer so a test can close it (`closeClientTransport`)
// to simulate the editor disconnecting — closing it EOFs the agent's reader
// and resolves the bridge's `conn.closed`.
const a2c = new TransformStream<Uint8Array, Uint8Array>()
const c2a = new TransformStream<Uint8Array, Uint8Array>()
const c2aWriter = c2a.writable.getWriter()
// A WritableStream the client writes into; each chunk is forwarded to the
// held c2a writer. `closeClientTransport` closes that writer directly.
const clientOutput = new WritableStream<Uint8Array>({
write: chunk => c2aWriter.write(chunk),
})
const agentStream: Stream = ndJsonStream(a2c.writable, c2a.readable)
const clientStream: Stream = ndJsonStream(clientOutput, a2c.readable)
const updates: CapturedUpdate[] = []
const sessionUpdates: { sessionId: string; update: CapturedUpdate }[] = []
const permissionRequests: RequestPermissionRequest[] = []
const harness: BridgeHarness = {
ctx,
adapter,
updates,
sessionUpdates,
permissionRequests,
onPermission: () => ({ outcome: { outcome: 'cancelled' } }),
onSessionUpdateError: undefined,
client: undefined as unknown as ClientSideConnection,
acpFiber: undefined as unknown as BridgeHarness['acpFiber'],
// Close the writable the CLIENT writes to (c2a) — its readable, which the
// agent's ndJsonStream consumes, then EOFs cleanly, so the bridge's
// `conn.closed` resolves and it sees the client disconnect. If the client
// connection holds a writer lock on it, abort the connection's signal path
// instead by closing through the underlying stream.
closeClientTransport: async () => { await c2aWriter.close() },
dispose: async () => { await ctx.fiber.dispose() },
storageDir: options.storageDir,
}
const makeClient = (_agent: AcpAgent): Client => ({
sessionUpdate(params: SessionNotification): Promise<void> {
updates.push(params.update)
sessionUpdates.push({ sessionId: params.sessionId, update: params.update })
// Let a test force the bridge's notify() error path.
if (harness.onSessionUpdateError) return Promise.reject(new Error('client update rejected'))
return Promise.resolve()
},
requestPermission(params: RequestPermissionRequest): Promise<RequestPermissionResponse> {
permissionRequests.push(params)
return Promise.resolve(harness.onPermission(params))
},
})
// Wire the bridge (agent side) and the client (test side). The test config
// can override `model` (including to undefined): default to 'mock' unless the
// caller explicitly set the key (even to undefined), so a `{ model: undefined }`
// override means "no model at all".
const cfg: AcpConfig = { stream: agentStream, ...options.config }
if (!(options.config && 'model' in options.config)) cfg.model = 'mock'
// Mount the bridge the way production does: as a cordis PLUGIN (via
// `ctx.plugin` with the real `inject`), NOT `AcpPlugin.apply(ctx, cfg)`
// directly on the root ctx. The plugin fiber is the faithful reproduction —
// the bridge's `apply` runs inside the fiber's injection scope, and its ACP
// handlers later run from the JSON-RPC read loop OUTSIDE that scope, exactly
// as under the example's cordis.yml. (Mounting directly on root made every
// service an ungated property and hid the "cannot get property … without
// inject" failure that bit a real Zed session.) `harness.acpFiber.dispose()`
// tears down JUST the bridge (its listeners + effect) for the HMR test.
harness.acpFiber = await ctx.plugin({
name: 'acp-test',
// Use the bridge's REAL exported `inject` so this never drifts from the
// plugin's actual dependency list (adding a service to the bridge must not
// require editing the harness — a hardcoded list silently broke when `tools`
// was added). The bridge programs against the interface packages only.
inject: [...AcpPlugin.inject],
apply: (inner: Context) => { AcpPlugin.apply(inner, cfg) },
})
harness.client = new ClientSideConnection(makeClient, clientStream)
return harness
}

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import { afterEach, beforeEach, describe, expect, it } from 'vitest'
import { mkdtemp, rm } from 'node:fs/promises'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { PROTOCOL_VERSION } from '@agentclientprotocol/sdk'
import { SESSION_FORMAT_VERSION, SessionId } from '@deepseek-ai/dsh-session'
import { AgentId } from '@deepseek-ai/dsh-agent'
import { makeBridgeHarness, textResponse, toolCallResponse, type BridgeHarness, type CapturedUpdate } from './harness'
/** Concatenate the text of all agent_message_chunk updates. */
function messageText(updates: CapturedUpdate[]): string {
return updates
.filter(u => u.sessionUpdate === 'agent_message_chunk')
.map(u => (u.content.type === 'text' ? u.content.text : ''))
.join('')
}
describe('acp bridge — session/load replay', () => {
let storageDir: string
let live: BridgeHarness | undefined
let loader: BridgeHarness | undefined
beforeEach(async () => { storageDir = await mkdtemp(join(tmpdir(), 'acp-load-')) })
afterEach(async () => {
if (live) await live.dispose()
if (loader) await loader.dispose()
live = loader = undefined
await rm(storageDir, { recursive: true, force: true })
})
it('replays a persisted turn from the event log as session/update on load', async () => {
// 1. Create a session and run one turn — persistence writes the event log.
live = await makeBridgeHarness({ storageDir, script: [textResponse('remembered answer')] })
await live.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const { sessionId } = await live.client.newSession({ cwd: process.cwd(), mcpServers: [] })
await live.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'remember this' }] })
// Dispose to flush + release; the on-disk log persists.
await live.dispose()
live = undefined
// 2. A fresh bridge loads the same session id and must replay the turn.
loader = await makeBridgeHarness({ storageDir, script: [] })
await loader.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const res = await loader.client.loadSession({ sessionId, cwd: process.cwd(), mcpServers: [] })
expect(res).toBeDefined()
// The replayed updates reconstruct the assistant text from the event log
// (assistant/chunk → agent_message_chunk), NOT from deriveMessages.
expect(messageText(loader.updates)).toBe('remembered answer')
// And the USER side of the turn replays too (user/message →
// user_message_chunk), so the editor transcript shows both sides.
const userText = loader.updates
.filter(u => u.sessionUpdate === 'user_message_chunk')
.map(u => (u.content.type === 'text' ? u.content.text : ''))
.join('')
expect(userText).toBe('remember this')
})
it('replays a persisted tool call with the TOOL-OWNED presentation (title/rawInput/console output)', async () => {
// A turn with a REAL bash tool call is persisted, then loaded by a fresh
// bridge. The replayed tool_call/tool_call_update must carry the tool's OWN
// presentation — identical to how it streamed live — via a throwaway
// presenter that pairs call→result as the log replays in order. Uses the
// shipping tool (withBash), not a stand-in (AGENTS.md "prefer the real
// implementation over a mock in tests").
live = await makeBridgeHarness({
storageDir,
withBash: true,
script: [toolCallResponse('c1', 'bash', { command: 'echo hello', description: 'Print a greeting' }), textResponse('done')],
})
await live.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const { sessionId } = await live.client.newSession({ cwd: process.cwd(), mcpServers: [] })
await live.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'greet' }] })
await live.dispose()
live = undefined
// A fresh bridge — also with the real bash tool, since the presentation is
// resolved from the live registry at replay time — loads the session.
loader = await makeBridgeHarness({ storageDir, withBash: true, script: [] })
await loader.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
await loader.client.loadSession({ sessionId, cwd: process.cwd(), mcpServers: [] })
const call = loader.updates.find(u => u.sessionUpdate === 'tool_call')
expect(call).toMatchObject({ toolCallId: 'c1', title: 'echo hello', kind: 'execute', rawInput: 'echo hello' })
if (call?.sessionUpdate !== 'tool_call') throw new Error('expected a tool_call')
// Capability OFF on this loader: the description renders as a content block, no terminal block.
expect(call.content).toEqual([{ type: 'content', content: { type: 'text', text: 'Print a greeting' } }])
const update = loader.updates.find(u => u.sessionUpdate === 'tool_call_update')
expect(update?.sessionUpdate).toBe('tool_call_update')
if (update?.sessionUpdate !== 'tool_call_update') throw new Error('expected a tool_call_update')
expect(update).toMatchObject({ toolCallId: 'c1', status: 'completed' })
const content = update.content as { content: { text: string } }[]
expect(content[0]?.content.text).toBe('```console\nhello\n```')
})
it('replays a persisted bash call as a TERMINAL card when the loader advertises the capability', async () => {
// The presentation is resolved at replay time, so a loader that advertised
// _meta.terminal_output must reconstruct the terminal card (content + _meta)
// from the persisted log — identical to how it would have streamed live.
live = await makeBridgeHarness({
storageDir,
withBash: true,
script: [toolCallResponse('c1', 'bash', { command: 'echo hi', description: 'Greet' }), textResponse('done')],
})
await live.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const { sessionId } = await live.client.newSession({ cwd: process.cwd(), mcpServers: [] })
await live.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'greet' }] })
await live.dispose()
live = undefined
loader = await makeBridgeHarness({ storageDir, withBash: true, script: [] })
await loader.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: { _meta: { terminal_output: true } } })
await loader.client.loadSession({ sessionId, cwd: process.cwd(), mcpServers: [] })
const call = loader.updates.find(u => u.sessionUpdate === 'tool_call')
if (call?.sessionUpdate !== 'tool_call') throw new Error('expected a tool_call')
// Replay reconstructs the terminal card: description block, then terminal block.
expect(call.content).toEqual([
{ type: 'content', content: { type: 'text', text: 'Greet' } },
{ type: 'terminal', terminalId: 'c1' },
])
expect((call._meta as { terminal_info?: unknown }).terminal_info).toEqual({ terminal_id: 'c1', cwd: process.cwd() })
const update = loader.updates.find(u => u.sessionUpdate === 'tool_call_update')
if (update?.sessionUpdate !== 'tool_call_update') throw new Error('expected a tool_call_update')
// Terminal mode: content omitted, output + exit on _meta — matching live.
expect(update.content).toBeUndefined()
const meta = update._meta as { terminal_output?: { data: string }; terminal_exit?: { exit_code?: number } }
expect(meta.terminal_output?.data).toBe('hi\n')
expect(meta.terminal_exit?.exit_code).toBe(0)
})
it('a load whose resume finishes after a client disconnect leaks no live session', async () => {
// A session/load is mid-resume() when the client transport closes. The load
// must NOT end up with a live registered agent for the connection that is
// already gone. (The bridge's post-await `closed` guard backs this on real
// stdio; here the SDK rejects the in-flight request on close — either way no
// agent survives.) Stall persistence so resume() is pending across the close.
live = await makeBridgeHarness({ storageDir, script: [textResponse('x')] })
await live.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const { sessionId } = await live.client.newSession({ cwd: process.cwd(), mcpServers: [] })
await live.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'hi' }] })
await live.dispose()
live = undefined
loader = await makeBridgeHarness({ storageDir, script: [] })
await loader.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const realLoad = loader.ctx.sessionPersistence.load.bind(loader.ctx.sessionPersistence)
let release!: () => void
const gate = new Promise<void>((r) => { release = r })
loader.ctx.sessionPersistence.load = async (id) => { await gate; return realLoad(id) }
const loadResult = loader.client.loadSession({ sessionId, cwd: process.cwd(), mcpServers: [] })
.then(() => 'resolved' as const, () => 'rejected' as const)
await loader.closeClientTransport() // teardown sets `closed` while load is gated
release() // resume() finishes AFTER teardown
expect(await loadResult).toBe('rejected')
// No live agent was installed for the closed connection.
expect(loader.ctx.agents.get(AgentId(sessionId))).toBeUndefined()
})
it('rejects load when the requested cwd does not match the persisted session cwd', async () => {
// Seed a session on disk whose header.cwd is a DIFFERENT absolute path than
// the server's launch dir. The bridge must LOAD it (per-session cwd is
// honored — the resumed session keeps header.cwd, and bash routes there), no
// longer reject on a mismatch.
loader = await makeBridgeHarness({ storageDir, script: [] })
const otherCwd = '/some/other/workspace'
await loader.ctx.sessionPersistence.create({
version: SESSION_FORMAT_VERSION, id: SessionId('elsewhere'), createdAt: 1, cwd: otherCwd,
})
await loader.ctx.sessionPersistence.append(SessionId('elsewhere'), [
{ type: 'turn/start', seq: 0, time: 0, data: { turn: 1, trigger: { kind: 'message', source: { kind: 'user' } } } },
{ type: 'turn/end', seq: 1, time: 0, data: { turn: 1, reason: { kind: 'completed' } } },
])
await loader.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
await expect(loader.client.loadSession({ sessionId: 'elsewhere', cwd: process.cwd(), mcpServers: [] }))
.rejects.toThrow(/cwd mismatch/)
expect(loader.ctx.agents.get(AgentId('elsewhere'))).toBeUndefined()
const res = await loader.client.loadSession({ sessionId: 'elsewhere', cwd: `${otherCwd}/.`, mcpServers: [] })
expect(res).toBeDefined()
expect(loader.ctx.agents.get(AgentId('elsewhere'))!.session.header.cwd).toBe(otherCwd)
})
it('rejects load for a non-absolute cwd (still required to be absolute)', async () => {
loader = await makeBridgeHarness({ storageDir, script: [] })
await loader.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
await expect(loader.client.loadSession({ sessionId: 's', cwd: 'rel', mcpServers: [] }))
.rejects.toThrow(/absolute/)
})
it('lets persistence reject a load for an unknown id after metadata lookup misses', async () => {
loader = await makeBridgeHarness({ storageDir, script: [] })
await loader.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
await expect(loader.client.loadSession({ sessionId: 'missing', cwd: process.cwd(), mcpServers: [] }))
.rejects.toThrow(/Internal error/)
})
it('rejects loading a persisted session that has NO cwd (would silently run in the launch dir)', async () => {
// A legacy / externally-created session log with no header.cwd. The bridge
// must reject the load rather than accept it and let bash silently fall back
// to the server's launch dir (the request cwd does not override the header).
loader = await makeBridgeHarness({ storageDir, script: [] })
await loader.ctx.sessionPersistence.create({
version: SESSION_FORMAT_VERSION, id: SessionId('legacy'), createdAt: 1, // no cwd
})
await loader.ctx.sessionPersistence.append(SessionId('legacy'), [
{ type: 'turn/start', seq: 0, time: 0, data: { turn: 1, trigger: { kind: 'message', source: { kind: 'user' } } } },
{ type: 'turn/end', seq: 1, time: 0, data: { turn: 1, reason: { kind: 'completed' } } },
])
await loader.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
await expect(loader.client.loadSession({ sessionId: 'legacy', cwd: process.cwd(), mcpServers: [] }))
.rejects.toThrow(/no absolute persisted cwd/)
// Rejected BEFORE resume (metadata-only check) — no agent was registered, so
// the id is not wedged: a later attempt hits the same clean rejection, not a
// duplicate-registration error.
expect(loader.ctx.agents.get(AgentId('legacy'))).toBeUndefined()
await expect(loader.client.loadSession({ sessionId: 'legacy', cwd: process.cwd(), mcpServers: [] }))
.rejects.toThrow(/no absolute persisted cwd/)
})
it('allows loading alongside an existing session but rejects re-loading the SAME id', async () => {
// Multi-session: a load can coexist with a live session, but loading an id
// that is already live is rejected (it is already loaded).
live = await makeBridgeHarness({ storageDir, script: [textResponse('one')] })
await live.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const { sessionId } = await live.client.newSession({ cwd: process.cwd(), mcpServers: [] })
await live.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'hi' }] })
// A different new session coexists.
const other = await live.client.newSession({ cwd: process.cwd(), mcpServers: [] })
expect(other.sessionId).not.toBe(sessionId)
// Re-loading the already-live id is rejected.
await expect(live.client.loadSession({ sessionId, cwd: process.cwd(), mcpServers: [] }))
.rejects.toThrow(/already loaded/)
})
})

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import { afterEach, beforeEach, describe, expect, it } from 'vitest'
import { mkdtemp, rm } from 'node:fs/promises'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { PROTOCOL_VERSION } from '@agentclientprotocol/sdk'
import { AgentId } from '@deepseek-ai/dsh-agent'
import { makeBridgeHarness, textResponse, type BridgeHarness, type CapturedUpdate } from './harness'
/** Text of the agent_message_chunk updates scoped to one session id. */
function messageTextFor(updates: { sessionId?: string; update: CapturedUpdate }[], sessionId: string): string {
return updates
.filter(u => u.sessionId === sessionId && u.update.sessionUpdate === 'agent_message_chunk')
.map(u => (u.update.sessionUpdate === 'agent_message_chunk' && u.update.content.type === 'text' ? u.update.content.text : ''))
.join('')
}
describe('acp bridge — RFC 011 multi-session isolation', () => {
let storageDir: string
let harness: BridgeHarness | undefined
beforeEach(async () => { storageDir = await mkdtemp(join(tmpdir(), 'acp-multi-')) })
afterEach(async () => {
if (harness) await harness.dispose()
harness = undefined
await rm(storageDir, { recursive: true, force: true })
})
it('two sessions stream concurrently without interleaving their updates', async () => {
// Each session's prompt answer must arrive only on its own sessionId. The
// scripted adapter answers in send order; both prompts run, and the bridge
// demuxes every chunk by session id.
harness = await makeBridgeHarness({ storageDir, script: [textResponse('answer-A'), textResponse('answer-B')] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const a = (await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })).sessionId
const b = (await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })).sessionId
const [ra, rb] = await Promise.all([
harness.client.prompt({ sessionId: a, prompt: [{ type: 'text', text: 'go A' }] }),
harness.client.prompt({ sessionId: b, prompt: [{ type: 'text', text: 'go B' }] }),
])
expect(ra.stopReason).toBe('end_turn')
expect(rb.stopReason).toBe('end_turn')
// A's text landed only on A; B's only on B (strict id demux, no interleave).
expect(messageTextFor(harness.sessionUpdates, a)).toContain('answer-A')
expect(messageTextFor(harness.sessionUpdates, a)).not.toContain('answer-B')
expect(messageTextFor(harness.sessionUpdates, b)).toContain('answer-B')
expect(messageTextFor(harness.sessionUpdates, b)).not.toContain('answer-A')
})
it('cancel in one session leaves the other session untouched', async () => {
// Session A hangs; session B completes normally. Cancelling A settles ONLY
// A as cancelled and never disturbs B's stream or result.
harness = await makeBridgeHarness({ storageDir, script: ['hang', textResponse('B done')] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const a = (await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })).sessionId
const b = (await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })).sessionId
const aPromise = harness.client.prompt({ sessionId: a, prompt: [{ type: 'text', text: 'hang A' }] })
await new Promise(r => setTimeout(r, 30))
await harness.client.cancel({ sessionId: a })
expect((await aPromise).stopReason).toBe('cancelled')
// B runs to completion, unaffected by A's cancel.
const rb = await harness.client.prompt({ sessionId: b, prompt: [{ type: 'text', text: 'go B' }] })
expect(rb.stopReason).toBe('end_turn')
expect(messageTextFor(harness.sessionUpdates, b)).toContain('B done')
})
it('enforces one in-flight prompt PER session independently', async () => {
harness = await makeBridgeHarness({ storageDir, script: ['hang', 'hang'] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const a = (await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })).sessionId
const b = (await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })).sessionId
// One in-flight prompt in EACH session is allowed (independent limits).
const aPromise = harness.client.prompt({ sessionId: a, prompt: [{ type: 'text', text: 'one A' }] })
const bPromise = harness.client.prompt({ sessionId: b, prompt: [{ type: 'text', text: 'one B' }] })
await new Promise(r => setTimeout(r, 30))
// A second prompt in A is rejected, but B's in-flight prompt is unaffected.
await expect(harness.client.prompt({ sessionId: a, prompt: [{ type: 'text', text: 'two A' }] }))
.rejects.toThrow(/already in flight/)
await harness.client.cancel({ sessionId: a })
await harness.client.cancel({ sessionId: b })
expect((await aPromise).stopReason).toBe('cancelled')
expect((await bPromise).stopReason).toBe('cancelled')
})
it('a cancel for a non-existent session id is a silent no-op (does not touch others)', async () => {
harness = await makeBridgeHarness({ storageDir, script: [textResponse('A done')] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const a = (await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })).sessionId
await expect(harness.client.cancel({ sessionId: 'ghost' })).resolves.toBeUndefined()
// A still works after a cancel for an unknown id.
const ra = await harness.client.prompt({ sessionId: a, prompt: [{ type: 'text', text: 'go A' }] })
expect(ra.stopReason).toBe('end_turn')
})
it('disposing the whole bridge drains all live sessions to quiescence', async () => {
harness = await makeBridgeHarness({ storageDir, script: ['hang', 'hang'] })
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
const a = (await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })).sessionId
const b = (await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })).sessionId
const agentA = harness.ctx.agents.get(AgentId(a))!
const agentB = harness.ctx.agents.get(AgentId(b))!
// Wait deterministically for BOTH agents to enter `running` (not a fixed
// sleep — agent startup latency is unbounded on a loaded worker).
const running = (agent: typeof agentA) => agent.status === 'running'
? Promise.resolve()
: new Promise<void>((resolve) => {
const dispose = harness!.ctx.on('agent/status', (subject, status) => {
if (subject === agent && status === 'running') { dispose(); resolve() }
})
})
void harness.client.prompt({ sessionId: a, prompt: [{ type: 'text', text: 'go A' }] }).catch(() => {})
void harness.client.prompt({ sessionId: b, prompt: [{ type: 'text', text: 'go B' }] }).catch(() => {})
await Promise.all([running(agentA), running(agentB)])
expect(agentA.status).toBe('running')
expect(agentB.status).toBe('running')
await harness.ctx.fiber.dispose()
// BOTH agents drained (not still running) — teardown reached quiescence
// across all sessions, not just one.
expect(agentA.status).not.toBe('running')
expect(agentB.status).not.toBe('running')
})
})

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/**
* Property-based protocol-shape tests for the ACP update stream (RFC 001 →
* ADR 0013 precedent). Fuzz arbitrary harness `SessionEvent` sequences through
* the pure `streamSessionEventUpdate` translator and assert the invariants an
* ACP client relies on:
*
* - every emitted update is a legal `SessionUpdate` variant;
* - a `tool_call_update` for a given id is never emitted before a `tool_call`
* for that id (the client must see the pending call before its completion);
* - the translator is a pure function of the event (same event → same updates),
* so live streaming and `session/load` replay produce identical streams.
*
* Pure-function fuzzing (no live loop) keeps these deterministic — a failure is
* a real finding, not timing noise.
*/
import { describe, expect, it } from 'vitest'
import fc from 'fast-check'
import { CallId } from '@deepseek-ai/dsh-llm'
import { SessionId, type SessionEvent } from '@deepseek-ai/dsh-session'
import type { SessionNotification } from '@agentclientprotocol/sdk'
import { streamSessionEventUpdate } from '../src/index'
const LEGAL_UPDATE_KINDS = new Set([
'agent_message_chunk',
'agent_thought_chunk',
'tool_call',
'tool_call_update',
])
/**
* Build a WELL-FORMED harness event sequence: a list of "actions" where a tool
* result can only reference a call already opened earlier. This mirrors what
* the loop actually appends (tool/call always precedes its tool/result), so the
* ordering invariant is asserted over realistic logs, not arbitrary noise.
*/
type Action =
| { kind: 'text'; text: string }
| { kind: 'reasoning'; text: string }
| { kind: 'call'; id: string; name: string }
| { kind: 'result'; idx: number; isError: boolean }
| { kind: 'ignored' }
function actionsArb(): fc.Arbitrary<Action[]> {
const action: fc.Arbitrary<Action> = fc.oneof(
fc.string().map((text): Action => ({ kind: 'text', text })),
fc.string().map((text): Action => ({ kind: 'reasoning', text })),
fc.record({ id: fc.string({ minLength: 1 }), name: fc.string() }).map(({ id, name }): Action => ({ kind: 'call', id, name })),
fc.record({ idx: fc.nat(), isError: fc.boolean() }).map(({ idx, isError }): Action => ({ kind: 'result', idx, isError })),
fc.constant<Action>({ kind: 'ignored' }),
)
return fc.array(action, { maxLength: 30 })
}
/** Lower well-formed actions into a harness event sequence. */
function actionsToEvents(actions: Action[]): SessionEvent[] {
const events: SessionEvent[] = []
const openCalls: string[] = []
for (const a of actions) {
switch (a.kind) {
case 'text':
events.push({ type: 'assistant/chunk', seq: 0, time: 0, data: { turn: 1, step: 1, chunk: { type: 'text-delta', index: 0, text: a.text } } })
break
case 'reasoning':
events.push({ type: 'assistant/chunk', seq: 0, time: 0, data: { turn: 1, step: 1, chunk: { type: 'reasoning-delta', index: 0, text: a.text } } })
break
case 'call':
openCalls.push(a.id)
events.push({ type: 'tool/call', seq: 0, time: 0, data: { turn: 1, step: 1, callId: CallId(a.id), name: a.name, arguments: '{}' } })
break
case 'result': {
// Only emit a result for an already-opened call (well-formedness).
if (openCalls.length === 0) break
const id = openCalls[a.idx % openCalls.length]!
events.push({ type: 'tool/result', seq: 0, time: 0, data: { turn: 1, step: 1, callId: CallId(id), content: [], isError: a.isError } })
break
}
case 'ignored':
events.push({ type: 'turn/end', seq: 0, time: 0, data: { turn: 1, reason: { kind: 'completed' } } })
break
}
}
return events
}
function runStream(events: SessionEvent[]): SessionNotification['update'][] {
const out: SessionNotification['update'][] = []
for (const event of events) streamSessionEventUpdate(SessionId('s1'), event, n => out.push(n.update))
return out
}
describe('ACP update-stream invariants (property-based)', () => {
it('every emitted update is a legal SessionUpdate variant', () => {
fc.assert(fc.property(actionsArb(), (actions) => {
for (const update of runStream(actionsToEvents(actions))) {
expect(LEGAL_UPDATE_KINDS.has(update.sessionUpdate)).toBe(true)
}
}))
})
it('never emits a tool_call_update for an id before that id\'s tool_call', () => {
fc.assert(fc.property(actionsArb(), (actions) => {
const seenCall = new Set<string>()
for (const update of runStream(actionsToEvents(actions))) {
if (update.sessionUpdate === 'tool_call') {
seenCall.add(update.toolCallId)
} else if (update.sessionUpdate === 'tool_call_update') {
expect(seenCall.has(update.toolCallId)).toBe(true)
}
}
}))
})
it('is a pure function of the event (replay equals live)', () => {
fc.assert(fc.property(actionsArb(), (actions) => {
const events = actionsToEvents(actions)
expect(runStream(events)).toEqual(runStream(events))
}))
})
})

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import { describe, expect, it } from 'vitest'
import { CallId } from '@deepseek-ai/dsh-llm'
import { SessionId, type SessionEvent } from '@deepseek-ai/dsh-session'
import type { SessionNotification } from '@agentclientprotocol/sdk'
import type { ToolDefinition, ToolRegistry } from '@deepseek-ai/dsh-tools'
import { streamSessionEventUpdate, agentOptions, ToolPresenter } from '../src/index'
/** Collect the updates a single event produces (no presenter → generic fallback). */
function updatesFor(event: SessionEvent): SessionNotification['update'][] {
const out: SessionNotification['update'][] = []
streamSessionEventUpdate(SessionId('s1'), event, n => out.push(n.update))
return out
}
/** Collect the updates emitted by the live prompt stream (user echo suppressed). */
function liveUpdatesFor(event: SessionEvent): SessionNotification['update'][] {
const out: SessionNotification['update'][] = []
streamSessionEventUpdate(SessionId('s1'), event, n => out.push(n.update), undefined, undefined, { includeUserMessages: false })
return out
}
/** A tiny tool registry stub exposing just `get` for {@link ToolPresenter}. */
function registryOf(...tools: ToolDefinition[]): Pick<ToolRegistry, 'get'> {
const map = new Map(tools.map(t => [t.name, t]))
return { get: name => map.get(name) }
}
function evt<T extends SessionEvent['type']>(type: T, data: Extract<SessionEvent, { type: T }>['data']): SessionEvent {
return { type, seq: 0, time: 0, data } as SessionEvent
}
describe('streamSessionEventUpdate', () => {
it('maps assistant/chunk text-delta to agent_message_chunk', () => {
expect(updatesFor(evt('assistant/chunk', { turn: 1, step: 1, chunk: { type: 'text-delta', index: 0, text: 'hi' } })))
.toEqual([{ sessionUpdate: 'agent_message_chunk', content: { type: 'text', text: 'hi' } }])
})
it('maps assistant/chunk reasoning-delta to agent_thought_chunk', () => {
expect(updatesFor(evt('assistant/chunk', { turn: 1, step: 1, chunk: { type: 'reasoning-delta', index: 0, text: 'mm' } })))
.toEqual([{ sessionUpdate: 'agent_thought_chunk', content: { type: 'text', text: 'mm' } }])
})
it('produces no update for a non-text/reasoning chunk (e.g. block-start)', () => {
expect(updatesFor(evt('assistant/chunk', { turn: 1, step: 1, chunk: { type: 'block-start', index: 0, blockType: 'text' } })))
.toEqual([])
})
it('maps tool/call to an in_progress tool_call with inferred kind and parsed rawInput (generic fallback, no presenter)', () => {
const updates = updatesFor(evt('tool/call', { turn: 1, step: 1, callId: CallId('c1'), name: 'bash', arguments: '{"command":"ls"}' }))
expect(updates).toEqual([{
sessionUpdate: 'tool_call',
toolCallId: 'c1',
title: 'bash',
kind: 'execute',
status: 'in_progress',
rawInput: { command: 'ls' },
}])
})
it('infers tool kinds: read*/write*/edit*/other', () => {
const kind = (name: string): unknown =>
updatesFor(evt('tool/call', { turn: 1, step: 1, callId: CallId('c'), name, arguments: '' }))[0]
expect((kind('read_file') as { kind: string }).kind).toBe('read')
expect((kind('write') as { kind: string }).kind).toBe('edit')
expect((kind('edit_file') as { kind: string }).kind).toBe('edit')
expect((kind('frobnicate') as { kind: string }).kind).toBe('other')
})
it('falls back to the raw argument string when tool arguments are not JSON', () => {
const update = updatesFor(evt('tool/call', { turn: 1, step: 1, callId: CallId('c1'), name: 'bash', arguments: 'not json' }))[0]
expect((update as { rawInput: unknown }).rawInput).toBe('not json')
})
it('maps tool/result to completed/failed tool_call_update with text content', () => {
const ok = updatesFor(evt('tool/result', { turn: 1, step: 1, callId: CallId('c1'), content: [{ type: 'text', text: 'out' }], isError: false }))
expect(ok).toEqual([{
sessionUpdate: 'tool_call_update',
toolCallId: 'c1',
status: 'completed',
content: [{ type: 'content', content: { type: 'text', text: 'out' } }],
}])
const failed = updatesFor(evt('tool/result', { turn: 1, step: 1, callId: CallId('c2'), content: [], isError: true }))
expect((failed[0] as { status: string }).status).toBe('failed')
})
it('drops non-text tool-result content (text-only)', () => {
const update = updatesFor(evt('tool/result', {
turn: 1, step: 1, callId: CallId('c1'),
content: [{ type: 'image', url: 'https://x/y.png' }],
isError: false,
}))[0]
expect((update as { content: unknown[] }).content).toEqual([])
})
it('maps user/message text blocks to user_message_chunk (load replays the user side)', () => {
// A text block surfaces; a non-text block (here a tool-call) is skipped, so
// only the text chunk is emitted.
expect(updatesFor(evt('user/message', {
content: [
{ type: 'text', text: 'hi' },
{ type: 'tool-call', id: CallId('c'), name: 'bash', arguments: '{}' },
],
source: { kind: 'user' },
}))).toEqual([{ sessionUpdate: 'user_message_chunk', content: { type: 'text', text: 'hi' } }])
// A user/message with no text-bearing blocks produces no chunk.
expect(updatesFor(evt('user/message', { content: [], source: { kind: 'user' } }))).toEqual([])
})
it('can suppress user/message chunks for live prompt turns', () => {
expect(liveUpdatesFor(evt('user/message', {
content: [{ type: 'text', text: 'hi' }],
source: { kind: 'user' },
}))).toEqual([])
})
it('produces no update for boundary/other event types', () => {
expect(updatesFor(evt('turn/start', { turn: 1, trigger: { kind: 'message', source: { kind: 'user' } } }))).toEqual([])
expect(updatesFor(evt('turn/end', { turn: 1, reason: { kind: 'completed' } }))).toEqual([])
expect(updatesFor(evt('step/start', { turn: 1, step: 1 }))).toEqual([])
})
})
describe('ToolPresenter (tool-owned presentation via the tool registry)', () => {
/** A tool whose presentCall/presentResult mirror what tool-bash declares. */
const bashLike: ToolDefinition = {
name: 'bash',
description: 'run a command',
parameters: {},
execute: async () => [],
presentCall: (args: unknown) => {
const a = args as { command: string; description: string }
return { title: a.description, kind: 'execute', rawInput: a.command }
},
presentResult: (_args: unknown, result: { content: { type: string }[] }) => ({
content: [{ type: 'text', text: `wrapped:${result.content.length}` }],
}),
}
function updatesWith(presenter: ToolPresenter, ...events: SessionEvent[]): SessionNotification['update'][] {
const out: SessionNotification['update'][] = []
for (const event of events) streamSessionEventUpdate(SessionId('s1'), event, n => out.push(n.update), presenter)
return out
}
it('tool/call uses the tool: description→title, command→rawInput, tool kind', () => {
const presenter = new ToolPresenter(registryOf(bashLike))
const [update] = updatesWith(presenter, evt('tool/call', {
turn: 1, step: 1, callId: CallId('c1'), name: 'bash',
arguments: JSON.stringify({ command: 'ls -la', description: 'List files' }),
}))
expect(update).toEqual({
sessionUpdate: 'tool_call',
toolCallId: 'c1',
title: 'List files',
kind: 'execute',
status: 'in_progress',
rawInput: 'ls -la',
})
})
it('tool/result uses the tool to reformat content (resolved by the remembered tool/call)', () => {
const presenter = new ToolPresenter(registryOf(bashLike))
const updates = updatesWith(
presenter,
evt('tool/call', { turn: 1, step: 1, callId: CallId('c1'), name: 'bash', arguments: JSON.stringify({ command: 'x', description: 'd' }) }),
evt('tool/result', { turn: 1, step: 1, callId: CallId('c1'), content: [{ type: 'text', text: 'out' }], isError: false }),
)
expect(updates[1]).toEqual({
sessionUpdate: 'tool_call_update',
toolCallId: 'c1',
status: 'completed',
content: [{ type: 'content', content: { type: 'text', text: 'wrapped:1' } }],
})
})
it('a result with NO preceding call (unknown callId) falls back to the raw content', () => {
const presenter = new ToolPresenter(registryOf(bashLike))
// No tool/call for c9 → presenter has nothing remembered → generic fallback.
const [update] = updatesWith(presenter, evt('tool/result', {
turn: 1, step: 1, callId: CallId('c9'), content: [{ type: 'text', text: 'raw' }], isError: false,
}))
expect(update).toEqual({
sessionUpdate: 'tool_call_update',
toolCallId: 'c9',
status: 'completed',
content: [{ type: 'content', content: { type: 'text', text: 'raw' } }],
})
})
it('a tool with no presentCall/presentResult gets the generic fallback (title = name)', () => {
const plain: ToolDefinition = { name: 'plain', description: 'p', parameters: {}, execute: async () => [] }
const presenter = new ToolPresenter(registryOf(plain))
const [update] = updatesWith(presenter, evt('tool/call', {
turn: 1, step: 1, callId: CallId('c1'), name: 'plain', arguments: '{"a":1}',
}))
expect(update).toMatchObject({ title: 'plain', kind: 'other', rawInput: { a: 1 } })
})
it('a presentation that omits kind/content/rawInput uses the defaults (kind other, raw result content kept)', () => {
// A minimal tool-owned presentation: presentCall returns only a title (no
// kind → defaults to `other`, no rawInput → omitted); presentResult returns
// only a title (no content → the raw result content is kept).
const minimal: ToolDefinition = {
name: 'mini',
description: 'm',
parameters: {},
execute: async () => [],
presentCall: () => ({ title: 'Doing a thing' }),
presentResult: () => ({ title: 'Did the thing' }),
}
const presenter = new ToolPresenter(registryOf(minimal))
const updates = updatesWith(
presenter,
evt('tool/call', { turn: 1, step: 1, callId: CallId('c1'), name: 'mini', arguments: '{}' }),
evt('tool/result', { turn: 1, step: 1, callId: CallId('c1'), content: [{ type: 'text', text: 'kept' }], isError: false }),
)
// No kind → 'other'; no rawInput key at all.
expect(updates[0]).toEqual({ sessionUpdate: 'tool_call', toolCallId: 'c1', title: 'Doing a thing', kind: 'other', status: 'in_progress' })
// Title replaced; content falls back to the raw result content.
expect(updates[1]).toEqual({
sessionUpdate: 'tool_call_update',
toolCallId: 'c1',
status: 'completed',
content: [{ type: 'content', content: { type: 'text', text: 'kept' } }],
title: 'Did the thing',
})
})
it('holds ONLY in-flight calls: the callId entry is removed once its result is presented', () => {
const presenter = new ToolPresenter(registryOf(bashLike))
updatesWith(
presenter,
evt('tool/call', { turn: 1, step: 1, callId: CallId('c1'), name: 'bash', arguments: JSON.stringify({ command: 'x', description: 'd' }) }),
evt('tool/result', { turn: 1, step: 1, callId: CallId('c1'), content: [{ type: 'text', text: 'o' }], isError: false }),
)
// A SECOND result for the same callId now finds nothing remembered, so it
// falls back to raw content (proving the first result consumed the entry —
// the map does not retain finished calls).
const [late] = updatesWith(presenter, evt('tool/result', {
turn: 1, step: 1, callId: CallId('c1'), content: [{ type: 'text', text: 'late' }], isError: false,
}))
expect(late).toMatchObject({ content: [{ type: 'content', content: { type: 'text', text: 'late' } }] })
})
it('a THROWING presentCall/presentResult is contained: generic fallback + onError, never propagates', () => {
// A buggy tool whose display callbacks throw must NOT fail a live turn or a
// session/load replay (AGENTS.md "contain callback exceptions at the
// boundary"). The presenter swallows the throw, reports via onError, and
// falls back to the generic presentation.
const boom: ToolDefinition = {
name: 'boom',
description: 'b',
parameters: {},
execute: async () => [],
presentCall: () => { throw new Error('call boom') },
presentResult: () => { throw new Error('result boom') },
}
const errors: string[] = []
const presenter = new ToolPresenter(registryOf(boom), msg => errors.push(msg))
const updates = updatesWith(
presenter,
evt('tool/call', { turn: 1, step: 1, callId: CallId('c1'), name: 'boom', arguments: '{"a":1}' }),
evt('tool/result', { turn: 1, step: 1, callId: CallId('c1'), content: [{ type: 'text', text: 'raw' }], isError: false }),
)
// tool/call fell back to title=name, raw args as rawInput.
expect(updates[0]).toMatchObject({ sessionUpdate: 'tool_call', title: 'boom', kind: 'other', rawInput: { a: 1 } })
// tool/result fell back to the raw content.
expect(updates[1]).toMatchObject({ sessionUpdate: 'tool_call_update', content: [{ type: 'content', content: { type: 'text', text: 'raw' } }] })
// Both throws were reported, not propagated.
expect(errors).toHaveLength(2)
expect(errors[0]).toContain('presentCall threw')
expect(errors[1]).toContain('presentResult threw')
})
it('contains a throwing presenter even with the DEFAULT (no-op) onError sink', () => {
// Constructed without an onError sink (the default `() => {}`): a throwing
// presenter is still swallowed and falls back generically — the absence of a
// logger must not turn a display bug into a propagated exception.
const boom: ToolDefinition = {
name: 'boom',
description: 'b',
parameters: {},
execute: async () => [],
presentCall: () => { throw new Error('call boom') },
presentResult: () => { throw new Error('result boom') },
}
const presenter = new ToolPresenter(registryOf(boom))
const updates = updatesWith(
presenter,
evt('tool/call', { turn: 1, step: 1, callId: CallId('c1'), name: 'boom', arguments: '{}' }),
evt('tool/result', { turn: 1, step: 1, callId: CallId('c1'), content: [{ type: 'text', text: 'raw' }], isError: false }),
)
expect(updates[0]).toMatchObject({ sessionUpdate: 'tool_call', title: 'boom' })
expect(updates[1]).toMatchObject({ sessionUpdate: 'tool_call_update', content: [{ type: 'content', content: { type: 'text', text: 'raw' } }] })
})
})
describe('terminal-card mapping (capability-gated)', () => {
// A tool that asks to render as a terminal — a stand-in for tool-bash's shape,
// letting us drive the bridge's terminal mapping without the real executor.
type CallTerm = { cwd?: string } | undefined
type ResultTerm = { output?: string; exitCode?: number; signal?: string } | undefined
const termTool = (callTerminal: CallTerm, resultTerminal: ResultTerm): ToolDefinition => ({
name: 'bash',
description: 'run a command',
parameters: {},
execute: async () => [],
presentCall: (args: unknown) => ({
title: (args as { command: string }).command,
kind: 'execute',
rawInput: (args as { command: string }).command,
content: [{ type: 'text', text: (args as { description: string }).description }],
...callTerminal !== undefined ? { terminal: callTerminal } : {},
}),
presentResult: () => ({
content: [{ type: 'text', text: 'fallback' }],
...resultTerminal !== undefined ? { terminal: resultTerminal } : {},
}),
})
const callEvent = evt('tool/call', { turn: 1, step: 1, callId: CallId('c1'), name: 'bash', arguments: JSON.stringify({ command: 'echo hi', description: 'Greet' }) })
const resultEvent = evt('tool/result', { turn: 1, step: 1, callId: CallId('c1'), content: [{ type: 'text', text: 'hi\n' }], isError: false })
function termUpdates(tool: ToolDefinition, enabled: boolean, cwd: string | undefined, ...events: SessionEvent[]): SessionNotification['update'][] {
const presenter = new ToolPresenter(registryOf(tool))
const out: SessionNotification['update'][] = []
for (const event of events) streamSessionEventUpdate(SessionId('s1'), event, n => out.push(n.update), presenter, { enabled, cwd })
return out
}
it('capability ON: description content THEN terminal block; cwd from the session header when the tool gives none', () => {
const [call, update] = termUpdates(termTool({}, { output: 'hi\n', exitCode: 0 }), true, '/work/proj', callEvent, resultEvent)
expect(call).toMatchObject({
sessionUpdate: 'tool_call',
content: [
{ type: 'content', content: { type: 'text', text: 'Greet' } },
{ type: 'terminal', terminalId: 'c1' },
],
_meta: { terminal_info: { terminal_id: 'c1', cwd: '/work/proj' } },
})
// The update OMITS content (it would clobber the terminal block) and carries output + exit.
expect(update).toEqual({
sessionUpdate: 'tool_call_update',
toolCallId: 'c1',
status: 'completed',
_meta: { terminal_output: { terminal_id: 'c1', data: 'hi\n' }, terminal_exit: { terminal_id: 'c1', exit_code: 0 } },
})
})
it('capability ON: an ABSOLUTE tool cwd wins; a RELATIVE one resolves against the session cwd', () => {
const [absCall] = termUpdates(termTool({ cwd: '/explicit/abs' }, { output: 'x' }), true, '/work/proj', callEvent)
expect((absCall as unknown as { _meta: { terminal_info: { cwd: string } } })._meta.terminal_info.cwd).toBe('/explicit/abs')
const [relCall] = termUpdates(termTool({ cwd: 'sub/dir' }, { output: 'x' }), true, '/work/proj', callEvent)
// Relative workdir resolved against the session cwd — the card header matches
// where execution actually ran (tool-bash resolves the same way).
expect((relCall as unknown as { _meta: { terminal_info: { cwd: string } } })._meta.terminal_info.cwd).toBe('/work/proj/sub/dir')
// No session cwd to resolve against → the relative tool cwd is passed through as-is.
const [noSessionCwd] = termUpdates(termTool({ cwd: 'rel/only' }, { output: 'x' }), true, undefined, callEvent)
expect((noSessionCwd as unknown as { _meta: { terminal_info: { cwd: string } } })._meta.terminal_info.cwd).toBe('rel/only')
})
it('capability ON: a signal kill maps to terminal_exit.signal', () => {
const [, update] = termUpdates(termTool({}, { output: 'gone', signal: 'SIGKILL' }), true, '/w', callEvent, resultEvent)
expect((update as unknown as { _meta: { terminal_exit: unknown } })._meta.terminal_exit).toEqual({ terminal_id: 'c1', signal: 'SIGKILL' })
})
it('capability ON: a terminal result with output but NO exit/signal emits terminal_output and NO exit pill', () => {
// A terminal-rendering tool that reports no structured exit (neither exitCode
// nor signal) — the card shows output but no exit pill.
const [, update] = termUpdates(termTool({}, { output: 'partial' }), true, '/w', callEvent, resultEvent)
const meta = (update as unknown as { _meta: { terminal_output?: unknown; terminal_exit?: unknown } })._meta
expect(meta.terminal_output).toEqual({ terminal_id: 'c1', data: 'partial' })
expect(meta.terminal_exit).toBeUndefined()
})
it('capability OFF: no terminal block or _meta; the description content and fenced result still render', () => {
const [call, update] = termUpdates(termTool({}, { output: 'hi\n' }), false, '/work/proj', callEvent, resultEvent)
expect(call).toEqual({
sessionUpdate: 'tool_call',
toolCallId: 'c1',
title: 'echo hi',
kind: 'execute',
status: 'in_progress',
rawInput: 'echo hi',
content: [{ type: 'content', content: { type: 'text', text: 'Greet' } }],
})
expect(update).toEqual({
sessionUpdate: 'tool_call_update',
toolCallId: 'c1',
status: 'completed',
content: [{ type: 'content', content: { type: 'text', text: 'fallback' } }],
})
})
it('orphan guard: a result-side terminal with NO call-side terminal is dropped (no orphan terminal_output)', () => {
// presentCall declares NO terminal, but presentResult returns one — the
// bridge must not emit _meta.terminal_output for a terminal Zed never made.
const [call, update] = termUpdates(termTool(undefined, { output: 'hi\n', exitCode: 0 }), true, '/w', callEvent, resultEvent)
// The call had no terminal → ordinary tool_call (description content, no _meta).
expect((call as { _meta?: unknown })._meta).toBeUndefined()
expect((call as { content: unknown }).content).toEqual([{ type: 'content', content: { type: 'text', text: 'Greet' } }])
// The result falls back to text content; NO terminal _meta.
expect((update as { _meta?: unknown })._meta).toBeUndefined()
expect((update as { content: unknown }).content).toEqual([{ type: 'content', content: { type: 'text', text: 'fallback' } }])
})
})
describe('agentOptions', () => {
it('includes only the fields present in config', () => {
expect(agentOptions({})).toEqual({})
expect(agentOptions({ model: 'm' })).toEqual({ model: 'm' })
expect(agentOptions({ systemPrompt: 'sp' })).toEqual({ systemPrompt: 'sp' })
expect(agentOptions({ model: 'm', systemPrompt: 'sp' })).toEqual({ model: 'm', systemPrompt: 'sp' })
})
})

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import { afterEach, beforeEach, describe, expect, it } from 'vitest'
import { mkdtemp, rm } from 'node:fs/promises'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { defineTool } from '@deepseek-ai/dsh-tools'
import { AgentId } from '@deepseek-ai/dsh-agent'
import { PROTOCOL_VERSION } from '@agentclientprotocol/sdk'
import {
errorResponse,
makeBridgeHarness,
maxTokensResponse,
textResponse,
toolCallResponse,
type BridgeHarness,
} from './harness'
/** Boilerplate: initialize + create one session, returning its id. */
async function newSession(h: BridgeHarness, clientCapabilities: Record<string, unknown> = {}): Promise<string> {
await h.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities })
const { sessionId } = await h.client.newSession({ cwd: process.cwd(), mcpServers: [] })
return sessionId
}
describe('acp bridge — turn outcomes', () => {
let storageDir: string
let harness: BridgeHarness | undefined
beforeEach(async () => { storageDir = await mkdtemp(join(tmpdir(), 'acp-test-')) })
afterEach(async () => {
if (harness) await harness.dispose()
harness = undefined
await rm(storageDir, { recursive: true, force: true })
})
it('maps a max-tokens turn to stopReason max_tokens', async () => {
harness = await makeBridgeHarness({ storageDir, script: [maxTokensResponse('cut off')] })
const sessionId = await newSession(harness)
const res = await harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'go' }] })
expect(res.stopReason).toBe('max_tokens')
})
it('rejects the prompt RPC when a turn fails (no misleading end_turn)', async () => {
// ACP has no "error" stop reason; a failed turn must surface as a rejected
// session/prompt, not a normal end_turn that hides the failure from the
// client. The bridge rejects via the turn/end{error} log record.
harness = await makeBridgeHarness({ storageDir, script: [errorResponse('provider boom')] })
const sessionId = await newSession(harness)
await expect(harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'go' }] }))
.rejects.toThrow(/turn failed: provider boom/)
})
it('streams a tool call as tool_call then tool_call_update', async () => {
harness = await makeBridgeHarness({
storageDir,
script: [toolCallResponse('c1', 'bash', { command: 'echo hi' }), textResponse('done')],
})
harness.ctx.tools.register(defineTool({
name: 'bash',
description: 'run a command',
parameters: { command: { type: 'string' } },
async execute() { return [{ type: 'text', text: 'hi\n' }] },
}))
const sessionId = await newSession(harness)
await harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'run it' }] })
const toolCalls = harness.updates.filter(u => u.sessionUpdate === 'tool_call')
const toolUpdates = harness.updates.filter(u => u.sessionUpdate === 'tool_call_update')
expect(toolCalls).toHaveLength(1)
expect(toolCalls[0]).toMatchObject({ toolCallId: 'c1', title: 'bash', kind: 'execute', status: 'in_progress' })
expect(toolUpdates).toHaveLength(1)
expect(toolUpdates[0]).toMatchObject({ toolCallId: 'c1', status: 'completed' })
// Ordering invariant: the tool_call precedes its tool_call_update.
const callIdx = harness.updates.findIndex(u => u.sessionUpdate === 'tool_call')
const updIdx = harness.updates.findIndex(u => u.sessionUpdate === 'tool_call_update')
expect(callIdx).toBeLessThan(updIdx)
})
it('the REAL bash tool drives the tool-call UI end-to-end: command title + description block + console output', async () => {
// Use the SHIPPING tool (dsh-tool-bash + dsh-bash-local), not an inline
// stand-in, so this verifies the actual presentCall/presentResult the editor
// sees (AGENTS.md "prefer the real implementation over a mock in tests").
// The mock MODEL still scripts the tool call (no real LLM needed), but the
// tool and executor are real: a real `echo` runs and its real output flows
// back through the bridge.
harness = await makeBridgeHarness({
storageDir,
withBash: true,
script: [
toolCallResponse('c1', 'bash', { command: 'echo hello', description: 'Print a greeting' }),
textResponse('done'),
],
})
const sessionId = await newSession(harness)
await harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'greet' }] })
// presentCall: execute kind, title IS the command (an execute card hides
// rawInput, so the command is the title), the description rides as a content
// text block, the command is also rawInput for non-terminal UIs.
const call = harness.updates.find(u => u.sessionUpdate === 'tool_call')
expect(call).toMatchObject({
toolCallId: 'c1',
title: 'echo hello',
kind: 'execute',
rawInput: 'echo hello',
status: 'in_progress',
})
if (call?.sessionUpdate !== 'tool_call') throw new Error('expected a tool_call')
// Capability OFF: the description renders as the only content block (no terminal block).
expect(call.content).toEqual([{ type: 'content', content: { type: 'text', text: 'Print a greeting' } }])
// presentResult: the REAL command output, wrapped in a fenced console block.
const update = harness.updates.find(u => u.sessionUpdate === 'tool_call_update')
expect(update?.sessionUpdate).toBe('tool_call_update')
if (update?.sessionUpdate !== 'tool_call_update') throw new Error('expected a tool_call_update')
expect(update).toMatchObject({ toolCallId: 'c1', status: 'completed' })
const content = update.content as { content: { type: string; text: string } }[]
expect(content[0]?.content.text).toBe('```console\nhello\n```')
// Capability OFF (the default newSession): NO terminal _meta on either update.
expect((call as { _meta?: unknown })._meta).toBeUndefined()
expect((update as { _meta?: unknown })._meta).toBeUndefined()
})
it('with the terminal_output capability ON, a real bash call renders as a TERMINAL card (content + _meta + exit)', async () => {
// Drive the REAL bash tool, and advertise the Zed `_meta.terminal_output`
// capability in initialize. The bridge must then emit the terminal CARD: the
// description content block THEN a terminal content block + `_meta.terminal_info`
// (cwd header) on the call, and `_meta.terminal_output`/`terminal_exit` on the
// result — and OMIT the update's text content (it would clobber the card).
harness = await makeBridgeHarness({
storageDir,
withBash: true,
script: [toolCallResponse('c1', 'bash', { command: 'echo hi', description: 'Greet' }), textResponse('done')],
})
// Capability lives under clientCapabilities._meta.terminal_output.
const sessionId = await newSession(harness, { _meta: { terminal_output: true } })
await harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'greet' }] })
const call = harness.updates.find(u => u.sessionUpdate === 'tool_call')
if (call?.sessionUpdate !== 'tool_call') throw new Error('expected a tool_call')
// The description content block FIRST (renders above the card), then a
// terminal content block keyed by the callId; terminal_info carries the
// session cwd (the bridge fills it from the session header).
expect(call.content).toEqual([
{ type: 'content', content: { type: 'text', text: 'Greet' } },
{ type: 'terminal', terminalId: 'c1' },
])
expect((call._meta as { terminal_info?: unknown }).terminal_info).toEqual({ terminal_id: 'c1', cwd: process.cwd() })
const update = harness.updates.find(u => u.sessionUpdate === 'tool_call_update')
if (update?.sessionUpdate !== 'tool_call_update') throw new Error('expected a tool_call_update')
// In terminal mode the text content is OMITTED (a tool_call_update.content
// REPLACES the call's content — it would clobber the terminal block).
expect(update.content).toBeUndefined()
// Output rides on _meta.terminal_output; the parsed exit on _meta.terminal_exit.
const meta = update._meta as {
terminal_output?: { terminal_id: string; data: string }
terminal_exit?: { terminal_id: string; exit_code?: number; signal?: string }
}
expect(meta.terminal_output).toEqual({ terminal_id: 'c1', data: 'hi\n' })
expect(meta.terminal_exit).toEqual({ terminal_id: 'c1', exit_code: 0 })
})
it('the terminal capability is snapshotted per-session: a later initialize cannot desync a call/result', async () => {
// The session is created with the capability ON. A SECOND initialize then
// turns it OFF at the connection level — but this session keeps its snapshot,
// so its bash call STILL renders as a terminal card (call + result agree).
// Without the snapshot, the result path would re-read the now-OFF capability
// and either clobber the card (content sent) or be inconsistent with the call.
harness = await makeBridgeHarness({
storageDir,
withBash: true,
script: [toolCallResponse('c1', 'bash', { command: 'echo hi', description: 'Greet' }), textResponse('done')],
})
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: { _meta: { terminal_output: true } } })
const { sessionId } = await harness.client.newSession({ cwd: process.cwd(), mcpServers: [] })
// A re-initialize that DROPS the capability after the session exists.
await harness.client.initialize({ protocolVersion: PROTOCOL_VERSION, clientCapabilities: {} })
await harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'greet' }] })
const call = harness.updates.find(u => u.sessionUpdate === 'tool_call')
if (call?.sessionUpdate !== 'tool_call') throw new Error('expected a tool_call')
// Still a terminal card (the session's snapshot, not the mutated connection cap).
expect((call._meta as { terminal_info?: unknown }).terminal_info).toBeDefined()
const update = harness.updates.find(u => u.sessionUpdate === 'tool_call_update')
if (update?.sessionUpdate !== 'tool_call_update') throw new Error('expected a tool_call_update')
// The result AGREES with the call: terminal output present, content omitted.
expect(update.content).toBeUndefined()
expect((update._meta as { terminal_output?: unknown }).terminal_output).toBeDefined()
})
it('a throwing tool presenter does not break the turn: the bridge falls back generically', async () => {
// A buggy tool whose presentCall throws must not fail the live turn — the
// bridge's presenter contains the throw (logging via its onError sink) and
// falls back to the generic title=name presentation. Exercises the real
// bridge wiring of the per-session presenter's error sink.
harness = await makeBridgeHarness({
storageDir,
script: [toolCallResponse('c1', 'kaboom', { x: 1 }), textResponse('done')],
})
harness.ctx.tools.register(defineTool({
name: 'kaboom',
description: 'explodes when presented',
parameters: { x: { type: 'number' } },
async execute() { return [{ type: 'text', text: 'ok' }] },
presentCall: () => { throw new Error('present boom') },
}))
const sessionId = await newSession(harness)
const res = await harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'go' }] })
expect(res.stopReason).toBe('end_turn') // the turn completed despite the throw
const call = harness.updates.find(u => u.sessionUpdate === 'tool_call')
// Generic fallback: title is the tool name, raw args as rawInput.
expect(call).toMatchObject({ toolCallId: 'c1', title: 'kaboom', kind: 'other', rawInput: { x: 1 } })
const update = harness.updates.find(u => u.sessionUpdate === 'tool_call_update')
expect(update).toMatchObject({ toolCallId: 'c1', status: 'completed' })
})
it('a failing tool yields a failed tool_call_update', async () => {
harness = await makeBridgeHarness({
storageDir,
script: [toolCallResponse('c1', 'bash', { command: 'boom' }), textResponse('ok')],
})
harness.ctx.tools.register(defineTool({
name: 'bash',
description: 'run a command',
parameters: { command: { type: 'string' } },
async execute() { throw new Error('command failed') },
}))
const sessionId = await newSession(harness)
await harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'run it' }] })
const failed = harness.updates.filter(u => u.sessionUpdate === 'tool_call_update' && u.status === 'failed')
expect(failed).toHaveLength(1)
})
it('settles via the log fallback when a prior session/event listener throws (starvation)', async () => {
// A peer session/event listener that runs BEFORE the bridge's listener
// throws on turn/end (prepend: true puts it first). cordis emit stops at the
// throw, so the bridge's session/event listener never sees turn/end and
// cannot settle there. The agent/status idle-fallback must reconcile the
// prompt from the log so the RPC settles instead of hanging.
harness = await makeBridgeHarness({ storageDir, script: [textResponse('answer')] })
harness.ctx.on('session/event', (_s, event) => {
if (event.type === 'turn/end') throw new Error('peer listener boom')
}, { prepend: true })
const sessionId = await newSession(harness)
const res = await harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'go' }] })
expect(res.stopReason).toBe('end_turn')
})
it('log fallback REJECTS when the starved turn ended in error', async () => {
// Same starvation as above, but the turn fails: the idle-fallback must
// reject the RPC from the logged turn/end{error}, not resolve.
harness = await makeBridgeHarness({ storageDir, script: [errorResponse('starved boom')] })
harness.ctx.on('session/event', (_s, event) => {
if (event.type === 'turn/end') throw new Error('peer listener boom')
}, { prepend: true })
const sessionId = await newSession(harness)
await expect(harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'go' }] }))
.rejects.toThrow(/turn failed: starved boom/)
})
it('log fallback infers the owning turn when turn/START capture is starved', async () => {
// A peer listener throws on turn/START (not turn/end): the bridge never
// captures inflight.turn via the live stream. A throwing turn/start listener
// also FAILS the turn (the throw is recorded as the turn's error). Without
// the watermark inference the fallback would resolve `cancelled` (the bug);
// with it, it infers the owning turn from the log and REJECTS from that
// turn's error turn/end. (The model's own error is never reached — the turn
// failed at start — so the rejection carries the listener's failure.)
harness = await makeBridgeHarness({ storageDir, script: [textResponse('never runs')] })
harness.ctx.on('session/event', (_s, event) => {
if (event.type === 'turn/start') throw new Error('peer listener boom on start')
}, { prepend: true })
const sessionId = await newSession(harness)
await expect(harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'go' }] }))
.rejects.toThrow(/turn failed:/)
})
it('a between-turn injection does not settle the prompt early (message-trigger correlation)', async () => {
// A plugin injects context (a one-shot injection-triggered turn) right after
// the prompt is queued but before the prompt's own message turn runs. The
// bridge must NOT mistake the injection turn's turn/end for the prompt's —
// it correlates only to message-triggered turns. The prompt settles on its
// OWN turn with the real model answer.
harness = await makeBridgeHarness({ storageDir, script: [textResponse('real answer')] })
const sessionId = await newSession(harness)
const agent = harness.ctx.agents.get(AgentId(sessionId))!
// On the queued prompt, synchronously inject a one-shot context turn (idle
// inject writes turn/start{injection} → context/message → turn/end). Fire
// once so it lands between install and the prompt turn.
let injected = false
harness.ctx.on('agent/queued', (subject) => {
if (subject === agent && !injected) {
injected = true
agent.inject([{ type: 'text', text: 'ctx note' }], { source: { kind: 'plugin', plugin: 'test' } })
}
})
const res = await harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'go' }] })
expect(res.stopReason).toBe('end_turn')
const text = harness.updates
.filter(u => u.sessionUpdate === 'agent_message_chunk')
.map(u => (u.content.type === 'text' ? u.content.text : ''))
.join('')
expect(text).toContain('real answer')
})
it('rejects a second prompt while one is in flight', async () => {
harness = await makeBridgeHarness({ storageDir, script: ['hang'] })
const sessionId = await newSession(harness)
// Start the first prompt but do NOT await — it hangs in the model stream.
const first = harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'one' }] })
// Give the loop a tick to install the settle + start running.
await new Promise(r => setTimeout(r, 30))
await expect(harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'two' }] }))
.rejects.toThrow(/already in flight/)
// Cancel to settle the first so the harness disposes cleanly.
await harness.client.cancel({ sessionId })
await first
})
it('session/cancel aborts a running turn and settles the prompt as cancelled', async () => {
harness = await makeBridgeHarness({ storageDir, script: ['hang'] })
const sessionId = await newSession(harness)
const promptDone = harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'go' }] })
await new Promise(r => setTimeout(r, 30))
await harness.client.cancel({ sessionId })
const res = await promptDone
expect(res.stopReason).toBe('cancelled')
})
it('cancel right after prompt settles cancelled and leaves the agent idle, no leaked turn', async () => {
// Over the async JSON-RPC transport the loop usually wakes before cancel
// arrives, so this is a running/mid-step cancel (the synchronous pre-step
// DROP is unit-tested in agent-loop/cancel.spec.ts). The ACP-level guarantee:
// the prompt settles cancelled, the agent reaches idle, and no second/leaked
// turn runs afterward.
harness = await makeBridgeHarness({ storageDir, script: [textResponse('answer'), textResponse('leaked')] })
const sessionId = await newSession(harness)
const promptDone = harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'go' }] })
await harness.client.cancel({ sessionId })
const res = await promptDone
expect(res.stopReason).toBe('cancelled')
const agent = harness.ctx.agents.get(AgentId(sessionId))!
await agent.whenIdle()
// At most ONE turn ran (the cancelled one) — the cancel cleared the queue, so
// no second turn was batched or leaked. (A best-effort abort that left queued
// work could have started a second turn.)
const turnStarts = agent.session.events.filter(e => e.type === 'turn/start').length
expect(turnStarts).toBeLessThanOrEqual(1)
})
it('idle session/cancel then session/prompt runs the prompt (no intervening whenIdle)', async () => {
// The ACP bridge settles the cancel RPC synchronously and accepts the next
// prompt WITHOUT awaiting quiescence — so this drives cancel→prompt with NO
// whenIdle() between, the production race. An idle cancel must be a no-op that
// does NOT drop the following prompt.
harness = await makeBridgeHarness({ storageDir, script: [textResponse('real answer')] })
const sessionId = await newSession(harness)
// Cancel while idle (no prompt in flight) — a no-op.
await harness.client.cancel({ sessionId })
// Immediately prompt, no whenIdle() between.
const res = await harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'go' }] })
expect(res.stopReason).toBe('end_turn')
const text = harness.updates
.filter(u => u.sessionUpdate === 'agent_message_chunk')
.map(u => (u.content.type === 'text' ? u.content.text : ''))
.join('')
expect(text).toContain('real answer')
})
it('mid-stream cancel then an IMMEDIATE next prompt runs (no intervening whenIdle)', async () => {
// Cancel a running turn, then send the next prompt WITHOUT awaiting quiescence
// (the synchronous-settle path). The new prompt must run — the cancel marker
// must not leak onto it.
harness = await makeBridgeHarness({ storageDir, script: ['hang', textResponse('next answer')] })
const sessionId = await newSession(harness)
const a = harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'A' }] })
await new Promise(r => setTimeout(r, 30))
await harness.client.cancel({ sessionId })
expect((await a).stopReason).toBe('cancelled')
// Immediately — no whenIdle() — send the next prompt.
const b = await harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'B' }] })
expect(b.stopReason).toBe('end_turn')
const text = harness.updates
.filter(u => u.sessionUpdate === 'agent_message_chunk')
.map(u => (u.content.type === 'text' ? u.content.text : ''))
.join('')
expect(text).toContain('next answer')
})
it('a cancelled turn\'s late turn/end does not settle the NEXT prompt', async () => {
// Regression: prompt A runs; cancel settles A and frees the slot; A's
// aborted turn/end is still pending in the loop. Prompt B is sent before
// A's turn/end arrives. A's late turn/end (an EARLIER turn number) must NOT
// settle B — B owns a later turn. B then completes on its OWN turn/end.
harness = await makeBridgeHarness({ storageDir, script: ['hang', textResponse('B answer')] })
const sessionId = await newSession(harness)
const a = harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'A' }] })
await new Promise(r => setTimeout(r, 30)) // let A start running (turn 1)
await harness.client.cancel({ sessionId })
expect((await a).stopReason).toBe('cancelled')
// Immediately send B; its turn (2) is distinct from A's (1). If A's late
// turn/end leaked onto B, B would settle 'cancelled' instead of 'end_turn'.
const b = await harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'B' }] })
expect(b.stopReason).toBe('end_turn')
const text = harness.updates
.filter(u => u.sessionUpdate === 'agent_message_chunk')
.map(u => (u.content.type === 'text' ? u.content.text : ''))
.join('')
expect(text).toContain('B answer')
})
})