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import AgentRegistry from '@deepseek-ai/dsh-agent'
import type { Agent } from '@deepseek-ai/dsh-agent'
import { createUserMessage } from '@deepseek-ai/dsh-llm'
import SessionStore, { SESSION_FORMAT_VERSION, SessionId, SessionLogOffset } from '@deepseek-ai/dsh-session'
import type { SessionEvent, SessionHeader } from '@deepseek-ai/dsh-session'
import { RemoteError } from '@deepseek-ai/dsh-typert-protocol'
import { describe, expect, it, vi } from 'vitest'
import SessionController from '../src/index.ts'
import type { ApiSessionAgentController } from '../src/agent.ts'
import { createSessionTestController, testSessionPersistence } from './test-remote.ts'
const defaults = {
defaultModelSelection: () => ({ provider: 'fixture', model: 'fixture-model' }),
cwd: '/tmp',
}
describe('SessionController facade', () => {
it('does not require the Tools service', () => {
expect(SessionController.inject).not.toContain('tools')
})
it('owns Host service methods and publishes Agent lifecycle projections', async () => {
const ctx = new Context()
await ctx.plugin(SessionStore)
await ctx.plugin(AgentRegistry)
const sessionId = SessionId('controller-session')
const header: SessionHeader = {
version: SESSION_FORMAT_VERSION,
id: sessionId,
createdAt: 1,
cwd: '/workspace',
isSeeded: false,
}
const events: SessionEvent[] = []
const inspect = vi.fn(() => Promise.resolve({
meta: header,
inheritedEventCount: SessionLogOffset(0),
events,
}))
ctx.provide('sessionPersistence', testSessionPersistence(ctx, {
list: () => Promise.resolve([header]),
inspect,
}) as never)
let uploadResolver: ((sessionId: SessionId) => Promise<Agent>) | undefined
ctx.provide('fileUploads', {
registerAgentResolver: (resolve: (sessionId: SessionId) => Promise<Agent>) => {
uploadResolver = resolve
return () => {}
},
resolve: () => undefined,
bindPrompt: () => ({ commit: () => {}, [Symbol.dispose]: () => {} }),
retirePrompt: () => {},
} as never)
const controller = createSessionTestController(ctx, defaults)
const status = vi.fn()
const failure = vi.fn()
const activity = vi.fn()
ctx.on('api-session/status', status)
ctx.on('api-session/error', failure)
ctx.on('api-session/activity', activity)
await expect(controller.inspect(sessionId)).resolves.toEqual({
meta: header,
inheritedEventCount: SessionLogOffset(0),
events,
})
expect(inspect).toHaveBeenCalledOnce()
const session = ctx.sessions.create(sessionId, { meta: header })
const agent = {
id: sessionId,
session,
status: 'idle',
ctx,
} as Agent
await ctx.agents.register(agent)
const resolveUploadAgent = (id: SessionId): Promise<Agent> => {
if (uploadResolver === undefined) throw new Error('file upload resolver was not registered')
return uploadResolver(id)
}
await expect(resolveUploadAgent(sessionId)).resolves.toBe(agent)
const activationError = new RemoteError('session/not-found', 'missing upload session', { sessionId })
vi.spyOn(
(controller as unknown as { agents: ApiSessionAgentController }).agents,
'resolveAgent',
).mockResolvedValueOnce({ error: activationError })
await expect(resolveUploadAgent(sessionId)).rejects.toBe(activationError)
const consumeSelection = vi.spyOn(
(controller as unknown as { agents: ApiSessionAgentController }).agents,
'consumeSelection',
)
await expect(controller.resolveAgent(sessionId)).resolves.toEqual({ agent })
await expect(controller.inspect(sessionId)).resolves.toEqual({
meta: header,
inheritedEventCount: SessionLogOffset(0),
events,
})
expect(inspect).toHaveBeenCalledOnce()
ctx.emit('agent/status', { agent, status: 'running' })
ctx.emit('agent/error', { agent, turn: 1, step: 0, error: new Error('fixture failure') })
session.append('user/message', createUserMessage({
content: [{ type: 'text', text: 'hello' }],
source: { kind: 'user' },
}), { surfaceOp: 'append' })
session.append('user/message', createUserMessage({
content: [{ type: 'text', text: 'browser prompt' }],
source: { kind: 'user', rpcId: 'controller-rpc' as never },
}), { surfaceOp: 'append' })
expect(status).toHaveBeenCalledWith(sessionId, true)
expect(failure).toHaveBeenCalledWith(sessionId, expect.stringContaining('fixture failure'))
expect(activity).toHaveBeenCalledWith(sessionId, expect.any(Number))
session.append('request/header', {
header: { config: { provider: 'fixture', model: 'fixture-model' } },
reason: 'initial',
})
expect(consumeSelection).toHaveBeenCalledWith(
agent, 'fixture', 'fixture-model', undefined,
)
const unowned = ctx.sessions.create(SessionId('controller-unowned'), {
meta: { cwd: '/workspace' },
})
unowned.append('request/header', {
header: { config: { provider: 'fixture', model: 'other-model' } },
reason: 'initial',
})
expect(consumeSelection).toHaveBeenCalledTimes(1)
const abort = new AbortController()
const iterator = controller.follow({
address: { kind: 'session', sessionId },
}, abort.signal)[Symbol.asyncIterator]()
await expect(iterator.next()).resolves.toMatchObject({
done: false,
value: { type: 'snapshot', cursor: 2 },
})
abort.abort()
await expect(iterator.next()).resolves.toEqual({ done: true, value: undefined })
})
it.each(['success', 'domain-error', 'throw'] as const)(
'promotes a prepared follow observation in the background: %s',
async (outcome) => {
const ctx = new Context()
await ctx.plugin(SessionStore)
await ctx.plugin(AgentRegistry)
const sessionId = SessionId(`background-${outcome}`)
const header: SessionHeader = {
version: SESSION_FORMAT_VERSION, id: sessionId, createdAt: 1, cwd: '/workspace', isSeeded: false,
}
ctx.provide('sessionPersistence', testSessionPersistence(ctx, {
list: () => Promise.resolve([header]),
inspect: () => Promise.resolve({
meta: header,
inheritedEventCount: SessionLogOffset(0),
events: [],
}),
}) as never)
const controller = createSessionTestController(ctx, defaults)
const agents = (controller as unknown as { agents: ApiSessionAgentController }).agents
const apiError = vi.fn()
ctx.on('api-session/error', apiError)
const logError = vi.spyOn(ctx.logger, 'error').mockImplementation(() => {})
const live = { id: sessionId, session: { id: sessionId }, ctx, status: 'idle' } as unknown as Agent
const resolve = vi.spyOn(agents, 'resolveObservedAgent')
if (outcome === 'success') resolve.mockResolvedValue({ agent: live })
else if (outcome === 'domain-error') {
resolve.mockResolvedValue({
error: new RemoteError('gateway/internal', 'activation unavailable', {}),
})
} else {
resolve.mockRejectedValue(new Error('activation crashed'))
}
const abort = new AbortController()
const iterator = controller.follow({
address: { kind: 'session', sessionId },
}, abort.signal)[Symbol.asyncIterator]()
await expect(iterator.next()).resolves.toMatchObject({ value: { type: 'snapshot' } })
const waiting = iterator.next()
await vi.waitFor(() => { expect(resolve).toHaveBeenCalledOnce() })
if (outcome === 'domain-error') {
await vi.waitFor(() => {
expect(apiError).toHaveBeenCalledWith(sessionId, 'activation unavailable')
})
} else if (outcome === 'throw') {
await vi.waitFor(() => {
expect(logError).toHaveBeenCalledWith(expect.stringContaining('activation crashed'))
})
} else {
expect(apiError).not.toHaveBeenCalled()
}
abort.abort()
await expect(waiting).resolves.toMatchObject({ done: true })
await ctx.fiber.dispose()
},
)
it('waits for an admitted background promotion during teardown', async () => {
const ctx = new Context()
await ctx.plugin(SessionStore)
await ctx.plugin(AgentRegistry)
const sessionId = SessionId('background-disposal')
const header: SessionHeader = {
version: SESSION_FORMAT_VERSION, id: sessionId, createdAt: 1, cwd: '/workspace', isSeeded: false,
}
ctx.provide('sessionPersistence', testSessionPersistence(ctx, {
list: () => Promise.resolve([header]),
inspect: () => Promise.resolve({
meta: header,
inheritedEventCount: SessionLogOffset(0),
events: [],
}),
}) as never)
const controller = createSessionTestController(ctx, defaults)
const agents = (controller as unknown as { agents: ApiSessionAgentController }).agents
const started = Promise.withResolvers<undefined>()
const release = Promise.withResolvers<undefined>()
vi.spyOn(agents, 'resolveObservedAgent').mockImplementation(async () => {
started.resolve(undefined)
await release.promise
return {
agent: { id: sessionId, session: { id: sessionId }, ctx, status: 'idle' } as unknown as Agent,
}
})
const iterator = controller.follow({
address: { kind: 'session', sessionId },
}, new AbortController().signal)[Symbol.asyncIterator]()
await expect(iterator.next()).resolves.toMatchObject({ value: { type: 'snapshot' } })
const waiting = iterator.next()
await started.promise
let disposed = false
const disposal = ctx.fiber.dispose().then(() => { disposed = true })
await Promise.resolve()
expect(disposed).toBe(false)
release.resolve(undefined)
await disposal
await expect(waiting).resolves.toMatchObject({ done: true })
})
})
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