4565161c64
dispose() ended stdin and sent SIGTERM in the same tick, so the child's EOF-driven quiesce had no window to run. The real acp-agent has no SIGTERM handler in a normal session — it flushes persistence and stops child-owned work via the server bridge's connection-close path (conn.closed → per-agent dispose → final session/flush), driven by stdin EOF, NOT by a signal. A prompt response can resolve from a turn/end before that post-turn flush lands, so the child still owes durable work when dispose runs; a same-tick default SIGTERM terminated it mid-flush, orphaning child-owned bash and dropping the flush. dispose now waits for the child's natural exit after stdin EOF first, then escalates SIGTERM (grace), then SIGKILL — a three-tier ladder. Add an `exitsWithin` helper for the bounded waits. Regression coverage: a new mock mode (MOCK_FLUSH_ON_EOF) flushes a marker asynchronously on EOF then self-exits; the tier-1 test asserts the marker lands (proven RED on the same-tick-SIGTERM ordering — child killed mid-flush). MOCK_IGNORE_EOF covers the middle tier (ignores EOF, dies on default SIGTERM); the existing MOCK_TRAP_SIGTERM test covers the SIGKILL tier.
425 lines
19 KiB
TypeScript
425 lines
19 KiB
TypeScript
import { describe, expect, it } from 'vitest'
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import { Context } from 'cordis'
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import Loader from '@cordisjs/plugin-loader'
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import { existsSync, mkdtempSync, rmSync, writeFileSync } from 'node:fs'
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import { tmpdir } from 'node:os'
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import { join } from 'node:path'
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import { fileURLToPath } from 'node:url'
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import SubagentService from '@deepseek-ai/dsh-subagent'
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import type { Agent } from '@deepseek-ai/dsh-agent'
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import * as acp from '../src/index.ts'
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import { acpStopReason, acpContentText, buildChildEnv, SENSITIVE_ENV_PATTERN, startAcpRun, toAcpPrompt, type AcpRunSpec } from '../src/run.ts'
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/**
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* Keyless integration tests for the ACP subagent backend. Each spawns a REAL
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* subprocess — the scripted mock ACP server (tests/mock-acp-server.ts) — and
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* drives it through the REAL backend over real ACP JSON-RPC stdio, so the
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* connection setup, the client callbacks, the prompt round-trip, the stop-reason
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* mapping, cancellation, and quiescent disposal are all exercised end to end.
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* No model, no key.
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*/
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const mockServer = fileURLToPath(new URL('./mock-acp-server.ts', import.meta.url))
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const tsxLoader = fileURLToPath(import.meta.resolve('tsx'))
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const repoTsconfig = fileURLToPath(new URL('../../../../tsconfig.json', import.meta.url))
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/** A throwaway parent Agent — the ACP backend ignores it, but the seam requires one. */
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const fakeParent = { id: 'parent', session: { header: {} } } as unknown as Agent
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interface SetupEnv {
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/** Mock-server scripting env: MOCK_TEXT / MOCK_STOP / MOCK_HANG / MOCK_PERMISSION. */
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[key: string]: string
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}
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/**
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* Mount the ACP backend pointed at the mock server, scripted by `mockEnv`.
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* `permission` selects the backend's auto-answer policy.
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*/
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async function setup(mockEnv: SetupEnv = {}, permission: 'allow' | 'reject' = 'reject') {
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const ctx = new Context()
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await ctx.plugin(SubagentService)
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await ctx.plugin(acp, {
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providerName: 'acp',
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command: process.execPath,
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args: ['--import', tsxLoader, mockServer],
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permission,
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// The mock-server scripting vars must reach the child; TSX_TSCONFIG_PATH lets
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// tsx resolve @deepseek-ai/* from a child cwd outside the repo.
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env: { ...mockEnv, TSX_TSCONFIG_PATH: repoTsconfig },
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})
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return ctx
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}
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function text(blocks: { type: string; text?: string }[]): string {
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return blocks.filter(b => b.type === 'text').map(b => b.text).join('')
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}
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/**
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* Poll until `file` exists (the mock touches it once its prompt is in flight),
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* so a cancel test waits on a CONDITION rather than an arbitrary timeout — the
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* subprocess cold-start under tsx is variable, and a fixed sleep both flakes and
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* slows the suite. Fails loud if the child never signals readiness.
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*/
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async function waitForFile(file: string, timeoutMs = 5000): Promise<void> {
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const deadline = Date.now() + timeoutMs
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while (!existsSync(file)) {
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if (Date.now() > deadline) throw new Error(`mock child never became ready (${file})`)
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await new Promise(r => setTimeout(r, 10))
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}
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}
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describe('acpStopReason', () => {
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it('maps each ACP stop reason to the harness vocabulary', () => {
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expect(acpStopReason('end_turn')).toBe('completed')
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expect(acpStopReason('max_tokens')).toBe('max-tokens')
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expect(acpStopReason('refusal')).toBe('refusal')
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expect(acpStopReason('cancelled')).toBe('aborted')
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expect(acpStopReason('max_turn_requests')).toBe('error')
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})
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it('treats an unknown terminal reason as an error', () => {
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expect(acpStopReason('something-new' as never)).toBe('error')
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})
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})
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describe('acpContentText / toAcpPrompt', () => {
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it('extracts text from a text content block, empty for non-text', () => {
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expect(acpContentText({ type: 'text', text: 'hi' })).toBe('hi')
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// A non-text ACP content block (e.g. an image) contributes no text.
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expect(acpContentText({ type: 'image', data: 'x', mimeType: 'image/png' })).toBe('')
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})
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it('keeps text prompt blocks and drops non-text ones', () => {
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expect(toAcpPrompt([{ type: 'text', text: 'a' }])).toEqual([{ type: 'text', text: 'a' }])
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// A non-text harness block (e.g. reasoning) is dropped from the ACP prompt.
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expect(toAcpPrompt([{ type: 'text', text: 'a' }, { type: 'reasoning', text: 'think' }]))
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.toEqual([{ type: 'text', text: 'a' }])
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})
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})
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describe('buildChildEnv', () => {
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it('drops credential-shaped ambient vars but keeps the explicit extras', () => {
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process.env.DSH_ACP_TEST_SECRET_TOKEN = 'leak-me'
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try {
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const env = buildChildEnv({ DEEPSEEK_API_KEY: 'explicit' })
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// The credential-shaped ambient var is scrubbed.
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expect(env.DSH_ACP_TEST_SECRET_TOKEN).toBeUndefined()
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// The explicitly-supplied key survives (an opt-in for the child's creds).
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expect(env.DEEPSEEK_API_KEY).toBe('explicit')
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// A normal ambient var is forwarded.
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expect(SENSITIVE_ENV_PATTERN.test('PATH')).toBe(false)
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expect(env.PATH).toBe(process.env.PATH)
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} finally {
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delete process.env.DSH_ACP_TEST_SECRET_TOKEN
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}
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})
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})
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describe('dsh-subagent-acp', () => {
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it('drives a child process to completion and returns its streamed output', async () => {
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const ctx = await setup({ MOCK_TEXT: 'hello from acp child', MOCK_STOP: 'end_turn' })
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const run = ctx.subagents.start('acp', { prompt: [{ type: 'text', text: 'do X' }], parent: fakeParent })
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const result = await run.result
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expect(result.stopReason).toBe('completed')
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expect(text(result.output)).toBe('hello from acp child')
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await run.dispose()
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})
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it('maps a max_tokens stop reason', async () => {
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const ctx = await setup({ MOCK_TEXT: 'cut off', MOCK_STOP: 'max_tokens' })
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const run = ctx.subagents.start('acp', { prompt: [{ type: 'text', text: 'p' }], parent: fakeParent })
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const result = await run.result
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expect(result.stopReason).toBe('max-tokens')
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await run.dispose()
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})
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it('maps a refusal stop reason', async () => {
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const ctx = await setup({ MOCK_TEXT: '', MOCK_STOP: 'refusal' })
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const run = ctx.subagents.start('acp', { prompt: [{ type: 'text', text: 'p' }], parent: fakeParent })
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const result = await run.result
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expect(result.stopReason).toBe('refusal')
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await run.dispose()
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})
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it('cancelling a running child settles aborted (session/cancel via run.cancel)', async () => {
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const tmp = mkdtempSync(join(tmpdir(), 'acp-cancel-'))
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const readyFile = join(tmp, 'ready')
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try {
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const ctx = await setup({ MOCK_TEXT: 'partial', MOCK_HANG: '1', MOCK_READY_FILE: readyFile })
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const run = ctx.subagents.start('acp', { prompt: [{ type: 'text', text: 'p' }], parent: fakeParent })
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// Wait until the child's prompt is in flight (condition, not a sleep),
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// then cancel — so we exercise the mid-run session/cancel path.
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await waitForFile(readyFile)
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run.cancel('test')
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const result = await run.result
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expect(result.stopReason).toBe('aborted')
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await run.dispose()
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} finally {
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rmSync(tmp, { recursive: true, force: true })
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}
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})
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it('settles aborted WITHOUT spawning the child when the signal is already aborted', async () => {
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// A pre-aborted request must not even launch the configured binary. Point
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// the command at one that would create a sentinel file if it ever ran, and
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// assert the sentinel never appears.
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const tmp = mkdtempSync(join(tmpdir(), 'acp-preabort-'))
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const sentinel = join(tmp, 'spawned')
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try {
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const controller = new AbortController()
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controller.abort()
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const run = startAcpRun(
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{ prompt: [{ type: 'text', text: 'p' }], parent: fakeParent, signal: controller.signal },
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// `touch <sentinel>` — runs only if the process is actually spawned.
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{ command: 'touch', args: [sentinel], cwd: tmp, permission: 'reject', env: {} },
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)
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const result = await run.result
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expect(result.stopReason).toBe('aborted')
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expect(result.output).toEqual([])
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// cancel/dispose on the inert run are safe no-ops.
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run.cancel('noop')
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await run.dispose()
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// The binary was never launched — no sentinel.
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expect(existsSync(sentinel)).toBe(false)
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} finally {
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rmSync(tmp, { recursive: true, force: true })
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}
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})
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it('dispose escalates SIGTERM → SIGKILL for a child that traps SIGTERM (bounded quiescence)', async () => {
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// The child traps SIGTERM and keeps its event loop alive, so a graceful
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// term alone would hang dispose forever. With a short grace, dispose must
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// escalate to SIGKILL and return once the process is actually gone.
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const tmp = mkdtempSync(join(tmpdir(), 'acp-trap-'))
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const ready = join(tmp, 'trap-armed')
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try {
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const spec: AcpRunSpec = {
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command: process.execPath,
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args: ['--import', tsxLoader, mockServer],
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cwd: process.cwd(),
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permission: 'reject',
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env: { MOCK_TRAP_SIGTERM: '1', MOCK_TEXT: 'x', MOCK_READY_FILE: ready, TSX_TSCONFIG_PATH: repoTsconfig },
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disposeGraceMs: 150,
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}
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const run = startAcpRun({ prompt: [{ type: 'text', text: 'p' }], parent: fakeParent }, spec)
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// Wait until the child has BOOTED AND ARMED THE TRAP (a condition, not a
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// sleep) — otherwise SIGTERM races the trap install and the default handler
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// terminates the child, never exercising the escalation.
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await waitForFile(ready)
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// Don't await result (the child hangs). Dispose must still return promptly
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// via the SIGKILL escalation — bound it so a regression (no escalation)
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// fails loud instead of hanging the suite.
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await expect(Promise.race([
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run.dispose(),
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new Promise((_r, reject) => { setTimeout(() => { reject(new Error('dispose did not return — no SIGKILL escalation')) }, 4000) }),
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])).resolves.toBeUndefined()
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} finally {
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rmSync(tmp, { recursive: true, force: true })
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}
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})
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it('dispose gives the child an EOF window to quiesce before escalating (graceful flush)', async () => {
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// The real acp-agent flushes ASYNCHRONOUSLY on stdin EOF (its bridge tears
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// down on connection close, NOT on a signal) — and it has no SIGTERM handler.
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// The mock models that: on stdin 'end' it takes a beat to "flush", touches a
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// marker, and exits on its own. dispose() must end stdin and WAIT for that
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// natural exit before sending SIGTERM; a same-tick SIGTERM default-kills the
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// child mid-flush and the marker never appears.
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const tmp = mkdtempSync(join(tmpdir(), 'acp-eof-'))
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const ready = join(tmp, 'ready')
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const flushed = join(tmp, 'flushed')
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try {
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const spec: AcpRunSpec = {
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command: process.execPath,
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args: ['--import', tsxLoader, mockServer],
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cwd: process.cwd(),
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permission: 'reject',
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// MOCK_HANG so the prompt never resolves on its own — we tear down a live
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// child. MOCK_FLUSH_ON_EOF is the marker the child writes iff its EOF
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// quiesce was allowed to finish.
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env: { MOCK_HANG: '1', MOCK_TEXT: 'x', MOCK_READY_FILE: ready, MOCK_FLUSH_ON_EOF: flushed, TSX_TSCONFIG_PATH: repoTsconfig },
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}
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const run = startAcpRun({ prompt: [{ type: 'text', text: 'p' }], parent: fakeParent }, spec)
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// Wait until the child is fully booted with its prompt in flight (its ACP
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// stdin reader is attached), so dispose's stdin EOF reaches a live child.
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await waitForFile(ready)
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await run.dispose()
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// dispose returned via the natural-exit tier — the EOF-driven flush landed.
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expect(existsSync(flushed)).toBe(true)
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} finally {
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rmSync(tmp, { recursive: true, force: true })
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}
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})
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it('escalates to SIGTERM for a child that ignores EOF but is not SIGTERM-trapping', async () => {
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// A child that keeps its loop alive past stdin EOF (so the graceful window
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// times out) but leaves SIGTERM at the default handler must die on the
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// SIGTERM tier — dispose returns there, never reaching the SIGKILL tier.
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const tmp = mkdtempSync(join(tmpdir(), 'acp-ignore-eof-'))
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const ready = join(tmp, 'ready')
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try {
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const spec: AcpRunSpec = {
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command: process.execPath,
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args: ['--import', tsxLoader, mockServer],
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cwd: process.cwd(),
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permission: 'reject',
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env: { MOCK_HANG: '1', MOCK_IGNORE_EOF: '1', MOCK_TEXT: 'x', MOCK_READY_FILE: ready, TSX_TSCONFIG_PATH: repoTsconfig },
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disposeGraceMs: 150,
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}
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const run = startAcpRun({ prompt: [{ type: 'text', text: 'p' }], parent: fakeParent }, spec)
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await waitForFile(ready)
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// Bound it: a regression (no SIGTERM tier, only EOF + SIGKILL) would still
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// pass, but a hang would fail loud rather than stall the suite.
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await expect(Promise.race([
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run.dispose(),
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new Promise((_r, reject) => { setTimeout(() => { reject(new Error('dispose did not return')) }, 4000) }),
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])).resolves.toBeUndefined()
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} finally {
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rmSync(tmp, { recursive: true, force: true })
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}
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})
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it('honors a cancel that races AHEAD of newSession (no session id yet) without running the prompt', async () => {
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// Gate the child at newSession: it signals `ready` and blocks until `go`.
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// We cancel WHILE newSession is pending (sessionId still undefined, so the
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// backend cannot send session/cancel) — the `cancelled` flag alone must
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// settle the run aborted after newSession resolves, never issuing the prompt.
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const tmp = mkdtempSync(join(tmpdir(), 'acp-early-'))
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const ready = join(tmp, 'ready')
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const go = join(tmp, 'go')
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try {
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const ctx = await setup({ MOCK_NEWSESSION_READY: ready, MOCK_NEWSESSION_GO: go, MOCK_TEXT: 'should not run' })
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const run = ctx.subagents.start('acp', { prompt: [{ type: 'text', text: 'p' }], parent: fakeParent })
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await waitForFile(ready) // newSession is now in flight, sessionId undefined
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run.cancel('early') // sets cancelled; cannot send session/cancel yet
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writeFileSync(go, 'go') // let newSession resolve
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const result = await run.result
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expect(result.stopReason).toBe('aborted')
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expect(result.output).toEqual([])
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await run.dispose()
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} finally {
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rmSync(tmp, { recursive: true, force: true })
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}
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})
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it('bridges the request signal to a session/cancel mid-run', async () => {
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const tmp = mkdtempSync(join(tmpdir(), 'acp-signal-'))
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const readyFile = join(tmp, 'ready')
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try {
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const controller = new AbortController()
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const ctx = await setup({ MOCK_TEXT: 'partial', MOCK_HANG: '1', MOCK_READY_FILE: readyFile })
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const run = ctx.subagents.start('acp', { prompt: [{ type: 'text', text: 'p' }], parent: fakeParent, signal: controller.signal })
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await waitForFile(readyFile)
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controller.abort()
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const result = await run.result
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expect(result.stopReason).toBe('aborted')
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await run.dispose()
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} finally {
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rmSync(tmp, { recursive: true, force: true })
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}
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})
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it('auto-rejects a permission prompt by default (child settles cancelled→aborted)', async () => {
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const ctx = await setup({ MOCK_TEXT: 'x', MOCK_PERMISSION: '1' }, 'reject')
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const run = ctx.subagents.start('acp', { prompt: [{ type: 'text', text: 'p' }], parent: fakeParent })
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const result = await run.result
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// The child asked permission, the backend rejected, the child returned cancelled.
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expect(result.stopReason).toBe('aborted')
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await run.dispose()
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})
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it('auto-approves a permission prompt under the allow policy', async () => {
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const ctx = await setup({ MOCK_TEXT: 'approved answer', MOCK_PERMISSION: '1', MOCK_STOP: 'end_turn' }, 'allow')
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const run = ctx.subagents.start('acp', { prompt: [{ type: 'text', text: 'p' }], parent: fakeParent })
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const result = await run.result
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expect(result.stopReason).toBe('completed')
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expect(text(result.output)).toBe('approved answer')
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await run.dispose()
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})
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it('falls back to cancelled under the allow policy when the child offers no allow option', async () => {
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// The child asks permission but offers ONLY reject-shaped options, so an
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// allow-policy client finds nothing to select and must answer cancelled.
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const ctx = await setup({ MOCK_PERMISSION: '1', MOCK_NO_ALLOW: '1' }, 'allow')
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const run = ctx.subagents.start('acp', { prompt: [{ type: 'text', text: 'p' }], parent: fakeParent })
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const result = await run.result
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expect(result.stopReason).toBe('aborted')
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await run.dispose()
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})
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it('consumes a non-message update (a thought) without adding it to the output', async () => {
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// The child streams an agent_thought_chunk before its answer; the backend
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// must consume it but NOT include it in the result output.
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const ctx = await setup({ MOCK_THOUGHT: '1', MOCK_TEXT: 'final answer', MOCK_STOP: 'end_turn' })
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const run = ctx.subagents.start('acp', { prompt: [{ type: 'text', text: 'p' }], parent: fakeParent })
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const result = await run.result
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expect(result.stopReason).toBe('completed')
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// Only the message text, NOT the thought.
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expect(text(result.output)).toBe('final answer')
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await run.dispose()
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})
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it('resolves error (not reject) when the spawn command does not exist', async () => {
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const ctx = new Context()
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await ctx.plugin(SubagentService)
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await ctx.plugin(acp, {
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providerName: 'acp',
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command: '/nonexistent/acp-agent-binary',
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args: [],
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permission: 'reject',
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env: {},
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})
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const run = ctx.subagents.start('acp', { prompt: [{ type: 'text', text: 'p' }], parent: fakeParent })
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const result = await run.result
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// The seam contract: a child-level failure resolves error, never rejects.
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expect(result.stopReason).toBe('error')
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await run.dispose()
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})
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it('settles aborted when the child crashes (tears the pipe) AFTER a cancel', async () => {
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// The child hangs, we cancel, and instead of answering the child exits hard
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// — the pending prompt RPC rejects. With a cancel already requested, the
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// backend's catch path must settle `aborted` (the failure is the cancel
|
|
// surfacing as a torn pipe), not `error`.
|
|
const tmp = mkdtempSync(join(tmpdir(), 'acp-crash-'))
|
|
const ready = join(tmp, 'ready')
|
|
try {
|
|
const ctx = await setup({ MOCK_TEXT: 'partial', MOCK_HANG: '1', MOCK_CRASH_ON_CANCEL: '1', MOCK_READY_FILE: ready })
|
|
const run = ctx.subagents.start('acp', { prompt: [{ type: 'text', text: 'p' }], parent: fakeParent })
|
|
await waitForFile(ready)
|
|
run.cancel('crash it')
|
|
const result = await run.result
|
|
expect(result.stopReason).toBe('aborted')
|
|
await run.dispose()
|
|
} finally {
|
|
rmSync(tmp, { recursive: true, force: true })
|
|
}
|
|
})
|
|
|
|
it('advertises no start-time capabilities (out-of-process child)', async () => {
|
|
const ctx = await setup()
|
|
const provider = ctx.subagents.getProvider('acp')!
|
|
expect(provider.capabilities).toEqual({ outputSchema: false, depthLimit: false, toolFilter: false })
|
|
})
|
|
|
|
it('unregisters the provider when its fiber is disposed (HMR safety)', async () => {
|
|
const ctx = new Context()
|
|
await ctx.plugin(SubagentService)
|
|
const fiber = await ctx.plugin(acp, { providerName: 'acp', command: 'x', args: [], permission: 'reject', env: {} })
|
|
expect(ctx.subagents.list()).toEqual(['acp'])
|
|
await fiber.dispose()
|
|
expect(ctx.subagents.list()).toEqual([])
|
|
})
|
|
|
|
it('has the namespace-plugin export shape (no stray default)', () => {
|
|
expect('default' in acp).toBe(false)
|
|
expect(acp.name).toBe('subagent-acp')
|
|
expect(acp.inject).toEqual(['subagents'])
|
|
const loader = Object.create(Loader.prototype) as Loader
|
|
const unwrapped = loader.unwrapExports(acp) as Record<string, unknown>
|
|
expect(unwrapped).toBe(acp)
|
|
expect(unwrapped.name).toBe('subagent-acp')
|
|
expect(typeof unwrapped.apply).toBe('function')
|
|
})
|
|
})
|