orca/src/cli/orchestration-session-caller-cli.test.ts

/**
 * A command that runs inside a structured agent session is that session: the injected
 * `ORCA_AGENT_SESSION_ID` names the caller, and nothing resolves or guesses a terminal for it.
 *
 * One rule for every verb that names a caller: a caller flag may restate the session, but a flag
 * naming anyone else is refused — never silently dropped, never allowed to win. A session address
 * the CLI cannot place is left to the host, whose `/clear` lineage decides.
 * The #21097 accident was a chat that named a sibling's terminal and consumed that sibling's mail.
 *
 * The session env here is the hardest case, a chat that inherited a pane's `ORCA_TERMINAL_HANDLE`
 * and `ORCA_PANE_KEY` (an Orca launched from an Orca terminal), and the implicit-terminal guess has
 * a sibling to find.
 */

import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'

const callMock = vi.hoisted(() => vi.fn())
const getTerminalHandleMock = vi.hoisted(() => vi.fn())

vi.mock('./format', () => ({ printResult: vi.fn() }))
vi.mock('./selectors', () => ({ getTerminalHandle: getTerminalHandleMock }))

import { ORCHESTRATION_HANDLERS } from './handlers/orchestration'
import { findCommandSpec } from './args'
import { COMMAND_SPECS } from './specs'
import { refuseConflictingSessionCallerFlags } from './session-caller-flags'
import { createOrchestrationCompatibilityEnvelope } from './runtime/orchestration-compatibility-envelope'
import { getDefaultUserDataPath } from './runtime/metadata'
import { formatCliError, reportCliError } from './cli-error'
import { RuntimeRpcFailureError } from './runtime/types'

const SESSION = 'f7a1c0de-1111-4222-8333-444455556666'
/** The session a `/clear` continued as SESSION: the chat's orchestration address stays this one's. */
const ROOT = '0b5e2d7c-9a41-4c3e-8f62-7d1a3e5b9c08'
const IDENTITY_ENV = [
  'ORCA_AGENT_SESSION_ID',
  'ORCA_TERMINAL_HANDLE',
  'ORCA_PANE_KEY',
  'ORCA_STRUCTURED_SESSION'
] as const
const originalEnv = Object.fromEntries(IDENTITY_ENV.map((name) => [name, process.env[name]]))

/** Enough of every receipt shape that each handler finishes after its RPC. */
const RESULT = {
  result: {
    run: { id: 'run_1', objective: 'o', consumer_generation: 1 },
    runs: [],
    nextCursor: null,
    messages: [],
    count: 0,
    message: { id: 'msg_1' },
    lifecycle: { action: 'completed' },
    dispatch: { id: 'dispatch_1', task_id: 'task_1', status: 'dispatched' },
    gate: { id: 'gate_1', task_id: 'task_1', status: 'pending', resolution: 'r' },
    gates: [],
    task: { id: 'task_1', status: 'pending' },
    tasks: [],
    answer: 'yes',
    messageId: 'msg_1',
    threadId: 'thread_1',
    timedOut: false,
    state: 'ready',
    runId: 'run_1',
    taskId: 'task_1',
    dispatchId: 'dispatch_1',
    effects: [],
    residualResources: [],
    workers: [],
    counts: {}
  }
}

type Verb = {
  command: string
  flags: Record<string, string | true>
  /** The flag that names the caller, when the verb has one. */
  callerFlag?: 'from' | 'terminal'
  method: string
  callerParam: 'from' | 'terminal' | 'callerTerminalHandle'
}

/** Every verb whose request names its caller: the host's caller-param map, from the CLI side.
 *  `dispatch-show` is not one: its --from only fills preview text, so it is pinned on its own. */
const CALLER_VERBS: Verb[] = [
  {
    command: 'run-create',
    flags: { objective: 'o' },
    callerFlag: 'from',
    method: 'runCreate',
    callerParam: 'from'
  },
  {
    command: 'run-use',
    flags: { id: 'run_1' },
    callerFlag: 'from',
    method: 'runUse',
    callerParam: 'from'
  },
  {
    command: 'run-current',
    flags: {},
    callerFlag: 'from',
    method: 'runCurrent',
    callerParam: 'from'
  },
  { command: 'check', flags: {}, callerFlag: 'terminal', method: 'check', callerParam: 'terminal' },
  {
    command: 'send',
    flags: { to: 'term_worker', subject: 's', body: 'b' },
    callerFlag: 'from',
    method: 'send',
    callerParam: 'from'
  },
  {
    command: 'reply',
    flags: { id: 'msg_1', body: 'b' },
    callerFlag: 'from',
    method: 'reply',
    callerParam: 'from'
  },
  {
    command: 'ask',
    flags: { to: 'term_worker', question: 'q' },
    callerFlag: 'from',
    method: 'ask',
    callerParam: 'from'
  },
  {
    command: 'dispatch',
    flags: { task: 'task_1', to: 'term_worker' },
    callerFlag: 'from',
    method: 'dispatch',
    callerParam: 'from'
  },
  {
    command: 'gate-create',
    flags: { task: 'task_1', question: 'q' },
    callerFlag: 'from',
    method: 'gateCreate',
    callerParam: 'from'
  },
  {
    command: 'gate-resolve',
    flags: { id: 'gate_1', resolution: 'r' },
    callerFlag: 'from',
    method: 'gateResolve',
    callerParam: 'from'
  },
  { command: 'gate-list', flags: {}, callerFlag: 'from', method: 'gateList', callerParam: 'from' },
  {
    command: 'task-create',
    flags: { spec: 's' },
    callerFlag: 'from',
    method: 'taskCreate',
    callerParam: 'callerTerminalHandle'
  },
  {
    command: 'task-list',
    flags: {},
    callerFlag: 'from',
    method: 'taskList',
    callerParam: 'callerTerminalHandle'
  },
  {
    command: 'task-update',
    flags: { id: 'task_1', status: 'completed' },
    callerFlag: 'from',
    method: 'taskUpdate',
    callerParam: 'callerTerminalHandle'
  },
  {
    command: 'worker-start',
    flags: { spec: 's' },
    callerFlag: 'from',
    method: 'workerStart',
    callerParam: 'from'
  },
  // No caller flag: its spec takes none. It asks runCurrent for the caller's Run.
  { command: 'worker-list', flags: {}, method: 'runCurrent', callerParam: 'from' }
]

/** Enough flags for any verb to get past its own validation to identity resolution. */
const EVERY_REQUIRED_FLAG = {
  objective: 'o',
  id: 'id_1',
  task: 'task_1',
  spec: 's',
  question: 'q',
  resolution: 'r',
  subject: 's',
  body: 'b',
  to: 'term_worker',
  status: 'completed',
  preamble: true,
  request: 'req_1'
} as const

function flagMap(flags: Record<string, string | true>): Map<string, string | boolean> {
  return new Map(Object.entries(flags))
}

/** What `main()` does between parsing and dispatch: the spec-driven caller check, then the handler. */
async function invoke(
  command: string,
  flags: Map<string, string | boolean>,
  json = true
): Promise<void> {
  const handler = ORCHESTRATION_HANDLERS[`orchestration ${command}`]
  if (!handler) {
    throw new Error(`no handler for ${command}`)
  }
  refuseConflictingSessionCallerFlags(
    findCommandSpec(COMMAND_SPECS, ['orchestration', command]),
    flags
  )
  await handler({
    flags,
    // oxlint-disable-next-line typescript/consistent-type-assertions -- SAFETY: these handlers read only `call`; RuntimeClient is a class, so a structural double cannot satisfy it without the cast.
    client: { call: callMock } as never,
    cwd: '/tmp/repo',
    json
  })
}

function isParams(value: unknown): value is Record<string, unknown> {
  return typeof value === 'object' && value !== null && !Array.isArray(value)
}

function callsTo(method: string): Record<string, unknown>[] {
  return callMock.mock.calls
    .filter(([name]) => name === `orchestration.${method}`)
    .map(([, params]) => (isParams(params) ? params : {}))
}

function setEnv(env: Partial<Record<(typeof IDENTITY_ENV)[number], string>>): void {
  for (const name of IDENTITY_ENV) {
    const value = env[name]
    if (value === undefined) {
      delete process.env[name]
    } else {
      process.env[name] = value
    }
  }
}

/** A chat with its id, plus a pane identity it inherited from the Orca that launched it. */
function asSessionWithInheritedPane(): void {
  setEnv({
    ORCA_AGENT_SESSION_ID: SESSION,
    ORCA_TERMINAL_HANDLE: 'term_inherited_pane',
    ORCA_PANE_KEY: 'tab_inherited:11111111-1111-4111-8111-111111111111'
  })
}

beforeEach(() => {
  callMock.mockReset().mockResolvedValue(RESULT)
  getTerminalHandleMock.mockReset().mockResolvedValue('term_sibling')
  vi.spyOn(console, 'log').mockImplementation(() => {})
  vi.spyOn(console, 'error').mockImplementation(() => {})
})

afterEach(() => {
  vi.restoreAllMocks()
  setEnv(originalEnv)
  process.exitCode = undefined
})

describe.each(CALLER_VERBS)('orchestration $command run as an agent session', (verb) => {
  beforeEach(asSessionWithInheritedPane)

  it('acts as the session: no terminal is resolved, guessed or sent', async () => {
    await invoke(verb.command, flagMap(verb.flags))

    const [params] = callsTo(verb.method)
    expect(params, 'the verb reached its method').toBeDefined()
    expect(params?.[verb.callerParam]).toBeUndefined()
    // An inherited pane is not the session's identity.
    expect(params?.terminalPaneKey).toBeUndefined()
    expect(params?.senderPaneKey).toBeUndefined()
    expect(getTerminalHandleMock).not.toHaveBeenCalled()
    expect(callMock.mock.calls.map(([name]) => name)).not.toEqual(
      expect.arrayContaining([expect.stringMatching(/^terminal\./)])
    )
  })

  it.runIf(verb.callerFlag !== undefined)(
    'refuses a caller flag naming another caller, before any request',
    async () => {
      const flags = flagMap({ ...verb.flags, [verb.callerFlag ?? 'from']: 'term_sibling' })

      await expect(invoke(verb.command, flags)).rejects.toMatchObject({
        code: 'consumer_fenced',
        message: expect.stringContaining(`agent session ${SESSION}`)
      })
      expect(callMock).not.toHaveBeenCalled()
      expect(getTerminalHandleMock).not.toHaveBeenCalled()
    }
  )

  it.runIf(verb.callerFlag !== undefined)(
    'refuses an inherited pane handle too: the session, not the pane, is the caller',
    async () => {
      const flags = flagMap({ ...verb.flags, [verb.callerFlag ?? 'from']: 'term_inherited_pane' })

      await expect(invoke(verb.command, flags)).rejects.toMatchObject({ code: 'consumer_fenced' })
      expect(callMock).not.toHaveBeenCalled()
    }
  )

  it.runIf(verb.callerFlag !== undefined).each([`session:${SESSION}`, SESSION])(
    'accepts a caller flag that restates the session (%s)',
    async (restated) => {
      await invoke(verb.command, flagMap({ ...verb.flags, [verb.callerFlag ?? 'from']: restated }))

      const [params] = callsTo(verb.method)
      expect(params, 'the verb reached its method').toBeDefined()
      expect(params?.[verb.callerParam]).toBeUndefined()
    }
  )
})

describe.each(CALLER_VERBS.filter((verb) => verb.callerFlag !== undefined))(
  'orchestration $command run by a /clear-ed chat',
  (verb) => {
    beforeEach(asSessionWithInheritedPane)

    it('sends the address it had before the clear for the host to place, instead of refusing it', async () => {
      // The chat's address is its lineage root's, which only the host's session records know.
      const flags = flagMap({ ...verb.flags, [verb.callerFlag ?? 'from']: `session:${ROOT}` })
      await invoke(verb.command, flags)

      const [params] = callsTo(verb.method)
      expect(params?.[verb.callerParam]).toBe(`session:${ROOT}`)
      expect(params?.terminalPaneKey).toBeUndefined()
      expect(params?.senderPaneKey).toBeUndefined()
      expect(getTerminalHandleMock).not.toHaveBeenCalled()
    })
  }
)

describe.each([
  { command: 'gate-list', method: 'gateList', callerParam: 'from' },
  { command: 'task-list', method: 'taskList', callerParam: 'callerTerminalHandle' }
])('orchestration $command --run run as an agent session', ({ command, method, callerParam }) => {
  beforeEach(asSessionWithInheritedPane)

  it('needs no caller, but refuses a --from naming another caller, before any request', async () => {
    await invoke(command, flagMap({ run: 'run_1' }))
    expect(callsTo(method)[0]).toMatchObject({ run: 'run_1' })
    expect(callsTo(method)[0]?.[callerParam]).toBeUndefined()

    callMock.mockClear()
    await expect(
      invoke(command, flagMap({ run: 'run_1', from: 'term_sibling' }))
    ).rejects.toMatchObject({ code: 'consumer_fenced' })
    expect(callMock).not.toHaveBeenCalled()
  })

  it('accepts a --from that restates the session', async () => {
    await invoke(command, flagMap({ run: 'run_1', from: `session:${SESSION}` }))
    expect(callsTo(method)[0]?.[callerParam]).toBeUndefined()
  })

  it.each([`session:${ROOT}`, 'session:9d4c1b2a-3e5f-4a6b-8c7d-0e1f2a3b4c5d'])(
    'sends a session address it cannot place (%s) for the host to check, never dropping it',
    async (declared) => {
      // A /clear-ed chat's root is accepted by the host; anyone else is refused there, before any
      // effect. Dropped here, a conflicting caller would pass unchecked.
      await invoke(command, flagMap({ run: 'run_1', from: declared }))
      expect(callsTo(method)[0]).toMatchObject({ run: 'run_1', [callerParam]: declared })
    }
  )
})

describe('the identity a session presents', () => {
  it("lets a structured worker restate its own minted handle, and nobody else's", async () => {
    setEnv({ ORCA_AGENT_SESSION_ID: SESSION, ORCA_TERMINAL_HANDLE: 'structworker_self' })

    await invoke('send', flagMap({ from: 'structworker_self', to: 'run:run_1', subject: 's' }))
    expect(callsTo('send')[0]?.from).toBeUndefined()

    callMock.mockClear()
    await expect(
      invoke('send', flagMap({ from: 'structworker_other', to: 'run:run_1', subject: 's' }))
    ).rejects.toMatchObject({ code: 'consumer_fenced' })
    expect(callMock).not.toHaveBeenCalled()
  })

  it("sends a structured worker's lifecycle report as the session, not refused as identity-less", async () => {
    setEnv({ ORCA_AGENT_SESSION_ID: SESSION })

    await invoke(
      'send',
      flagMap({ to: 'run:run_1', subject: 'done', type: 'worker_done', outcome: 'succeeded' })
    )

    expect(callsTo('send')[0]).toMatchObject({ type: 'worker_done' })
    expect(callsTo('send')[0]?.from).toBeUndefined()
  })

  it('never treats a session that has an id as identity-less, even beside the old marker', async () => {
    setEnv({ ORCA_AGENT_SESSION_ID: SESSION, ORCA_STRUCTURED_SESSION: '1' })

    await invoke('check', flagMap({}))

    expect(callsTo('check')).toHaveLength(1)
    expect(getTerminalHandleMock).not.toHaveBeenCalled()
  })

  it('keeps the identity-less refusal, without --from advice, for a child that has no id', async () => {
    setEnv({ ORCA_STRUCTURED_SESSION: '1' })

    await expect(invoke('reply', flagMap({ id: 'msg_1', body: 'b' }))).rejects.toMatchObject({
      code: 'no_active_sender_terminal',
      message: expect.not.stringContaining('Pass --from')
    })
    expect(getTerminalHandleMock).not.toHaveBeenCalled()
    expect(callMock).not.toHaveBeenCalled()
  })

  it('leaves a terminal agent exactly as it was: its own handle is the caller', async () => {
    setEnv({ ORCA_TERMINAL_HANDLE: 'term_pty', ORCA_PANE_KEY: 'tab_pty:1:2' })
    callMock.mockImplementation(async (name: string) =>
      name === 'terminal.resolveIdentity' ? { result: { identity: { live: true } } } : RESULT
    )

    await invoke('run-create', flagMap({ objective: 'o' }))
    await invoke('check', flagMap({}))

    expect(callsTo('runCreate')[0]?.from).toBe('term_pty')
    expect(callsTo('check')[0]).toMatchObject({
      terminal: 'term_pty',
      terminalPaneKey: 'tab_pty:1:2'
    })
  })

  it('previews a dispatch with the coordinator address the real dispatch would write', async () => {
    const preview = async (flags: Record<string, string | true>) => {
      callMock.mockClear()
      await invoke('dispatch-show', flagMap({ task: 'task_1', preamble: true, ...flags }))
      return callsTo('dispatchShow')[0]?.from
    }
    asSessionWithInheritedPane()
    expect(await preview({})).toBe(`session:${SESSION}`)
    // Not a caller flag: it names the text to preview, so it is never fenced.
    expect(await preview({ from: 'term_sibling' })).toBe('term_sibling')
    setEnv({ ORCA_AGENT_SESSION_ID: SESSION, ORCA_TERMINAL_HANDLE: 'structworker_self' })
    expect(await preview({})).toBe('structworker_self')
    expect(getTerminalHandleMock).not.toHaveBeenCalled()
  })

  it('resumes a timed-out ask as the session, without naming a terminal', async () => {
    asSessionWithInheritedPane()
    callMock.mockResolvedValue({ result: { ...RESULT.result, answer: null, timedOut: true } })
    const errors = vi.mocked(console.error)

    await invoke('ask', flagMap({ to: 'term_worker', question: 'q' }), false)

    const advice = errors.mock.calls.map(([line]) => String(line)).join('\n')
    expect(advice).toContain('--resume msg_1')
    expect(advice).not.toContain('--from')
  })
})

describe('a host refusal of the session', () => {
  const WORKER_GONE = new RuntimeRpcFailureError({
    id: 'rpc_1',
    ok: false,
    error: {
      code: 'session_caller_not_live',
      message: `Agent session ${SESSION} is a structured worker whose worker identity this host no longer has, so it cannot act in orchestration. No effects were applied.`,
      data: { effectsApplied: false }
    },
    _meta: { runtimeId: 'runtime_1' }
  })

  it.each(['check', 'run-current', 'worker-list'])(
    'surfaces from %s verbatim, never widened, retried or turned into a terminal guess',
    async (command) => {
      asSessionWithInheritedPane()
      callMock.mockRejectedValue(WORKER_GONE)

      await expect(invoke(command, flagMap({}))).rejects.toBe(WORKER_GONE)
      expect(getTerminalHandleMock).not.toHaveBeenCalled()
      expect(formatCliError(WORKER_GONE)).toBe(WORKER_GONE.message)
    }
  )

  it('keeps the Orca id a provider-id refusal names, for a JSON reader to branch on', () => {
    const providerId = new RuntimeRpcFailureError({
      id: 'rpc_1',
      ok: false,
      error: {
        code: 'session_caller_provider_id',
        message: 'provider id',
        data: { effectsApplied: false, orcaSessionId: SESSION }
      },
      _meta: { runtimeId: 'runtime_1' }
    })
    const printed: string[] = []
    vi.mocked(console.log).mockImplementation((line: string) => {
      printed.push(line)
    })

    reportCliError(providerId, true)

    expect(JSON.parse(printed.join('\n'))).toMatchObject({
      ok: false,
      error: { code: 'session_caller_provider_id', data: { orcaSessionId: SESSION } }
    })
  })
})

describe('the orchestration envelope', () => {
  it('carries the injected id beside whatever terminal evidence the process also has', () => {
    const envelope = createOrchestrationCompatibilityEnvelope({
      ORCA_AGENT_SESSION_ID: ` ${SESSION} `,
      ORCA_TERMINAL_HANDLE: 'term_inherited_pane'
    })

    expect(envelope.orchestrationCompatibilityEvidence).toEqual({
      terminalHandle: 'term_inherited_pane',
      agentSessionId: SESSION
    })
  })

  it('binds whichever current Orca CLI the agent reached, not only the one the session names', () => {
    // A login shell can put another install's `orca` first, and the packaged Windows launcher
    // rewrites ORCA_CLI_COMMAND in its own process. Neither matters: the id rides the envelope
    // and the pinned instance is the one dialed.
    vi.stubEnv('ORCA_USER_DATA_PATH', '/data/session-orca')
    try {
      const envelope = createOrchestrationCompatibilityEnvelope({
        ORCA_AGENT_SESSION_ID: SESSION,
        ORCA_CLI_COMMAND: 'orca',
        ORCA_WINDOWS_PACKAGED_CLI_LAUNCHER: '1',
        ORCA_USER_DATA_PATH: '/data/session-orca'
      })

      expect(envelope.orchestrationCompatibilityEvidence).toEqual({ agentSessionId: SESSION })
      expect(getDefaultUserDataPath('linux', '/home/u')).toBe('/data/session-orca')
    } finally {
      vi.unstubAllEnvs()
    }
  })

  it('claims no session without an injected id', () => {
    expect(
      createOrchestrationCompatibilityEnvelope({ ORCA_AGENT_SESSION_ID: '  ' })
        .orchestrationCompatibilityEvidence
    ).toBeUndefined()
  })

  it('keeps a WSL stamp beside the id, so the host can refuse the cross-host claim', () => {
    const envelope = createOrchestrationCompatibilityEnvelope({
      ORCA_AGENT_SESSION_ID: SESSION,
      ORCA_ORCHESTRATION_COMPATIBILITY_HOST_KIND: 'wsl',
      ORCA_ORCHESTRATION_COMPATIBILITY_HOST_ID: 'local',
      ORCA_ORCHESTRATION_COMPATIBILITY_HOST_INCARNATION: 'Ubuntu'
    })

    expect(envelope.orchestrationCompatibilityEvidence).toEqual({
      agentSessionId: SESSION,
      host: { kind: 'wsl', hostId: 'local', distro: 'Ubuntu' }
    })
  })
})

describe('which flag names the caller, declared on every spec', () => {
  const ORCHESTRATION_SPECS = COMMAND_SPECS.filter((spec) => spec.path[0] === 'orchestration')

  it('classifies every --from and --terminal an orchestration verb accepts', () => {
    // A new verb cannot take either flag without saying whether it names the caller, so the entry
    // check covers it by construction instead of each handler remembering to refuse.
    const unclassified = ORCHESTRATION_SPECS.flatMap((spec) =>
      (['from', 'terminal'] as const)
        .filter((flag) => spec.allowedFlags.includes(flag) && !spec.identityFlagRoles?.[flag])
        .map((flag) => `${spec.path.join(' ')} --${flag}`)
    )
    expect(unclassified).toEqual([])
  })

  const callerFlagVerbs = ORCHESTRATION_SPECS.flatMap((spec) =>
    (['from', 'terminal'] as const)
      .filter((flag) => spec.identityFlagRoles?.[flag] === 'caller')
      .map((flag) => ({ command: spec.path[1] ?? '', flag }))
  )

  it('covers the verbs whose requests name a caller', () => {
    expect(callerFlagVerbs.length).toBeGreaterThanOrEqual(CALLER_VERBS.length)
  })

  it.each(callerFlagVerbs)(
    '$command refuses --$flag naming another caller, before any request',
    async ({ command, flag }) => {
      asSessionWithInheritedPane()
      await expect(
        invoke(command, flagMap({ ...EVERY_REQUIRED_FLAG, [flag]: 'term_sibling' }))
      ).rejects.toMatchObject({ code: 'consumer_fenced' })
      expect(callMock).not.toHaveBeenCalled()
      expect(getTerminalHandleMock).not.toHaveBeenCalled()
    }
  )

  it.each(
    ORCHESTRATION_SPECS.flatMap((spec) =>
      (['from', 'terminal'] as const)
        .filter((flag) => spec.identityFlagRoles?.[flag] === 'target')
        .map((flag) => ({ command: spec.path[1] ?? '', flag }))
    )
  )('$command passes a --$flag target through unfenced', async ({ command, flag }) => {
    asSessionWithInheritedPane()
    await invoke(command, flagMap({ ...EVERY_REQUIRED_FLAG, [flag]: 'term_sibling' })).catch(
      (error: unknown) => {
        expect(error).not.toMatchObject({ code: 'consumer_fenced' })
      }
    )
    expect(callMock.mock.calls.flatMap(([, params]) => Object.values(params ?? {}))).toContain(
      'term_sibling'
    )
  })
})

describe('every orchestration verb, enumerated', () => {
  /** Runs every verb once; returns the ones that guessed an implicit terminal. */
  async function verbsThatGuess(): Promise<string[]> {
    const guessed: string[] = []
    for (const command of Object.keys(ORCHESTRATION_HANDLERS)) {
      const verb = command.replace('orchestration ', '')
      getTerminalHandleMock.mockClear()
      callMock.mockClear()
      await invoke(verb, flagMap(EVERY_REQUIRED_FLAG)).catch(() => undefined)
      if (getTerminalHandleMock.mock.calls.length > 0) {
        guessed.push(verb)
      }
    }
    return guessed.sort()
  }

  it('guesses a terminal for no verb when the session id is present', async () => {
    // Positive control first: with no identity at all the same harness sees the guess, so an empty
    // result below is about the id, not a harness that cannot observe a guess.
    setEnv({})
    const population = await verbsThatGuess()
    expect(population).toEqual([
      'ask',
      'check',
      'dispatch',
      'dispatch-show',
      'gate-create',
      'gate-list',
      'gate-resolve',
      'reply',
      'run-create',
      'run-current',
      'run-use',
      'send',
      'task-create',
      'task-list',
      'task-update',
      'worker-list',
      'worker-start'
    ])

    asSessionWithInheritedPane()
    expect(await verbsThatGuess()).toEqual([])
  })
})