}

}

function expectSubagentSessionKey(value: unknown, label: string): string {

expect(value, label).toBeTypeOf("string");

const sessionKey = value as string;

expect(sessionKey.startsWith("agent:main:subagent:")).toBe(true);

return sessionKey;

}

function setConfig(next: Record<string, unknown>) {

hoisted.configOverride = createSubagentSpawnTestConfig(undefined, next);

}

expectFields(result, { status: "accepted", runId: "run-1" }, "spawn result");

expect(hookRunnerMocks.runSubagentSpawning).toHaveBeenCalledTimes(1);

expect(hookRunnerMocks.runSubagentSpawning).toHaveBeenCalledWith(

const [spawningEvent, spawningContext] = (hookRunnerMocks.runSubagentSpawning.mock.calls[0] ??

[]) as unknown as [Record<string, unknown>, Record<string, unknown>];

const spawningChildSessionKey = expectSubagentSessionKey(

spawningEvent?.childSessionKey,

"spawning event child session key",

);

expectFields(

spawningEvent,

{

childSessionKey: expect.stringMatching(/^agent:main:subagent:/),

childSessionKey: spawningChildSessionKey,

agentId: "main",

label: "research",

mode: "session",

},

threadRequested: true,

},

"spawning event",

);

expectFields(

spawningContext,

{

childSessionKey: expect.stringMatching(/^agent:main:subagent:/),

childSessionKey: spawningChildSessionKey,

requesterSessionKey: "main",

},

"spawning context",

);

expect(hookRunnerMocks.runSubagentSpawned).toHaveBeenCalledTimes(1);

},

"spawned requester",

);

expect(event.childSessionKey).toEqual(expect.stringMatching(/^agent:main:subagent:/));

expectSubagentSessionKey(event.childSessionKey, "spawned event child session key");

expectFields(

ctx,

{

const [event] = (hookRunnerMocks.runSubagentEnded.mock.calls[0] ?? []) as unknown as [

Record<string, unknown>,

];

expect(event.targetSessionKey).toEqual(expect.stringMatching(/^agent:main:subagent:/));

expectSubagentSessionKey(event.targetSessionKey, "ended event target session key");

expectFields(

event,

{