Function fakeSession

packages/agent-core/test/session/subagent-host.test.ts:1513–1565

(
  parent: Agent,
  child: Agent,
  metadataAgents: Session['metadata']['agents'] = {},
)

});

function fakeSession(
  parent: Agent,
  child: Agent,
  metadataAgents: Session['metadata']['agents'] = {},
) {
  const agents = new Map<string, Agent>([['main', parent]]);
  if (metadataAgents['agent-0'] !== undefined) {
    agents.set('agent-0', child);
  }
  return {
    agents,
    options: { kimiHomeDir: undefined },
    metadata: {
      createdAt: '2026-01-01T00:00:00.000Z',
      updatedAt: '2026-01-01T00:00:00.000Z',
      title: 'Test Session',
      isCustomTitle: false,
      agents: metadataAgents,
      custom: {},
    },
    writeMetadata: vi.fn(async () => {}),
    systemContextKaos: vi.fn((cwd: string) => parent.kaos.withCwd(cwd)),
    getReadyAgent: vi.fn((id: string) => agents.get(id)),
    ensureAgentResumed: vi.fn(async (id: string) => {
      const agent = agents.get(id);
      if (agent === undefined) {
        throw new Error(`Agent "${id}" was not found`);
      }
      return agent;
    }),
    createAgent: vi.fn(
      async (
        config: Parameters<Session['createAgent']>[0],
        options: Parameters<Session['createAgent']>[1] = {},
      ) => {
        agents.set('agent-0', child);
        const parentAgentId = options.parentAgentId ?? null;
        if (options.persistMetadata !== false) {
          metadataAgents['agent-0'] = {
            homedir: '/tmp/kimi-session/agents/agent-0',
            type: config.type ?? 'main',
            parentAgentId,
            swarmItem: options.swarmItem,
          };
        }
        if (options.profile !== undefined) {
          child.useProfile(options.profile);
        }
        return { id: 'agent-0', agent: child };
      },
    ),
  } as unknown as Session;
}

function contextProfile(): ResolvedAgentProfile {
  return {