Files
stack/apps/gateway/src/agent/__tests__/session-ownership.test.ts
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2026-08-12 20:11:12 +00:00

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41 KiB
TypeScript

import 'reflect-metadata';
import { readFileSync } from 'node:fs';
import { resolve } from 'node:path';
import { ForbiddenException, NotFoundException } from '@nestjs/common';
import { Test, type TestingModule } from '@nestjs/testing';
import { describe, expect, it, vi } from 'vitest';
vi.mock('../agent.service.js', () => ({ AgentService: class AgentService {} }));
vi.mock('../../commands/command-executor.service.js', () => ({
CommandExecutorService: class CommandExecutorService {},
}));
vi.mock('../routing/routing-engine.service.js', () => ({
RoutingEngineService: class RoutingEngineService {},
}));
import { SessionsController } from '../sessions.controller.js';
import { AgentService } from '../agent.service.js';
import { ChatController } from '../../chat/chat.controller.js';
import { ChatGateway } from '../../chat/chat.gateway.js';
import type { AgentSession } from '../agent.service.js';
import type { SessionInfoDto } from '../session.dto.js';
import type { HarnessAdapter, HarnessConversationService } from '@mosaicstack/types';
import { AuthGuard } from '../../auth/auth.guard.js';
import { AUTH } from '../../auth/auth.tokens.js';
import { BRAIN } from '../../brain/brain.tokens.js';
import { CommandRegistryService } from '../../commands/command-registry.service.js';
import { CommandExecutorService } from '../../commands/command-executor.service.js';
import { RoutingEngineService } from '../routing/routing-engine.service.js';
import { ChatRuntimeRouter } from '../../chat/chat-runtime-router.js';
import { EmbeddedChatRuntime } from '../../chat/embedded-chat.runtime.js';
import { ownConversation } from '../../chat/chat-runtime.js';
import type { LegacyRuntimeStream } from '../../chat/chat-runtime.js';
import { HarnessChatRuntime } from '../../chat/harness-chat.runtime.js';
import { HarnessRegistry } from '../../harness/harness.registry.js';
import { HARNESS_CONVERSATION_SERVICE_UNAVAILABLE } from '../../harness/harness.tokens.js';
const USER_A = { id: 'user-a', tenantId: 'tenant-a' };
const USER_B = { id: 'user-b', tenantId: 'tenant-b' };
const CONVERSATION_ID = '11111111-1111-4111-8111-111111111111';
function makeSessionInfo(overrides?: Partial<SessionInfoDto>): SessionInfoDto {
return {
id: CONVERSATION_ID,
provider: 'test-provider',
modelId: 'test-model',
createdAt: new Date('2026-07-12T00:00:00Z').toISOString(),
promptCount: 0,
channels: [],
durationMs: 0,
metrics: {
tokens: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, total: 0 },
modelSwitches: 0,
messageCount: 0,
lastActivityAt: new Date('2026-07-12T00:00:00Z').toISOString(),
},
...overrides,
};
}
function makeAgentSession(owner = USER_A): AgentSession {
return {
id: CONVERSATION_ID,
provider: 'test-provider',
modelId: 'test-model',
piSession: {
thinkingLevel: 'off',
getAvailableThinkingLevels: vi.fn().mockReturnValue(['off', 'low', 'high']),
setThinkingLevel: vi.fn(),
abort: vi.fn().mockResolvedValue(undefined),
prompt: vi.fn().mockResolvedValue(undefined),
dispose: vi.fn(),
getSessionStats: vi.fn(),
getContextUsage: vi.fn(),
} as unknown as AgentSession['piSession'],
listeners: new Set(),
unsubscribe: vi.fn(),
createdAt: Date.now(),
promptCount: 0,
channels: new Set(),
skillPromptAdditions: [],
sandboxDir: '/tmp',
allowedTools: null,
userId: owner.id,
tenantId: owner.tenantId,
metrics: {
tokens: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, total: 0 },
modelSwitches: 0,
messageCount: 0,
lastActivityAt: new Date('2026-07-12T00:00:00Z').toISOString(),
},
};
}
/**
* A shape-complete, non-throwing AgentService fake scoped so that USER_B (a foreign owner guessing
* USER_A's conversation id) is never granted the session. Because every method exists and no method
* throws for a wrong shape, production runs to its real ownership decision — the RED never comes from
* a `getSession is not a function` TypeError, only from a router-boundary/scope assertion mismatch.
*/
function makeScopedAgentService() {
const foreign = makeAgentSession(USER_A);
return {
listSessions: vi.fn((scope?: { userId: string; tenantId?: string }) =>
scope?.userId === USER_B.id ? [] : [makeSessionInfo({ id: foreign.id })],
),
getSessionInfo: vi.fn((_id: string, scope?: { userId: string; tenantId?: string }) =>
scope?.userId === USER_B.id ? undefined : makeSessionInfo({ id: foreign.id }),
),
destroySession: vi.fn(),
getSession: vi.fn((_id: string, scope?: { userId: string; tenantId?: string }) =>
scope?.userId === USER_B.id ? undefined : foreign,
),
createSession: vi.fn().mockRejectedValue(new NotFoundException('Session scope mismatch')),
onEvent: vi.fn(() => vi.fn()),
addChannel: vi.fn(),
removeChannel: vi.fn(),
recordMessage: vi.fn(),
prompt: vi.fn().mockResolvedValue(undefined),
};
}
type ScopedAgentService = ReturnType<typeof makeScopedAgentService>;
/**
* A structurally-complete harness conversation service that throws if any method is invoked.
* Fronted behind the legacy runtime's harness slot: the legacy path must never reach it.
*/
const failIfUsedConversationService = {
attach: () => {
throw new Error('harness conversation service must not be reached on the legacy path');
},
detach: () => {
throw new Error('harness conversation service must not be reached on the legacy path');
},
send: () => {
throw new Error('harness conversation service must not be reached on the legacy path');
},
subscribeFrom: async function* () {
throw new Error('harness conversation service must not be reached on the legacy path');
},
} as unknown as HarnessConversationService;
/** A structurally-complete, non-sentinel conversation service used to satisfy the pi-rpc readiness gate. */
const boundConversationService = {
attach: () => Promise.reject(new Error('unused')),
detach: () => Promise.reject(new Error('unused')),
send: () => Promise.reject(new Error('unused')),
subscribeFrom: async function* () {
throw new Error('unused');
},
} as unknown as HarnessConversationService;
function registryWith(adapterIds: readonly string[]): HarnessRegistry {
const registry = new HarnessRegistry();
for (const id of adapterIds) {
registry.register({
id,
describe: () => Promise.reject(new Error('unused')),
catalog: () => Promise.reject(new Error('unused')),
create: () => Promise.reject(new Error('unused')),
resume: () => Promise.reject(new Error('unused')),
} as HarnessAdapter);
}
return registry;
}
/**
* Build the real legacy-mode {@link ChatRuntimeRouter} fronting a real {@link EmbeddedChatRuntime}
* that holds the scoped AgentService fake. This is the ONLY path server-derived scope may travel to
* reach an AgentService: controller/gateway → ChatRuntimeRouter → EmbeddedChatRuntime → AgentService.
* The `embeddedAgentService` handed here is a SEPARATE instance from the directly-injected fake, so a
* call landing on it proves the router-delegation redesign is live rather than the old direct path.
*/
function legacyRouterFronting(agentService: unknown): ChatRuntimeRouter {
const embedded = new EmbeddedChatRuntime(agentService as never);
const harness = new HarnessChatRuntime(failIfUsedConversationService);
const router = new ChatRuntimeRouter(
new HarnessRegistry(),
HARNESS_CONVERSATION_SERVICE_UNAVAILABLE,
embedded,
harness,
'legacy',
);
router.onModuleInit();
return router;
}
/**
* The AgentService method names the controller/gateway must NEVER drive on the runtime at the
* delegation boundary. An AgentService-shaped router shim (a method-for-method mirror) would record
* one of these instead of the frozen legacy op, so asserting their ABSENCE from the observed runtime
* call set defeats the shim on INVOCATION evidence — never satisfiable by dead source text.
*/
const FORBIDDEN_AGENT_OPS = [
'getSession',
'createSession',
'onEvent',
'addChannel',
'prompt',
'setThinking',
'abort',
] as const;
/**
* Wrap a real {@link ChatRuntimeRouter} in a call-recording Proxy. Every property access that yields
* an OWN/inherited callable is returned as a thin wrapper that appends the method name to `calls` at
* INVOCATION time and forwards to the real method (bound to the real target, so the router's internal
* delegation to the embedded runtime runs untouched below this boundary). Non-function and MISSING
* properties are returned verbatim via Reflect.get — the observer NEVER fabricates a value, returns a
* canned outcome, or delegates a not-yet-implemented named op, so it cannot itself become a shim.
*
* The result is a RUNTIME call set of exactly the methods the controller/gateway invoke ON the router
* at the delegation seam. Only an actual call can enter it; a dead method, comment, or string in the
* production source cannot. This replaces the earlier `source.toContain('<frozen op>')` proof — which
* a dead declaration could satisfy while production still executed a shim — with invocation evidence.
*/
function makeRecordingRouter(target: ChatRuntimeRouter, calls: string[]): ChatRuntimeRouter {
return new Proxy(target, {
get(t, prop) {
const value = Reflect.get(t, prop);
if (typeof value === 'function' && typeof prop === 'string') {
return (...args: unknown[]) => {
calls.push(prop);
return (value as (...a: unknown[]) => unknown).apply(t, args);
};
}
return value;
},
}) as ChatRuntimeRouter;
}
/**
* Real Nest DI dual-provider fixture (mirrors the blessed group-3 pattern in chat-security.test.ts).
*
* BOTH an `AgentService` provider (the FORBIDDEN direct dependency) and a `ChatRuntimeRouter` provider
* (fronting a real EmbeddedChatRuntime over a SEPARATE scoped AgentService) are registered. Production
* resolves whichever its constructor declares:
* - RED today: the controller/gateway `@Inject(AgentService)` → the direct fake is consulted, the
* router (and its embedded fake) is never reached.
* - GREEN later: the controller/gateway inject `ChatRuntimeRouter` → the direct fake is never
* touched (stays at zero) and scope is observed inside the embedded fake behind the router.
* The SAME test body reds today and greens later; a method-for-method AgentService shim on the router
* records a FORBIDDEN op (and never the frozen legacy op) in the observed runtime call set, and
* restoring the direct injection cannot satisfy the "direct fake at zero" / "embedded fake observed
* scope" / "frozen op invoked on the router" anchors. The router is wrapped by {@link
* makeRecordingRouter} so those anchors are runtime invocation evidence, not source substrings.
*/
function buildRestModule(
directAgentService: ScopedAgentService,
embeddedAgentService: ScopedAgentService,
routerCalls: string[],
): Promise<TestingModule> {
return (
Test.createTestingModule({
controllers: [ChatController],
providers: [
{ provide: AgentService, useValue: directAgentService },
{
provide: ChatRuntimeRouter,
useFactory: () =>
makeRecordingRouter(legacyRouterFronting(embeddedAgentService), routerCalls),
},
],
})
// ChatController's @UseGuards(AuthGuard) is resolved during instance loading; AuthGuard injects
// AUTH, an HTTP-only concern never exercised by a direct handler call. Stub it so the graph
// resolves and the test reds on BEHAVIOUR, not on a DI collection error.
.overrideGuard(AuthGuard)
.useValue({ canActivate: () => true })
.compile()
);
}
function buildGatewayModule(
directAgentService: ScopedAgentService,
embeddedAgentService: ScopedAgentService,
routerCalls: string[],
): Promise<TestingModule> {
const brain = {
conversations: {
// The sender OWNS this durable conversation, so the browser-send admission gate lets the turn
// reach the router seam. Foreignness is asserted downstream at the in-memory agent session
// (getSession({USER_B}) -> undefined), not at durable admission — the admission-rejection
// property has its own dedicated coverage.
findById: vi.fn().mockResolvedValue({ id: CONVERSATION_ID, userId: USER_B.id }),
create: vi.fn().mockResolvedValue(undefined),
update: vi.fn().mockResolvedValue(undefined),
findMessages: vi.fn().mockResolvedValue([]),
addMessage: vi.fn().mockResolvedValue({ id: 'persisted-turn' }),
},
};
return Test.createTestingModule({
providers: [
ChatGateway,
{ provide: AgentService, useValue: directAgentService },
{ provide: AUTH, useValue: { api: { getSession: vi.fn().mockResolvedValue(null) } } },
{ provide: BRAIN, useValue: brain },
{ provide: CommandRegistryService, useValue: { getManifest: vi.fn().mockReturnValue([]) } },
{ provide: CommandExecutorService, useValue: { execute: vi.fn() } },
{
provide: RoutingEngineService,
useValue: {
resolve: vi.fn().mockResolvedValue({ provider: 'test', model: 'test-model' }),
},
},
{
provide: ChatRuntimeRouter,
useFactory: () =>
makeRecordingRouter(legacyRouterFronting(embeddedAgentService), routerCalls),
},
],
}).compile();
}
describe('TESS-M1-SEC-002 AgentService ownership boundary', () => {
it('requires explicit owner+tenant scope on protected session operations', () => {
const source = readFileSync(resolve('src/agent/agent.service.ts'), 'utf8');
expect(source).toContain('getSession(sessionId: string, scope: ActorTenantScope)');
expect(source).toContain('listSessions(scope: ActorTenantScope)');
expect(source).toContain('getSessionInfo(sessionId: string, scope: ActorTenantScope)');
expect(source).toContain(
'addChannel(sessionId: string, channel: string, scope: ActorTenantScope)',
);
expect(source).toContain(
'removeChannel(sessionId: string, channel: string, scope: ActorTenantScope)',
);
expect(source).toContain(
'async prompt(sessionId: string, message: string, scope: ActorTenantScope)',
);
expect(source).toContain('scope: ActorTenantScope,');
expect(source).toContain('async destroySession(sessionId: string, scope: ActorTenantScope)');
expect(source).not.toContain('scope?: ActorTenantScope');
});
});
describe('TESS-M1-SEC-002 REST session ownership and tenant binding', () => {
it('lists only sessions owned by the authenticated owner+tenant scope', () => {
const agentService = makeScopedAgentService();
const controller = new SessionsController(agentService as never);
expect(controller.list(USER_B)).toEqual({ sessions: [], total: 0 });
expect(agentService.listSessions).toHaveBeenCalledWith({
userId: USER_B.id,
tenantId: USER_B.tenantId,
});
});
it('does not reveal another owner/tenant session by guessed id', () => {
const agentService = makeScopedAgentService();
const controller = new SessionsController(agentService as never);
expect(() => controller.findOne(CONVERSATION_ID, USER_B)).toThrow(NotFoundException);
expect(agentService.getSessionInfo).toHaveBeenCalledWith(CONVERSATION_ID, {
userId: USER_B.id,
tenantId: USER_B.tenantId,
});
});
it('does not terminate another owner/tenant session by guessed id', async () => {
const agentService = makeScopedAgentService();
const controller = new SessionsController(agentService as never);
await expect(controller.destroy(CONVERSATION_ID, USER_B)).rejects.toBeInstanceOf(
NotFoundException,
);
expect(agentService.destroySession).not.toHaveBeenCalled();
});
});
describe('TESS-M1-SEC-002 REST chat send ownership and tenant binding (router-delegated legacy runtime)', () => {
// TESS test A — REST /api/chat send. The genuine RED is the router-delegation redesign, not a slot
// swap: the forbidden directly-injected AgentService must go UNtouched while the server-derived
// scope is observed inside the real ChatRuntimeRouter → EmbeddedChatRuntime → AgentService path.
it('routes a REST send through completeLegacyRestTurn and never the directly-injected AgentService', async () => {
const directAgentService = makeScopedAgentService(); // FORBIDDEN direct dependency
const embeddedAgentService = makeScopedAgentService(); // reached ONLY via router → embedded delegation
const routerCalls: string[] = []; // runtime call set observed AT the controller → router seam
const moduleRef = await buildRestModule(directAgentService, embeddedAgentService, routerCalls);
try {
const controller = moduleRef.get(ChatController, { strict: false });
// Foreign ownership is denied (never resolves) — a control that holds today AND at GREEN.
await expect(
controller.chat({ conversationId: CONVERSATION_ID, content: 'take over' }, USER_B),
).rejects.toBeDefined();
// Soft anchors so EVERY anchor is evaluated under each mutation, not just the first to fail.
// RUNTIME anchor A1 — delegation: the controller must INVOKE the frozen legacy op on the router.
// Only an actual call enters routerCalls; a dead method/comment/string cannot. RED today (the
// controller @Inject(AgentService) and never calls the router). GREEN once it drives the op.
expect
.soft(routerCalls, 'controller must invoke completeLegacyRestTurn on the router')
.toContain('completeLegacyRestTurn');
// RUNTIME anchor A2 — nondelegation: the controller must not drive any AgentService-shaped op on
// the router. An AgentService-shaped router shim records one of these → RED, defeating the shim
// on invocation evidence (not source text). A dead named method added alongside the shim does not
// help: it is never invoked, so it never enters routerCalls while a forbidden op still does.
for (const op of FORBIDDEN_AGENT_OPS) {
expect
.soft(routerCalls, `router seam must not invoke AgentService.${op}`)
.not.toContain(op);
}
// RUNTIME anchor A3 — the forbidden directly-injected AgentService stays at zero (fails today;
// restoring the direct injection keeps it failing).
expect.soft(directAgentService.getSession).not.toHaveBeenCalled();
// RUNTIME anchor A4 — server-derived scope observed INSIDE the separate embedded fake behind the
// router (fails today; the router path is never taken).
expect.soft(embeddedAgentService.getSession).toHaveBeenCalledWith(CONVERSATION_ID, {
userId: USER_B.id,
tenantId: USER_B.tenantId,
});
// Zero foreign mutation on either path (holds today and at GREEN).
expect.soft(directAgentService.prompt).not.toHaveBeenCalled();
expect.soft(embeddedAgentService.prompt).not.toHaveBeenCalled();
// Defense-in-depth (NOT load-bearing; the runtime anchors above carry the anti-mask): the
// controller no longer declares the direct embedded AgentService dependency. A negative source
// check cannot be satisfied by dead text — it only fails when the injection is present.
const controllerSource = readFileSync(resolve('src/chat/chat.controller.ts'), 'utf8');
expect.soft(controllerSource).not.toContain('@Inject(AgentService)');
} finally {
await moduleRef.close();
}
});
});
describe('TESS-M1-SEC-002 WebSocket session ownership and tenant binding (router-delegated legacy runtime)', () => {
function makeSocket() {
return {
id: 'socket-b',
connected: true,
data: { user: USER_B, session: { id: 'auth-session-b', userId: USER_B.id } },
emit: vi.fn(),
disconnect: vi.fn(),
};
}
// TESS test B — WebSocket send/attach.
it('routes a WebSocket send through prepareLegacySocketTurn and never the directly-injected AgentService', async () => {
const directAgentService = makeScopedAgentService();
const embeddedAgentService = makeScopedAgentService();
const routerCalls: string[] = [];
const moduleRef = await buildGatewayModule(
directAgentService,
embeddedAgentService,
routerCalls,
);
try {
const gateway = moduleRef.get(ChatGateway, { strict: false });
const socket = makeSocket();
await Promise.resolve(
gateway.handleMessage(socket as never, {
conversationId: CONVERSATION_ID,
content: 'attach to foreign session',
}),
).catch(() => undefined);
// RUNTIME anchor B1 — delegation: the gateway must invoke the frozen socket op on the router.
expect
.soft(routerCalls, 'gateway must invoke prepareLegacySocketTurn on the router')
.toContain('prepareLegacySocketTurn');
// RUNTIME anchor B2 — nondelegation: no AgentService-shaped op on the router (defeats the shim).
for (const op of FORBIDDEN_AGENT_OPS) {
expect
.soft(routerCalls, `router seam must not invoke AgentService.${op}`)
.not.toContain(op);
}
// RED anchor B3 — forbidden direct AgentService untouched (fails today, gateway injects it).
expect.soft(directAgentService.getSession).not.toHaveBeenCalled();
// RED anchor B4 — scope observed inside router → embedded delegation (fails today, never reached).
expect.soft(embeddedAgentService.getSession).toHaveBeenCalledWith(CONVERSATION_ID, {
userId: USER_B.id,
tenantId: USER_B.tenantId,
});
// Foreign session gets zero lease/listener/channel/prompt on EITHER path (holds today and GREEN).
expect.soft(directAgentService.onEvent).not.toHaveBeenCalled();
expect.soft(directAgentService.addChannel).not.toHaveBeenCalled();
expect.soft(directAgentService.prompt).not.toHaveBeenCalled();
expect.soft(embeddedAgentService.onEvent).not.toHaveBeenCalled();
expect.soft(embeddedAgentService.addChannel).not.toHaveBeenCalled();
expect.soft(embeddedAgentService.prompt).not.toHaveBeenCalled();
expect
.soft(socket.emit)
.toHaveBeenCalledWith(
'error',
expect.objectContaining({ conversationId: CONVERSATION_ID }),
);
// Defense-in-depth (NOT load-bearing): gateway no longer declares the direct dependency.
const gatewaySource = readFileSync(resolve('src/chat/chat.gateway.ts'), 'utf8');
expect.soft(gatewaySource).not.toContain('@Inject(AgentService)');
} finally {
await moduleRef.close();
}
});
// TESS test C — WebSocket set:thinking.
it('routes set:thinking through setLegacyThinking and never the directly-injected AgentService', async () => {
const directAgentService = makeScopedAgentService();
const embeddedAgentService = makeScopedAgentService();
const routerCalls: string[] = [];
const moduleRef = await buildGatewayModule(
directAgentService,
embeddedAgentService,
routerCalls,
);
try {
const gateway = moduleRef.get(ChatGateway, { strict: false });
const socket = makeSocket();
await Promise.resolve(
gateway.handleSetThinking(socket as never, {
conversationId: CONVERSATION_ID,
level: 'high',
}),
).catch(() => undefined);
// RUNTIME anchor C1 — delegation: the gateway must invoke the frozen thinking op on the router.
expect
.soft(routerCalls, 'gateway must invoke setLegacyThinking on the router')
.toContain('setLegacyThinking');
// RUNTIME anchor C2 — nondelegation: no AgentService-shaped op on the router (defeats the shim).
for (const op of FORBIDDEN_AGENT_OPS) {
expect
.soft(routerCalls, `router seam must not invoke AgentService.${op}`)
.not.toContain(op);
}
expect.soft(directAgentService.getSession).not.toHaveBeenCalled();
expect.soft(embeddedAgentService.getSession).toHaveBeenCalledWith(CONVERSATION_ID, {
userId: USER_B.id,
tenantId: USER_B.tenantId,
});
expect
.soft(socket.emit)
.toHaveBeenCalledWith(
'error',
expect.objectContaining({ conversationId: CONVERSATION_ID }),
);
} finally {
await moduleRef.close();
}
});
// TESS test D — WebSocket abort.
it('routes abort through abortLegacyTurn and never the directly-injected AgentService', async () => {
const directAgentService = makeScopedAgentService();
const embeddedAgentService = makeScopedAgentService();
const routerCalls: string[] = [];
const moduleRef = await buildGatewayModule(
directAgentService,
embeddedAgentService,
routerCalls,
);
try {
const gateway = moduleRef.get(ChatGateway, { strict: false });
const socket = makeSocket();
await Promise.resolve(
gateway.handleAbort(socket as never, { conversationId: CONVERSATION_ID }),
).catch(() => undefined);
// RUNTIME anchor D1 — delegation: the gateway must invoke the frozen abort op on the router.
expect
.soft(routerCalls, 'gateway must invoke abortLegacyTurn on the router')
.toContain('abortLegacyTurn');
// RUNTIME anchor D2 — nondelegation: no AgentService-shaped op on the router (defeats the shim).
for (const op of FORBIDDEN_AGENT_OPS) {
expect
.soft(routerCalls, `router seam must not invoke AgentService.${op}`)
.not.toContain(op);
}
expect.soft(directAgentService.getSession).not.toHaveBeenCalled();
expect.soft(embeddedAgentService.getSession).toHaveBeenCalledWith(CONVERSATION_ID, {
userId: USER_B.id,
tenantId: USER_B.tenantId,
});
expect
.soft(socket.emit)
.toHaveBeenCalledWith(
'error',
expect.objectContaining({ conversationId: CONVERSATION_ID }),
);
} finally {
await moduleRef.close();
}
});
// TESS test E (genuine, unchanged) — pi-rpc browser-legacy refusal.
it('rejects a browser legacy raw message in pi-rpc mode with a fixed typed unsupported and executes nothing', async () => {
// pi-rpc: the harness runtime is live. The browser legacy `message` path is unsupported and
// must be refused with a fixed typed code, touching neither the embedded AgentService nor the
// harness conversation service.
const agentService = makeScopedAgentService();
const embedded = new EmbeddedChatRuntime(agentService as never);
const harnessConversation = {
attach: vi.fn(),
detach: vi.fn(),
send: vi.fn(),
subscribeFrom: vi.fn(),
};
const harness = new HarnessChatRuntime(harnessConversation as never);
const router = new ChatRuntimeRouter(
registryWith(['pi']),
boundConversationService,
embedded,
harness,
'pi-rpc',
);
router.onModuleInit();
const brain = {
conversations: {
findById: vi.fn().mockResolvedValue(undefined),
create: vi.fn().mockResolvedValue(undefined),
update: vi.fn().mockResolvedValue(undefined),
findMessages: vi.fn().mockResolvedValue([]),
addMessage: vi.fn().mockResolvedValue(undefined),
},
};
const gateway = new ChatGateway(
router as never,
{} as never,
brain as never,
{ getManifest: vi.fn().mockReturnValue([]) } as never,
{ execute: vi.fn() } as never,
{ resolve: vi.fn() } as never,
);
const socket = {
id: 'socket-b',
connected: true,
data: { user: USER_B, session: { id: 'auth-session-b', userId: USER_B.id } },
emit: vi.fn(),
disconnect: vi.fn(),
};
await Promise.resolve(
gateway.handleMessage(socket as never, {
conversationId: CONVERSATION_ID,
content: 'route me',
}),
).catch(() => undefined);
expect(socket.emit).toHaveBeenCalledWith(
'error',
expect.objectContaining({ code: 'runtime_unsupported' }),
);
expect(agentService.getSession).not.toHaveBeenCalled();
expect(agentService.prompt).not.toHaveBeenCalled();
expect(harnessConversation.attach).not.toHaveBeenCalled();
expect(harnessConversation.send).not.toHaveBeenCalled();
});
});
// ---------------------------------------------------------------------------
// Task-5 AMEND — embedded runtime lease lifecycle (G1) + ownership collapse (G5).
// These drive the real EmbeddedChatRuntime directly over a shape-complete AgentService
// fake (every touched method exists, so a RED can only come from behavior, never a
// `getSession is not a function` TypeError). Ownership context is minted through the
// real `ownConversation` factory — the only sanctioned way to reach a port op.
// ---------------------------------------------------------------------------
const EMBEDDED_SCOPE = { userId: USER_A.id, tenantId: USER_A.tenantId };
const CONVERSATION_UNAVAILABLE_RESULT = {
ok: false,
code: 'conversation_unavailable',
retryable: false,
} as const;
/** A stream sink; `channelId` is server-derived, `onEvent` records nothing here. */
function makeStream(): LegacyRuntimeStream {
return { channelId: 'websocket:test-1', onEvent: vi.fn() };
}
/**
* getSession → undefined (session missing), createSession → rejects with `err`. Exercises the
* `resolveOrCreate` collapse branch. `prompt` exists so its ABSENCE from the call record proves
* the turn short-circuited before any dispatch.
*/
function makeCollapsingAgentService(err: Error) {
return {
getSession: vi.fn(() => undefined),
createSession: vi.fn().mockRejectedValue(err),
onEvent: vi.fn(() => vi.fn()),
addChannel: vi.fn(),
removeChannel: vi.fn(),
prompt: vi.fn().mockResolvedValue(undefined),
recordTokenUsage: vi.fn(),
};
}
/** getSession → a live owned session, so `resolveOrCreate` succeeds and a lease is built. */
function makeLeaseAgentService() {
const session = makeAgentSession(USER_A);
const unsubscribe = vi.fn();
const svc = {
getSession: vi.fn(() => session),
createSession: vi.fn(),
onEvent: vi.fn(() => unsubscribe),
addChannel: vi.fn(),
removeChannel: vi.fn(),
prompt: vi.fn().mockResolvedValue(undefined),
recordTokenUsage: vi.fn(),
};
return { svc, unsubscribe, session };
}
/**
* getSession → a live owned session (REST resolveOrCreate succeeds), onEvent returns a `detach`
* spy, and `prompt` REJECTS with a non-timeout error. Drives the REST-turn catch path so the single
* idempotent teardown must clear the 120s timeout and detach the listener exactly once.
*/
function makeRejectingPromptAgentService() {
const session = makeAgentSession(USER_A);
const detach = vi.fn();
const svc = {
getSession: vi.fn(() => session),
createSession: vi.fn(),
onEvent: vi.fn(() => detach),
addChannel: vi.fn(),
removeChannel: vi.fn(),
prompt: vi.fn().mockRejectedValue(new Error('agent backend exploded')),
recordTokenUsage: vi.fn(),
};
return { svc, detach };
}
describe('TESS Task-5 embedded ownership collapse (missing and foreign are indistinguishable, never throw)', () => {
const ctx = ownConversation(CONVERSATION_ID, EMBEDDED_SCOPE);
it('collapses a foreign (Forbidden) create to conversation_unavailable and never throws', async () => {
const svc = makeCollapsingAgentService(new ForbiddenException('foreign owner'));
const runtime = new EmbeddedChatRuntime(svc as never);
const result = await runtime.completeLegacyRestTurn(ctx, { content: 'take over' });
expect(result).toEqual(CONVERSATION_UNAVAILABLE_RESULT);
expect(svc.prompt).not.toHaveBeenCalled();
});
it('collapses a missing (NotFound) create to conversation_unavailable and never throws', async () => {
const svc = makeCollapsingAgentService(new NotFoundException('no such conversation'));
const runtime = new EmbeddedChatRuntime(svc as never);
const result = await runtime.completeLegacyRestTurn(ctx, { content: 'hello' });
expect(result).toEqual(CONVERSATION_UNAVAILABLE_RESULT);
expect(svc.prompt).not.toHaveBeenCalled();
});
it('returns the IDENTICAL collapse for foreign and missing so neither can be distinguished', async () => {
const foreign = new EmbeddedChatRuntime(
makeCollapsingAgentService(new ForbiddenException('foreign owner')) as never,
);
const missing = new EmbeddedChatRuntime(
makeCollapsingAgentService(new NotFoundException('no such conversation')) as never,
);
const foreignResult = await foreign.completeLegacyRestTurn(ctx, { content: 'x' });
const missingResult = await missing.completeLegacyRestTurn(ctx, { content: 'x' });
expect(foreignResult).toEqual(missingResult);
expect(foreignResult).toEqual(CONVERSATION_UNAVAILABLE_RESULT);
});
});
describe('TESS Task-5 embedded socket lease lifecycle (one-shot dispatch, idempotent dispose, partial-setup rollback)', () => {
const ctx = ownConversation(CONVERSATION_ID, EMBEDDED_SCOPE);
it('dispatches the turn exactly once; a second dispatch is a no-op turn_already_dispatched', async () => {
const { svc } = makeLeaseAgentService();
const runtime = new EmbeddedChatRuntime(svc as never);
const prepared = await runtime.prepareLegacySocketTurn(ctx, { content: 'first' }, makeStream());
expect(prepared.ok).toBe(true);
if (!prepared.ok) throw new Error('prepareLegacySocketTurn should succeed');
const lease = prepared.value;
const first = await lease.dispatch();
expect(first).toEqual({ ok: true, value: undefined });
expect(svc.prompt).toHaveBeenCalledTimes(1);
const second = await lease.dispatch();
expect(second).toEqual({ ok: false, code: 'turn_already_dispatched', retryable: false });
// Zero additional effect — the second dispatch must not prompt again.
expect(svc.prompt).toHaveBeenCalledTimes(1);
});
it('disposes once; a second dispose is a silent no-op that never re-detaches or destroys the session', async () => {
const { svc, unsubscribe, session } = makeLeaseAgentService();
const runtime = new EmbeddedChatRuntime(svc as never);
const prepared = await runtime.prepareLegacySocketTurn(ctx, { content: 'x' }, makeStream());
expect(prepared.ok).toBe(true);
if (!prepared.ok) throw new Error('prepareLegacySocketTurn should succeed');
const lease = prepared.value;
await lease.dispose();
await lease.dispose();
// Listener + channel torn down exactly once across two dispose calls.
expect(unsubscribe).toHaveBeenCalledTimes(1);
expect(svc.removeChannel).toHaveBeenCalledTimes(1);
// Disposal never terminates the underlying session or process.
expect(session.piSession.abort).not.toHaveBeenCalled();
expect(session.piSession.dispose).not.toHaveBeenCalled();
});
it('rolls back the acquired listener and returns a total safe failure when channel attach fails mid-setup', async () => {
const { svc, unsubscribe } = makeLeaseAgentService();
svc.addChannel = vi.fn(() => {
throw new Error('channel attach failed');
});
const runtime = new EmbeddedChatRuntime(svc as never);
// Must NOT throw out of the port — a partial setup collapses to a total safe failure.
const prepared = await runtime.prepareLegacySocketTurn(ctx, { content: 'x' }, makeStream());
expect(prepared.ok).toBe(false);
// Exactly what was acquired (the event listener) is rolled back.
expect(unsubscribe).toHaveBeenCalledTimes(1);
});
});
describe('TESS Task-5 embedded REST turn teardown (a prompt rejection frees the timer + listener exactly once)', () => {
const ctx = ownConversation(CONVERSATION_ID, EMBEDDED_SCOPE);
it('clears the 120s timeout and detaches the listener exactly once when prompt() rejects, leaving no timer to reject the abandoned done-promise later (Task 5 finding 6)', async () => {
const { svc, detach } = makeRejectingPromptAgentService();
const runtime = new EmbeddedChatRuntime(svc as never);
// A rejected `done` promise firing after completeLegacyRestTurn has already returned would
// surface as an unhandledRejection — the leak this test fences. Capture any that escape.
const unhandled: unknown[] = [];
const onUnhandled = (reason: unknown): void => {
unhandled.push(reason);
};
process.on('unhandledRejection', onUnhandled);
vi.useFakeTimers();
try {
const result = await runtime.completeLegacyRestTurn(ctx, {
content: 'trigger a backend failure',
});
// The rejection collapses to a total safe failure (not a timeout) — never throws out of the port.
expect(result).toEqual({ ok: false, code: 'operation_failed', retryable: false });
// The single idempotent dispose ran in the catch: listener detached exactly once.
expect(detach).toHaveBeenCalledTimes(1);
// dispose() cleared the REST timeout, so advancing far past it (120s) fires nothing: no second
// detach, and — the actual leak — no live timer left to reject the now-abandoned `done` promise.
vi.advanceTimersByTime(600_000);
expect(detach).toHaveBeenCalledTimes(1);
} finally {
vi.useRealTimers();
}
// Let any scheduled rejection surface on a real macrotask, then confirm none did.
await new Promise((resolve) => setTimeout(resolve, 0));
process.off('unhandledRejection', onUnhandled);
expect(unhandled).toHaveLength(0);
});
it('bounds a hung prompt: when prompt() never settles and no agent_end arrives, the 120s timeout ends the turn with a timeout result and exactly one teardown, no unhandledRejection (Task 5 finding 6 — pending-prompt timeout)', async () => {
const session = makeAgentSession(USER_A);
const detach = vi.fn();
const svc = {
getSession: vi.fn(() => session),
createSession: vi.fn(),
onEvent: vi.fn(() => detach),
addChannel: vi.fn(),
removeChannel: vi.fn(),
// The prompt never resolves or rejects — a hung agent backend. Under the pre-fix sequential
// `await prompt()` the timer could never even be observed, so the turn hung forever.
prompt: vi.fn(() => new Promise<void>(() => undefined)),
recordTokenUsage: vi.fn(),
};
const runtime = new EmbeddedChatRuntime(svc as never);
const unhandled: unknown[] = [];
const onUnhandled = (reason: unknown): void => {
unhandled.push(reason);
};
process.on('unhandledRejection', onUnhandled);
vi.useFakeTimers();
try {
const resultPromise = runtime.completeLegacyRestTurn(ctx, {
content: 'a prompt that never returns',
});
// No agent_end, prompt still pending: only the 120s timeout can end the turn. Promise.all
// installed a handler on `done` synchronously, so the timer bounds the turn while prompt hangs.
await vi.advanceTimersByTimeAsync(200_000);
const result = await resultPromise;
expect(result).toEqual({ ok: false, code: 'timeout', retryable: true });
// The single idempotent dispose ran on the timeout path: listener detached exactly once.
expect(detach).toHaveBeenCalledTimes(1);
// Advancing far past the deadline fires nothing more: dispose cleared the timer.
vi.advanceTimersByTime(600_000);
expect(detach).toHaveBeenCalledTimes(1);
} finally {
vi.useRealTimers();
}
await new Promise((resolve) => setTimeout(resolve, 0));
process.off('unhandledRejection', onUnhandled);
expect(unhandled).toHaveLength(0);
});
it('when the 120s timeout fires while prompt() is still pending, returns timeout with one teardown, and a later prompt rejection surfaces no unhandledRejection (Task 5 finding 6 — timeout/prompt race)', async () => {
const session = makeAgentSession(USER_A);
const detach = vi.fn();
let rejectPrompt: (reason: unknown) => void = () => undefined;
const prompting = new Promise<void>((_resolve, reject) => {
rejectPrompt = reject;
});
const svc = {
getSession: vi.fn(() => session),
createSession: vi.fn(),
onEvent: vi.fn(() => detach),
addChannel: vi.fn(),
removeChannel: vi.fn(),
prompt: vi.fn(() => prompting),
recordTokenUsage: vi.fn(),
};
const runtime = new EmbeddedChatRuntime(svc as never);
const unhandled: unknown[] = [];
const onUnhandled = (reason: unknown): void => {
unhandled.push(reason);
};
process.on('unhandledRejection', onUnhandled);
vi.useFakeTimers();
try {
const resultPromise = runtime.completeLegacyRestTurn(ctx, {
content: 'prompt settles after the deadline',
});
// The timeout wins the race while prompt is still pending.
await vi.advanceTimersByTimeAsync(200_000);
const result = await resultPromise;
expect(result).toEqual({ ok: false, code: 'timeout', retryable: true });
expect(detach).toHaveBeenCalledTimes(1);
// The prompt now rejects LATE — after the turn already returned its timeout result. Because
// Promise.all installed a rejection handler on `prompting` synchronously (the fix), this late
// rejection is already observed and must not escape as an unhandledRejection.
rejectPrompt(new Error('late backend failure'));
} finally {
vi.useRealTimers();
}
await new Promise((resolve) => setTimeout(resolve, 0));
process.off('unhandledRejection', onUnhandled);
expect(unhandled).toHaveLength(0);
});
});