Files
deepseek-harness/packages/api/gateway/tests/client.spec.ts
T

728 lines
31 KiB
TypeScript

import { Context, Service } from '@deepseek-ai/cordis'
import type { Fiber } from '@deepseek-ai/cordis'
import { describe, expect, expectTypeOf, it, vi } from 'vitest'
import { z } from 'zod'
import type { ConnectionHandle } from '@deepseek-ai/dsh-client-connection/client'
import type {
InvocationDescriptor,
TypeRTClientRemote,
TypeRTContext,
TypeRTRemoteScopeApi,
TypeRTRemoteNamespace,
} from '@deepseek-ai/dsh-type-meta'
import TypertRegistry from '@deepseek-ai/dsh-typert-registry'
import type { ClientRemote } from '../src/client/index.ts'
import { apply, inject } from '../src/client/index.ts'
declare module '@deepseek-ai/cordis' {
interface Events {
/**
* Test-only forwarded Host event.
* @param namespace - marker payload recorded by listeners.
*/
'fixture/changed'(namespace: string): void
/**
* Test-only forwarded Host event nobody subscribes to.
* @param count - marker payload never observed.
*/
'fixture/idle'(count: number): void
/**
* Test-only event the Host assembly does not forward.
* @param flag - marker payload never delivered.
*/
'fixture/unselected'(flag: boolean): void
}
}
declare module '@deepseek-ai/dsh-type-meta' {
interface TypeRTRemoteEventSelection extends Record<'fixture/changed' | 'fixture/idle', true> {}
interface TypeRTContextMap {
fixture: TypeRTContext<string>
}
interface TypeRTRemoteMap {
'goals/create': (
agentId: string,
request: { readonly objective: string },
signal?: AbortSignal,
) => Promise<{ readonly ref: string }>
}
interface TypeRTRemoteScopeMap {
'fixture:goals/create': (
request: { readonly objective: string },
signal?: AbortSignal,
) => Promise<{ readonly ref: string }>
'fixture:goals/rename': (request: { readonly objective: string }) => Promise<{ readonly renamed: boolean }>
}
interface TypeRTRemoteNamespaceMap {
goals: TypeRTRemoteNamespace<'goals'>
}
}
type FixtureContext = Omit<Context, 'remote'> & {
readonly remote: TypeRTClientRemote & TypeRTRemoteScopeApi<'fixture'>
}
// Compile-time contract of `$on`: the key face is the forwarding selection and
// the listener signature is the owning package's own Cordis declaration.
function remoteEventContracts(remote: ClientRemote): void {
remote.$on('fixture/changed', (namespace) => { void namespace })
// @ts-expect-error -- declared in Events but outside the forwarding selection.
remote.$on('fixture/unselected', () => {})
// @ts-expect-error -- not declared in Events at all.
remote.$on('fixture/absent', () => {})
// @ts-expect-error -- the listener signature comes from the event declaration.
remote.$on('fixture/changed', (count: number) => { void count })
}
void remoteEventContracts
const idSchema = z.string().min(1)
const requestSchema = z.object({ objective: z.string().min(1) })
const createResultSchema = z.object({ ref: z.string().min(1) })
const renameResultSchema = z.object({ renamed: z.boolean() })
function directDescriptor(): InvocationDescriptor {
return {
id: '@fixture/goals#goals/create',
service: 'goals',
namespace: 'goals',
method: 'create',
invocation: { kind: 'direct' },
scope: { context: 'fixture', wire: 'agentId' },
parameters: [{
name: 'agent',
wire: 'agentId',
source: 'lookup',
lookup: 'fixture',
codec: { mode: 'strict', typeSymbol: '@fixture#AgentId', schema: idSchema },
}, {
name: 'request',
wire: 'request',
source: 'json',
codec: { mode: 'strict', typeSymbol: '@fixture#CreateRequest', schema: requestSchema },
}],
cancellation: { parameter: 'signal' },
result: { mode: 'strict', typeSymbol: '@fixture#CreateResult', schema: createResultSchema },
}
}
function contextDescriptor(): InvocationDescriptor {
return {
id: '@fixture/goals#goals/rename',
service: 'goals',
namespace: 'goals',
method: 'rename',
invocation: {
kind: 'context',
context: 'fixture',
wire: 'agentId',
codec: { mode: 'strict', typeSymbol: '@fixture#AgentId', schema: idSchema },
},
parameters: [{
name: 'request',
wire: 'request',
source: 'json',
codec: { mode: 'strict', typeSymbol: '@fixture#RenameRequest', schema: requestSchema },
}],
result: { mode: 'strict', typeSymbol: '@fixture#RenameResult', schema: renameResultSchema },
}
}
async function bench(call: ConnectionHandle['rpc']['call']): Promise<Context> {
const { ctx } = await benchFiber(call)
return ctx
}
async function benchFiber(
call: ConnectionHandle['rpc']['call'],
): Promise<{ readonly ctx: Context; readonly client: Fiber }> {
const ctx = new Context()
await ctx.plugin(TypertRegistry)
ctx.provide('connection', { rpc: { call } } as unknown as ConnectionHandle)
const client = ctx.plugin({ inject, apply })
await client
return { ctx, client }
}
describe('Client TypeRT API', () => {
it('mounts concrete direct methods, validates both boundaries, and withdraws retained handles', async () => {
const call = vi.fn<ConnectionHandle['rpc']['call']>()
.mockResolvedValue({ ok: true, value: { ref: 'goal-1' } })
const ctx = await bench(call)
const businessGoals = { owner: 'host business service' }
const disposeBusinessGoals = ctx.provide('goals', businessGoals)
const assembly = ctx.plugin(Object.assign(
(scope: Context) => scope.remote.$mount({ package: '@fixture/goals', descriptors: [directDescriptor()] }),
{ inject: ['remote'] },
))
await assembly
const retained = ctx.remote.goals.create
await expect(ctx.remote.goals.create('agent-1', { objective: 'ship' })).resolves.toEqual({ ref: 'goal-1' })
expect(call).toHaveBeenCalledWith(
'/api',
'goals/create',
{ args: { agentId: 'agent-1', request: { objective: 'ship' } } },
expect.any(AbortSignal),
)
const callerAbort = new AbortController()
await expect(ctx.remote.goals.create(
'agent-1',
{ objective: 'cancel me' },
callerAbort.signal,
)).resolves.toEqual({ ref: 'goal-1' })
const combinedSignal = call.mock.calls.at(-1)?.[3]
expect(combinedSignal).toBeInstanceOf(AbortSignal)
expect(combinedSignal).not.toBe(callerAbort.signal)
const cancellation = new Error('caller cancelled')
callerAbort.abort(cancellation)
expect(combinedSignal?.aborted).toBe(true)
expect(combinedSignal?.reason).toBe(cancellation)
await expect(ctx.remote.goals.create('', { objective: 'ship' })).rejects.toThrow('rejected "agentId"')
call.mockResolvedValueOnce({ ok: true, value: { ref: 1 } })
await expect(ctx.remote.goals.create('agent-1', { objective: 'ship' })).rejects.toThrow('rejected "result"')
await assembly.dispose()
expect((ctx.remote as unknown as Record<string, unknown>).goals).toBeUndefined()
expect(ctx.get('remote.goals')).toBeUndefined()
expect(ctx.get('goals')).toBe(businessGoals)
expect(ctx.typert.remotes.list()).toEqual([])
await expect(retained?.('agent-1', { objective: 'ship' })).rejects.toThrow('no longer mounted')
disposeBusinessGoals()
})
it('projects one direct lookup descriptor onto an Agent-scoped alias', async () => {
const call = vi.fn<ConnectionHandle['rpc']['call']>()
.mockResolvedValue({ ok: true, value: { ref: 'goal-2' } })
const ctx = await bench(call)
const agentCtx = ctx.extend({ fixtureId: 'agent-2' }) as FixtureContext
ctx.typert.contexts.registerClient('fixture', {
identity: candidate => (candidate as Context & { fixtureId?: string }).fixtureId,
})
const assembly = ctx.plugin(Object.assign(
(scope: Context) => scope.remote.$mount({ package: '@fixture/goals', descriptors: [directDescriptor()] }),
{ inject: ['remote'] },
))
await assembly
await expect(agentCtx.remote.goals.create({ objective: 'ship scoped' })).resolves.toEqual({ ref: 'goal-2' })
expect(call).toHaveBeenCalledWith(
'/api',
'goals/create',
{ args: { agentId: 'agent-2', request: { objective: 'ship scoped' } } },
expect.any(AbortSignal),
)
await expect((ctx as FixtureContext).remote.goals.create({ objective: 'wrong scope' }))
.rejects.toThrow('expected 2 business argument(s)')
await assembly.dispose()
expect((ctx.remote as unknown as Record<string, unknown>).goals).toBeUndefined()
expect(ctx.get('remote.goals')).toBeUndefined()
})
it('uses the caller Context identity for scoped namespace methods', async () => {
const call = vi.fn<ConnectionHandle['rpc']['call']>()
.mockResolvedValue({ ok: true, value: { renamed: true } })
const ctx = await bench(call)
const agentCtx = ctx.extend({ fixtureId: 'agent-2' }) as FixtureContext
ctx.typert.contexts.registerClient('fixture', {
identity: candidate => (candidate as Context & { fixtureId?: string }).fixtureId,
})
const assembly = ctx.plugin(Object.assign(
(scope: Context) => scope.remote.$mount({ package: '@fixture/goals', descriptors: [contextDescriptor()] }),
{ inject: ['remote'] },
))
await assembly
await expect(agentCtx.remote.goals.rename({ objective: 'land' })).resolves.toEqual({ renamed: true })
expect(call).toHaveBeenCalledWith(
'/api',
'goals/rename',
{ args: { agentId: 'agent-2', request: { objective: 'land' } } },
expect.any(AbortSignal),
)
await expect((ctx as FixtureContext).remote.goals.rename({ objective: 'land' }))
.rejects.toThrow('requires a "fixture" Context')
await assembly.dispose()
expect(ctx.get('remote.goals')).toBeUndefined()
})
it('rejects weak descriptors and namespace collisions before registration', async () => {
const ctx = await bench(vi.fn<ConnectionHandle['rpc']['call']>())
const weak: InvocationDescriptor = {
...directDescriptor(),
result: { mode: 'src-json' },
}
await expect(ctx.remote.$mount({ package: '@fixture/weak', descriptors: [weak] }))
.rejects.toThrow('has no strict codec')
await expect(ctx.remote.$mount({
package: '@fixture/conflict',
descriptors: [{ ...directDescriptor(), namespace: '$mount' }],
})).rejects.toThrow('conflicts with the Remote service')
expect(ctx.typert.remotes.list()).toEqual([])
})
it('rejects duplicate, live, scoped-service, and Context namespace collisions', async () => {
const call = vi.fn<ConnectionHandle['rpc']['call']>()
.mockResolvedValue({ ok: true, value: { renamed: true } })
const ctx = await bench(call)
const agentCtx = ctx.extend({ fixtureId: 'agent-remounted' }) as FixtureContext
ctx.typert.contexts.registerClient('fixture', {
identity: candidate => (candidate as Context & { fixtureId?: string }).fixtureId,
})
const direct = directDescriptor()
const context = contextDescriptor()
await expect(ctx.remote.$mount({
package: '@fixture/direct-duplicates',
descriptors: [direct, { ...direct, id: '@fixture/goals#goals/create-again' }],
})).rejects.toThrow('repeats direct method')
await expect(ctx.remote.$mount({
package: '@fixture/scoped-duplicates',
descriptors: [context, { ...context, id: '@fixture/goals#goals/rename-again' }],
})).rejects.toThrow('repeats scoped method')
const disposeDirect = await ctx.remote.$mount({ package: '@fixture/direct-live', descriptors: [direct] })
await expect(ctx.remote.$mount({
package: '@fixture/direct-conflict', descriptors: [{ ...direct, id: '@fixture/other#goals/create' }],
})).rejects.toThrow('direct method goals/create is already mounted')
await disposeDirect()
const disposeScoped = await ctx.remote.$mount({ package: '@fixture/scoped-live', descriptors: [context] })
await expect(ctx.remote.$mount({
package: '@fixture/scoped-conflict', descriptors: [{ ...context, id: '@fixture/other#goals/rename' }],
})).rejects.toThrow('scoped method goals/rename is already mounted')
await expect(ctx.remote.$mount({
package: '@fixture/service-method-conflict',
descriptors: [{ ...context, id: '@fixture/goals#goals/remove', method: 'remove' }],
})).rejects.toThrow('conflicts with its namespace service')
const scopedService = ctx.get('remote.goals') as unknown as object
Object.defineProperty(scopedService, 'custom', { configurable: true, value: () => undefined })
await expect(ctx.remote.$mount({
package: '@fixture/service-own-property-conflict',
descriptors: [{ ...direct, id: '@fixture/goals#goals/custom', method: 'custom' }],
})).rejects.toThrow('conflicts with its namespace service')
Reflect.deleteProperty(scopedService, 'custom')
await disposeScoped()
const disposeRemoteTypert = ctx.reflect.provide('remote.typert', { owner: 'fixture' })
await expect(ctx.remote.$mount({
package: '@fixture/context-property-conflict',
descriptors: [{ ...context, namespace: 'typert' }],
})).rejects.toThrow('conflicts with an existing Remote namespace')
await disposeRemoteTypert()
const disposeMultipleScoped = await ctx.remote.$mount({
package: '@fixture/multiple-scoped',
descriptors: [directDescriptor(), contextDescriptor()],
})
await expect(agentCtx.remote.goals.rename({ objective: 'remounted' })).resolves.toEqual({ renamed: true })
expect(call).toHaveBeenLastCalledWith(
'/api',
'goals/rename',
{ args: { agentId: 'agent-remounted', request: { objective: 'remounted' } } },
expect.any(AbortSignal),
)
await disposeMultipleScoped()
})
it('rolls back earlier descriptors when a later descriptor fails to install', async () => {
const ctx = await bench(vi.fn<ConnectionHandle['rpc']['call']>())
const { scope: _scope, ...first } = directDescriptor()
const second: InvocationDescriptor = {
...first,
id: '@fixture/goals#goals/archive',
method: 'archive',
}
const defineProperty = Object.defineProperty
const spy = vi.spyOn(Object, 'defineProperty').mockImplementation((target, key, attributes) => {
if (key === 'archive') throw new Error('fixture later-descriptor failure')
return defineProperty(target, key, attributes)
})
try {
await expect(ctx.remote.$mount({ package: '@fixture/failing-batch', descriptors: [first, second] }))
.rejects.toThrow('fixture later-descriptor failure')
} finally {
spy.mockRestore()
}
expect((ctx.remote as unknown as Record<string, unknown>).goals).toBeUndefined()
await vi.waitFor(() => { expect(ctx.typert.remotes.list()).toEqual([]) })
const retry = await ctx.remote.$mount({ package: '@fixture/retry-batch', descriptors: [first, second] })
expect(ctx.remote.goals.create).toBeTypeOf('function')
expect((ctx.remote.goals as unknown as Record<string, unknown>).archive).toBeTypeOf('function')
await retry()
})
it('rolls back a direct projection when its scoped projection fails to install', async () => {
const ctx = await bench(vi.fn<ConnectionHandle['rpc']['call']>())
const disposeContext = await ctx.remote.$mount({
package: '@fixture/context-anchor',
descriptors: [contextDescriptor()],
})
const namespace = ctx.get('remote.goals') as unknown as {
installScoped: (...args: unknown[]) => void
readonly create?: unknown
}
const installScoped = vi.spyOn(namespace, 'installScoped').mockImplementation(() => {
throw new Error('fixture scoped projection failure')
})
try {
await expect(ctx.remote.$mount({
package: '@fixture/direct-projection-failure',
descriptors: [directDescriptor()],
})).rejects.toThrow('fixture scoped projection failure')
} finally {
installScoped.mockRestore()
}
expect(namespace.create).toBeUndefined()
await disposeContext()
})
it('rejects weak parameter and Context codecs plus malformed scope projections', async () => {
const ctx = await bench(vi.fn<ConnectionHandle['rpc']['call']>())
const direct = directDescriptor()
const context = contextDescriptor()
await expect(ctx.remote.$mount({
package: '@fixture/weak-parameter',
descriptors: [{
...direct,
parameters: direct.parameters.map((parameter, index) => index === 0
? { ...parameter, codec: { mode: 'src-json' } }
: parameter),
}],
})).rejects.toThrow('has no strict codec')
await expect(ctx.remote.$mount({
package: '@fixture/weak-context',
descriptors: [{
...context,
invocation: { ...context.invocation, codec: { mode: 'src-json' } },
} as InvocationDescriptor],
})).rejects.toThrow('has no strict codec')
await expect(ctx.remote.$mount({
package: '@fixture/malformed-scope',
descriptors: [{ ...direct, scope: { context: 'fixture', wire: 'missingId' } }],
})).rejects.toThrow('scope must select its only lookup parameter')
await expect(ctx.remote.$mount({
package: '@fixture/ambiguous-scope',
descriptors: [{
...direct,
parameters: [...direct.parameters, {
name: 'other', wire: 'otherId', source: 'lookup', lookup: 'fixture',
codec: { mode: 'strict', typeSymbol: '@fixture#AgentId', schema: idSchema },
}],
}],
})).rejects.toThrow('scope must select its only lookup parameter')
})
it('validates invocation arity, required binders, live Connection, and mutable descriptor codecs', async () => {
const call = vi.fn<ConnectionHandle['rpc']['call']>()
.mockResolvedValue({ ok: true, value: { ref: 'goal-1' } })
const ctx = await bench(call)
const descriptor = directDescriptor()
const dispose = await ctx.remote.$mount({
package: '@fixture/goals',
descriptors: [descriptor, contextDescriptor()],
})
const create = ctx.remote.goals.create as unknown as (...args: unknown[]) => Promise<unknown>
const goals = (ctx as FixtureContext).remote.goals
const rename = goals.rename as unknown as (...args: unknown[]) => Promise<unknown>
await expect(create('agent-1')).rejects.toThrow('expected 2 business argument(s) plus an optional AbortSignal, got 1')
await expect(create('agent-1', { objective: 'ship' }, undefined, 'extra'))
.rejects.toThrow('got 4')
await expect(rename.call(goals)).rejects.toThrow('expected 1 argument(s), got 0')
await expect((ctx as FixtureContext).remote.goals.create({ objective: 'ship' }))
.rejects.toThrow('expected 2 business argument(s)')
await expect((ctx as FixtureContext).remote.goals.rename({ objective: 'ship' }))
.rejects.toThrow('no Client Context binder')
;(descriptor.parameters[0] as { codec: { mode: string } }).codec.mode = 'src-json'
await expect(ctx.remote.goals.create('agent-1', { objective: 'ship' })).rejects.toThrow('has no strict codec')
;(descriptor.parameters[0] as { codec: { mode: string } }).codec.mode = 'strict'
ctx.set('connection', undefined)
await expect(ctx.remote.goals.create('agent-1', { objective: 'ship' })).rejects.toThrow('no active Connection')
await dispose()
})
it('withdraws a pending invocation and preserves a direct namespace until its last method leaves', async () => {
let resolveCall!: (result: Awaited<ReturnType<ConnectionHandle['rpc']['call']>>) => void
const pending = new Promise<Awaited<ReturnType<ConnectionHandle['rpc']['call']>>>((resolve) => {
resolveCall = resolve
})
const call = vi.fn<ConnectionHandle['rpc']['call']>().mockReturnValue(pending)
const ctx = await bench(call)
const { scope: _scope, ...first } = directDescriptor()
const second: InvocationDescriptor = {
...first,
id: '@fixture/goals#goals/archive',
method: 'archive',
}
const dispose = await ctx.remote.$mount({ package: '@fixture/goals', descriptors: [first, second] })
const invocation = ctx.remote.goals.create('agent-1', { objective: 'ship' })
await vi.waitFor(() => { expect(call).toHaveBeenCalledTimes(1) })
await dispose()
resolveCall({ ok: true, value: { ref: 'goal-1' } })
await expect(invocation).rejects.toThrow('withdrawn during invocation')
expect((ctx.remote as unknown as Record<string, unknown>).goals).toBeUndefined()
})
it('fails a method obtained from a withdrawn namespace getter', async () => {
const ctx = await bench(vi.fn<ConnectionHandle['rpc']['call']>())
const dispose = await ctx.remote.$mount({ package: '@fixture/goals', descriptors: [directDescriptor()] })
const namespace = ctx.get('remote.goals') as unknown as object
const getWithdrawn = Object.getOwnPropertyDescriptor(namespace, 'create')?.get?.bind(namespace)
await dispose()
expect(getWithdrawn).toBeTypeOf('function')
const withdrawn = getWithdrawn?.() as (...args: unknown[]) => Promise<unknown>
expect(() => withdrawn('agent-1', { objective: 'ship' }))
.toThrow('Remote method is no longer mounted')
})
it('preserves a __proto__ wire parameter as an own named argument', async () => {
const call = vi.fn<ConnectionHandle['rpc']['call']>()
.mockResolvedValue({ ok: true, value: { ref: 'goal-1' } })
const ctx = await bench(call)
const { scope: _scope, ...base } = directDescriptor()
const descriptor: InvocationDescriptor = {
...base,
id: '@fixture/goals#goals/prototype',
method: 'prototype',
parameters: [{
name: 'value',
wire: '__proto__',
source: 'json',
codec: { mode: 'strict', typeSymbol: '@fixture#PrototypeValue', schema: z.string() },
}],
}
const dispose = await ctx.remote.$mount({ package: '@fixture/prototype', descriptors: [descriptor] })
const method = (ctx.remote.goals as unknown as Record<string, (...args: unknown[]) => Promise<unknown>>).prototype
await expect(method?.('wire-value')).resolves.toEqual({ ref: 'goal-1' })
const payload = call.mock.calls[0]?.[2] as { readonly args: Record<string, unknown> }
expect(Object.getPrototypeOf(payload.args)).toBeNull()
expect(Object.hasOwn(payload.args, '__proto__')).toBe(true)
expect(payload.args.__proto__).toBe('wire-value')
await dispose()
})
it('rolls back Remote registration when namespace Service startup fails', async () => {
const ctx = await bench(vi.fn<ConnectionHandle['rpc']['call']>())
const defineProperty = Object.defineProperty
const spy = vi.spyOn(Object, 'defineProperty').mockImplementation((target, key, attributes) => {
if (key === Service.tracker) throw new Error('fixture namespace startup failure')
return defineProperty(target, key, attributes)
})
try {
await expect(ctx.remote.$mount({ package: '@fixture/goals', descriptors: [directDescriptor()] }))
.rejects.toThrow('fixture namespace startup failure')
await vi.waitFor(() => { expect(ctx.typert.remotes.list()).toEqual([]) })
} finally {
spy.mockRestore()
}
const retry = await ctx.remote.$mount({ package: '@fixture/goals-retry', descriptors: [directDescriptor()] })
expect(ctx.remote.goals.create).toBeTypeOf('function')
await retry()
})
it('withdraws a fresh direct namespace when its first method fails to install', async () => {
const ctx = await bench(vi.fn<ConnectionHandle['rpc']['call']>())
const defineProperty = Object.defineProperty
const spy = vi.spyOn(Object, 'defineProperty').mockImplementation((target, key, attributes) => {
if (key === 'create') throw new Error('fixture direct method installation failure')
return defineProperty(target, key, attributes)
})
try {
await expect(ctx.remote.$mount({
package: '@fixture/direct-method-failure',
descriptors: [directDescriptor()],
})).rejects.toThrow('fixture direct method installation failure')
} finally {
spy.mockRestore()
}
expect((ctx.remote as unknown as Record<string, unknown>).goals).toBeUndefined()
await vi.waitFor(() => { expect(ctx.typert.remotes.list()).toEqual([]) })
const retry = await ctx.remote.$mount({
package: '@fixture/direct-method-retry',
descriptors: [directDescriptor()],
})
expect(ctx.remote.goals.create).toBeTypeOf('function')
await retry()
})
it('withdraws a fresh scoped Service when its first method fails to install', async () => {
const ctx = await bench(vi.fn<ConnectionHandle['rpc']['call']>())
const defineProperty = Object.defineProperty
const spy = vi.spyOn(Object, 'defineProperty').mockImplementation((target, key, attributes) => {
if (key === 'rename') throw new Error('fixture scoped installation failure')
return defineProperty(target, key, attributes)
})
try {
await expect(ctx.remote.$mount({ package: '@fixture/scoped-failure', descriptors: [contextDescriptor()] }))
.rejects.toThrow('fixture scoped installation failure')
} finally {
spy.mockRestore()
}
expect(ctx.get('remote.goals')).toBeUndefined()
await vi.waitFor(() => { expect(ctx.typert.remotes.list()).toEqual([]) })
const retry = await ctx.remote.$mount({ package: '@fixture/scoped-retry', descriptors: [contextDescriptor()] })
expect((ctx.get('remote.goals') as unknown as Record<string, unknown>).rename).toBeTypeOf('function')
await retry()
})
it('unregisters an empty scoped namespace so another provider can claim its name', async () => {
const ctx = await bench(vi.fn<ConnectionHandle['rpc']['call']>())
const dispose = await ctx.remote.$mount({ package: '@fixture/scoped', descriptors: [contextDescriptor()] })
expect(ctx.get('remote.goals')).toBeDefined()
await dispose()
expect(ctx.get('remote.goals')).toBeUndefined()
const replacement = { owner: 'replacement' }
const disposeReplacement = ctx.reflect.provide('remote.goals', replacement)
expect(ctx.get('remote.goals')).toBe(replacement)
await disposeReplacement()
})
it('throws RPC failures with the structured error as its cause', async () => {
const rpcError = { code: 'internal' as const, message: 'host failed', details: {} }
const ctx = await bench(vi.fn<ConnectionHandle['rpc']['call']>().mockResolvedValue({ ok: false, error: rpcError }))
await ctx.remote.$mount({ package: '@fixture/goals', descriptors: [directDescriptor()] })
let failure: unknown
try {
await ctx.remote.goals.create('agent-1', { objective: 'ship' })
} catch (error) {
failure = error
}
expect(failure).toBeInstanceOf(Error)
if (!(failure instanceof Error)) throw new Error('expected Client API invocation to fail')
expect(failure.message).toContain('internal: host failed')
expect(failure.cause).toBe(rpcError)
})
it('owns each $on subscription in the calling fiber', async () => {
const { ctx, client } = await benchFiber(vi.fn<ConnectionHandle['rpc']['call']>())
const seen: string[] = []
const subscriber = ctx.plugin(Object.assign(
(scope: Context) => { scope.remote.$on('fixture/changed', (namespace) => { seen.push(namespace) }) },
{ inject: ['remote'] },
))
await subscriber
ctx.remote.$dispatch('fixture/changed', ['settings'])
expect(seen).toEqual(['settings'])
await subscriber.dispose()
ctx.remote.$dispatch('fixture/changed', ['after fiber disposal'])
expect(seen).toEqual(['settings'])
await client.dispose()
expect(ctx.get('remote')).toBeUndefined()
})
it('isolates a throwing listener from the rest of the same event', async () => {
const ctx = await bench(vi.fn<ConnectionHandle['rpc']['call']>())
const consoleError = vi.spyOn(console, 'error').mockImplementation(() => undefined)
const seen: string[] = []
const disposeFirst = ctx.remote.$on('fixture/changed', () => {
throw new Error('fixture listener failure')
})
ctx.remote.$on('fixture/changed', (namespace) => { seen.push(namespace) })
try {
ctx.remote.$dispatch('fixture/changed', ['credentials'])
expect(seen).toEqual(['credentials'])
expect(consoleError).toHaveBeenCalledWith(
'client api: Remote event "fixture/changed" listener threw:',
expect.any(Error),
)
disposeFirst()
ctx.remote.$dispatch('fixture/changed', ['commands'])
expect(seen).toEqual(['credentials', 'commands'])
expect(consoleError).toHaveBeenCalledTimes(1)
} finally {
consoleError.mockRestore()
}
})
it('contains an async listener whose promise rejects', async () => {
const ctx = await bench(vi.fn<ConnectionHandle['rpc']['call']>())
const consoleError = vi.spyOn(console, 'error').mockImplementation(() => undefined)
const seen: string[] = []
// The declared return is void, so nobody awaits an async listener: the
// rejection has to be contained here or it escapes as an unhandled one.
ctx.remote.$on('fixture/changed', () => Promise.reject(new Error('fixture async failure'))) // oxlint-disable-line typescript/no-misused-promises
ctx.remote.$on('fixture/changed', (namespace) => { seen.push(namespace) })
try {
ctx.remote.$dispatch('fixture/changed', ['credentials'])
await Promise.resolve()
await Promise.resolve()
expect(seen).toEqual(['credentials'])
expect(consoleError).toHaveBeenCalledWith(
'client api: Remote event "fixture/changed" listener threw:',
expect.any(Error),
)
} finally {
consoleError.mockRestore()
}
})
it('retires only its own registration when one listener subscribes twice', async () => {
const ctx = await bench(vi.fn<ConnectionHandle['rpc']['call']>())
const seen: string[] = []
// One function object, two registrations. A table keyed by listener identity
// stores it once, so the first frame would reach it once instead of twice
// and either disposer would silence both.
const listener = (namespace: string): void => { seen.push(namespace) }
const disposeFirst = ctx.remote.$on('fixture/changed', listener)
ctx.remote.$on('fixture/changed', listener)
ctx.remote.$dispatch('fixture/changed', ['both'])
expect(seen).toEqual(['both', 'both'])
// The surviving registration keeps receiving after its twin retires.
disposeFirst()
ctx.remote.$dispatch('fixture/changed', ['survivor'])
expect(seen).toEqual(['both', 'both', 'survivor'])
// Disposing twice is inert: the record is already gone, so the second call
// must not splice the surviving twin out from under its own owner.
disposeFirst()
ctx.remote.$dispatch('fixture/changed', ['still here'])
expect(seen).toEqual(['both', 'both', 'survivor', 'still here'])
})
it('separates the consumer verb from the carrier handoff', () => {
expectTypeOf<ClientRemote>().toHaveProperty('$on')
// The carrier owning the frame sink calls this; a consumer subscribes instead.
expectTypeOf<ClientRemote>().toHaveProperty('$dispatch')
})
it('drops a forwarded event nobody subscribes to', async () => {
const ctx = await bench(vi.fn<ConnectionHandle['rpc']['call']>())
const seen: string[] = []
ctx.remote.$on('fixture/changed', (namespace) => { seen.push(namespace) })
ctx.remote.$dispatch('fixture/idle', [1])
expect(seen).toEqual([])
})
})