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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| /** | ||
| * @vitest-environment node-websocket | ||
| */ | ||
| import { ws } from 'msw' | ||
| import { setupServer } from 'msw/node' | ||
| import { WebSocketServer } from '../../support/WebSocketServer' | ||
| import { waitFor } from '../../support/waitFor' | ||
|
|
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| const server = setupServer() | ||
| const wsServer = new WebSocketServer() | ||
|
|
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| const service = ws.link('ws://*') | ||
|
|
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| beforeAll(async () => { | ||
| server.listen() | ||
| await wsServer.listen() | ||
| }) | ||
|
|
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| afterEach(() => { | ||
| wsServer.closeAllClients() | ||
| wsServer.removeAllListeners() | ||
| }) | ||
|
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| afterAll(async () => { | ||
| server.close() | ||
| await wsServer.close() | ||
| }) | ||
|
|
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| it('intercepts outgoing client text message', async () => { | ||
| const mockMessageListener = vi.fn() | ||
| const realConnectionListener = vi.fn() | ||
|
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| server.use( | ||
| service.on('connection', ({ client }) => { | ||
| client.addEventListener('message', mockMessageListener) | ||
| }), | ||
| ) | ||
| wsServer.on('connection', realConnectionListener) | ||
|
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| const ws = new WebSocket(wsServer.url) | ||
| ws.onopen = () => ws.send('hello') | ||
|
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| await waitFor(() => { | ||
| // Must intercept the outgoing client message event. | ||
| expect(mockMessageListener).toHaveBeenCalledTimes(1) | ||
|
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| const messageEvent = mockMessageListener.mock.calls[0][0] as MessageEvent | ||
| expect(messageEvent.type).toBe('message') | ||
| expect(messageEvent.data).toBe('hello') | ||
| expect(messageEvent.target).toBe(ws) | ||
|
|
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| // Must not connect to the actual server by default. | ||
| expect(realConnectionListener).not.toHaveBeenCalled() | ||
| }) | ||
| }) | ||
|
|
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| it('intercepts outgoing client Blob message', async () => { | ||
| const mockMessageListener = vi.fn() | ||
| const realConnectionListener = vi.fn() | ||
|
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| server.use( | ||
| service.on('connection', ({ client }) => { | ||
| client.addEventListener('message', mockMessageListener) | ||
| }), | ||
| ) | ||
| wsServer.on('connection', realConnectionListener) | ||
|
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| const ws = new WebSocket(wsServer.url) | ||
| ws.onopen = () => ws.send(new Blob(['hello'])) | ||
|
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| await waitFor(() => { | ||
| expect(mockMessageListener).toHaveBeenCalledTimes(1) | ||
|
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| const messageEvent = mockMessageListener.mock.calls[0][0] as MessageEvent | ||
| expect(messageEvent.type).toBe('message') | ||
| expect(messageEvent.data.size).toBe(5) | ||
| expect(messageEvent.target).toEqual(ws) | ||
|
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| // Must not connect to the actual server by default. | ||
| expect(realConnectionListener).not.toHaveBeenCalled() | ||
| }) | ||
| }) | ||
|
|
||
| it('intercepts outgoing client ArrayBuffer data', async () => { | ||
| const mockMessageListener = vi.fn() | ||
| const realConnectionListener = vi.fn() | ||
|
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| server.use( | ||
| service.on('connection', ({ client }) => { | ||
| client.addEventListener('message', mockMessageListener) | ||
| }), | ||
| ) | ||
| wsServer.on('connection', realConnectionListener) | ||
|
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| const ws = new WebSocket(wsServer.url) | ||
| ws.onopen = () => ws.send(new TextEncoder().encode('hello')) | ||
|
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| await waitFor(() => { | ||
| expect(mockMessageListener).toHaveBeenCalledTimes(1) | ||
|
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| const messageEvent = mockMessageListener.mock.calls[0][0] as MessageEvent | ||
| expect(messageEvent.type).toBe('message') | ||
| expect(messageEvent.data).toEqual(new TextEncoder().encode('hello')) | ||
| expect(messageEvent.target).toEqual(ws) | ||
|
|
||
| // Must not connect to the actual server by default. | ||
| expect(realConnectionListener).not.toHaveBeenCalled() | ||
| }) | ||
| }) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,55 @@ | ||
| import { invariant } from 'outvariant' | ||
| import { Emitter } from 'strict-event-emitter' | ||
| import fastify, { FastifyInstance } from 'fastify' | ||
| import fastifyWebSocket, { SocketStream } from '@fastify/websocket' | ||
|
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| type FastifySocket = SocketStream['socket'] | ||
|
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| type WebSocketEventMap = { | ||
| connection: [client: FastifySocket] | ||
| } | ||
|
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| export class WebSocketServer extends Emitter<WebSocketEventMap> { | ||
| private _url?: string | ||
| private app: FastifyInstance | ||
| private clients: Set<FastifySocket> | ||
|
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| constructor() { | ||
| super() | ||
| this.clients = new Set() | ||
|
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| this.app = fastify() | ||
| this.app.register(fastifyWebSocket) | ||
| this.app.register(async (fastify) => { | ||
| fastify.get('/', { websocket: true }, (connection) => { | ||
| this.clients.add(connection.socket) | ||
| this.emit('connection', connection.socket) | ||
| }) | ||
| }) | ||
| } | ||
|
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| get url(): string { | ||
| invariant( | ||
| this._url, | ||
| 'Failed to get "url" on WebSocketServer: server is not running. Did you forget to "await server.listen()"?', | ||
| ) | ||
| return this._url | ||
| } | ||
|
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| public async listen(): Promise<void> { | ||
| const address = await this.app.listen({ port: 0 }) | ||
| const url = new URL(address) | ||
| url.protocol = url.protocol.replace(/^http/, 'ws') | ||
| this._url = url.href | ||
| } | ||
|
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| public closeAllClients(): void { | ||
| this.clients.forEach((client) => { | ||
| client.close() | ||
| }) | ||
| } | ||
|
|
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| public async close(): Promise<void> { | ||
| return this.app.close() | ||
| } | ||
| } |
20 changes: 20 additions & 0 deletions
20
test/support/environments/vitest-environment-node-websocket.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| /** | ||
| * Node.js environment superset that has a global WebSocket API. | ||
| */ | ||
| import type { Environment } from 'vitest' | ||
| import { builtinEnvironments } from 'vitest/environments' | ||
| import { WebSocket } from 'undici' | ||
|
|
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| export default <Environment>{ | ||
| name: 'node-with-websocket', | ||
| transformMode: 'ssr', | ||
| async setup(global, options) { | ||
| const { teardown } = await builtinEnvironments.jsdom.setup(global, options) | ||
|
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| Reflect.set(globalThis, 'WebSocket', WebSocket) | ||
|
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| return { | ||
| teardown, | ||
| } | ||
| }, | ||
| } |