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Original file line number | Diff line number | Diff line change |
---|---|---|
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/** | ||
* @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() | ||
}) | ||
}) | ||
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it('intercepts outgoing client ArrayBuffer 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 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) | ||
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// 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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/** | ||
* 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, | ||
} | ||
}, | ||
} |