});

async function createRealtimeServer(params?: {

closeOnConnection?: boolean;

initialEvent?: unknown;

onBinary?: (payload: Buffer) => void;

onText?: (payload: unknown) => void;

wss.handleUpgrade(request, socket, head, (ws) => {

clients.add(ws);

ws.on("close", () => clients.delete(ws));

if (params?.closeOnConnection) {

ws.close(1011, "setup failed");

return;

}

if (params?.initialEvent) {

ws.send(JSON.stringify(params.initialEvent));

}

expect(session.isConnected()).toBe(false);

expect(onError).toHaveBeenCalledWith(expect.any(Error));

});

it("reports pre-ready closes separately from connection timeouts", async () => {

const server = await createRealtimeServer({ closeOnConnection: true });

const onError = vi.fn();

const session = createRealtimeTranscriptionWebSocketSession({

providerId: "test",

callbacks: { onError },

url: server.url,

connectTimeoutMessage: "test realtime transcription connection timeout",

connectClosedBeforeReadyMessage: "test realtime transcription connection closed before ready",

sendAudio: (audio, transport) => {

transport.sendBinary(audio);

},

});

await expect(session.connect()).rejects.toThrow(

"test realtime transcription connection closed before ready",

);

expect(onError).toHaveBeenCalledWith(expect.any(Error));

expect(onError.mock.calls[0]?.[0]).toMatchObject({

message: "test realtime transcription connection closed before ready",

});

});

});