const audioData = Buffer.from("ulaw-audio-data");

const fetchMock = vi.fn().mockResolvedValue(new Response(audioData, { status: 200 }));

vi.stubGlobal("fetch", fetchMock);

const synthesizeTelephony = provider.synthesizeTelephony;

if (!synthesizeTelephony) {

throw new Error("Expected Gradium provider synthesizeTelephony");

}

const result = await provider.synthesizeTelephony!({

const result = await synthesizeTelephony({

text: "Telephony test",

cfg: {} as never,

providerConfig: { apiKey: "gsk_test123", voiceId: "default-voice" },