stream.test.ts•4.29 kB
/*
* Copyright (C) 2025 by Fonoster Inc (https://fonoster.com)
* http://github.com/fonoster/fonoster
*
* This file is part of Fonoster
*
* Licensed under the MIT License (the "License");
* you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* https://opensource.org/licenses/MIT
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import {
StartStreamRequest,
StreamAudioFormat,
StreamDirection,
StreamMessageType
} from "@fonoster/common";
import * as chai from "chai";
import { expect } from "chai";
import chaiAsPromised from "chai-as-promised";
import { createSandbox, match } from "sinon";
import sinonChai from "sinon-chai";
import { getVoiceObject, sessionRef, voiceRequest } from "./helpers";
chai.use(chaiAsPromised);
chai.use(sinonChai);
const sandbox = createSandbox();
describe("@voice/verbs/stream", function () {
afterEach(function () {
return sandbox.restore();
});
it("should create an audio stream", async function () {
// Arrange
const { StartStream } = await import("../src/verbs/Stream");
const voice = getVoiceObject(sandbox, "startStreamResponse");
const startStream = new StartStream(voiceRequest, voice);
const startStreamRequest: StartStreamRequest = {
sessionRef,
direction: StreamDirection.IN,
format: StreamAudioFormat.WAV
};
// Act
await startStream.run(startStreamRequest);
// Assert
expect(voice.removeListener).to.have.been.calledOnce;
expect(voice.on).to.have.been.calledOnce;
expect(voice.on).to.have.been.calledWith("data", match.func);
expect(voice.write).to.have.been.calledOnce;
expect(voice.write).to.have.been.calledWith({
startStreamRequest
});
});
it("should allow streaming audio in and out", async function () {
// Arrange
const { VoiceResponse } = await import("../src/VoiceResponse");
const onStub = sandbox
.stub()
.onFirstCall()
.callsFake((_, cb) => {
cb({ content: "startStreamResponse" });
});
const voice = {
removeListener: sandbox.stub(),
on: onStub,
once: sandbox.stub(),
write: sandbox.stub(),
end: sandbox.stub()
};
const voiceResponse = new VoiceResponse(voiceRequest, voice);
const dummyCallback = sandbox.stub();
// Act
const stream = await voiceResponse.stream({
direction: StreamDirection.BOTH,
format: StreamAudioFormat.WAV
});
// This will be called twice
stream.onPayload(dummyCallback);
// First chunk in
stream.write({
sessionRef,
streamRef: "streamRef",
format: StreamAudioFormat.WAV,
type: StreamMessageType.AUDIO_IN,
data: Buffer.from("data")
});
// First chunk out
voice.on.yield({
streamPayload: {
type: StreamMessageType.AUDIO_OUT,
data: Buffer.from("data")
}
});
// Second chunk in
stream.write({
sessionRef,
streamRef: "streamRef",
format: StreamAudioFormat.WAV,
type: StreamMessageType.AUDIO_IN,
data: Buffer.from("data")
});
// Second chunk out
voice.on.yield({
streamPayload: {
type: StreamMessageType.AUDIO_OUT,
data: Buffer.from("data")
}
});
// Assert
expect(dummyCallback).to.have.been.calledTwice;
expect(dummyCallback).to.have.been.calledWith({
type: StreamMessageType.AUDIO_OUT,
data: Buffer.from("data")
});
expect(voice.write).to.have.been.calledThrice;
expect(voice.write).to.have.been.calledWith({
startStreamRequest: {
sessionRef,
direction: StreamDirection.BOTH,
format: StreamAudioFormat.WAV
}
});
expect(voice.write).to.have.been.calledWith({
streamPayload: {
sessionRef,
streamRef: "streamRef",
format: StreamAudioFormat.WAV,
type: StreamMessageType.AUDIO_IN,
data: Buffer.from("data")
}
});
});
});