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import { renderHook } from "@testing-library/react";
import useAudioPlayer from "../useAudioPlayer";
// We don't need to duplicate the MockAudioBuffer class here as it's already in setupTests.ts
describe("useAudioPlayer", () => {
// Mock bufferSource for specific test needs
const mockBufferSource = {
connect: jest.fn(),
start: jest.fn(),
};
// Store the original implementation
const originalCreateBufferSource =
global.AudioContext.prototype.createBufferSource;
// Create a reusable audio buffer
let audioBuffer: AudioBuffer;
let shortAudioBuffer: AudioBuffer;
beforeAll(() => {
// Override the createBufferSource method for this test suite
global.AudioContext.prototype.createBufferSource = jest
.fn()
.mockReturnValue(mockBufferSource);
// Create the reusable audio buffers using the globally mocked AudioBuffer
audioBuffer = new AudioBuffer({
length: 40000,
sampleRate: 44100,
numberOfChannels: 1,
});
shortAudioBuffer = new AudioBuffer({
length: 100,
sampleRate: 44100,
numberOfChannels: 1,
});
});
afterAll(() => {
// Restore the original implementation after tests
global.AudioContext.prototype.createBufferSource =
originalCreateBufferSource;
});
beforeEach(() => {
// Reset all mocks before each test
jest.clearAllMocks();
});
test("plays audio chunks", () => {
const { result } = renderHook(() => useAudioPlayer());
result.current.play(audioBuffer);
expect(mockBufferSource.start).toHaveBeenCalled();
});
test("doesn't start playing audio chunks until the existing chunks are long enough", () => {
const { result } = renderHook(() => useAudioPlayer());
result.current.play(shortAudioBuffer);
expect(mockBufferSource.start).not.toHaveBeenCalled();
// Add many chunks of audio, which makes the total buffered audio long enough to start
for (let i = 0; i < 1000; i++) {
result.current.play(shortAudioBuffer);
}
expect(mockBufferSource.start).toHaveBeenCalled();
});
});
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