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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
34 lines
1.2 KiB
TypeScript
34 lines
1.2 KiB
TypeScript
import { describe, expect, test, vi } from "vitest";
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import { extractPeaks } from "../../../utils/player/waveform.ts";
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import { calls, fail, route } from "../../fetch.ts";
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describe("extractPeaks", () => {
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test("decodes once per URL and takes each block's peak", async () => {
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const data = new Float32Array([0.1, -0.5, 0.2, 0.9, -0.3, 0.4]);
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const decode = vi.fn(() => Promise.resolve({ getChannelData: () => data }));
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const close = vi.fn();
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vi.stubGlobal(
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"AudioContext",
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class {
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decodeAudioData = decode;
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close = close;
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},
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);
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route("GET /api/files/:id", () => new Response(new Uint8Array([1, 2])));
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const peaks = await extractPeaks("http://localhost:8000/api/files/w1", 3);
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expect([...peaks].map((p) => +p.toFixed(2))).toEqual([0.5, 0.9, 0.4]);
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expect(close).toHaveBeenCalled();
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await extractPeaks("http://localhost:8000/api/files/w1", 3);
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expect(decode).toHaveBeenCalledTimes(1);
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expect(calls("GET /api/files/:id")).toHaveLength(1);
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});
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test("a failed fetch throws", async () => {
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route("GET /api/files/:id", () => fail("gone", 404));
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await expect(extractPeaks("http://localhost:8000/api/files/w2", 3)).rejects
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.toThrow(/404/);
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});
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});
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