feat(tools): 2.0 phase 5 wave 3b - audio depth (14 tools) (#222)

tests/integration/audio-speed.test.ts

@@ -0,0 +1,60 @@
+import { mkdtempSync, readFileSync, writeFileSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { ffmpegAvailable, probeMedia } from "@snapotter/media-engine";
+import { afterAll, beforeAll, describe, expect, it } from "vitest";
+import { buildTestApp, createMultipartPayload, loginAsAdmin, type TestApp } from "./test-server.js";
+
+const MP3 = readFileSync(join(__dirname, "..", "fixtures", "media", "tiny.mp3"));
+
+let testApp: TestApp;
+let adminToken: string;
+
+beforeAll(async () => {
+  testApp = await buildTestApp();
+  adminToken = await loginAsAdmin(testApp.app);
+}, 30_000);
+
+afterAll(async () => {
+  await testApp.cleanup();
+}, 10_000);
+
+async function runTool(settings: Record<string, unknown>) {
+  const { body, contentType } = createMultipartPayload([
+    { name: "file", filename: "tiny.mp3", contentType: "audio/mpeg", content: MP3 },
+    { name: "settings", content: JSON.stringify(settings) },
+  ]);
+  return testApp.app.inject({
+    method: "POST",
+    url: "/api/v1/tools/audio-speed",
+    headers: { authorization: `Bearer ${adminToken}`, "content-type": contentType },
+    body,
+  });
+}
+
+describe.skipIf(!ffmpegAvailable())("audio-speed (requires ffmpeg)", () => {
+  it("doubles speed and halves duration", async () => {
+    const res = await runTool({ factor: 2 });
+    expect(res.statusCode).toBe(200);
+    const envelope = JSON.parse(res.body);
+    expect(envelope.downloadUrl).toBeDefined();
+
+    const dl = await testApp.app.inject({ method: "GET", url: envelope.downloadUrl });
+    expect(dl.statusCode).toBe(200);
+
+    const tmpDir = mkdtempSync(join(tmpdir(), "aspeed-test-"));
+    const probeFile = join(tmpDir, "sped.mp3");
+    writeFileSync(probeFile, dl.rawPayload);
+    const info = await probeMedia(probeFile);
+
+    // tiny.mp3 is ~1.044s; at 2x speed output should be ~0.522s (within 25%)
+    const expected = 1.044 / 2;
+    expect(info.durationS).toBeGreaterThan(expected * 0.75);
+    expect(info.durationS).toBeLessThan(expected * 1.25);
+  }, 60_000);
+
+  it("rejects factor out of range", async () => {
+    const res = await runTool({ factor: 10 });
+    expect(res.statusCode).toBe(400);
+  });
+});