New Captcha Package added

packages/captcha/test/audio.test.ts

@@ -0,0 +1,24 @@
+import { describe, expect, test } from "bun:test";
+import { join } from "node:path";
+import {
+  createAssetAudioRenderer,
+  resolveCaptchaAudioAssetsDir,
+} from "../src/audio/renderer.ts";
+
+const packageRoot = join(import.meta.dir, "..");
+const expectedAssets = join(packageRoot, "assets", "audio");
+
+describe("CAPTCHA audio renderer", () => {
+  test("resolves the packaged audio directory", () => {
+    expect(resolveCaptchaAudioAssetsDir(expectedAssets)).toBe(expectedAssets);
+  });
+
+  test("renders a playable PCM WAV challenge", async () => {
+    const renderer = createAssetAudioRenderer({ assetsDir: expectedAssets, gapMs: 100 });
+    const bytes = await renderer.render(["one", "two", "three"], "en-IN");
+
+    expect(bytes.byteLength).toBeGreaterThan(44);
+    expect(new TextDecoder().decode(bytes.slice(0, 4))).toBe("RIFF");
+    expect(new TextDecoder().decode(bytes.slice(8, 12))).toBe("WAVE");
+  });
+});