feat: expand intelligent investigation workspace

server/edge-tts-synthesis.test.ts

@@ -0,0 +1,42 @@
+import { EdgeTTS } from "node-edge-tts";
+import { afterEach, expect, it, vi } from "vitest";
+import { synthesizeEdgeSpeech } from "./edge-tts-service";
+
+afterEach(() => vi.restoreAllMocks());
+
+it("collects streamed MP3 bytes with the configured voice and a bounded timeout", async () => {
+  const stream = vi.spyOn(EdgeTTS.prototype, "streamAudio").mockImplementation(async function* (this: EdgeTTS) {
+    expect(this).toMatchObject({ voice: "zh-CN-XiaoxiaoNeural", timeout: 30_000 });
+    yield Buffer.from([73, 68]);
+    yield { part: "测试", start: 0, end: 1 };
+    yield Buffer.from([51]);
+  });
+  expect(await synthesizeEdgeSpeech("测试", "zh-CN-XiaoxiaoNeural"))
+    .toEqual(Uint8Array.from([73, 68, 51]));
+  expect(stream).toHaveBeenCalledWith("测试");
+});
+
+it("rejects empty audio and propagates upstream failures", async () => {
+  const stream = vi.spyOn(EdgeTTS.prototype, "streamAudio").mockImplementation(async function* () {});
+  await expect(synthesizeEdgeSpeech("测试", "zh-CN-XiaoxiaoNeural")).rejects.toThrow("空音频");
+  stream.mockImplementation(async function* () {
+    yield { part: "测试", start: 0, end: 1 };
+    throw new Error("upstream unavailable");
+  });
+  await expect(synthesizeEdgeSpeech("测试", "zh-CN-XiaoxiaoNeural"))
+    .rejects.toThrow("upstream unavailable");
+});
+
+it("stops consuming an oversized audio stream", async () => {
+  const closed = vi.fn();
+  vi.spyOn(EdgeTTS.prototype, "streamAudio").mockImplementation(async function* () {
+    try {
+      yield Buffer.alloc(5 * 1024 * 1024 + 1);
+      throw new Error("must stop before consuming more audio");
+    } finally {
+      closed();
+    }
+  });
+  await expect(synthesizeEdgeSpeech("测试", "zh-CN-XiaoxiaoNeural")).rejects.toThrow("音频过大");
+  expect(closed).toHaveBeenCalledOnce();
+});