refactor: 重构 Agent 模块为 AgentScope，删除旧版 CrewAI/LiteLLM 实现

backend/tests/integration/v1/agent/test_routes.py

@@ -354,6 +354,12 @@ def test_asr_transcribe_returns_sync_transcript(monkeypatch) -> None:
         id=uuid4(), email="user@example.com"
     )
 
+    async def _allow_transcribe(*, user_id: str) -> bool:
+        del user_id
+        return True
+
+    monkeypatch.setattr(agent_router, "_allow_transcribe_request", _allow_transcribe)
+
     async def mock_transcribe_file(file_path: str, filename: str) -> str:
         assert file_path.endswith(".wav")
         assert filename == "test.wav"
@@ -391,6 +397,12 @@ def test_asr_transcribe_rejects_oversized_audio(monkeypatch) -> None:
 
     monkeypatch.setattr(agent_router, "_MAX_TRANSCRIBE_AUDIO_BYTES", 4)
 
+    async def _allow_transcribe(*, user_id: str) -> bool:
+        del user_id
+        return True
+
+    monkeypatch.setattr(agent_router, "_allow_transcribe_request", _allow_transcribe)
+
     client = TestClient(app)
     oversized = BytesIO(b"12345")
     oversized.name = "test.wav"
@@ -407,11 +419,17 @@ def test_asr_transcribe_rejects_oversized_audio(monkeypatch) -> None:
         app.dependency_overrides = {}
 
 
-def test_asr_transcribe_rejects_non_wav_audio() -> None:
+def test_asr_transcribe_rejects_non_wav_audio(monkeypatch) -> None:
     app.dependency_overrides[get_current_user] = lambda: CurrentUser(
         id=uuid4(), email="user@example.com"
     )
 
+    async def _allow_transcribe(*, user_id: str) -> bool:
+        del user_id
+        return True
+
+    monkeypatch.setattr(agent_router, "_allow_transcribe_request", _allow_transcribe)
+
     client = TestClient(app)
     fake_mp3 = BytesIO(b"fake-mp3")
     fake_mp3.name = "test.mp3"
@@ -428,11 +446,17 @@ def test_asr_transcribe_rejects_non_wav_audio() -> None:
         app.dependency_overrides = {}
 
 
-def test_asr_transcribe_rejects_invalid_wav_payload() -> None:
+def test_asr_transcribe_rejects_invalid_wav_payload(monkeypatch) -> None:
     app.dependency_overrides[get_current_user] = lambda: CurrentUser(
         id=uuid4(), email="user@example.com"
     )
 
+    async def _allow_transcribe(*, user_id: str) -> bool:
+        del user_id
+        return True
+
+    monkeypatch.setattr(agent_router, "_allow_transcribe_request", _allow_transcribe)
+
     client = TestClient(app)
     fake_payload = BytesIO(b"not-a-wav")
     fake_payload.name = "test.wav"
@@ -447,3 +471,33 @@ def test_asr_transcribe_rejects_invalid_wav_payload() -> None:
         assert response.json()["detail"] == "Unsupported audio format"
     finally:
         app.dependency_overrides = {}
+
+
+def test_asr_transcribe_rejects_when_rate_limited_for_current_user(monkeypatch) -> None:
+    known_user = CurrentUser(id=uuid4(), email="user@example.com")
+    app.dependency_overrides[get_current_user] = lambda: known_user
+
+    captured_user_ids: list[str] = []
+
+    async def _deny_transcribe(*, user_id: str) -> bool:
+        captured_user_ids.append(user_id)
+        return False
+
+    monkeypatch.setattr(agent_router, "_allow_transcribe_request", _deny_transcribe)
+
+    client = TestClient(app)
+    wav_content = b"RIFF\x24\x80\x00\x00WAVEfmt "
+    wav_file = BytesIO(wav_content)
+    wav_file.name = "test.wav"
+
+    try:
+        response = client.post(
+            "/api/v1/agent/transcribe",
+            files={"audio": ("test.wav", wav_file, "audio/wav")},
+        )
+
+        assert response.status_code == 429
+        assert response.json()["detail"] == "Too many transcribe requests"
+        assert captured_user_ids == [str(known_user.id)]
+    finally:
+        app.dependency_overrides = {}