langfuse_mock = <MagicMock name='Langfuse' id='5170124448'>, client = <starlette.testclient.TestClient object at 0x10edf16a0>

    @mock.patch("frontiers_review_assistant.services.llm_handler.Langfuse")
    async def test_upload(langfuse_mock: MagicMock, client: TestClient):
        """
        Tests the behavior of PDF upload functionality and the integration with mocked Langfuse
        authentication checks.
    
        This test ensures that a PDF document can be successfully uploaded via a POST request,
        and that the response is correctly formatted as a text/event-stream. It simulates an
        authentication check via mocking and prepares the necessary test environment, including
        appropriate configurations for handling OCR.
    
        :param langfuse_mock: Mocked instance of the Langfuse service, used to simulate
            authentication checks.
        :param client: Instance of TestClient used to simulate API requests in the test environment.
        :return: None
        """
        langfuse_mock.return_value = MagicMock(auth_check=MagicMock(return_value=True))
        from frontiers_review_assistant.core.config import settings
    
        settings.OCR_TYPE = "llm_ocr"
    
        async with aiofiles.open(Path(__file__).parent / "data/chat_with_doc.pdf", "rb") as document:
            data = await document.read()
            response = client.post(
                url="/api/v1/upload/pdf",
                params={"api_key": "test_api_key"},
                files={"file": ("chat_with_doc.pdf", io.BytesIO(data), "application/pdf")},
                data={
                    "article_id": "1",
                    "session_id": "2",
                    "user_id": "3",
                },
            )
    
>           assert response.status_code == 200
E           assert 403 == 200
E            +  where 403 = <Response [403 Forbidden]>.status_code

tests/test_01_upload.py:44: AssertionError