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huihuiSquare/digital-avatar-app/backend/tests/test_pdf_ocr_service.py
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3.4 KiB
Python

from types import SimpleNamespace
from unittest.mock import MagicMock, patch
import pytest
from services.pdf_ocr_service import extract_scanned_pdf_text
class FakePixmap:
def tobytes(self, *_args, **_kwargs):
return b"jpeg-page"
class FakePage:
def get_pixmap(self, **_kwargs):
return FakePixmap()
class FakeDocument:
page_count = 2
def __enter__(self):
return self
def __exit__(self, *_args):
return None
def load_page(self, _index):
return FakePage()
def test_scanned_pdf_ocr_preserves_page_order_and_reports_progress(monkeypatch):
fake_pymupdf = SimpleNamespace(
open=lambda _path: FakeDocument(),
Matrix=lambda x, y: (x, y),
csRGB="rgb",
)
monkeypatch.setitem(__import__("sys").modules, "pymupdf", fake_pymupdf)
progress = []
reservation = SimpleNamespace()
config = SimpleNamespace(
api_key="configured",
ocr_model="qwen-vl-ocr",
vision_model="vision",
vision_max_tokens=2048,
)
with (
patch("services.pdf_ocr_service.get_chat_model_config", return_value=config),
patch("services.pdf_ocr_service.prepare_image", return_value=SimpleNamespace()),
patch(
"services.pdf_ocr_service.call_vision_model",
side_effect=[
{"content": "第一页文字", "usage": {"total_tokens": 10}},
{"content": "第二页文字", "usage": {"total_tokens": 12}},
],
),
patch("services.pdf_ocr_service.reserve_avatar_tokens", return_value=reservation) as reserve,
patch("services.pdf_ocr_service.settle_reservation") as settle,
):
text = extract_scanned_pdf_text(
MagicMock(),
SimpleNamespace(id="avatar-1"),
"/tmp/scanned.pdf",
on_progress=lambda done, total: progress.append((done, total)),
)
assert text == "[第 1 页]\n第一页文字\n\n[第 2 页]\n第二页文字"
assert progress == [(1, 2), (2, 2)]
assert reserve.call_count == 2
assert settle.call_count == 2
def test_scanned_pdf_ocr_releases_tokens_after_retries_fail(monkeypatch):
fake_document = FakeDocument()
fake_document.page_count = 1
fake_pymupdf = SimpleNamespace(
open=lambda _path: fake_document,
Matrix=lambda x, y: (x, y),
csRGB="rgb",
)
monkeypatch.setitem(__import__("sys").modules, "pymupdf", fake_pymupdf)
monkeypatch.setenv("KNOWLEDGE_PDF_OCR_ATTEMPTS", "2")
reservation = SimpleNamespace()
config = SimpleNamespace(
api_key="configured",
ocr_model="qwen-vl-ocr",
vision_model="vision",
vision_max_tokens=2048,
)
with (
patch("services.pdf_ocr_service.get_chat_model_config", return_value=config),
patch("services.pdf_ocr_service.prepare_image", return_value=SimpleNamespace()),
patch("services.pdf_ocr_service.call_vision_model", side_effect=RuntimeError("timeout")) as call,
patch("services.pdf_ocr_service.reserve_avatar_tokens", return_value=reservation),
patch("services.pdf_ocr_service.release_reservation") as release,
patch("services.pdf_ocr_service.time.sleep"),
):
with pytest.raises(RuntimeError, match="第 1/1 页识别失败"):
extract_scanned_pdf_text(MagicMock(), SimpleNamespace(id="avatar-1"), "/tmp/scanned.pdf")
assert call.call_count == 2
release.assert_called_once()