dev(narugo): add cache clear

from PIL import Image

from imgutils.ocr import detect_text_with_ocr, list_det_models, list_rec_models, ocr

from imgutils.ocr.detect import _open_ocr_detection_model

from imgutils.ocr.recognize import _open_ocr_recognition_dictionary, _open_ocr_recognition_model

from test.testings import get_testfile

@pytest.fixture(autouse=True, scope='module')

def _clear_cache():

    try:

        yield

    finally:

        _open_ocr_detection_model.cache_clear()

        _open_ocr_recognition_model.cache_clear()

        _open_ocr_recognition_dictionary.cache_clear()

@pytest.fixture()

def ocr_img_plot():

    yield get_testfile('ocr', 'plot.png')