tests: fix broken test case because of missing pathlib import

lisa_on_cuda/utils/app_helpers.py

@@ -1,5 +1,6 @@
 import argparse
 import logging
+from pathlib import Path
 import os
 import re
 from typing import Callable
@@ -315,7 +316,7 @@ def get_inference_model_by_args(
 
     def inference(
             input_str: str,
-            input_image: str | np.ndarray,
+            input_image: str | Path | np.ndarray,
             internal_logger: logging = None,
             embedding_key: str = None
     ):
@@ -357,8 +358,8 @@ def get_inference_model_by_args(
 
         internal_logger.info("read and preprocess image.")
         image_np = input_image
-        if isinstance(input_image, str):
-            image_np = cv2.imread(input_image)
+        if isinstance(input_image, str) or isinstance(input_image, Path):
+            image_np = cv2.imread(str(input_image))
             image_np = cv2.cvtColor(image_np, cv2.COLOR_BGR2RGB)
         original_size_list = [image_np.shape[:2]]
         internal_logger.debug("start clip_image_processor.preprocess")

tests/test_app_helpers.py

@@ -87,3 +87,7 @@ class TestAppBuilders(unittest.TestCase):
                 logging.info(f"Written files with prefix '{prefix}' in {output_folder} folder.")
                 raise ae
         logging.info("end")
+
+
+if __name__ == '__main__':
+    unittest.main()