[REF TEST] Refactor data handling

clinica/iotools/converters/adni_to_bids/adni_utils.py

@@ -929,6 +929,7 @@ def _create_file(
                     ),
                     lvl="error",
                 )
+                raise ValueError(error_msg)
         else:
             shutil.copy(image_path, output_image)
 

clinica/iotools/utils/data_handling/__init__.py

@@ -0,0 +1,21 @@
+from ._centering import (
+    center_all_nifti,
+    center_nifti_origin,
+    check_relative_volume_location_in_world_coordinate_system,
+    check_volume_location_in_world_coordinate_system,
+)
+from ._files import create_subs_sess_list, write_list_of_files
+from ._merging import create_merge_file
+from ._missing import compute_missing_mods, compute_missing_processing
+
+__all__ = [
+    "create_merge_file",
+    "center_nifti_origin",
+    "center_all_nifti",
+    "compute_missing_mods",
+    "compute_missing_processing",
+    "create_subs_sess_list",
+    "write_list_of_files",
+    "check_volume_location_in_world_coordinate_system",
+    "check_relative_volume_location_in_world_coordinate_system",
+]