Add test for parse_json_file and change typing to os.PathLike (#30183)

* Add test for parse_json_file

* Change Path to PathLike

* Fix `Import block is un-sorted or un-formatted`

* revert parse_json_file

* Fix ruff format

* Add parse_json_file test

src/transformers/hf_argparser.py

@@ -14,6 +14,7 @@
 
 import dataclasses
 import json
+import os
 import sys
 import types
 from argparse import ArgumentDefaultsHelpFormatter, ArgumentParser, ArgumentTypeError
@@ -376,7 +377,9 @@ class HfArgumentParser(ArgumentParser):
             raise ValueError(f"Some keys are not used by the HfArgumentParser: {sorted(unused_keys)}")
         return tuple(outputs)
 
-    def parse_json_file(self, json_file: Union[str, Path], allow_extra_keys: bool = False) -> Tuple[DataClass, ...]:
+    def parse_json_file(
+        self, json_file: Union[str, os.PathLike], allow_extra_keys: bool = False
+    ) -> Tuple[DataClass, ...]:
         """
         Alternative helper method that does not use `argparse` at all, instead loading a json file and populating the
         dataclass types.
@@ -398,7 +401,9 @@ class HfArgumentParser(ArgumentParser):
         outputs = self.parse_dict(data, allow_extra_keys=allow_extra_keys)
         return tuple(outputs)
 
-    def parse_yaml_file(self, yaml_file: Union[str, Path], allow_extra_keys: bool = False) -> Tuple[DataClass, ...]:
+    def parse_yaml_file(
+        self, yaml_file: Union[str, os.PathLike], allow_extra_keys: bool = False
+    ) -> Tuple[DataClass, ...]:
         """
         Alternative helper method that does not use `argparse` at all, instead loading a yaml file and populating the
         dataclass types.

tests/utils/test_hf_argparser.py

@@ -379,7 +379,7 @@ class HfArgumentParserTest(unittest.TestCase):
             os.mkdir(temp_local_path)
             with open(temp_local_path + ".json", "w+") as f:
                 json.dump(args_dict_for_json, f)
-            parsed_args = parser.parse_yaml_file(Path(temp_local_path + ".json"))[0]
+            parsed_args = parser.parse_json_file(Path(temp_local_path + ".json"))[0]
 
         args = BasicExample(**args_dict_for_json)
         self.assertEqual(parsed_args, args)