Skip tests properly (#31308)

* Skip tests properly

* [test_all]

* Add 'reason' as kwarg for skipTest

* [test_all] Fix up

* [test_all]

tests/utils/test_doc_samples.py

@@ -26,7 +26,7 @@ from transformers.testing_utils import require_tf, require_torch, slow
 logger = logging.getLogger()
 
 
-@unittest.skip("Temporarily disable the doc tests.")
+@unittest.skip(reason="Temporarily disable the doc tests.")
 @require_torch
 @require_tf
 @slow

tests/utils/test_model_output.py

@@ -159,11 +159,11 @@ class ModelOutputTester(unittest.TestCase):
             )
 
     # TODO: @ydshieh
-    @unittest.skip("CPU OOM")
+    @unittest.skip(reason="CPU OOM")
     @require_torch
     def test_export_serialization(self):
         if not is_torch_greater_or_equal_than_2_2:
-            return
+            self.skipTest(reason="Export serialization requires torch >= 2.2.0")
 
         model_cls = AlbertForMaskedLM
         model_config = model_cls.config_class()