Deprecate max packed sequence len (#1141)

tests/test_validation.py

@@ -324,20 +324,19 @@ class ValidationTest(BaseValidation):
 
         validate_config(cfg)
 
-    def test_packing(self):
+    def test_deprecated_packing(self):
         cfg = DictDefault(
             {
-                "max_packed_sequence_len": 2048,
+                "max_packed_sequence_len": 1024,
             }
         )
-        with self._caplog.at_level(logging.WARNING):
+        with pytest.raises(
+            DeprecationWarning,
+            match=r"`max_packed_sequence_len` is no longer supported",
+        ):
             validate_config(cfg)
-            assert any(
-                "max_packed_sequence_len will be deprecated in favor of sample_packing"
-                in record.message
-                for record in self._caplog.records
-            )
 
+    def test_packing(self):
         cfg = DictDefault(
             {
                 "sample_packing": True,
@@ -352,16 +351,6 @@ class ValidationTest(BaseValidation):
                 for record in self._caplog.records
             )
 
-        cfg = DictDefault(
-            {
-                "max_packed_sequence_len": 2048,
-                "sample_packing": True,
-            }
-        )
-        regex_exp = r".*set only one of max_packed_sequence_len \(deprecated soon\) or sample_packing.*"
-        with pytest.raises(ValueError, match=regex_exp):
-            validate_config(cfg)
-
     @pytest.mark.skipif(
         is_torch_bf16_gpu_available(),
         reason="test should only run on gpus w/o bf16 support",