[v1] model loader (#9613)

tests_v1/conftest.py

@@ -0,0 +1,29 @@
+# Copyright 2025 the LlamaFactory team.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import pytest
+from pytest import Config, Item
+
+from llamafactory.v1.utils.packages import is_transformers_version_greater_than
+
+
+def pytest_collection_modifyitems(config: Config, items: list[Item]):
+    if is_transformers_version_greater_than("4.57.0"):
+        return
+
+    skip_bc = pytest.mark.skip(reason="Skip backward compatibility tests")
+
+    for item in items:
+        if "tests_v1" in str(item.fspath):
+            item.add_marker(skip_bc)