New model PR needs green (slow tests) CI (#30341)

* You should not pass

Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

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Co-authored-by: ydshieh <ydshieh@users.noreply.github.com>
Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

utils/check_if_new_model_added.py

@@ -0,0 +1,96 @@
+# Copyright 2024 The HuggingFace Team. All rights reserved.
+#
+# 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.
+
+"""
+This script is used to get the directory of the modeling file that is added in a pull request (i.e. a new model PR).
+
+Usage:
+
+```bash
+python utils/check_if_new_model_added.py
+```
+"""
+
+import re
+from pathlib import Path
+from typing import List
+
+from git import Repo
+
+
+PATH_TO_REPO = Path(__file__).parent.parent.resolve()
+
+
+def get_new_python_files_between_commits(base_commit: str, commits: List[str]) -> List[str]:
+    """
+    Get the list of added python files between a base commit and one or several commits.
+
+    Args:
+        repo (`git.Repo`):
+            A git repository (for instance the Transformers repo).
+        base_commit (`str`):
+            The commit reference of where to compare for the diff. This is the current commit, not the branching point!
+        commits (`List[str]`):
+            The list of commits with which to compare the repo at `base_commit` (so the branching point).
+
+    Returns:
+        `List[str]`: The list of python files added between a base commit and one or several commits.
+    """
+    code_diff = []
+    for commit in commits:
+        for diff_obj in commit.diff(base_commit):
+            # We always add new python files
+            if diff_obj.change_type == "A" and diff_obj.b_path.endswith(".py"):
+                code_diff.append(diff_obj.b_path)
+
+    return code_diff
+
+
+def get_new_python_files() -> List[str]:
+    """
+    Return a list of python files that have been added between the current head and the main branch.
+
+    Returns:
+        `List[str]`: The list of python files added.
+    """
+    repo = Repo(PATH_TO_REPO)
+
+    try:
+        # For the cases where the main branch exists locally
+        main = repo.refs.main
+    except AttributeError:
+        # On GitHub Actions runners, it doesn't have local main branch
+        main = repo.remotes.origin.refs.main
+
+    print(f"main is at {main.commit}")
+    print(f"Current head is at {repo.head.commit}")
+
+    branching_commits = repo.merge_base(main, repo.head)
+    for commit in branching_commits:
+        print(f"Branching commit: {commit}")
+    return get_new_python_files_between_commits(repo.head.commit, branching_commits)
+
+
+if __name__ == "__main__":
+    new_files = get_new_python_files()
+    reg = re.compile(r"src/transformers/(models/.*)/modeling_.*\.py")
+
+    new_model = ""
+    for x in new_files:
+        find_new_model = reg.findall(x)
+        if len(find_new_model) > 0:
+            new_model = find_new_model[0]
+        # It's unlikely we have 2 new modeling files in a pull request.
+        break
+    print(new_model)