chore: import upstream snapshot with attribution

tests/python/support/test_auto_config.py

@@ -0,0 +1,43 @@
+import json
+import tempfile
+from pathlib import Path
+
+import pytest
+
+from mlc_llm.support import logging
+from mlc_llm.support.auto_config import detect_config
+
+logging.enable_logging()
+
+# test category "unittest"
+pytestmark = [pytest.mark.unittest]
+
+
+def _create_json_file(json_path, data):
+    with open(json_path, "w", encoding="utf-8") as i_f:
+        json.dump(data, i_f)
+
+
+def test_detect_config():
+    with tempfile.TemporaryDirectory() as tmpdir:
+        base_path = Path(tmpdir)
+        config_json_path = base_path / "config.json"
+        _create_json_file(config_json_path, {})
+
+        assert detect_config(base_path) == config_json_path
+        assert detect_config(config_json_path) == config_json_path
+
+
+def test_detect_config_fail():
+    with pytest.raises(ValueError):
+        detect_config(Path("do/not/exist"))
+
+    with tempfile.TemporaryDirectory() as tmpdir:
+        base_path = Path(tmpdir)
+        with pytest.raises(ValueError):
+            assert detect_config(base_path)
+
+
+if __name__ == "__main__":
+    test_detect_config()
+    test_detect_config_fail()