Fix tests

gallery/utils/datetime_utils.py

@@ -0,0 +1,30 @@
+"""Date and time utility functions."""
+
+from datetime import datetime
+
+
+def datetime_from_timestamp(timestamp: float) -> datetime:
+    """
+    Convert a Unix timestamp to a datetime object.
+
+    Args:
+        timestamp: Unix timestamp as float
+
+    Returns:
+        datetime object
+    """
+    return datetime.fromtimestamp(timestamp)
+
+
+def strftime_filter(dt: datetime, fmt: str) -> str:
+    """
+    Format a datetime object using strftime.
+
+    Args:
+        dt: datetime object to format
+        fmt: strftime format string
+
+    Returns:
+        Formatted datetime string
+    """
+    return dt.strftime(fmt)

gallery/utils/metadata.py

@@ -60,7 +60,11 @@ def load_folder_metadata(folder_path: Path) -> Dict[str, Any]:
     """
     # Try YAML first, then JSON for backwards compatibility
     for filename in ['metadata.yaml', 'metadata.yml', 'metadata.json']:
-        metadata_path = folder_path / filename
+        try:
+            metadata_path = folder_path / filename
+        except TypeError as e:
+            raise RuntimeError(f"DEBUG {folder_path=}, {filename=}")
+
         if metadata_path.exists():
             return load_metadata_file(metadata_path)