Merge pull request galaxyproject#18888 from mvdbeek/compressed_file_t…

…weak

Raise exception if CompressedFile used on incompatible file

lib/galaxy/util/compression_utils.py

@@ -188,6 +188,8 @@ def __init__(self, file_path: StrPath, mode: str = "r") -> None:
             self.file_type = "tar"
         elif zipfile.is_zipfile(file_path) and not file_path_str.endswith(".jar"):
             self.file_type = "zip"
+        else:
+            raise Exception("File must be valid zip or tar file.")
         self.file_name = os.path.splitext(os.path.basename(file_path))[0]
         if self.file_name.endswith(".tar"):
             self.file_name = os.path.splitext(self.file_name)[0]