[diffusion] CI: enable UT (#20690)

python/sglang/multimodal_gen/utils.py

@@ -35,21 +35,25 @@ logger = init_logger(__name__)
 T = TypeVar("T")
 
 
+def _expand_path_value(field_name: str, value: Any) -> Any:
+    eu = os.path.expanduser
+    if field_name.endswith("_path") and isinstance(value, str):
+        return eu(value)
+    if field_name.endswith("_path") and isinstance(value, list):
+        return [eu(x) if isinstance(x, str) else x for x in value]
+    if field_name.endswith("_paths") and isinstance(value, dict):
+        return {k: eu(p) if isinstance(p, str) else p for k, p in value.items()}
+    return value
+
+
+def expand_path_kwargs(kwargs: dict[str, Any]) -> dict[str, Any]:
+    return {key: _expand_path_value(key, value) for key, value in kwargs.items()}
+
+
 def expand_path_fields(obj) -> None:
     """In-place expanduser on all dataclass fields whose name ends with '_path' or '_paths'."""
-    eu = os.path.expanduser
     for f in fields(obj):
-        v = getattr(obj, f.name)
-        if f.name.endswith("_path") and isinstance(v, str):
-            setattr(obj, f.name, eu(v))
-        elif f.name.endswith("_path") and isinstance(v, list):
-            setattr(obj, f.name, [eu(x) if isinstance(x, str) else x for x in v])
-        elif f.name.endswith("_paths") and isinstance(v, dict):
-            setattr(
-                obj,
-                f.name,
-                {k: eu(p) if isinstance(p, str) else p for k, p in v.items()},
-            )
+        setattr(obj, f.name, _expand_path_value(f.name, getattr(obj, f.name)))
 
 
 # TODO(will): used to convert server_args.precision to torch.dtype. Find a