fix unit test msg

src/ytdl_sub/downloaders/url/validators.py

@@ -185,7 +185,7 @@ class MultiUrlValidator(OptionsValidator):
         Partially validate a collection
         """
         if isinstance(value, dict):
-            value["urls"] = value.get("urls", [{"url": "placeholder"}])
+            value["url"] = value.get("url", "sadfasdf")
         _ = cls(name, value)
 
     def __init__(self, name, value):
@@ -197,9 +197,11 @@ class MultiUrlValidator(OptionsValidator):
             # Pop old required field in case it's still there
             value_copy.pop("download_strategy", None)
 
-            if "urls" in value:
-                self._urls = UrlListValidator(name=name, value=value["urls"])
+            if "urls" in value_copy:
+                self._urls = UrlListValidator(name=name, value=value_copy["urls"])
             else:
+                # Validate using a single URL validator first
+                _ = UrlValidator(name=name, value=value_copy)
                 self._urls = UrlListValidator(name=name, value=[value_copy])
         else:
             # Should error here. TODO: Add simplifications download here (string, list)

tests/unit/config/test_config_file.py

@@ -98,7 +98,8 @@ class TestConfigFilePartiallyValidatesPresets:
             preset_dict={"download": {"download_strategy": "multi_url", "bad_key": "nope"}},
             expected_error_message="Validation error in partial_preset.download: "
             "'partial_preset.download' contains the field 'bad_key' which is not allowed. "
-            "Allowed fields: urls",
+            "Allowed fields: download_reverse, playlist_thumbnails, source_thumbnails, url, "
+            "variables",
         )
 
     @pytest.mark.parametrize(