fix typing in test

Author: brokkoli71

numcodecs/tests/test_zarr3.py

@@ -317,17 +317,25 @@ def test_cast_numcodecs_to_v3(store: Store, codec_v2, expected_v3_cls) -> None:
     assert result_v3.__class__ == expected_v3_cls
     assert result_v3.codec_config == codec_v2.get_config()
 
-    from zarr.core.array import CompressorsLike, FiltersLike, SerializerLike
-
-    codec_args: FiltersLike | SerializerLike | CompressorsLike
-
+    filters = "auto"
+    serializer = "auto"
+    compressors = "auto"
     if issubclass(expected_v3_cls, numcodecs.zarr3._NumcodecsArrayArrayCodec):
-        codec_args = {"filters": [result_v3]}
+        filters = [result_v3]
     elif issubclass(expected_v3_cls, numcodecs.zarr3._NumcodecsArrayBytesCodec):
-        codec_args = {"serializer": result_v3}
+        serializer = result_v3
     elif issubclass(expected_v3_cls, numcodecs.zarr3._NumcodecsBytesBytesCodec):
-        codec_args = {"compressors": [result_v3]}
+        compressors = [result_v3]
     else:
         raise TypeError(f"unsupported type: {expected_v3_cls}")
 
-    zarr.create_array(store, shape=(64,), chunks=(64,), dtype=np.bool, fill_value=0, **codec_args)
+    zarr.create_array(
+        store,
+        shape=(64,),
+        chunks=(64,),
+        dtype=np.bool,
+        fill_value=0,
+        filters=filters,
+        compressors=compressors,
+        serializer=serializer,
+    )