Remove comments and update test_config.

Author: RFLeijenaar

src/zarr/registry.py

@@ -25,7 +25,6 @@
     from zarr.core.chunk_key_encodings import ChunkKeyEncoding
     from zarr.core.common import JSON
 
-# CHANGE: Consider adding here
 __all__ = [
     "Registry",
     "get_buffer_class",
@@ -64,10 +63,8 @@ def register(self, cls: type[T], qualname: str | None = None) -> None:
 __pipeline_registry: Registry[CodecPipeline] = Registry()
 __buffer_registry: Registry[Buffer] = Registry()
 __ndbuffer_registry: Registry[NDBuffer] = Registry()
-# Now a dict[str, Registry[ChunkKeyEncoding]]
 __chunk_key_encoding_registries: dict[str, Registry[ChunkKeyEncoding]] = defaultdict(Registry)
 
-# CHANGE: Consider updating docstring
 """
 The registry module is responsible for managing implementations of codecs,
 pipelines, buffers, ndbuffers, and chunk key encodings and collecting them from entrypoints.

tests/test_config.py

@@ -74,6 +74,10 @@ def test_config_defaults_set() -> None:
                     "vlen-utf8": "zarr.codecs.vlen_utf8.VLenUTF8Codec",
                     "vlen-bytes": "zarr.codecs.vlen_utf8.VLenBytesCodec",
                 },
+                "chunk_key_encodings": {
+                    "default": "zarr.core.chunk_key_encodings.DefaultChunkKeyEncoding",
+                    "v2": "zarr.core.chunk_key_encodings.V2ChunkKeyEncoding",
+                },
                 "buffer": "zarr.buffer.cpu.Buffer",
                 "ndbuffer": "zarr.buffer.cpu.NDBuffer",
             }