Fix tests

Author: dstansby

tests/test_api.py

@@ -171,7 +171,7 @@ def test_v2_and_v3_exist_at_same_path(store: Store) -> None:
     zarr.create_array(store, shape=(10,), dtype="uint8", zarr_format=2)
     msg = f"Both zarr.json (Zarr format 3) and .zarray (Zarr format 2) metadata objects exist at {store}. Zarr v3 will be used."
     with pytest.warns(UserWarning, match=re.escape(msg)):
-        zarr.open(store=store, mode="r")
+        zarr.open(store=store)
 
 
 @pytest.mark.parametrize("store", ["memory"], indirect=True)

tests/test_array.py

@@ -1473,7 +1473,7 @@ async def test_name(store: Store, zarr_format: ZarrFormat, path: str | None) ->
             for parent_path in parents:
                 # this will raise if these groups were not created
                 _ = await zarr.api.asynchronous.open_group(
-                    store=store, path=parent_path, mode="r", zarr_format=zarr_format
+                    store=store, path=parent_path, zarr_format=zarr_format
                 )
 
 
@@ -1661,7 +1661,7 @@ def test_roundtrip_numcodecs() -> None:
 
     BYTES_CODEC = {"name": "bytes", "configuration": {"endian": "little"}}
     # Read in the array again and check compressor config
-    root = zarr.open_group(store, mode="r")
+    root = zarr.open_group(store)
     metadata = root["test"].metadata.to_dict()
     expected = (*filters, BYTES_CODEC, *compressors)
     assert metadata["codecs"] == expected