Test for negative depth

Author: csparker247

tests/test_group.py

@@ -1131,6 +1131,9 @@ async def test_group_members_async(store: Store, consolidated_metadata: bool) ->
         assert len(all_children) == 4
         nmembers = await group.nmembers(max_depth=None)
         assert nmembers == 4
+        # test depth<0
+        with pytest.raises(ValueError, match="max_depth"):
+            await group.nmembers(max_depth=-1)
 
 
 async def test_require_group(store: LocalStore | MemoryStore, zarr_format: ZarrFormat) -> None: