Test initialization in empty s3 bucket

import lamindb_setup as ln_setup
from lamindb_setup.core.upath import UPath

root_str = "s3://lamindb-setup-ci-empty-bucket"
root_path = UPath(root_str, cache_regions=True)

for s in root_path.iterdir():
    if s.is_file():
        s.unlink()
    elif s.is_dir():
        s.rmdir()

assert list(root_path.iterdir()) == []

ln_setup.init(storage=root_str)

assert ln_setup.settings.storage.is_cloud
assert ln_setup.settings.storage.root_as_str == root_str
assert ln_setup.settings.storage.region == "us-east-1"
assert (
    str(ln_setup.settings.instance._sqlite_file)
    == f"{root_str}/{ln_setup.settings.instance.id.hex}.lndb"
)

ln_setup.delete("lamindb-setup-ci-empty-bucket", force=True)

for s in root_path.iterdir():
    if s.is_file():
        s.unlink()
    elif s.is_dir():
        s.rmdir()