def test_delete_deletes_file_when_last_key() -> None:
path = Path.cwd() / "config.json"
storage = Storage(str(path))
storage.set("key", "value")
storage.delete("key")
assert not path.exists()
def test_delete_unsets_value() -> None:
path = Path.cwd() / "config.json"
storage = Storage(str(path))
storage.set("key1", "value1")
storage.set("key2", "value2")
storage.set("key3", "value3")
storage.delete("key2")
data = json.loads(path.read_text(encoding="utf-8"))
assert data == {"key1": "value1", "key3": "value3"}