code: def test_gzip():
      res = decrypt(
          Config().library_default().complete_config(),
          "H4sIAAzul18A/yXJzQmAMBSEwVa+ckwZT7LIw80P6sXuA3ocZpM9aC89msibXSJ6peA8RR3Hx5jTfzyXtAAbQvCyNgAAAA==",
      )
      assert res == answer_str
  
imports: import pytest
  from ciphey import decrypt
  from ciphey.iface import Config
label_desc: Use image node_id 27 for calling a global function with example usage: test_gzip() without return types