code: def test_default(self) -> None:
      assert bus.nice_join(["one"]) == "one"
      assert bus.nice_join(["one", "two"]) == "one or two"
      assert (
          bus.nice_join(["one", "two", "three"]) == "one, two or three"
      )
      assert (
          bus.nice_join(["one", "two", "three", "four"])
          == "one, two, three or four"
      )
  
imports: from __future__ import annotations
  import pytest
  from urllib.parse import quote_plus
  import bokeh.util.strings
label_desc: Use image node_id 1 for calling the Test_nice_join obj's underlying member method code with example usage: obj.test_default() without return types