code: def test_string_conjunction(self) -> None:
      assert bus.nice_join(["one"], conjunction="and") == "one"
      assert (
          bus.nice_join(["one", "two"], conjunction="and")
          == "one and two"
      )
      assert (
          bus.nice_join(["one", "two", "three"], conjunction="and")
          == "one, two and three"
      )
      assert (
          bus.nice_join(
              ["one", "two", "three", "four"], conjunction="and"
          )
          == "one, two, three and four"
      )
  
imports: from __future__ import annotations
  import pytest
  from urllib.parse import quote_plus
  import bokeh.util.strings
label_desc: Use image node_id 2 for calling the Test_nice_join obj's underlying member method code with example usage: obj.test_string_conjunction() without return types