code: def test_string_strip():
      strip_list = [True, False]
      strip_pos_list = ["both", "left", "right"]
      strip_str_list = [None, " "]
  
      in_str_list = [
          " hello ",
          "hello ",
          " hello",
          " hello",
          "hello ",
          "hello ",
          "hello",
          "hello",
          "hello",
          "hello",
          "hello",
          "hello",
      ]
      out_str_list = [
          "hello",
          "hello",
          "hello",
          "hello",
          "hello",
          "hello",
          "hello",
          "hello",
          "hello",
          "hello",
          "hello",
          "hello",
      ]
  
      for idx1, strip in enumerate(strip_list):
          for idx2, strip_pos in enumerate(strip_pos_list):
              for idx3, strip_str in enumerate(strip_str_list):
                  tmp_args = dict(
                      strip=strip,
                      strip_pos=strip_pos,
                      strip_str=strip_str,
                  )
                  strip_class = StringStripper(**tmp_args)
                  i = (
                      idx1 * len(strip_pos_list) * len(strip_str_list)
                      + idx2 * len(strip_str_list)
                      + idx3
                  )
  
                  assert strip_class(in_str_list[i]) == out_str_list[i]
  
      with pytest.raises(AssertionError):
          StringStripper(strip="strip")
          StringStripper(strip_pos="head")
          StringStripper(strip_str=["\n", "\t"])
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_string_strip() without return types