code: def test_itervalues_empty(self):
      cache = LRUCache(2)
      values = [v for v in cache.values()]
      assert len(values) == 0
  
imports: import pickle
  import random
  from collections import deque
  from copy import copy
  import pytest
  from markupsafe import Markup
  from jinja2._compat import range_type
  from jinja2._compat import string_types
  from jinja2.utils import consume
  from jinja2.utils import generate_lorem_ipsum
  from jinja2.utils import LRUCache
  from jinja2.utils import missing
  from jinja2.utils import object_type_repr
  from jinja2.utils import select_autoescape
  from jinja2.utils import urlize
label_desc: Use image node_id 4 for calling the TestLRUCache obj's underlying member method code with example usage: obj.test_itervalues_empty() without return types