code: def test_clear(self):
      d = LRUCache(3)
      d["a"] = 1
      d["b"] = 2
      d["c"] = 3
      d.clear()
      assert d.__getstate__() == {
          "capacity": 3,
          "_mapping": {},
          "_queue": deque([]),
      }
  
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 7 for calling the TestLRUCache obj's underlying member method code with example usage: obj.test_clear() without return types