code: def test_context_manager_blocking_timeout(self, r):
      with self.get_lock(r, "foo", blocking=False):
          bt = 0.4
          sleep = 0.05
          fudge_factor = 0.05
          lock2 = self.get_lock(
              r, "foo", sleep=sleep, blocking_timeout=bt
          )
          start = time.monotonic()
          assert not lock2.acquire()
          # The elapsed duration should be less than the total blocking_timeout
          assert (
              (bt + fudge_factor)
              > (time.monotonic() - start)
              > bt - sleep
          )
  
imports: import time
  import pytest
  from redis.client import Redis
  from redis.exceptions import LockError, LockNotOwnedError
  from redis.lock import Lock
  from .conftest import _get_client
label_desc: Use image node_id 16 for calling the TestLock obj's underlying member method code with example usage: obj.test_context_manager_blocking_timeout(r) without return types