code: def test_existing_cache_path(self):
      with tempfile.TemporaryDirectory() as tmpdir:
          cache1 = GFileCache(tmpdir)
          cache1.put("foo", b"bar")
          del cache1
          cache2 = GFileCache(tmpdir)
          self.assertEqual(cache2.get("foo"), b"bar")
  
file_path: jax/tests/gfile_cache_test.py
imports: import tempfile
  import threading
  from absl.testing import absltest
  from jax._src.gfile_cache import GFileCache
  import jax._src.test_util
label_desc: Use image node_id 3 for calling the FileSystemCacheTest obj's underlying member method code with example usage: obj.test_existing_cache_path() without return types