code: def test_save(self):
      storage = JSONStore(self.storage_file)
      storage.save("foobar", "yep")
      found_it = False
      if "foobar" in open(self.storage_file).read():
          found_it = True
      assert found_it
  
file_path: datmo/datmo/core/util/tests/test_json_store.py
imports: from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  import tempfile
  import platform
  import os
  from io import open
  from datmo.core.util.json_store import JSONStore
  from datmo.core.util.exceptions import FileIOError
label_desc: Use image node_id 4 for calling the TestJSONStore obj's underlying member method code with example usage: obj.test_save() without return types