code: def test_get(self):
      with self._exp() as exp:
          var = String(exp, self._random_path())
          var.assign("adfh")
          self.assertEqual("adfh", var.fetch())
  
file_path: neptune-client/tests/unit/neptune/new/attributes/atoms/test_string.py
imports: from mock import MagicMock, patch
  from neptune.attributes.atoms.string import String, StringVal
  from neptune.internal.operation import AssignString
  from tests.unit.neptune.new.attributes.test_attribute_base import TestAttributeBase
label_desc: Use image node_id 2 for calling the TestString obj's underlying member method code with example usage: obj.test_get() without return types