code: def test_rand(self):
      self.assertRaises(TypeError, lambda: True & self.psdf["string"])
      self.assertRaises(TypeError, lambda: False & self.psdf["string"])
  
imports: import unittest
  import numpy
  import pandas
  from pandas.api.types import CategoricalDtype
  from pyspark import pandas
  from pyspark.pandas.config import option_context
  from pyspark.testing.pandasutils import PandasOnSparkTestCase
  from pyspark.pandas.tests.data_type_ops.testing_utils import OpsTestBase
  from pyspark.pandas.typedef.typehints import extension_object_dtypes_available
label_desc: Use image node_id 19 for calling the StringOpsTestsMixin obj's underlying member method code with example usage: obj.test_rand() without return types