code: def testConstructCustomExecutor(self):
      example_gen = component.FileBasedExampleGen(
          input_base="path",
          custom_executor_spec=executor_spec.BeamExecutorSpec(
              TestExampleGenExecutor
          ),
      )
      self.assertEqual(driver.FileBasedDriver, example_gen.driver_class)
      self.assertEqual(
          standard_artifacts.Examples.TYPE_NAME,
          example_gen.outputs[
              standard_component_specs.EXAMPLES_KEY
          ].type_name,
      )
  
imports: import tensorflow
  from tfx.components.example_gen import base_example_gen_executor
  from tfx.components.example_gen import component
  from tfx.components.example_gen import driver
  from tfx.dsl.components.base import executor_spec
  from tfx.proto import example_gen_pb2
  from tfx.proto import range_config_pb2
  from tfx.types import standard_artifacts
  from tfx.types import standard_component_specs
  from tfx.utils import proto_utils
  from google.protobuf import any_pb2
label_desc: Use image node_id 6 for calling the ComponentTest obj's underlying member method code with example usage: obj.testConstructCustomExecutor() without return types