code: def test_mode(
      self,
      mode,
      expected_shape,
      ray_start_regular_shared,
  ):
      # "different-modes" contains 32x32 images with modes "CMYK", "L", and "RGB"
      ds = ray.data.read_images(
          "example://image-datasets/different-modes", mode=mode
      )
      assert all(
          [
              record["image"].shape == expected_shape
              for record in ds.take()
          ]
      )
  
imports: import os
  import tempfile
  from typing import Dict
  import numpy
  import pyarrow
  import pytest
  from fsspec.implementations.local import LocalFileSystem
  from PIL import Image
  import ray
  from ray.data.datasource import Partitioning
  from ray.data.datasource.file_meta_provider import FastFileMetadataProvider
  from ray.data.datasource.image_datasource import ImageDatasource, _ImageFileMetadataProvider
  from ray.data.extensions import ArrowTensorType
  from ray.data.tests.conftest import *
  from ray.data.tests.mock_http_server import *
  from ray.tests.conftest import *
label_desc: Use image node_id 10 for calling the TestReadImages obj's underlying member method code with example usage: obj.test_mode(mode, expected_shape, ray_start_regular_shared) without return types