class_docstr: Test ability to marshall arrow protos.
class_docstr_tok: ["Test","ability","to","marshall","arrow","protos","."]
code: def test_cell_styles(self):
      df = mock_data_frame()
      styler = df.style
      # NOTE: If UUID is not set - a random UUID will be generated.
      styler.set_uuid("FAKE_UUID")
      styler.highlight_max(axis=None)
      st.dataframe(styler)
  
      proto = self.get_delta_from_queue().new_element.arrow_data_frame
      self.assertEqual(
          proto.styler.styles,
          "#T_FAKE_UUIDrow1_col2 { background-color: yellow }",
      )
  
imports: import json
  from unittest.mock import MagicMock, patch
  import numpy
  import pandas
  import pyarrow
  import pytest
  from pandas.io.formats.style_render import StylerRenderer
  import streamlit
  from streamlit.elements.lib.column_config_utils import INDEX_IDENTIFIER
  from streamlit.errors import StreamlitAPIException
  from streamlit.type_util import bytes_to_data_frame, pyarrow_table_to_bytes
  from tests.delta_generator_test_case import DeltaGeneratorTestCase
  from tests.testutil import create_snowpark_session
label_desc: Use image node_id 9 for calling the ArrowDataFrameProtoTest obj's underlying member method code with example usage: obj.test_cell_styles() without return types