class_docstr: Test ability to marshall text_area protos.
class_docstr_tok: ["Test","ability","to","marshall","text_area","protos","."]
docstr: Test that it works correctly inside of a column.
docstr_tok: ["Test","that","it","works","correctly","inside","of","a","column","."]
code: def test_inside_column(self):
      """Test that it works correctly inside of a column."""
      col1, col2, col3 = st.columns([2.5, 1.5, 8.3])
  
      with col1:
          st.text_area("foo")
  
      all_deltas = self.get_all_deltas_from_queue()
  
      # 5 elements will be created: 1 horizontal block, 3 columns, 1 widget
      self.assertEqual(len(all_deltas), 5)
      text_area_proto = (
          self.get_delta_from_queue().new_element.text_area
      )
  
      self.assertEqual(text_area_proto.label, "foo")
  
imports: import re
  from unittest.mock import MagicMock, patch
  from parameterized import parameterized
  import streamlit
  from streamlit.errors import StreamlitAPIException
  from streamlit.proto.LabelVisibilityMessage_pb2 import LabelVisibilityMessage
  from streamlit.testing.v1.app_test import AppTest
  from tests.delta_generator_test_case import DeltaGeneratorTestCase
label_desc: Use image node_id 9 for calling the TextAreaTest obj's underlying member method code with example usage: obj.test_inside_column() without return types