class_docstr: Test Public Streamlit Public APIs.
docstr: Test st.help.
docstr_tok: ["Test","st.help","."]
code: def test_st_help(self):
      """Test st.help."""
      with patch_varname_getter():
          st.help(os.chdir)
  
      el = self.get_delta_from_queue().new_element.doc_string
      self.assertEqual("os.chdir", el.name)
      self.assertEqual("builtin_function_or_method", el.type)
      self.assertTrue(
          el.doc_string.startswith(
              "Change the current working directory"
          )
      )
      self.assertEqual(f"posix.chdir(path)", el.value)
  
file_path: streamlit/lib/tests/streamlit/elements/doc_string_test.py
imports: import os
  from unittest import mock
  import streamlit
  from tests.delta_generator_test_case import DeltaGeneratorTestCase
label_desc: Use image node_id 1 for calling the StHelpAPITest obj's underlying member method code with example usage: obj.test_st_help() without return types