code: def test_divider():
      script = AppTest.from_string(
          """
          import streamlit as st
  
          st.divider()
          """,
      )
      sr = script.run()
  
      assert sr.divider
      assert sr.divider[0].type == "divider"
      assert sr.divider[0].value == MARKDOWN_HORIZONTAL_RULE_EXPRESSION
  
      repr(sr.divider[0])
  
imports: from datetime import date, datetime, time
  import numpy
  import pandas
  import pytest
  from streamlit.elements.markdown import MARKDOWN_HORIZONTAL_RULE_EXPRESSION
  from streamlit.testing.v1.app_test import AppTest
label_desc: Use image node_id 21 for calling a global function with example usage: test_divider() without return types