code: def test_bokeh_chart(app: Page):
      """Test that st.bokeh_chart renders correctly."""
      bokeh_chart_elements = app.get_by_test_id("stBokehChart")
      expect(bokeh_chart_elements).to_have_count(4)
  
      expect(
          bokeh_chart_elements.nth(0).locator("canvas").nth(0)
      ).to_be_visible()
      expect(
          bokeh_chart_elements.nth(1).locator("canvas").nth(0)
      ).to_be_visible()
      expect(
          bokeh_chart_elements.nth(2).locator("canvas").nth(0)
      ).to_be_visible()
  
      # show a bokeh slider
      expect(
          bokeh_chart_elements.nth(3).locator("canvas").nth(0)
      ).to_be_visible()
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_bokeh_chart(app) without return types