code: def test_regression_dashboard_no_y(
      dash_duo, precalculated_rf_regression_explainer_no_y
  ):
      db = ExplainerDashboard(
          precalculated_rf_regression_explainer_no_y,
          title="testing",
          responsive=False,
      )
      html = db.to_html()
      assert html.startswith(
          "\n<!DOCTYPE html>\n<html"
      ), "failed to generate dashboard to_html"
  
      dash_duo.start_server(db.app)
      dash_duo.wait_for_text_to_equal("h1", "testing", timeout=30)
      assert (
          dash_duo.get_logs() == []
      ), "browser console should contain no error"
  
file_path: explainerdashboard/tests/integration_tests/test_dashboards.py
imports: import pytest
  from explainerdashboard.dashboards import ExplainerDashboard
label_desc: Use image node_id 10 for calling a global function with example usage: test_regression_dashboard_no_y(dash_duo, precalculated_rf_regression_explainer_no_y) without return types