docstr: Thumbnails: Dashboard thumbnail disabled
docstr_tok: ["Thumbnails",":","Dashboard","thumbnail","disabled"]
code: def test_dashboard_thumbnail_disabled(self):
      """
      Thumbnails: Dashboard thumbnail disabled
      """
      self.login(username="admin")
      _, thumbnail_url = self._get_id_and_thumbnail_url(DASHBOARD_URL)
      rv = self.client.get(thumbnail_url)
      self.assertEqual(rv.status_code, 404)
  
imports: import json
  import urllib.request
  from io import BytesIO
  from unittest import skipUnless
  from unittest.mock import ANY, call, MagicMock, patch
  import pytest
  from flask_testing import LiveServerTestCase
  from sqlalchemy.sql import func
  from superset import db, is_feature_enabled, security_manager
  from superset.extensions import machine_auth_provider_factory
  from superset.models.dashboard import Dashboard
  from superset.models.slice import Slice
  from superset.tasks.types import ExecutorType
  from superset.utils.screenshots import ChartScreenshot, DashboardScreenshot
  from superset.utils.urls import get_url_path
  from superset.utils.webdriver import WebDriverSelenium
  from tests.integration_tests.conftest import with_feature_flags
  from tests.integration_tests.fixtures.birth_names_dashboard import load_birth_names_dashboard_with_slices, load_birth_names_data
  from tests.integration_tests.test_app import app
  from .base_tests import SupersetTestCase
label_desc: Use image node_id 2 for calling the TestThumbnails obj's underlying member method code with example usage: obj.test_dashboard_thumbnail_disabled() without return types