docstr: Thumbnails: Simple get async dashboard screenshot
docstr_tok: ["Thumbnails",":","Simple","get","async","dashboard","screenshot"]
code: def test_get_async_dashboard_screenshot(self):
      """
      Thumbnails: Simple get async dashboard screenshot
      """
      with patch(
          "superset.dashboards.api.DashboardRestApi.get"
      ) as mock_get:
          rv = self.client.get(DASHBOARD_URL)
          resp = json.loads(rv.data.decode("utf-8"))
          thumbnail_url = resp["result"][0]["thumbnail_url"]
  
          response = self.url_open_auth(
              "admin",
              thumbnail_url,
          )
          self.assertEqual(response.getcode(), 202)
  
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 3 for calling the TestThumbnailsSeleniumLive obj's underlying member method code with example usage: obj.test_get_async_dashboard_screenshot() without return types