text: """The tests for the Transport NSW (AU) sensor platform."""
  import unittest
  
  from homeassistant.setup import setup_component
  
  from tests.async_mock import patch
  from tests.common import get_test_home_assistant
  
  VALID_CONFIG = {
      "sensor": {
          "platform": "transport_nsw",
          "stop_id": "209516",
          "route": "199",
          "destination": "",
          "api_key": "YOUR_API_KEY",
      }
  }
  
  
  def get_departuresMock(_stop_id, route, destination, api_key):
      """Mock TransportNSW departures loading."""
      data = {
          "stop_id": "209516",
          "route": "199",
          "due": 16,
          "delay": 6,
          "real_time": "y",
          "destination": "Palm Beach",
          "mode": "Bus",
      }
      return data
  
  
  class TestRMVtransportSensor(unittest.TestCase):
      """Test the TransportNSW sensor."""
  
      def setUp(self):
          """Set up things to run when tests begin."""
          self.hass = get_test_home_assistant()
          self.addCleanup(self.hass.stop)
  
      @patch("TransportNSW.TransportNSW.get_departures", side_effect=get_departuresMock)
      def test_transportnsw_config(self, mock_get_departures):
          """Test minimal TransportNSW configuration."""
          assert setup_component(self.hass, "sensor", VALID_CONFIG)
          self.hass.block_till_done()
          state = self.hass.states.get("sensor.next_bus")
          assert state.state == "16"
          assert state.attributes["stop_id"] == "209516"
          assert state.attributes["route"] == "199"
          assert state.attributes["delay"] == 6
          assert state.attributes["real_time"] == "y"
          assert state.attributes["destination"] == "Palm Beach"
          assert state.attributes["mode"] == "Bus"
  