code: def test_namespace_from_sensor(
      self, mock_get_namespaced_crd, mock_kubernetes_hook
  ):
      sensor = SparkKubernetesSensor(
          application_name="spark_pi",
          dag=self.dag,
          kubernetes_conn_id="kubernetes_with_namespace",
          namespace="sensor_namespace",
          task_id="test_task_id",
      )
      sensor.poke({})
      mock_kubernetes_hook.assert_called_once_with()
      mock_get_namespaced_crd.assert_called_once_with(
          group="sparkoperator.k8s.io",
          name="spark_pi",
          namespace="sensor_namespace",
          plural="sparkapplications",
          version="v1beta2",
      )
  
imports: from __future__ import annotations
  import json
  from unittest.mock import patch
  import pytest
  from kubernetes.client.rest import ApiException
  from airflow import DAG
  from airflow.exceptions import AirflowException, AirflowSkipException
  from airflow.models import Connection
  from airflow.providers.cncf.kubernetes.sensors.spark_kubernetes import SparkKubernetesSensor
  from airflow.utils import db, timezone
label_desc: Use image node_id 11 for calling the TestSparkKubernetesSensor obj's underlying member method code with example usage: obj.test_namespace_from_sensor(mock_get_namespaced_crd, mock_kubernetes_hook) without return types