code: def test_defer(self, client_mock):
      client_mock.create_compute_environment.return_value = {
          "computeEnvironmentArn": "my_arn"
      }
  
      operator = BatchCreateComputeEnvironmentOperator(
          task_id="task",
          compute_environment_name="my_env_name",
          environment_type="my_env_type",
          state="my_state",
          compute_resources={},
          max_retries=123456,
          poll_interval=456789,
          deferrable=True,
      )
  
      with pytest.raises(TaskDeferred) as deferred:
          operator.execute(None)
  
      assert isinstance(
          deferred.value.trigger, BatchCreateComputeEnvironmentTrigger
      )
      assert deferred.value.trigger.waiter_delay == 456789
      assert deferred.value.trigger.attempts == 123456
  
imports: from __future__ import annotations
  from unittest import mock
  from unittest.mock import patch
  import pytest
  from airflow.exceptions import AirflowException, AirflowProviderDeprecationWarning, TaskDeferred
  from airflow.providers.amazon.aws.hooks.batch_client import BatchClientHook
  from airflow.providers.amazon.aws.operators.batch import BatchCreateComputeEnvironmentOperator, BatchOperator
  from airflow.providers.amazon.aws.triggers.batch import BatchCreateComputeEnvironmentTrigger, BatchJobTrigger
label_desc: Use image node_id 2 for calling the TestBatchCreateComputeEnvironmentOperator obj's underlying member method code with example usage: obj.test_defer(client_mock) without return types