code: def test_init(self):
      ec2_operator = EC2HibernateInstanceOperator(
          task_id="task_test",
          instance_ids="i-123abc",
      )
      assert ec2_operator.task_id == "task_test"
      assert ec2_operator.instance_ids == "i-123abc"
  
imports: from __future__ import annotations
  import pytest
  from moto import mock_ec2
  from airflow.exceptions import AirflowException
  from airflow.providers.amazon.aws.hooks.ec2 import EC2Hook
  from airflow.providers.amazon.aws.operators.ec2 import EC2CreateInstanceOperator, EC2HibernateInstanceOperator, EC2RebootInstanceOperator, EC2StartInstanceOperator, EC2StopInstanceOperator, EC2TerminateInstanceOperator
label_desc: Use image node_id 1 for calling the TestEC2HibernateInstanceOperator obj's underlying member method code with example usage: obj.test_init() without return types