docstr: Test S3ToGCSOperator instance is properly initialized.
docstr_tok: ["Test","S3ToGCSOperator","instance","is","properly","initialized","."]
code: def test_init(self):
      """Test S3ToGCSOperator instance is properly initialized."""
  
      operator = S3ToGCSOperator(
          task_id=TASK_ID,
          bucket=S3_BUCKET,
          prefix=S3_PREFIX,
          delimiter=S3_DELIMITER,
          gcp_conn_id=GCS_CONN_ID,
          dest_gcs=GCS_PATH_PREFIX,
          google_impersonation_chain=IMPERSONATION_CHAIN,
          apply_gcs_prefix=APPLY_GCS_PREFIX,
          deferrable=DEFERRABLE,
          poll_interval=POLL_INTERVAL,
      )
  
      assert operator.task_id == TASK_ID
      assert operator.bucket == S3_BUCKET
      assert operator.prefix == S3_PREFIX
      assert operator.delimiter == S3_DELIMITER
      assert operator.gcp_conn_id == GCS_CONN_ID
      assert operator.dest_gcs == GCS_PATH_PREFIX
      assert operator.google_impersonation_chain == IMPERSONATION_CHAIN
      assert operator.apply_gcs_prefix == APPLY_GCS_PREFIX
      assert operator.deferrable == DEFERRABLE
      assert operator.poll_interval == POLL_INTERVAL
  
imports: from __future__ import annotations
  from unittest import mock
  from unittest.mock import PropertyMock
  import pytest
  import time_machine
  from airflow.exceptions import AirflowException, TaskDeferred
  from airflow.providers.google.cloud.hooks.cloud_storage_transfer_service import CloudDataTransferServiceHook
  from airflow.providers.google.cloud.transfers.s3_to_gcs import S3ToGCSOperator
  from airflow.utils.timezone import utcnow
label_desc: Use image node_id 1 for calling the TestS3ToGoogleCloudStorageOperator obj's underlying member method code with example usage: obj.test_init() without return types