code: def test_eta_string(
      current_iter, n_iters, status, creation_time_delta, expected
  ):
      job = Job(
          id=UID(),
          node_uid=UID(),
          n_iters=n_iters,
          current_iter=current_iter,
          creation_time=(
              datetime.now() - creation_time_delta
          ).isoformat(),
          status=status,
      )
  
      if expected is None:
          assert job.eta_string is None
      else:
          assert job.eta_string is not None
          assert isinstance(job.eta_string, str)
          assert expected in job.eta_string
  
imports: from datetime import datetime
  from datetime import timedelta
  import pytest
  from syft.service.job.job_stash import Job
  from syft.service.job.job_stash import JobStatus
  from syft.types.uid import UID
label_desc: Use image node_id 1 for calling a global function with example usage: test_eta_string(current_iter, n_iters, status, creation_time_delta, expected) without return types