code: def test_async(gcloud_run):
      runner.invoke(cli.app, ["stop", "test-cluster", "--async"])
      assert "--async" in gcloud_run.call_args[0][0]
  
imports: from typer.testing import CliRunner
  from hailtop.hailctl.dataproc import cli
label_desc: Use image node_id 6 for calling a global function with example usage: test_async(gcloud_run) without return types