code: def test_clusters_region(gcloud_run):
      runner.invoke(cli.app, ["list", "--region=europe-north1"])
      assert "--region=europe-north1" 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 3 for calling a global function with example usage: test_clusters_region(gcloud_run) without return types