code: def test_master_tags_dry_run(gcloud_run):
      runner.invoke(
          cli.app,
          ["start", "test-cluster", "--master-tags=foo", "--dry-run"],
      )
      assert gcloud_run.call_count == 0
  
imports: import pytest
  from typer.testing import CliRunner
  from hailtop.hailctl.dataproc import cli
label_desc: Use image node_id 19 for calling a global function with example usage: test_master_tags_dry_run(gcloud_run) without return types