code: def test_file_mount_in_child_dir_to_root_dir(runner: CliRunner):
      with tempfile.TemporaryDirectory() as dir:
          os.chdir(dir)
          write_hello(f"{dir}/child/hello.txt")
          write_script(dir, "/hello.txt")
          res = runner.invoke(
              cli.app,
              ["submit", "--files", "child/hello.txt:/", "test_job.py"],
              catch_exceptions=False,
          )
          assert res.exit_code == 0, repr(
              (res.output, res.stdout, res.stderr, res.exception)
          )
  
file_path: hail/hail/python/test/hailtop/hailctl/batch/test_submit.py
imports: import os
  import pytest
  import tempfile
  from typer.testing import CliRunner
  from hailtop.hailctl.batch import cli
label_desc: Use image node_id 7 for calling a global function with example usage: test_file_mount_in_child_dir_to_root_dir(runner) without return types