code: def test(self):
      tmp = tempfile.mkdtemp()
  
      # Not under git control
      with work_dir(tmp):
          self.assertFalse(chainerrl.experiments.is_under_git_control())
  
      # Run: git init
      with work_dir(tmp):
          subprocess.call(["git", "init"])
  
      # Under git control
      with work_dir(tmp):
          self.assertTrue(chainerrl.experiments.is_under_git_control())
  
file_path: chainerrl/tests/experiments_tests/test_prepare_output_dir.py
imports: import contextlib
  import json
  import os
  import subprocess
  import sys
  import tempfile
  import unittest
  from chainer import testing
  import chainerrl
label_desc: Use image node_id 1 for calling the TestIsUnderGitControl obj's underlying member method code with example usage: obj.test() without return types