class PantsIgnoreTestBase(ProjectTreeTestBase):
  def setUp(self):
    """
    API public
    """
    self.base_dir = self.make_base_dir()
    self.root_dir = os.path.join(self.base_dir, 'root')
    # make 'root/'
    self.makedirs('')
    
    self.cwd = os.getcwd()
    os.chdir(self.root_dir)
  def tearDown(self):
    """
    API public
    """
    os.chdir(self.cwd)
    self.rmdirs(self.base_dir)
  def test_ignore_pattern_blank_line(self):
    self._project_tree = self.mk_project_tree(self.root_dir, [""])