How to use the bugwarrior.config.fix_logging_path function in bugwarrior

def test_log_userhome(self):
        self.config.set('general', 'log.file', '~/bugwarrior.log')
        self.assertEqual(
            config.fix_logging_path(self.config, 'general'),
            'bugwarrior.log',
        )

def test_log_absolute_path(self):
        filename = os.path.join(os.path.expandvars('$HOME'), 'bugwarrior.log')
        self.config.set('general', 'log.file', filename)
        self.assertEqual(
            config.fix_logging_path(self.config, 'general'),
            'bugwarrior.log',
        )

def test_log_envvar(self):
        self.config.set('general', 'log.file', '$HOME/bugwarrior.log')
        self.assertEqual(
            config.fix_logging_path(self.config, 'general'),
            'bugwarrior.log',
        )

def test_log_stdout(self):
        self.assertIsNone(config.fix_logging_path(self.config, 'general'))

def test_log_relative_path(self):
        self.config.set('general', 'log.file', 'bugwarrior.log')
        self.assertEqual(
            config.fix_logging_path(self.config, 'general'),
            'bugwarrior.log',
        )