'Running it on a branch with only a quotefile change gives green.'

def test_onlyQuotes(self):

    runCommand(['git', 'checkout', '-b', 'quotefile'], cwd=self.repo.path)
    fun = self.repo.child('docs').child('fun')
    fun.makedirs()
    quotes = fun.child('Twisted.Quotes')
    quotes.setContent('Beep    boop')
    runCommand(['git', 'add', quotes.path], cwd=self.repo.path)
    runCommand(['git', 'commit', '-m', 'quotes'], cwd=self.repo.path)
    logs = []
    with self.assertRaises(SystemExit) as e:
        CheckNewsfragmentScript(logs.append).main([self.repo.path])
    self.assertEqual(e.exception.args, (0,))
    self.assertEqual(logs[(-1)], 'Quotes    change    only;    no    newsfragment    needed.')
