'Even if the STATIC_ROOT setting is not set, one can still call the
`manage.py help collectstatic` command.'

@override_settings(STATIC_ROOT=None)
def test_missing_settings_dont_prevent_help(self):

    self.write_settings('settings.py', apps=['django.contrib.staticfiles'])
    (out, err) = self.run_manage(['help', 'collectstatic'])
    self.assertNoOutput(err)
