'Making sure config file is not required.'

def test_no_config_file(self):

    instance = self._makeOne()
    instance.searchpaths = []
    exitcodes = []
    instance.exit = (lambda x: exitcodes.append(x))
    instance.realize(args=['-s', 'http://localhost:9001', '-u', 'chris', '-p', '123'])
    self.assertEqual(exitcodes, [])
    self.assertEqual(instance.interactive, 1)
    self.assertEqual(instance.serverurl, 'http://localhost:9001')
    self.assertEqual(instance.username, 'chris')
    self.assertEqual(instance.password, '123')
