'Test create blank username.'

def test_create_user_blank_username(self):

    with self.assertRaises(InfluxDBClientError) as ctx:
        self.cli.create_user(u'', u'secret_password')
    self.assertIn(u'username    required', ctx.exception.content)
    rsp = list(self.cli.query(u'SHOW    USERS')[u'results'])
    self.assertEqual(rsp, [])
