#!/usr/bin/env python

##############################################################################
# Copyright (c) 2016 Huawei Technologies Co.,Ltd and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################

# Unittest for
# yardstick.benchmark.scenarios.networking.networkcapacity.NetworkCapacity

from __future__ import absolute_import

import unittest

import mock
from oslo_serialization import jsonutils

from yardstick.benchmark.scenarios.networking import networkcapacity

SAMPLE_OUTPUT = \
    '{"Number of connections":"308","Number of frames received": "166503"}'


@mock.patch('yardstick.benchmark.scenarios.networking.networkcapacity.ssh')
class NetworkCapacityTestCase(unittest.TestCase):

    def setUp(self):
        self.ctx = {
            'host': {
                'ip': '172.16.0.137',
                'user': 'cirros',
                'password': "root"
            },
        }

        self.result = {}

    def test_capacity_successful_setup(self, mock_ssh):
        c = networkcapacity.NetworkCapacity({}, self.ctx)
        mock_ssh.SSH.from_node().execute.return_value = (0, '', '')
        c.setup()
        self.assertIsNotNone(c.client)
        self.assertTrue(c.setup_done)

    def test_capacity_successful(self, mock_ssh):
        c = networkcapacity.NetworkCapacity({}, self.ctx)

        mock_ssh.SSH.from_node().execute.return_value = (0, SAMPLE_OUTPUT, '')
        c.run(self.result)
        expected_result = jsonutils.loads(SAMPLE_OUTPUT)
        self.assertEqual(self.result, expected_result)

    def test_capacity_unsuccessful_script_error(self, mock_ssh):
        c = networkcapacity.NetworkCapacity({}, self.ctx)

        mock_ssh.SSH.from_node().execute.return_value = (1, '', 'FOOBAR')
        self.assertRaises(RuntimeError, c.run, self.result)