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# Copyright (c) 2017 Intel Corporation, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import mock
import unittest

from django.test import Client
from rest_framework import status

from newton.requests.views.util import VimDriverUtils
from newton.requests.tests import mock_info
from newton.requests.tests import test_base


MOCK_GET_NETWORKS_RESPONSE = {
    "networks": [
        {"name": "network_1"},
        {"name": "network_2"}
    ]
}

MOCK_GET_NETWORK_RESPONSE = {
    "network": {
        "network_id": "f5dc173b-6804-445a-a6d8-c705dad5b5eb",
        "name": "network_3"
    }
}

MOCK_POST_NETWORK_REQUEST = {
    "name": "network_3"
}

MOCK_POST_NETWORK_REQUEST_EXISTING = {
    "name": "network_1"
}

MOCK_POST_NETWORK_RESPONSE = {
    "network": {
        "network_id": "f5dc173b-6804-445a-a6d8-c705dad5b5eb"
    }
}


class TestNetwork(unittest.TestCase):
   def setUp(self):
      self.client = Client()

   def tearDown(self):
      pass

   @mock.patch.object(VimDriverUtils, 'get_session')
   @mock.patch.object(VimDriverUtils, 'get_vim_info')
   def test_get_networks(self, mock_get_vim_info, mock_get_session):

       mock_get_session.side_effect = [
           test_base.get_mock_session(
               ["get"], {"get": {"content": MOCK_GET_NETWORKS_RESPONSE}}),
       ]

       mock_get_vim_info.return_value = mock_info.MOCK_VIM_INFO

       response = self.client.get(
         "/api/multicloud-newton/v0/windriver-hudson-dc_RegionOne/fcca3cc49d5e42caae15459e27103efc/networks",
          {}, HTTP_X_AUTH_TOKEN=mock_info.MOCK_TOKEN_ID)

       context = response.json()
       self.assertEquals(status.HTTP_200_OK, response.status_code)
       self.assertIsNotNone(context['networks'])
       self.assertEqual(MOCK_GET_NETWORKS_RESPONSE["networks"], context['networks'])

   @mock.patch.object(VimDriverUtils, 'get_session')
   @mock.patch.object(VimDriverUtils, 'get_vim_info')
   def test_get_network(self, mock_get_vim_info, mock_get_session):

       mock_get_session.side_effect = [
           test_base.get_mock_session(
               ["get"], {"get": {"content": MOCK_GET_NETWORK_RESPONSE}}),
       ]

       mock_get_vim_info.return_value = mock_info.MOCK_VIM_INFO

       response = self.client.get(
           "/api/multicloud-newton/v0/windriver-hudson-dc_RegionOne/fcca3cc49d5e42caae15459e27103efc"
           "/networks/f5dc173b-6804-445a-a6d8-c705dad5b5eb",
           {}, HTTP_X_AUTH_TOKEN=mock_info.MOCK_TOKEN_ID)

       context = response.json()
       self.assertEquals(status.HTTP_200_OK, response.status_code)
       self.assertEquals(MOCK_GET_NETWORK_RESPONSE['network_id'], context['network_id'])

   @mock.patch.object(VimDriverUtils, 'get_session')
   @mock.patch.object(VimDriverUtils, 'get_vim_info')
   def test_get_network_not_found(self, mock_get_vim_info, mock_get_session):

       mock_get_session.side_effect = [
           test_base.get_mock_session(
               ["get"], {"get": {"content": {},
                                 "status_code": 404}}),
       ]

       mock_get_vim_info.return_value = mock_info.MOCK_VIM_INFO

       response = self.client.get(
           "/api/multicloud-newton/v0/windriver-hudson-dc_RegionOne/fcca3cc49d5e42caae15459e27103efc"
           "/networks/f5dc173b-6804-445a-a6d8-c705dad5b5eb",
           {}, HTTP_X_AUTH_TOKEN=mock_info.MOCK_TOKEN_ID)

       # TODO(sshank): 404 status is not possible.
       self.assertEquals(status.HTTP_500_INTERNAL_SERVER_ERROR, response.status_code)
       self.assertIn('error', response.data)

   @mock.patch.object(VimDriverUtils, 'get_session')
   @mock.patch.object(VimDriverUtils, 'get_vim_info')
   def test_post(self, mock_get_vim_info, mock_get_session):

       mock_get_session.side_effect = [
           test_base.get_mock_session(
               ["get"], {"get": {"content": MOCK_GET_NETWORKS_RESPONSE}}),
           test_base.get_mock_session(
               ["post"], {"post": {"content": MOCK_POST_NETWORK_RESPONSE,
                                   "status_code": 202}}),
       ]

       mock_get_vim_info.return_value = mock_info.MOCK_VIM_INFO

       response = self.client.post(
           "/api/multicloud-newton/v0/windriver-hudson-dc_RegionOne/fcca3cc49d5e42caae15459e27103efc/networks",
           MOCK_POST_NETWORK_REQUEST, HTTP_X_AUTH_TOKEN=mock_info.MOCK_TOKEN_ID)

       context = response.json()
       self.assertEquals(status.HTTP_202_ACCEPTED, response.status_code)
       self.assertIsNotNone(context['network_id'])
       self.assertEqual(1, context['returnCode'])

   @mock.patch.object(VimDriverUtils, 'get_session')
   @mock.patch.object(VimDriverUtils, 'get_vim_info')
   def test_post_existing(self, mock_get_vim_info, mock_get_session):

       mock_get_session.side_effect = [
           test_base.get_mock_session(
               ["get"], {"get": {"content": MOCK_GET_NETWORKS_RESPONSE}}),
           test_base.get_mock_session(
               ["post"], {"post": {"content": MOCK_POST_NETWORK_RESPONSE,
                                   "status_code": 202}}),
       ]

       mock_get_vim_info.return_value = mock_info.MOCK_VIM_INFO

       response = self.client.post(
           "/api/multicloud-newton/v0/windriver-hudson-dc_RegionOne/fcca3cc49d5e42caae15459e27103efc/networks",
           MOCK_POST_NETWORK_REQUEST_EXISTING, HTTP_X_AUTH_TOKEN=mock_info.MOCK_TOKEN_ID)

       context = response.json()
       self.assertEquals(status.HTTP_200_OK, response.status_code)
       self.assertIsNotNone(context['returnCode'])
       self.assertEqual(0, context['returnCode'])

   @mock.patch.object(VimDriverUtils, 'get_session')
   @mock.patch.object(VimDriverUtils, 'get_vim_info')
   def test_post_empty_body(self, mock_get_vim_info, mock_get_session):

       mock_get_session.side_effect = [
           test_base.get_mock_session(
               ["get"], {"get": {"content": MOCK_GET_NETWORKS_RESPONSE}}),
           test_base.get_mock_session(
               ["post"], {"post": {"content": MOCK_POST_NETWORK_RESPONSE,
                                   "status_code": 202}}),
       ]

       mock_get_vim_info.return_value = mock_info.MOCK_VIM_INFO

       response = self.client.post(
           "/api/multicloud-newton/v0/windriver-hudson-dc_RegionOne/fcca3cc49d5e42caae15459e27103efc/networks",
           {}, HTTP_X_AUTH_TOKEN=mock_info.MOCK_TOKEN_ID)

       context = response.json()
       self.assertIn('error', context)
       self.assertEquals(status.HTTP_500_INTERNAL_SERVER_ERROR, response.status_code)

   @mock.patch.object(VimDriverUtils, 'get_session')
   @mock.patch.object(VimDriverUtils, 'get_vim_info')
   def test_delete(self, mock_get_vim_info, mock_get_session):
       mock_get_session.side_effect = [
           test_base.get_mock_session(
               ["delete"], {"delete": {"content": {},
                                       "status_code": 204}})
       ]

       mock_get_vim_info.return_value = mock_info.MOCK_VIM_INFO

       response = self.client.delete(
           "/api/multicloud-newton/v0/windriver-hudson-dc_RegionOne/fcca3cc49d5e42caae15459e27103efc"
           "/networks/f5dc173b-6804-445a-a6d8-c705dad5b5eb",
           HTTP_X_AUTH_TOKEN=mock_info.MOCK_TOKEN_ID)

       self.assertEqual(status.HTTP_204_NO_CONTENT, response.status_code)
       self.assertIsNone(response.data)