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# Copyright 2017 ZTE Corporation.
#
# 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 json
import unittest

import mock
from rest_framework import status
from rest_framework.test import APIClient

from mgr.pub.database.models import VnfRegModel
from mgr.pub.utils import restcall


class VnfRegTest(unittest.TestCase):
    def setUp(self):
        self.client = APIClient()
        VnfRegModel.objects.filter().delete()
        self.vnfInst1 = {
            "vnfInstId": "1",
            "ip": "192.168.0.1",
            "port": "2324",
            "username": "admin",
            "password": "admin123"
        }
        self.vnfconfig = {
            "vnfInstanceId": "1",
            "vnfConfigurationData": {
                "cp": [
                    {
                        "cpId": "cp-1",
                        "cpdId": "cpd-a",
                    }
                ],
                "vnfSpecificData": {
                    "autoScalable": "FALSE",
                    "autoHealable": "FALSE"
                }
            }
        }

    def tearDown(self):
        pass

    def test_add_vnf_normal(self):
        response = self.client.post("/api/vnfmgr/v1/vnfs", self.vnfInst1, format='json')
        self.assertEqual(status.HTTP_201_CREATED, response.status_code, response.content)
        vnfs = VnfRegModel.objects.filter()
        self.assertEqual(1, len(vnfs))
        vnfInstActual = {
            "vnfInstId": vnfs[0].id,
            "ip": vnfs[0].ip,
            "port": vnfs[0].port,
            "username": vnfs[0].username,
            "password": vnfs[0].password
        }
        self.assertEqual(self.vnfInst1, vnfInstActual)

    def test_add_vnf_when_duplicate(self):
        self.client.post("/api/vnfmgr/v1/vnfs", self.vnfInst1, format='json')
        response = self.client.post("/api/vnfmgr/v1/vnfs", self.vnfInst1, format='json')
        self.assertEqual(status.HTTP_500_INTERNAL_SERVER_ERROR, response.status_code, response.content)
        self.assertEqual({'error': "Vnf(1) already exists."}, json.loads(response.content))

    def test_set_vnf_normal(self):
        self.client.post("/api/vnfmgr/v1/vnfs", self.vnfInst1, format='json')
        response = self.client.put("/api/vnfmgr/v1/vnfs/1",
                                   json.dumps(self.vnfInst1), content_type='application/json')
        self.assertEqual(status.HTTP_202_ACCEPTED, response.status_code, response.content)
        vnfs = VnfRegModel.objects.filter()
        self.assertEqual(1, len(vnfs))
        vnfInstActual = {
            "vnfInstId": vnfs[0].id,
            "ip": vnfs[0].ip,
            "port": vnfs[0].port,
            "username": vnfs[0].username,
            "password": vnfs[0].password
        }
        self.assertEqual(self.vnfInst1, vnfInstActual)

    def test_set_vnf_when_not_exist(self):
        response = self.client.put("/api/vnfmgr/v1/vnfs/1",
                                   json.dumps(self.vnfInst1), content_type='application/json')
        self.assertEqual(status.HTTP_404_NOT_FOUND, response.status_code, response.content)
        self.assertEqual({'error': "Vnf(1) does not exist."}, json.loads(response.content))

    def test_get_vnf_normal(self):
        self.client.post("/api/vnfmgr/v1/vnfs", self.vnfInst1, format='json')
        response = self.client.get("/api/vnfmgr/v1/vnfs/1")
        self.assertEqual(status.HTTP_200_OK, response.status_code, response.content)
        self.assertEqual(self.vnfInst1, json.loads(response.content))

    def test_get_vnf_when_not_exist(self):
        response = self.client.get("/api/vnfmgr/v1/vnfs/1")
        self.assertEqual(status.HTTP_404_NOT_FOUND, response.status_code, response.content)
        self.assertEqual({'error': "Vnf(1) does not exist."}, json.loads(response.content))

    def test_del_vnf_normal(self):
        self.client.post("/api/vnfmgr/v1/vnfs", self.vnfInst1, format='json')
        response = self.client.delete("/api/vnfmgr/v1/vnfs/1")
        self.assertEqual(status.HTTP_204_NO_CONTENT, response.status_code, response.content)

    def test_del_vnf_when_not_exist(self):
        response = self.client.delete("/api/vnfmgr/v1/vnfs/1")
        self.assertEqual(status.HTTP_404_NOT_FOUND, response.status_code, response.content)
        self.assertEqual({'error': "Vnf(1) does not exist."}, json.loads(response.content))

    @mock.patch.object(restcall, 'call_req')
    def test_vnf_config_normal(self, mock_call_req):
        mock_call_req.return_value = [0, "", '204']
        self.client.post("/api/vnfmgr/v1/vnfs", self.vnfInst1, format='json')
        response = self.client.post("/api/vnfmgr/v1/configuration", self.vnfconfig, format='json')
        self.assertEqual(status.HTTP_202_ACCEPTED, response.status_code, response.content)

    def test_vnf_config_when_not_exist(self):
        response = self.client.post("/api/vnfmgr/v1/configuration", self.vnfconfig, format='json')
        self.assertEqual(status.HTTP_500_INTERNAL_SERVER_ERROR, response.status_code, response.content)
        self.assertEqual({'error': "Vnf(1) does not exist."}, json.loads(response.content))


class HealthCheckViewTest(unittest.TestCase):
    def setUp(self):
        self.client = APIClient()

    def tearDown(self):
        pass

    def test_health_check(self):
        response = self.client.get("/api/vnfmgr/v1/health_check")
        self.assertEqual(status.HTTP_200_OK, response.status_code, response.content)
        resp_data = json.loads(response.content)
        self.assertEqual({"status": "active"}, resp_data)