yardstick/tests/unit/network_services/vnf_generic/vnf/test_acl_vnf.py

   1 # Copyright (c) 2016-2017 Intel Corporation
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #      http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14 #
  15
  16 import unittest
  17 import mock
  18 import os
  19 import re
  20 import copy
  21
  22 from yardstick.tests import STL_MOCKS
  23 from yardstick.tests.unit.network_services.vnf_generic.vnf.test_base import mock_ssh
  24 from yardstick.common import utils
  25 from yardstick.common import exceptions
  26
  27
  28 STLClient = mock.MagicMock()
  29 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
  30 stl_patch.start()
  31
  32 if stl_patch:
  33     from yardstick.network_services.vnf_generic.vnf.acl_vnf import AclApproxVnf
  34     from yardstick.network_services.vnf_generic.vnf.base import VnfdHelper
  35     from yardstick.network_services.nfvi.resource import ResourceProfile
  36     from yardstick.network_services.vnf_generic.vnf.acl_vnf import AclApproxSetupEnvSetupEnvHelper
  37
  38
  39 TEST_FILE_YAML = 'nsb_test_case.yaml'
  40 SSH_HELPER = 'yardstick.network_services.vnf_generic.vnf.sample_vnf.VnfSshHelper'
  41
  42
  43 name = 'vnf__1'
  44
  45
  46 @mock.patch("yardstick.network_services.vnf_generic.vnf.sample_vnf.Process")
  47 class TestAclApproxVnf(unittest.TestCase):
  48     VNFD = {'vnfd:vnfd-catalog':
  49             {'vnfd':
  50              [{'short-name': 'VpeVnf',
  51                'vdu':
  52                [{'routing_table':
  53                  [{'network': '152.16.100.20',
  54                    'netmask': '255.255.255.0',
  55                    'gateway': '152.16.100.20',
  56                    'if': 'xe0'},
  57                   {'network': '152.16.40.20',
  58                    'netmask': '255.255.255.0',
  59                    'gateway': '152.16.40.20',
  60                    'if': 'xe1'}],
  61                  'description': 'VPE approximation using DPDK',
  62                  'name': 'vpevnf-baremetal',
  63                  'nd_route_tbl':
  64                  [{'network': '0064:ff9b:0:0:0:0:9810:6414',
  65                    'netmask': '112',
  66                    'gateway': '0064:ff9b:0:0:0:0:9810:6414',
  67                    'if': 'xe0'},
  68                   {'network': '0064:ff9b:0:0:0:0:9810:2814',
  69                    'netmask': '112',
  70                    'gateway': '0064:ff9b:0:0:0:0:9810:2814',
  71                    'if': 'xe1'}],
  72                  'id': 'vpevnf-baremetal',
  73                  'external-interface':
  74                  [{'virtual-interface':
  75                    {'dst_mac': '00:00:00:00:00:04',
  76                     'vpci': '0000:05:00.0',
  77                     'local_ip': '152.16.100.19',
  78                     'type': 'PCI-PASSTHROUGH',
  79                     'netmask': '255.255.255.0',
  80                     'dpdk_port_num': 0,
  81                     'bandwidth': '10 Gbps',
  82                     'driver': "i40e",
  83                     'dst_ip': '152.16.100.20',
  84                     'local_iface_name': 'xe0',
  85                     'local_mac': '00:00:00:00:00:02'},
  86                    'vnfd-connection-point-ref': 'xe0',
  87                    'name': 'xe0'},
  88                   {'virtual-interface':
  89                    {'dst_mac': '00:00:00:00:00:03',
  90                     'vpci': '0000:05:00.1',
  91                     'local_ip': '152.16.40.19',
  92                     'type': 'PCI-PASSTHROUGH',
  93                     'driver': "i40e",
  94                     'netmask': '255.255.255.0',
  95                     'dpdk_port_num': 1,
  96                     'bandwidth': '10 Gbps',
  97                     'dst_ip': '152.16.40.20',
  98                     'local_iface_name': 'xe1',
  99                     'local_mac': '00:00:00:00:00:01'},
 100                    'vnfd-connection-point-ref': 'xe1',
 101                    'name': 'xe1'}]}],
 102                'description': 'Vpe approximation using DPDK',
 103                'mgmt-interface':
 104                    {'vdu-id': 'vpevnf-baremetal',
 105                     'host': '1.2.1.1',
 106                     'password': 'r00t',
 107                     'user': 'root',
 108                     'ip': '1.2.1.1'},
 109                'benchmark':
 110                    {'kpi': ['packets_in', 'packets_fwd', 'packets_dropped']},
 111                'connection-point': [{'type': 'VPORT', 'name': 'xe0'},
 112                                     {'type': 'VPORT', 'name': 'xe1'}],
 113                'id': 'AclApproxVnf', 'name': 'VPEVnfSsh'}]}}
 114
 115     scenario_cfg = {'options': {'packetsize': 64, 'traffic_type': 4,
 116                                 'rfc2544': {'allowed_drop_rate': '0.8 - 1'},
 117                                 'vnf__1': {'rules': 'acl_1rule.yaml',
 118                                            'vnf_config': {'lb_config': 'SW',
 119                                                           'lb_count': 1,
 120                                                           'worker_config':
 121                                                           '1C/1T',
 122                                                           'worker_threads': 1}}
 123                                 },
 124                     'task_id': 'a70bdf4a-8e67-47a3-9dc1-273c14506eb7',
 125                     'task_path': '/tmp',
 126                     'tc': 'tc_ipv4_1Mflow_64B_packetsize',
 127                     'runner': {'object': 'NetworkServiceTestCase',
 128                                'interval': 35,
 129                                'output_filename': '/tmp/yardstick.out',
 130                                'runner_id': 74476, 'duration': 400,
 131                                'type': 'Duration'},
 132                     'traffic_profile': 'ipv4_throughput_acl.yaml',
 133                     'traffic_options': {'flow': 'ipv4_Packets_acl.yaml',
 134                                         'imix': 'imix_voice.yaml'},
 135                     'type': 'ISB',
 136                     'nodes': {'tg__2': 'trafficgen_2.yardstick',
 137                               'tg__1': 'trafficgen_1.yardstick',
 138                               'vnf__1': 'vnf.yardstick'},
 139                     'topology': 'vpe-tg-topology-baremetal.yaml'}
 140
 141     context_cfg = {'nodes': {'tg__2':
 142                              {'member-vnf-index': '3',
 143                               'role': 'TrafficGen',
 144                               'name': 'trafficgen_2.yardstick',
 145                               'vnfd-id-ref': 'tg__2',
 146                               'ip': '1.2.1.1',
 147                               'interfaces':
 148                               {'xe0': {'local_iface_name': 'ens513f0',
 149                                        'vld_id': AclApproxVnf.DOWNLINK,
 150                                        'netmask': '255.255.255.0',
 151                                        'local_ip': '152.16.40.20',
 152                                        'dst_mac': '00:00:00:00:00:01',
 153                                        'local_mac': '00:00:00:00:00:03',
 154                                        'dst_ip': '152.16.40.19',
 155                                        'driver': 'ixgbe',
 156                                        'vpci': '0000:02:00.0',
 157                                        'dpdk_port_num': 0},
 158                                'xe1': {'local_iface_name': 'ens513f1',
 159                                        'netmask': '255.255.255.0',
 160                                        'network': '202.16.100.0',
 161                                        'local_ip': '202.16.100.20',
 162                                        'local_mac': '00:1e:67:d0:60:5d',
 163                                        'driver': 'ixgbe',
 164                                        'vpci': '0000:02:00.1',
 165                                        'dpdk_port_num': 1}},
 166                               'password': 'r00t',
 167                               'VNF model': 'l3fwd_vnf.yaml',
 168                               'user': 'root'},
 169                              'tg__1':
 170                              {'member-vnf-index': '1',
 171                               'role': 'TrafficGen',
 172                               'name': 'trafficgen_1.yardstick',
 173                               'vnfd-id-ref': 'tg__1',
 174                               'ip': '1.2.1.1',
 175                               'interfaces':
 176                               {'xe0': {'local_iface_name': 'ens785f0',
 177                                        'vld_id': AclApproxVnf.UPLINK,
 178                                        'netmask': '255.255.255.0',
 179                                        'local_ip': '152.16.100.20',
 180                                        'dst_mac': '00:00:00:00:00:02',
 181                                        'local_mac': '00:00:00:00:00:04',
 182                                        'dst_ip': '152.16.100.19',
 183                                        'driver': 'i40e',
 184                                        'vpci': '0000:05:00.0',
 185                                        'dpdk_port_num': 0},
 186                                'xe1': {'local_iface_name': 'ens785f1',
 187                                        'netmask': '255.255.255.0',
 188                                        'local_ip': '152.16.100.21',
 189                                        'local_mac': '00:00:00:00:00:01',
 190                                        'driver': 'i40e',
 191                                        'vpci': '0000:05:00.1',
 192                                        'dpdk_port_num': 1}},
 193                               'password': 'r00t',
 194                               'VNF model': 'tg_rfc2544_tpl.yaml',
 195                               'user': 'root'},
 196                              'vnf__1':
 197                              {'name': 'vnf.yardstick',
 198                               'vnfd-id-ref': 'vnf__1',
 199                               'ip': '1.2.1.1',
 200                               'interfaces':
 201                               {'xe0': {'local_iface_name': 'ens786f0',
 202                                        'vld_id': AclApproxVnf.UPLINK,
 203                                        'netmask': '255.255.255.0',
 204                                        'local_ip': '152.16.100.19',
 205                                        'dst_mac': '00:00:00:00:00:04',
 206                                        'local_mac': '00:00:00:00:00:02',
 207                                        'dst_ip': '152.16.100.20',
 208                                        'driver': 'i40e',
 209                                        'vpci': '0000:05:00.0',
 210                                        'dpdk_port_num': 0},
 211                                'xe1': {'local_iface_name': 'ens786f1',
 212                                        'vld_id': AclApproxVnf.DOWNLINK,
 213                                        'netmask': '255.255.255.0',
 214                                        'local_ip': '152.16.40.19',
 215                                        'dst_mac': '00:00:00:00:00:03',
 216                                        'local_mac': '00:00:00:00:00:01',
 217                                        'dst_ip': '152.16.40.20',
 218                                        'driver': 'i40e',
 219                                        'vpci': '0000:05:00.1',
 220                                        'dpdk_port_num': 1}},
 221                               'routing_table':
 222                               [{'netmask': '255.255.255.0',
 223                                 'gateway': '152.16.100.20',
 224                                 'network': '152.16.100.20',
 225                                 'if': 'xe0'},
 226                                {'netmask': '255.255.255.0',
 227                                 'gateway': '152.16.40.20',
 228                                 'network': '152.16.40.20',
 229                                 'if': 'xe1'}],
 230                               'member-vnf-index': '2',
 231                               'host': '1.2.1.1',
 232                               'role': 'vnf',
 233                               'user': 'root',
 234                               'nd_route_tbl':
 235                               [{'netmask': '112',
 236                                 'gateway': '0064:ff9b:0:0:0:0:9810:6414',
 237                                 'network': '0064:ff9b:0:0:0:0:9810:6414',
 238                                 'if': 'xe0'},
 239                                {'netmask': '112',
 240                                 'gateway': '0064:ff9b:0:0:0:0:9810:2814',
 241                                 'network': '0064:ff9b:0:0:0:0:9810:2814',
 242                                 'if': 'xe1'}],
 243                               'password': 'r00t',
 244                               'VNF model': 'acl_vnf.yaml'}}}
 245
 246     def test___init__(self, *args):
 247         vnfd = self.VNFD['vnfd:vnfd-catalog']['vnfd'][0]
 248         acl_approx_vnf = AclApproxVnf(name, vnfd)
 249         self.assertIsNone(acl_approx_vnf._vnf_process)
 250
 251     @mock.patch("yardstick.network_services.vnf_generic.vnf.sample_vnf.time")
 252     @mock.patch(SSH_HELPER)
 253     def test_collect_kpi(self, ssh, *args):
 254         mock_ssh(ssh)
 255
 256         vnfd = self.VNFD['vnfd:vnfd-catalog']['vnfd'][0]
 257         acl_approx_vnf = AclApproxVnf(name, vnfd)
 258         acl_approx_vnf.q_in = mock.MagicMock()
 259         acl_approx_vnf.q_out = mock.MagicMock()
 260         acl_approx_vnf.q_out.qsize = mock.Mock(return_value=0)
 261         acl_approx_vnf.resource = mock.Mock(autospec=ResourceProfile)
 262         acl_approx_vnf.vnf_execute = mock.Mock(return_value="")
 263         result = {'packets_dropped': 0, 'packets_fwd': 0, 'packets_in': 0}
 264         self.assertEqual(result, acl_approx_vnf.collect_kpi())
 265
 266     @mock.patch("yardstick.network_services.vnf_generic.vnf.sample_vnf.time")
 267     @mock.patch(SSH_HELPER)
 268     def test_vnf_execute_command(self, ssh, *args):
 269         mock_ssh(ssh)
 270
 271         vnfd = self.VNFD['vnfd:vnfd-catalog']['vnfd'][0]
 272         acl_approx_vnf = AclApproxVnf(name, vnfd)
 273         acl_approx_vnf.q_in = mock.MagicMock()
 274         acl_approx_vnf.q_out = mock.MagicMock()
 275         acl_approx_vnf.q_out.qsize = mock.Mock(return_value=0)
 276         cmd = "quit"
 277         self.assertEqual("", acl_approx_vnf.vnf_execute(cmd))
 278
 279     @mock.patch(SSH_HELPER)
 280     def test_get_stats(self, ssh, *args):
 281         mock_ssh(ssh)
 282
 283         vnfd = self.VNFD['vnfd:vnfd-catalog']['vnfd'][0]
 284         acl_approx_vnf = AclApproxVnf(name, vnfd)
 285         acl_approx_vnf.q_in = mock.MagicMock()
 286         acl_approx_vnf.q_out = mock.MagicMock()
 287         acl_approx_vnf.q_out.qsize = mock.Mock(return_value=0)
 288         result = "ACL TOTAL: pkts_processed: 100, pkts_drop: 0, spkts_received: 100"
 289         acl_approx_vnf.vnf_execute = mock.Mock(return_value=result)
 290         self.assertEqual(result, acl_approx_vnf.get_stats())
 291
 292     def _get_file_abspath(self, filename):
 293         curr_path = os.path.dirname(os.path.abspath(__file__))
 294         file_path = os.path.join(curr_path, filename)
 295         return file_path
 296
 297     @mock.patch("yardstick.network_services.vnf_generic.vnf.acl_vnf.hex")
 298     @mock.patch("yardstick.network_services.vnf_generic.vnf.acl_vnf.eval")
 299     @mock.patch('yardstick.network_services.vnf_generic.vnf.acl_vnf.open')
 300     @mock.patch(SSH_HELPER)
 301     def test_run_acl(self, ssh, *args):
 302         mock_ssh(ssh)
 303
 304         vnfd = self.VNFD['vnfd:vnfd-catalog']['vnfd'][0]
 305         acl_approx_vnf = AclApproxVnf(name, vnfd)
 306         acl_approx_vnf._build_config = mock.MagicMock()
 307         acl_approx_vnf.queue_wrapper = mock.MagicMock()
 308         acl_approx_vnf.scenario_helper.scenario_cfg = self.scenario_cfg
 309         acl_approx_vnf.vnf_cfg = {'lb_config': 'SW',
 310                                   'lb_count': 1,
 311                                   'worker_config': '1C/1T',
 312                                   'worker_threads': 1}
 313         acl_approx_vnf.all_options = {'traffic_type': '4',
 314                                       'topology': 'nsb_test_case.yaml'}
 315         acl_approx_vnf._run()
 316         acl_approx_vnf.ssh_helper.run.assert_called_once()
 317
 318     @mock.patch.object(utils, 'find_relative_file')
 319     @mock.patch("yardstick.network_services.vnf_generic.vnf.sample_vnf.Context")
 320     @mock.patch(SSH_HELPER)
 321     def test_instantiate(self, ssh, *args):
 322         mock_ssh(ssh)
 323
 324         vnfd = self.VNFD['vnfd:vnfd-catalog']['vnfd'][0]
 325         acl_approx_vnf = AclApproxVnf(name, vnfd)
 326         acl_approx_vnf.deploy_helper = mock.MagicMock()
 327         acl_approx_vnf.resource_helper = mock.MagicMock()
 328         acl_approx_vnf._build_config = mock.MagicMock()
 329         self.scenario_cfg['vnf_options'] = {'acl': {'cfg': "",
 330                                                     'rules': ""}}
 331         acl_approx_vnf.q_out.put("pipeline>")
 332         acl_approx_vnf.WAIT_TIME = 0
 333         self.scenario_cfg.update({"nodes": {"vnf__1": ""}})
 334         self.assertIsNone(acl_approx_vnf.instantiate(self.scenario_cfg,
 335                                                      self.context_cfg))
 336
 337     @mock.patch("yardstick.network_services.vnf_generic.vnf.sample_vnf.time")
 338     @mock.patch(SSH_HELPER)
 339     def test_terminate(self, ssh, *args):
 340         mock_ssh(ssh)
 341
 342         vnfd = self.VNFD['vnfd:vnfd-catalog']['vnfd'][0]
 343         acl_approx_vnf = AclApproxVnf(name, vnfd)
 344         acl_approx_vnf._vnf_process = mock.MagicMock()
 345         acl_approx_vnf._vnf_process.terminate = mock.Mock()
 346         acl_approx_vnf.used_drivers = {"01:01.0": "i40e",
 347                                        "01:01.1": "i40e"}
 348         acl_approx_vnf.vnf_execute = mock.MagicMock()
 349         acl_approx_vnf.dpdk_devbind = "dpdk-devbind.py"
 350         acl_approx_vnf._resource_collect_stop = mock.Mock()
 351         self.assertIsNone(acl_approx_vnf.terminate())
 352
 353
 354 class TestAclApproxSetupEnvSetupEnvHelper(unittest.TestCase):
 355
 356     ACL_CONFIG = {"access-list-entries": [{
 357                      "actions": [
 358                        "count",
 359                        {"fwd": {
 360                            "port": 0
 361                          }
 362                        }
 363                      ],
 364                      "matches": {
 365                        "destination-ipv4-network": "152.16.0.0/24",
 366                        "destination-port-range": {
 367                          "lower-port": 0,
 368                          "upper-port": 65535
 369                        },
 370                        "source-ipv4-network": "0.0.0.0/0",
 371                        "source-port-range": {
 372                          "lower-port": 0,
 373                          "upper-port": 65535
 374                        },
 375                        "protocol-mask": 255,
 376                        "protocol": 127,
 377                        "priority": 1
 378                      },
 379                      "rule-name": "rule1588"
 380                    }
 381                  ]}
 382
 383     def test_get_default_flows(self):
 384         """Check if default ACL SampleVNF CLI commands are
 385         generated correctly"""
 386         ssh_helper = mock.Mock()
 387         vnfd_helper = VnfdHelper({'vdu': [
 388             {'external-interface': [
 389                 {
 390                     'virtual-interface': {
 391                         'local_ip': '152.16.100.19',
 392                         'netmask': '255.255.255.0',
 393                         'dpdk_port_num': 0,
 394                         'dst_ip': '152.16.100.20',
 395                         'vld_id': 'uplink_0',
 396                         'ifname': 'xe0',
 397                     },
 398                     'vnfd-connection-point-ref': 'xe0',
 399                     'name': 'xe0'
 400                 },
 401                 {
 402                     'virtual-interface': {
 403                         'local_ip': '152.16.40.19',
 404                         'netmask': '255.255.255.0',
 405                         'dpdk_port_num': 1,
 406                         'dst_ip': '152.16.40.20',
 407                         'vld_id': 'downlink_0',
 408                         'ifname': 'xe1',
 409                     },
 410                     'vnfd-connection-point-ref': 'xe1',
 411                     'name': 'xe1'
 412                 }
 413             ]}
 414         ]})
 415         setup_helper = AclApproxSetupEnvSetupEnvHelper(vnfd_helper, ssh_helper, None)
 416         self.check_acl_commands(setup_helper.get_flows_config(), [
 417             # format: (<cli pattern>, <number of expected matches>)
 418             ("^p action add [0-9]+ accept$", 2),
 419             ("^p action add [0-9]+ count$", 2),
 420             ("^p action add [0-9]+ fwd 1$", 1),
 421             ("^p action add [0-9]+ fwd 0$", 1),
 422             ("^p acl add 1 152.16.100.0 24 152.16.40.0 24 0 65535 0 65535 0 0 [0-9]+$", 1),
 423             ("^p acl add 1 152.16.40.0 24 152.16.100.0 24 0 65535 0 65535 0 0 [0-9]+$", 1),
 424             ("^p acl applyruleset$", 1)
 425         ])
 426
 427     @mock.patch.object(AclApproxSetupEnvSetupEnvHelper, 'get_default_flows')
 428     def test_get_flows_config(self, get_default_flows):
 429         """Check if provided ACL config can be converted to
 430         ACL SampleVNF CLI commands correctly"""
 431         ssh_helper = mock.Mock()
 432         setup_helper = AclApproxSetupEnvSetupEnvHelper(None, ssh_helper, None)
 433         get_default_flows.return_value = ({}, [])
 434         self.check_acl_commands(setup_helper.get_flows_config(self.ACL_CONFIG), [
 435             # format: (<cli pattern>, <number of expected matches>)
 436             ("^p action add [0-9]+ count$", 1),
 437             ("^p action add [0-9]+ fwd 0$", 1),
 438             ("^p acl add 1 0.0.0.0 0 152.16.0.0 24 0 65535 0 65535 127 0 [0-9]+$", 1),
 439             ("^p acl applyruleset$", 1)
 440         ])
 441
 442     @mock.patch.object(AclApproxSetupEnvSetupEnvHelper, 'get_default_flows')
 443     def test_get_flows_config_invalid_action(self, get_default_flows):
 444         """Check if incorrect ACL config fails to convert
 445         to ACL SampleVNF CLI commands"""
 446         ssh_helper = mock.Mock()
 447         setup_helper = AclApproxSetupEnvSetupEnvHelper(None, ssh_helper, None)
 448         get_default_flows.return_value = ({}, [])
 449         # duplicate config and add invald action
 450         acl_config = copy.deepcopy(self.ACL_CONFIG)
 451         acl_config['access-list-entries'][0]["actions"].append({"xnat": {}})
 452         self.assertRaises(exceptions.AclUknownActionTemplate,
 453             setup_helper.get_flows_config, acl_config)
 454
 455     @mock.patch.object(AclApproxSetupEnvSetupEnvHelper, 'get_default_flows')
 456     def test_get_flows_config_invalid_action_param(self, get_default_flows):
 457         """Check if ACL config with invalid action parameter fails to convert
 458         to ACL SampleVNF CLI commands"""
 459         ssh_helper = mock.Mock()
 460         setup_helper = AclApproxSetupEnvSetupEnvHelper(None, ssh_helper, None)
 461         get_default_flows.return_value = ({}, [])
 462         # duplicate config and add action with invalid parameter
 463         acl_config = copy.deepcopy(self.ACL_CONFIG)
 464         acl_config['access-list-entries'][0]["actions"].append(
 465             {"nat": {"xport": 0}})
 466         self.assertRaises(exceptions.AclMissingActionArguments,
 467             setup_helper.get_flows_config, acl_config)
 468
 469     def check_acl_commands(self, config, expected_cli_patterns):
 470         """Check if expected ACL CLI commands (given as a list of patterns,
 471         `expected_cli_patterns` parameter) present in SampleVNF ACL
 472         configuration (given as a multiline string, `config` parameter)"""
 473         # Example of expected config:
 474         # ---------------------------
 475         # p action add 1 accept
 476         # p action add 1 fwd 1
 477         # p action add 2 accept
 478         # p action add 2 count
 479         # p action add 2 fwd 0
 480         # p acl add 1 152.16.100.0 24 152.16.40.0 24 0 65535 0 65535 0 0 1
 481         # p acl add 1 152.16.40.0 24 152.16.100.0 24 0 65535 0 65535 0 0 2
 482         # p acl applyruleset
 483         # ---------------------------
 484         # NOTE: The config above consists of actions ids, which are actually
 485         # unknown (generated at runtime), thus it's incorrect just to compare
 486         # the example ACL config above with the configuration returned by
 487         # get_flows_config() function. It's more correct to use CLI patterns
 488         # (RE) to find the required SampleVNF CLI commands in the multiline
 489         # string (SampleVNF ACL configuration).
 490         for pattern, num_of_match in expected_cli_patterns:
 491             # format: (<cli pattern>, <number of expected matches>)
 492             result = re.findall(pattern, config, re.MULTILINE)
 493             self.assertEqual(len(result), num_of_match)
 494
 495     @mock.patch('yardstick.network_services.vnf_generic.vnf.sample_vnf.open')
 496     @mock.patch.object(utils, 'find_relative_file')
 497     @mock.patch('yardstick.network_services.vnf_generic.vnf.sample_vnf.MultiPortConfig')
 498     @mock.patch.object(utils, 'open_relative_file')
 499     def test_build_config(self, *args):
 500         vnfd_helper = mock.Mock()
 501         ssh_helper = mock.Mock()
 502         scenario_helper = mock.Mock()
 503         scenario_helper.vnf_cfg = {'lb_config': 'HW'}
 504         scenario_helper.options = {}
 505         scenario_helper.all_options = {}
 506
 507         acl_approx_setup_helper = AclApproxSetupEnvSetupEnvHelper(vnfd_helper,
 508                                                                   ssh_helper,
 509                                                                   scenario_helper)
 510
 511         acl_approx_setup_helper.get_flows_config = mock.Mock()
 512         acl_approx_setup_helper.ssh_helper.provision_tool = mock.Mock(return_value='tool_path')
 513         acl_approx_setup_helper.ssh_helper.all_ports = mock.Mock()
 514         acl_approx_setup_helper.vnfd_helper.port_nums = mock.Mock(return_value=[0, 1])
 515         expected = 'sudo tool_path -p 0x3 -f /tmp/acl_config -s /tmp/acl_script  --hwlb 3'
 516         self.assertEqual(acl_approx_setup_helper.build_config(), expected)
 517         acl_approx_setup_helper.get_flows_config.assert_called_once()