# vim: tabstop=4 shiftwidth=4 softtabstop=4 # Copyright 2012 OpenStack LLC # All Rights Reserved. # # 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 unittest2 as unittest from quantum.agent.linux import ip_lib from quantum.common import exceptions NETNS_SAMPLE = [ '12345678-1234-5678-abcd-1234567890ab', 'bbbbbbbb-bbbb-bbbb-bbbb-bbbbbbbbbbbb', 'cccccccc-cccc-cccc-cccc-cccccccccccc'] LINK_SAMPLE = [ '1: lo: mtu 16436 qdisc noqueue state UNKNOWN \\' 'link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00', '2: eth0: mtu 1500 qdisc mq state UP ' 'qlen 1000\ link/ether cc:dd:ee:ff:ab:cd brd ff:ff:ff:ff:ff:ff', '3: br-int: mtu 1500 qdisc noop state DOWN ' '\ link/ether aa:bb:cc:dd:ee:ff brd ff:ff:ff:ff:ff:ff', '4: gw-ddc717df-49: mtu 1500 qdisc noop ' 'state DOWN \ link/ether fe:dc:ba:fe:dc:ba brd ff:ff:ff:ff:ff:ff'] ADDR_SAMPLE = (""" 2: eth0: mtu 1500 qdisc mq state UP qlen 1000 link/ether dd:cc:aa:b9:76:ce brd ff:ff:ff:ff:ff:ff inet 172.16.77.240/24 brd 172.16.77.255 scope global eth0 inet6 2001:470:9:1224:5595:dd51:6ba2:e788/64 scope global temporary dynamic valid_lft 14187sec preferred_lft 3387sec inet6 2001:470:9:1224:fd91:272:581e:3a32/64 scope global temporary """ """deprecated dynamic valid_lft 14187sec preferred_lft 0sec inet6 2001:470:9:1224:4508:b885:5fb:740b/64 scope global temporary """ """deprecated dynamic valid_lft 14187sec preferred_lft 0sec inet6 2001:470:9:1224:dfcc:aaff:feb9:76ce/64 scope global dynamic valid_lft 14187sec preferred_lft 3387sec inet6 fe80::dfcc:aaff:feb9:76ce/64 scope link valid_lft forever preferred_lft forever """) ADDR_SAMPLE2 = (""" 2: eth0: mtu 1500 qdisc mq state UP qlen 1000 link/ether dd:cc:aa:b9:76:ce brd ff:ff:ff:ff:ff:ff inet 172.16.77.240/24 scope global eth0 inet6 2001:470:9:1224:5595:dd51:6ba2:e788/64 scope global temporary dynamic valid_lft 14187sec preferred_lft 3387sec inet6 2001:470:9:1224:fd91:272:581e:3a32/64 scope global temporary """ """deprecated dynamic valid_lft 14187sec preferred_lft 0sec inet6 2001:470:9:1224:4508:b885:5fb:740b/64 scope global temporary """ """deprecated dynamic valid_lft 14187sec preferred_lft 0sec inet6 2001:470:9:1224:dfcc:aaff:feb9:76ce/64 scope global dynamic valid_lft 14187sec preferred_lft 3387sec inet6 fe80::dfcc:aaff:feb9:76ce/64 scope link valid_lft forever preferred_lft forever """) GATEWAY_SAMPLE1 = (""" default via 10.35.19.254 metric 100 10.35.16.0/22 proto kernel scope link src 10.35.17.97 """) GATEWAY_SAMPLE2 = (""" default via 10.35.19.254 metric 100 """) GATEWAY_SAMPLE3 = (""" 10.35.16.0/22 proto kernel scope link src 10.35.17.97 """) GATEWAY_SAMPLE4 = (""" default via 10.35.19.254 """) DEVICE_ROUTE_SAMPLE = ("10.0.0.0/24 scope link src 10.0.0.2") SUBNET_SAMPLE1 = ("10.0.0.0/24 dev qr-23380d11-d2 scope link src 10.0.0.1\n" "10.0.0.0/24 dev tap1d7888a7-10 scope link src 10.0.0.2") SUBNET_SAMPLE2 = ("10.0.0.0/24 dev tap1d7888a7-10 scope link src 10.0.0.2\n" "10.0.0.0/24 dev qr-23380d11-d2 scope link src 10.0.0.1") class TestSubProcessBase(unittest.TestCase): def setUp(self): self.execute_p = mock.patch('quantum.agent.linux.utils.execute') self.execute = self.execute_p.start() def tearDown(self): self.execute_p.stop() def test_execute_wrapper(self): ip_lib.SubProcessBase._execute('o', 'link', ('list',), 'sudo') self.execute.assert_called_once_with(['ip', '-o', 'link', 'list'], root_helper='sudo') def test_execute_wrapper_int_options(self): ip_lib.SubProcessBase._execute([4], 'link', ('list',)) self.execute.assert_called_once_with(['ip', '-4', 'link', 'list'], root_helper=None) def test_execute_wrapper_no_options(self): ip_lib.SubProcessBase._execute([], 'link', ('list',)) self.execute.assert_called_once_with(['ip', 'link', 'list'], root_helper=None) def test_run_no_namespace(self): base = ip_lib.SubProcessBase('sudo') base._run([], 'link', ('list',)) self.execute.assert_called_once_with(['ip', 'link', 'list'], root_helper=None) def test_run_namespace(self): base = ip_lib.SubProcessBase('sudo', 'ns') base._run([], 'link', ('list',)) self.execute.assert_called_once_with(['ip', 'netns', 'exec', 'ns', 'ip', 'link', 'list'], root_helper='sudo') def test_as_root_namespace(self): base = ip_lib.SubProcessBase('sudo', 'ns') base._as_root([], 'link', ('list',)) self.execute.assert_called_once_with(['ip', 'netns', 'exec', 'ns', 'ip', 'link', 'list'], root_helper='sudo') def test_as_root_no_root_helper(self): base = ip_lib.SubProcessBase() self.assertRaises(exceptions.SudoRequired, base._as_root, [], 'link', ('list',)) class TestIpWrapper(unittest.TestCase): def setUp(self): self.execute_p = mock.patch.object(ip_lib.IPWrapper, '_execute') self.execute = self.execute_p.start() def tearDown(self): self.execute_p.stop() def test_get_devices(self): self.execute.return_value = '\n'.join(LINK_SAMPLE) retval = ip_lib.IPWrapper('sudo').get_devices() self.assertEqual(retval, [ip_lib.IPDevice('lo'), ip_lib.IPDevice('eth0'), ip_lib.IPDevice('br-int'), ip_lib.IPDevice('gw-ddc717df-49')]) self.execute.assert_called_once_with('o', 'link', ('list',), 'sudo', None) def test_get_devices_malformed_line(self): self.execute.return_value = '\n'.join(LINK_SAMPLE + ['gibberish']) retval = ip_lib.IPWrapper('sudo').get_devices() self.assertEqual(retval, [ip_lib.IPDevice('lo'), ip_lib.IPDevice('eth0'), ip_lib.IPDevice('br-int'), ip_lib.IPDevice('gw-ddc717df-49')]) self.execute.assert_called_once_with('o', 'link', ('list',), 'sudo', None) def test_get_namespaces(self): self.execute.return_value = '\n'.join(NETNS_SAMPLE) retval = ip_lib.IPWrapper.get_namespaces('sudo') self.assertEqual(retval, ['12345678-1234-5678-abcd-1234567890ab', 'bbbbbbbb-bbbb-bbbb-bbbb-bbbbbbbbbbbb', 'cccccccc-cccc-cccc-cccc-cccccccccccc']) self.execute.assert_called_once_with('', 'netns', ('list',), root_helper='sudo') def test_add_tuntap(self): ip_lib.IPWrapper('sudo').add_tuntap('tap0') self.execute.assert_called_once_with('', 'tuntap', ('add', 'tap0', 'mode', 'tap'), 'sudo', None) def test_add_veth(self): ip_lib.IPWrapper('sudo').add_veth('tap0', 'tap1') self.execute.assert_called_once_with('', 'link', ('add', 'tap0', 'type', 'veth', 'peer', 'name', 'tap1'), 'sudo', None) def test_get_device(self): dev = ip_lib.IPWrapper('sudo', 'ns').device('eth0') self.assertEqual(dev.root_helper, 'sudo') self.assertEqual(dev.namespace, 'ns') self.assertEqual(dev.name, 'eth0') def test_ensure_namespace(self): with mock.patch.object(ip_lib, 'IPDevice') as ip_dev: ip = ip_lib.IPWrapper('sudo') with mock.patch.object(ip.netns, 'exists') as ns_exists: ns_exists.return_value = False ns = ip.ensure_namespace('ns') self.execute.assert_has_calls( [mock.call([], 'netns', ('add', 'ns'), 'sudo', None)]) ip_dev.assert_has_calls([mock.call('lo', 'sudo', 'ns'), mock.call().link.set_up()]) def test_ensure_namespace_existing(self): with mock.patch.object(ip_lib, 'IpNetnsCommand') as ip_ns_cmd: ip_ns_cmd.exists.return_value = True ns = ip_lib.IPWrapper('sudo').ensure_namespace('ns') self.assertFalse(self.execute.called) self.assertEqual(ns.namespace, 'ns') def test_namespace_is_empty_no_devices(self): ip = ip_lib.IPWrapper('sudo', 'ns') with mock.patch.object(ip, 'get_devices') as get_devices: get_devices.return_value = [] self.assertTrue(ip.namespace_is_empty()) get_devices.assert_called_once_with(exclude_loopback=True) def test_namespace_is_empty(self): ip = ip_lib.IPWrapper('sudo', 'ns') with mock.patch.object(ip, 'get_devices') as get_devices: get_devices.return_value = [mock.Mock()] self.assertFalse(ip.namespace_is_empty()) get_devices.assert_called_once_with(exclude_loopback=True) def test_garbage_collect_namespace_does_not_exist(self): with mock.patch.object(ip_lib, 'IpNetnsCommand') as ip_ns_cmd_cls: ip_ns_cmd_cls.return_value.exists.return_value = False ip = ip_lib.IPWrapper('sudo', 'ns') with mock.patch.object(ip, 'namespace_is_empty') as mock_is_empty: self.assertFalse(ip.garbage_collect_namespace()) ip_ns_cmd_cls.assert_has_calls([mock.call().exists('ns')]) self.assertNotIn(mock.call().delete('ns'), ip_ns_cmd_cls.return_value.mock_calls) self.assertEqual(mock_is_empty.mock_calls, []) def test_garbage_collect_namespace_existing_empty_ns(self): with mock.patch.object(ip_lib, 'IpNetnsCommand') as ip_ns_cmd_cls: ip_ns_cmd_cls.return_value.exists.return_value = True ip = ip_lib.IPWrapper('sudo', 'ns') with mock.patch.object(ip, 'namespace_is_empty') as mock_is_empty: mock_is_empty.return_value = True self.assertTrue(ip.garbage_collect_namespace()) mock_is_empty.assert_called_once_with() expected = [mock.call().exists('ns'), mock.call().delete('ns')] ip_ns_cmd_cls.assert_has_calls(expected) def test_garbage_collect_namespace_existing_not_empty(self): lo_device = mock.Mock() lo_device.name = 'lo' tap_device = mock.Mock() tap_device.name = 'tap1' with mock.patch.object(ip_lib, 'IpNetnsCommand') as ip_ns_cmd_cls: ip_ns_cmd_cls.return_value.exists.return_value = True ip = ip_lib.IPWrapper('sudo', 'ns') with mock.patch.object(ip, 'namespace_is_empty') as mock_is_empty: mock_is_empty.return_value = False self.assertFalse(ip.garbage_collect_namespace()) mock_is_empty.assert_called_once_with() expected = [mock.call(ip), mock.call().exists('ns')] self.assertEqual(ip_ns_cmd_cls.mock_calls, expected) self.assertNotIn(mock.call().delete('ns'), ip_ns_cmd_cls.mock_calls) def test_add_device_to_namespace(self): dev = mock.Mock() ip_lib.IPWrapper('sudo', 'ns').add_device_to_namespace(dev) dev.assert_has_calls([mock.call.link.set_netns('ns')]) def test_add_device_to_namespace_is_none(self): dev = mock.Mock() ip_lib.IPWrapper('sudo').add_device_to_namespace(dev) self.assertEqual(dev.mock_calls, []) class TestIPDevice(unittest.TestCase): def test_eq_same_name(self): dev1 = ip_lib.IPDevice('tap0') dev2 = ip_lib.IPDevice('tap0') self.assertEqual(dev1, dev2) def test_eq_diff_name(self): dev1 = ip_lib.IPDevice('tap0') dev2 = ip_lib.IPDevice('tap1') self.assertNotEqual(dev1, dev2) def test_eq_same_namespace(self): dev1 = ip_lib.IPDevice('tap0', 'ns1') dev2 = ip_lib.IPDevice('tap0', 'ns1') self.assertEqual(dev1, dev2) def test_eq_diff_namespace(self): dev1 = ip_lib.IPDevice('tap0', 'sudo', 'ns1') dev2 = ip_lib.IPDevice('tap0', 'sudo', 'ns2') self.assertNotEqual(dev1, dev2) def test_eq_other_is_none(self): dev1 = ip_lib.IPDevice('tap0', 'sudo', 'ns1') self.assertNotEqual(dev1, None) def test_str(self): self.assertEqual(str(ip_lib.IPDevice('tap0')), 'tap0') class TestIPCommandBase(unittest.TestCase): def setUp(self): self.ip = mock.Mock() self.ip.root_helper = 'sudo' self.ip.namespace = 'namespace' self.ip_cmd = ip_lib.IpCommandBase(self.ip) self.ip_cmd.COMMAND = 'foo' def test_run(self): self.ip_cmd._run('link', 'show') self.ip.assert_has_calls([mock.call._run([], 'foo', ('link', 'show'))]) def test_run_with_options(self): self.ip_cmd._run('link', options='o') self.ip.assert_has_calls([mock.call._run('o', 'foo', ('link', ))]) def test_as_root(self): self.ip_cmd._as_root('link') self.ip.assert_has_calls( [mock.call._as_root([], 'foo', ('link', ), False)]) def test_as_root_with_options(self): self.ip_cmd._as_root('link', options='o') self.ip.assert_has_calls( [mock.call._as_root('o', 'foo', ('link', ), False)]) class TestIPDeviceCommandBase(unittest.TestCase): def setUp(self): self.ip_dev = mock.Mock() self.ip_dev.name = 'eth0' self.ip_dev.root_helper = 'sudo' self.ip_dev._execute = mock.Mock(return_value='executed') self.ip_cmd = ip_lib.IpDeviceCommandBase(self.ip_dev) self.ip_cmd.COMMAND = 'foo' def test_name_property(self): self.assertEqual(self.ip_cmd.name, 'eth0') class TestIPCmdBase(unittest.TestCase): def setUp(self): self.parent = mock.Mock() self.parent.name = 'eth0' self.parent.root_helper = 'sudo' def _assert_call(self, options, args): self.parent.assert_has_calls([ mock.call._run(options, self.command, args)]) def _assert_sudo(self, options, args, force_root_namespace=False): self.parent.assert_has_calls( [mock.call._as_root(options, self.command, args, force_root_namespace)]) class TestIpLinkCommand(TestIPCmdBase): def setUp(self): super(TestIpLinkCommand, self).setUp() self.parent._run.return_value = LINK_SAMPLE[1] self.command = 'link' self.link_cmd = ip_lib.IpLinkCommand(self.parent) def test_set_address(self): self.link_cmd.set_address('aa:bb:cc:dd:ee:ff') self._assert_sudo([], ('set', 'eth0', 'address', 'aa:bb:cc:dd:ee:ff')) def test_set_mtu(self): self.link_cmd.set_mtu(1500) self._assert_sudo([], ('set', 'eth0', 'mtu', 1500)) def test_set_up(self): self.link_cmd.set_up() self._assert_sudo([], ('set', 'eth0', 'up')) def test_set_down(self): self.link_cmd.set_down() self._assert_sudo([], ('set', 'eth0', 'down')) def test_set_netns(self): self.link_cmd.set_netns('foo') self._assert_sudo([], ('set', 'eth0', 'netns', 'foo')) self.assertEqual(self.parent.namespace, 'foo') def test_set_name(self): self.link_cmd.set_name('tap1') self._assert_sudo([], ('set', 'eth0', 'name', 'tap1')) self.assertEqual(self.parent.name, 'tap1') def test_delete(self): self.link_cmd.delete() self._assert_sudo([], ('delete', 'eth0')) def test_address_property(self): self.parent._execute = mock.Mock(return_value=LINK_SAMPLE[1]) self.assertEqual(self.link_cmd.address, 'cc:dd:ee:ff:ab:cd') def test_mtu_property(self): self.parent._execute = mock.Mock(return_value=LINK_SAMPLE[1]) self.assertEqual(self.link_cmd.mtu, 1500) def test_qdisc_property(self): self.parent._execute = mock.Mock(return_value=LINK_SAMPLE[1]) self.assertEqual(self.link_cmd.qdisc, 'mq') def test_qlen_property(self): self.parent._execute = mock.Mock(return_value=LINK_SAMPLE[1]) self.assertEqual(self.link_cmd.qlen, 1000) def test_state_property(self): self.parent._execute = mock.Mock(return_value=LINK_SAMPLE[1]) self.assertEqual(self.link_cmd.state, 'UP') def test_settings_property(self): expected = {'mtu': 1500, 'qlen': 1000, 'state': 'UP', 'qdisc': 'mq', 'brd': 'ff:ff:ff:ff:ff:ff', 'link/ether': 'cc:dd:ee:ff:ab:cd'} self.parent._execute = mock.Mock(return_value=LINK_SAMPLE[1]) self.assertEqual(self.link_cmd.attributes, expected) self._assert_call('o', ('show', 'eth0')) class TestIpAddrCommand(TestIPCmdBase): def setUp(self): super(TestIpAddrCommand, self).setUp() self.parent.name = 'tap0' self.command = 'addr' self.addr_cmd = ip_lib.IpAddrCommand(self.parent) def test_add_address(self): self.addr_cmd.add(4, '192.168.45.100/24', '192.168.45.255') self._assert_sudo([4], ('add', '192.168.45.100/24', 'brd', '192.168.45.255', 'scope', 'global', 'dev', 'tap0')) def test_add_address_scoped(self): self.addr_cmd.add(4, '192.168.45.100/24', '192.168.45.255', scope='link') self._assert_sudo([4], ('add', '192.168.45.100/24', 'brd', '192.168.45.255', 'scope', 'link', 'dev', 'tap0')) def test_del_address(self): self.addr_cmd.delete(4, '192.168.45.100/24') self._assert_sudo([4], ('del', '192.168.45.100/24', 'dev', 'tap0')) def test_flush(self): self.addr_cmd.flush() self._assert_sudo([], ('flush', 'tap0')) def test_list(self): expected = [ dict(ip_version=4, scope='global', dynamic=False, cidr='172.16.77.240/24', broadcast='172.16.77.255'), dict(ip_version=6, scope='global', dynamic=True, cidr='2001:470:9:1224:5595:dd51:6ba2:e788/64', broadcast='::'), dict(ip_version=6, scope='global', dynamic=True, cidr='2001:470:9:1224:fd91:272:581e:3a32/64', broadcast='::'), dict(ip_version=6, scope='global', dynamic=True, cidr='2001:470:9:1224:4508:b885:5fb:740b/64', broadcast='::'), dict(ip_version=6, scope='global', dynamic=True, cidr='2001:470:9:1224:dfcc:aaff:feb9:76ce/64', broadcast='::'), dict(ip_version=6, scope='link', dynamic=False, cidr='fe80::dfcc:aaff:feb9:76ce/64', broadcast='::')] test_cases = [ADDR_SAMPLE, ADDR_SAMPLE2] for test_case in test_cases: self.parent._run = mock.Mock(return_value=test_case) self.assertEqual(self.addr_cmd.list(), expected) self._assert_call([], ('show', 'tap0')) def test_list_filtered(self): expected = [ dict(ip_version=4, scope='global', dynamic=False, cidr='172.16.77.240/24', broadcast='172.16.77.255')] test_cases = [ADDR_SAMPLE, ADDR_SAMPLE2] for test_case in test_cases: output = '\n'.join(test_case.split('\n')[0:4]) self.parent._run.return_value = output self.assertEqual(self.addr_cmd.list('global', filters=['permanent']), expected) self._assert_call([], ('show', 'tap0', 'permanent', 'scope', 'global')) class TestIpRouteCommand(TestIPCmdBase): def setUp(self): super(TestIpRouteCommand, self).setUp() self.parent.name = 'eth0' self.command = 'route' self.route_cmd = ip_lib.IpRouteCommand(self.parent) def test_add_gateway(self): gateway = '192.168.45.100' metric = 100 self.route_cmd.add_gateway(gateway, metric) self._assert_sudo([], ('add', 'default', 'via', gateway, 'metric', metric, 'dev', self.parent.name)) def test_del_gateway(self): gateway = '192.168.45.100' self.route_cmd.delete_gateway(gateway) self._assert_sudo([], ('del', 'default', 'via', gateway, 'dev', self.parent.name)) def test_get_gateway(self): test_cases = [{'sample': GATEWAY_SAMPLE1, 'expected': {'gateway': '10.35.19.254', 'metric': 100}}, {'sample': GATEWAY_SAMPLE2, 'expected': {'gateway': '10.35.19.254', 'metric': 100}}, {'sample': GATEWAY_SAMPLE3, 'expected': None}, {'sample': GATEWAY_SAMPLE4, 'expected': {'gateway': '10.35.19.254'}}] for test_case in test_cases: self.parent._run = mock.Mock(return_value=test_case['sample']) self.assertEqual(self.route_cmd.get_gateway(), test_case['expected']) def test_pullup_route(self): # interface is not the first in the list - requires # deleting and creating existing entries output = [DEVICE_ROUTE_SAMPLE, SUBNET_SAMPLE1] def pullup_side_effect(self, *args): result = output.pop(0) return result self.parent._run = mock.Mock(side_effect=pullup_side_effect) self.route_cmd.pullup_route('tap1d7888a7-10') self._assert_sudo([], ('del', '10.0.0.0/24', 'dev', 'qr-23380d11-d2')) self._assert_sudo([], ('append', '10.0.0.0/24', 'proto', 'kernel', 'src', '10.0.0.1', 'dev', 'qr-23380d11-d2')) def test_pullup_route_first(self): # interface is first in the list - no changes output = [DEVICE_ROUTE_SAMPLE, SUBNET_SAMPLE2] def pullup_side_effect(self, *args): result = output.pop(0) return result self.parent._run = mock.Mock(side_effect=pullup_side_effect) self.route_cmd.pullup_route('tap1d7888a7-10') # Check two calls - device get and subnet get self.assertEqual(len(self.parent._run.mock_calls), 2) class TestIpNetnsCommand(TestIPCmdBase): def setUp(self): super(TestIpNetnsCommand, self).setUp() self.command = 'netns' self.netns_cmd = ip_lib.IpNetnsCommand(self.parent) def test_add_namespace(self): ns = self.netns_cmd.add('ns') self._assert_sudo([], ('add', 'ns'), force_root_namespace=True) self.assertEqual(ns.namespace, 'ns') def test_delete_namespace(self): with mock.patch('quantum.agent.linux.utils.execute') as execute: self.netns_cmd.delete('ns') self._assert_sudo([], ('delete', 'ns'), force_root_namespace=True) def test_namespace_exists(self): retval = '\n'.join(NETNS_SAMPLE) self.parent._as_root.return_value = retval self.assertTrue( self.netns_cmd.exists('bbbbbbbb-bbbb-bbbb-bbbb-bbbbbbbbbbbb')) self._assert_sudo('o', ('list',), force_root_namespace=True) def test_namespace_doest_not_exist(self): retval = '\n'.join(NETNS_SAMPLE) self.parent._as_root.return_value = retval self.assertFalse( self.netns_cmd.exists('bbbbbbbb-1111-2222-3333-bbbbbbbbbbbb')) self._assert_sudo('o', ('list',), force_root_namespace=True) def test_execute(self): self.parent.namespace = 'ns' with mock.patch('quantum.agent.linux.utils.execute') as execute: self.netns_cmd.execute(['ip', 'link', 'list']) execute.assert_called_once_with(['ip', 'netns', 'exec', 'ns', 'ip', 'link', 'list'], root_helper='sudo', check_exit_code=True) def test_execute_env_var_prepend(self): self.parent.namespace = 'ns' with mock.patch('quantum.agent.linux.utils.execute') as execute: env = dict(FOO=1, BAR=2) self.netns_cmd.execute(['ip', 'link', 'list'], env) execute.assert_called_once_with( ['FOO=1', 'BAR=2', 'ip', 'netns', 'exec', 'ns', 'ip', 'link', 'list'], root_helper='sudo', check_exit_code=True) class TestDeviceExists(unittest.TestCase): def test_device_exists(self): with mock.patch.object(ip_lib.IPDevice, '_execute') as _execute: _execute.return_value = LINK_SAMPLE[1] self.assertTrue(ip_lib.device_exists('eth0')) _execute.assert_called_once_with('o', 'link', ('show', 'eth0')) def test_device_does_not_exist(self): with mock.patch.object(ip_lib.IPDevice, '_execute') as _execute: _execute.return_value = '' _execute.side_effect = RuntimeError self.assertFalse(ip_lib.device_exists('eth0'))