213 lines
7.5 KiB
Python
213 lines
7.5 KiB
Python
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# Author: Federico Ceratto <federico.ceratto@hpe.com>
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Unit-test backend agent
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"""
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from mock import MagicMock
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from mock import Mock
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from mock import patch
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from oslotest import base
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import dns
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import dns.rdataclass
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import dns.rdatatype
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import mock
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import testtools
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from designate import exceptions
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from designate.tests.unit import RoObject
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import designate.backend.agent as agent
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import designate.backend.private_codes as pcodes
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class SCAgentPoolBackend(agent.AgentPoolBackend):
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def __init__(self):
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pass
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@mock.patch.object(agent.mdns_api.MdnsAPI, 'get_instance')
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@patch.object(agent.base.Backend, '__init__')
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class BackendAgentTest(base.BaseTestCase):
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def setUp(self, *mocks):
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super(BackendAgentTest, self).setUp()
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agent.CONF = RoObject({
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'service:mdns': RoObject(all_tcp=False)
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})
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self.agent = SCAgentPoolBackend()
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self.agent.timeout = 1
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self.agent.host = 2
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self.agent.port = 3
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self.agent.retry_interval = 4
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self.agent.max_retries = 5
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self.agent.delay = 6
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def test_mdns_api(self, *mock):
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assert isinstance(self.agent.mdns_api, MagicMock)
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def test_create_zone(self, *mock):
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self.agent._make_and_send_dns_message = Mock(return_value=(1, 2))
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out = self.agent.create_zone('ctx', RoObject(name='zn'))
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self.agent._make_and_send_dns_message.assert_called_with(
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'zn', 1, 14, pcodes.CREATE, pcodes.SUCCESS, 2, 3)
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self.assertIsNone(out)
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def test_create_zone_exception(self, *mock):
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self.agent._make_and_send_dns_message = Mock(return_value=(None, 2))
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with testtools.ExpectedException(exceptions.Backend):
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self.agent.create_zone('ctx', RoObject(name='zn'))
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self.agent._make_and_send_dns_message.assert_called_with(
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'zn', 1, 14, pcodes.CREATE, pcodes.SUCCESS, 2, 3)
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def test_update_zone(self, *mock):
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self.agent.mdns_api.notify_zone_changed = Mock()
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zone = RoObject(name='zn')
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out = self.agent.update_zone('ctx', zone)
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self.agent.mdns_api.notify_zone_changed.assert_called_with(
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'ctx', zone, 2, 3, 1, 4, 5, 6)
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self.assertIsNone(out)
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def test_delete_zone(self, *mock):
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self.agent._make_and_send_dns_message = Mock(return_value=(1, 2))
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out = self.agent.delete_zone('ctx', RoObject(name='zn'))
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self.agent._make_and_send_dns_message.assert_called_with(
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'zn', 1, 14, pcodes.DELETE, pcodes.SUCCESS, 2, 3)
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self.assertIsNone(out)
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def test_delete_zone_exception(self, *mock):
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self.agent._make_and_send_dns_message = Mock(return_value=(None, 2))
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with testtools.ExpectedException(exceptions.Backend):
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self.agent.delete_zone('ctx', RoObject(name='zn'))
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self.agent._make_and_send_dns_message.assert_called_with(
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'zn', 1, 14, pcodes.DELETE, pcodes.SUCCESS, 2, 3)
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def test_make_and_send_dns_message_timeout(self, *mocks):
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self.agent._make_dns_message = Mock(return_value='')
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self.agent._send_dns_message = Mock(
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return_value=dns.exception.Timeout())
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out = self.agent._make_and_send_dns_message('h', 123, 1, 2, 3, 4, 5)
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self.assertEqual((None, 0), out)
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def test_make_and_send_dns_message_bad_response(self, *mocks):
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self.agent._make_dns_message = Mock(return_value='')
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self.agent._send_dns_message = Mock(
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return_value=agent.dns_query.BadResponse())
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out = self.agent._make_and_send_dns_message('h', 123, 1, 2, 3, 4, 5)
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self.assertEqual((None, 0), out)
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def test_make_and_send_dns_message_missing_AA_flags(self, *mocks):
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self.agent._make_dns_message = Mock(return_value='')
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response = RoObject(
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rcode=Mock(return_value=dns.rcode.NOERROR),
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# rcode is NOERROR but (flags & dns.flags.AA) gives 0
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flags=0,
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)
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self.agent._send_dns_message = Mock(return_value=response)
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out = self.agent._make_and_send_dns_message('h', 123, 1, 2, 3, 4, 5)
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self.assertEqual((None, 0), out)
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def test_make_and_send_dns_message_error_flags(self, *mocks):
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self.agent._make_dns_message = Mock(return_value='')
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response = RoObject(
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rcode=Mock(return_value=dns.rcode.NOERROR),
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# rcode is NOERROR but flags are not NOERROR
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flags=123,
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ednsflags=321
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)
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self.agent._send_dns_message = Mock(return_value=response)
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out = self.agent._make_and_send_dns_message('h', 123, 1, 2, 3, 4, 5)
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self.assertEqual((None, 0), out)
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def test_make_and_send_dns_message(self, *mock):
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self.agent._make_dns_message = Mock(return_value='')
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response = RoObject(
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rcode=Mock(return_value=dns.rcode.NOERROR),
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flags=agent.dns.flags.AA,
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ednsflags=321
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)
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self.agent._send_dns_message = Mock(return_value=response)
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out = self.agent._make_and_send_dns_message('h', 123, 1, 2, 3, 4, 5)
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self.assertEqual((response, 0), out)
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@mock.patch.object(agent.dns_query, 'tcp')
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@mock.patch.object(agent.dns_query, 'udp')
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def test_send_dns_message(self, *mocks):
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mocks[0].return_value = 'mock udp resp'
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out = self.agent._send_dns_message('msg', 'host', 123, 1)
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assert not agent.dns_query.tcp.called
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agent.dns_query.udp.assert_called_with('msg', 'host', port=123,
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timeout=1)
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self.assertEqual('mock udp resp', out)
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@mock.patch.object(agent.dns_query, 'tcp')
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@mock.patch.object(agent.dns_query, 'udp')
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def test_send_dns_message_timeout(self, *mocks):
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mocks[0].side_effect = dns.exception.Timeout
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out = self.agent._send_dns_message('msg', 'host', 123, 1)
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agent.dns_query.udp.assert_called_with('msg', 'host', port=123,
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timeout=1)
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assert isinstance(out, dns.exception.Timeout)
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@mock.patch.object(agent.dns_query, 'tcp')
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@mock.patch.object(agent.dns_query, 'udp')
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def test_send_dns_message_bad_response(self, *mocks):
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mocks[0].side_effect = agent.dns_query.BadResponse
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out = self.agent._send_dns_message('msg', 'host', 123, 1)
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agent.dns_query.udp.assert_called_with('msg', 'host', port=123,
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timeout=1)
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assert isinstance(out, agent.dns_query.BadResponse)
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@mock.patch.object(agent.dns_query, 'tcp')
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@mock.patch.object(agent.dns_query, 'udp')
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def test_send_dns_message_tcp(self, *mocks):
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agent.CONF = RoObject({
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'service:mdns': RoObject(all_tcp=True)
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})
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mocks[1].return_value = 'mock tcp resp'
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out = self.agent._send_dns_message('msg', 'host', 123, 1)
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assert not agent.dns_query.udp.called
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agent.dns_query.tcp.assert_called_with('msg', 'host', port=123,
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timeout=1)
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self.assertEqual('mock tcp resp', out)
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