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# Copyright (c) 2015 Hewlett-Packard Development Company, L.P.
#
# 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.

"""
test_floating_ip_nova
----------------------------------

Tests Floating IP resource methods for nova-network
"""

from openstack.tests import fakes
from openstack.tests.unit import base


def get_fake_has_service(has_service):
    def fake_has_service(s):
        if s == 'network':
            return False
        return has_service(s)
    return fake_has_service


class TestFloatingIP(base.TestCase):
    mock_floating_ip_list_rep = [
        {
            'fixed_ip': None,
            'id': 1,
            'instance_id': None,
            'ip': '203.0.113.1',
            'pool': 'nova'
        },
        {
            'fixed_ip': None,
            'id': 2,
            'instance_id': None,
            'ip': '203.0.113.2',
            'pool': 'nova'
        },
        {
            'fixed_ip': '192.0.2.3',
            'id': 29,
            'instance_id': 'myself',
            'ip': '198.51.100.29',
            'pool': 'black_hole'
        }
    ]

    mock_floating_ip_pools = [
        {'id': 'pool1_id', 'name': 'nova'},
        {'id': 'pool2_id', 'name': 'pool2'}]

    def assertAreInstances(self, elements, elem_type):
        for e in elements:
            self.assertIsInstance(e, elem_type)

    def setUp(self):
        super(TestFloatingIP, self).setUp()

        self.fake_server = fakes.make_fake_server(
            'server-id', '', 'ACTIVE',
            addresses={u'test_pnztt_net': [{
                u'OS-EXT-IPS:type': u'fixed',
                u'addr': '192.0.2.129',
                u'version': 4,
                u'OS-EXT-IPS-MAC:mac_addr':
                u'fa:16:3e:ae:7d:42'}]})

        self.cloud.has_service = get_fake_has_service(self.cloud.has_service)

    def test_list_floating_ips(self):

        self.register_uris([
            dict(method='GET',
                 uri=self.get_mock_url('compute', append=['os-floating-ips']),
                 json={'floating_ips': self.mock_floating_ip_list_rep}),
        ])
        floating_ips = self.cloud.list_floating_ips()

        self.assertIsInstance(floating_ips, list)
        self.assertEqual(3, len(floating_ips))
        self.assertAreInstances(floating_ips, dict)

        self.assert_calls()

    def test_list_floating_ips_with_filters(self):
        self.assertRaisesRegex(
            ValueError, "Nova-network don't support server-side",
            self.cloud.list_floating_ips, filters={'Foo': 42}
        )

    def test_search_floating_ips(self):
        self.register_uris([
            dict(method='GET',
                 uri=self.get_mock_url('compute', append=['os-floating-ips']),
                 json={'floating_ips': self.mock_floating_ip_list_rep}),
        ])

        floating_ips = self.cloud.search_floating_ips(
            filters={'attached': False})

        self.assertIsInstance(floating_ips, list)
        self.assertEqual(2, len(floating_ips))
        self.assertAreInstances(floating_ips, dict)

        self.assert_calls()

    def test_get_floating_ip(self):
        self.register_uris([
            dict(method='GET',
                 uri=self.get_mock_url('compute', append=['os-floating-ips']),
                 json={'floating_ips': self.mock_floating_ip_list_rep}),
        ])

        floating_ip = self.cloud.get_floating_ip(id='29')

        self.assertIsInstance(floating_ip, dict)
        self.assertEqual('198.51.100.29', floating_ip['floating_ip_address'])

        self.assert_calls()

    def test_get_floating_ip_not_found(self):
        self.register_uris([
            dict(method='GET',
                 uri=self.get_mock_url('compute', append=['os-floating-ips']),
                 json={'floating_ips': self.mock_floating_ip_list_rep}),
        ])

        floating_ip = self.cloud.get_floating_ip(id='666')

        self.assertIsNone(floating_ip)

        self.assert_calls()

    def test_get_floating_ip_by_id(self):
        self.register_uris([
            dict(method='GET',
                 uri=self.get_mock_url('compute', append=['os-floating-ips',
                                                          '1']),
                 json={'floating_ip': self.mock_floating_ip_list_rep[0]}),
        ])

        floating_ip = self.cloud.get_floating_ip_by_id(id='1')

        self.assertIsInstance(floating_ip, dict)
        self.assertEqual('203.0.113.1', floating_ip['floating_ip_address'])
        self.assert_calls()

    def test_create_floating_ip(self):
        self.register_uris([
            dict(method='POST',
                 uri=self.get_mock_url('compute', append=['os-floating-ips']),
                 json={'floating_ip': self.mock_floating_ip_list_rep[1]},
                 validate=dict(
                     json={'pool': 'nova'})),
            dict(method='GET',
                 uri=self.get_mock_url(
                     'compute',
                     append=['os-floating-ips', '2']),
                 json={'floating_ip': self.mock_floating_ip_list_rep[1]}),
        ])

        self.cloud.create_floating_ip(network='nova')

        self.assert_calls()

    def test_available_floating_ip_existing(self):
        self.register_uris([
            dict(method='GET',
                 uri=self.get_mock_url('compute', append=['os-floating-ips']),
                 json={'floating_ips': self.mock_floating_ip_list_rep[:1]}),
        ])

        ip = self.cloud.available_floating_ip(network='nova')

        self.assertEqual(self.mock_floating_ip_list_rep[0]['ip'],
                         ip['floating_ip_address'])
        self.assert_calls()

    def test_available_floating_ip_new(self):
        self.register_uris([
            dict(method='GET',
                 uri=self.get_mock_url('compute', append=['os-floating-ips']),
                 json={'floating_ips': []}),
            dict(method='POST',
                 uri=self.get_mock_url('compute', append=['os-floating-ips']),
                 json={'floating_ip': self.mock_floating_ip_list_rep[0]},
                 validate=dict(
                     json={'pool': 'nova'})),
            dict(method='GET',
                 uri=self.get_mock_url(
                     'compute',
                     append=['os-floating-ips', '1']),
                 json={'floating_ip': self.mock_floating_ip_list_rep[0]}),
        ])

        ip = self.cloud.available_floating_ip(network='nova')

        self.assertEqual(self.mock_floating_ip_list_rep[0]['ip'],
                         ip['floating_ip_address'])
        self.assert_calls()

    def test_delete_floating_ip_existing(self):

        self.register_uris([
            dict(method='DELETE',
                 uri=self.get_mock_url(
                     'compute',
                     append=['os-floating-ips', 'a-wild-id-appears'])),
            dict(method='GET',
                 uri=self.get_mock_url('compute', append=['os-floating-ips']),
                 json={'floating_ips': []}),
        ])

        ret = self.cloud.delete_floating_ip(
            floating_ip_id='a-wild-id-appears')

        self.assertTrue(ret)
        self.assert_calls()

    def test_delete_floating_ip_not_found(self):
        self.register_uris([
            dict(method='DELETE',
                 uri=self.get_mock_url(
                     'compute',
                     append=['os-floating-ips', 'a-wild-id-appears']),
                 status_code=404),
        ])

        ret = self.cloud.delete_floating_ip(
            floating_ip_id='a-wild-id-appears')

        self.assertFalse(ret)
        self.assert_calls()

    def test_attach_ip_to_server(self):
        self.register_uris([
            dict(method='GET',
                 uri=self.get_mock_url('compute', append=['os-floating-ips']),
                 json={'floating_ips': self.mock_floating_ip_list_rep}),
            dict(method='POST',
                 uri=self.get_mock_url(
                     'compute',
                     append=['servers', self.fake_server['id'], 'action']),
                 validate=dict(
                     json={
                         "addFloatingIp": {
                             "address": "203.0.113.1",
                             "fixed_address": "192.0.2.129",
                         }})),
        ])

        self.cloud._attach_ip_to_server(
            server=self.fake_server,
            floating_ip=self.cloud._normalize_floating_ip(
                self.mock_floating_ip_list_rep[0]),
            fixed_address='192.0.2.129')

        self.assert_calls()

    def test_detach_ip_from_server(self):
        self.register_uris([
            dict(method='GET',
                 uri=self.get_mock_url('compute', append=['os-floating-ips']),
                 json={'floating_ips': self.mock_floating_ip_list_rep}),
            dict(method='POST',
                 uri=self.get_mock_url(
                     'compute',
                     append=['servers', self.fake_server['id'], 'action']),
                 validate=dict(
                     json={
                         "removeFloatingIp": {
                             "address": "203.0.113.1",
                         }})),
        ])

        self.cloud.detach_ip_from_server(
            server_id='server-id', floating_ip_id=1)
        self.assert_calls()

    def test_add_ip_from_pool(self):
        self.register_uris([
            dict(method='GET',
                 uri=self.get_mock_url('compute', append=['os-floating-ips']),
                 json={'floating_ips': self.mock_floating_ip_list_rep}),
            dict(method='GET',
                 uri=self.get_mock_url('compute', append=['os-floating-ips']),
                 json={'floating_ips': self.mock_floating_ip_list_rep}),
            dict(method='POST',
                 uri=self.get_mock_url(
                     'compute',
                     append=['servers', self.fake_server['id'], 'action']),
                 validate=dict(
                     json={
                         "addFloatingIp": {
                             "address": "203.0.113.1",
                             "fixed_address": "192.0.2.129",
                         }})),
        ])

        server = self.cloud._add_ip_from_pool(
            server=self.fake_server,
            network='nova',
            fixed_address='192.0.2.129')

        self.assertEqual(server, self.fake_server)
        self.assert_calls()

    def test_cleanup_floating_ips(self):
        # This should not call anything because it's unsafe on nova.
        self.assertFalse(self.cloud.delete_unattached_floating_ips())

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