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OpenStack Study: test_neutron_context.py

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# Copyright 2012 VMware, Inc.

# 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

from testtools import matchers

from neutron import context

from neutron.openstack.common import local

from neutron.tests import base

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class TestNeutronContext(base.BaseTestCase):

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    def setUp(self):

        super(TestNeutronContext, self).setUp()

        db_api = 'neutron.db.api.get_session'

        self._db_api_session_patcher = mock.patch(db_api)

        self.db_api_session = self._db_api_session_patcher.start()

        self.addCleanup(self._db_api_session_patcher.stop)

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    def test_neutron_context_create(self):

        ctx = context.Context('user_id', 'tenant_id')

        self.assertEqual('user_id', ctx.user_id)

        self.assertEqual('tenant_id', ctx.project_id)

        self.assertEqual('tenant_id', ctx.tenant_id)

        self.assertThat(ctx.request_id, matchers.StartsWith('req-'))

        self.assertEqual('user_id', ctx.user)

        self.assertEqual('tenant_id', ctx.tenant)

        self.assertIsNone(ctx.user_name)

        self.assertIsNone(ctx.tenant_name)

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    def test_neutron_context_create_logs_unknown_kwarg(self):

        with mock.patch.object(context.LOG, 'debug') as mock_log:

            context.Context('user_id', 'tenant_id', foo=None)

        self.assertEqual(mock_log.call_count, 1)

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    def test_neutron_context_create_with_name(self):

        ctx = context.Context('user_id', 'tenant_id',

                              tenant_name='tenant_name', user_name='user_name')

        # Check name is set

        self.assertEqual('user_name', ctx.user_name)

        self.assertEqual('tenant_name', ctx.tenant_name)

        # Check user/tenant contains its ID even if user/tenant_name is passed

        self.assertEqual('user_id', ctx.user)

        self.assertEqual('tenant_id', ctx.tenant)

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    def test_neutron_context_create_with_request_id(self):

        ctx = context.Context('user_id', 'tenant_id', request_id='req_id_xxx')

        self.assertEqual('req_id_xxx', ctx.request_id)

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    def test_neutron_context_to_dict(self):

        ctx = context.Context('user_id', 'tenant_id')

        ctx_dict = ctx.to_dict()

        self.assertEqual('user_id', ctx_dict['user_id'])

        self.assertEqual('tenant_id', ctx_dict['project_id'])

        self.assertEqual(ctx.request_id, ctx_dict['request_id'])

        self.assertEqual('user_id', ctx_dict['user'])

        self.assertEqual('tenant_id', ctx_dict['tenant'])

        self.assertIsNone(ctx_dict['user_name'])

        self.assertIsNone(ctx_dict['tenant_name'])

        self.assertIsNone(ctx_dict['project_name'])

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    def test_neutron_context_to_dict_with_name(self):

        ctx = context.Context('user_id', 'tenant_id',

                              tenant_name='tenant_name', user_name='user_name')

        ctx_dict = ctx.to_dict()

        self.assertEqual('user_name', ctx_dict['user_name'])

        self.assertEqual('tenant_name', ctx_dict['tenant_name'])

        self.assertEqual('tenant_name', ctx_dict['project_name'])

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    def test_neutron_context_admin_to_dict(self):

        self.db_api_session.return_value = 'fakesession'

        ctx = context.get_admin_context()

        ctx_dict = ctx.to_dict()

        self.assertIsNone(ctx_dict['user_id'])

        self.assertIsNone(ctx_dict['tenant_id'])

        self.assertIsNotNone(ctx.session)

        self.assertNotIn('session', ctx_dict)

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    def test_neutron_context_admin_without_session_to_dict(self):

        ctx = context.get_admin_context_without_session()

        ctx_dict = ctx.to_dict()

        self.assertIsNone(ctx_dict['user_id'])

        self.assertIsNone(ctx_dict['tenant_id'])

        self.assertFalse(hasattr(ctx, 'session'))

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    def test_neutron_context_with_load_roles_true(self):

        ctx = context.get_admin_context()

        self.assertIn('admin', ctx.roles)

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    def test_neutron_context_with_load_roles_false(self):

        ctx = context.get_admin_context(load_admin_roles=False)

        self.assertFalse(ctx.roles)

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    def test_neutron_context_elevated_retains_request_id(self):

        ctx = context.Context('user_id', 'tenant_id')

        self.assertFalse(ctx.is_admin)

        req_id_before = ctx.request_id

        elevated_ctx = ctx.elevated()

        self.assertTrue(elevated_ctx.is_admin)

        self.assertEqual(req_id_before, elevated_ctx.request_id)

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    def test_neutron_context_overwrite(self):

        ctx1 = context.Context('user_id', 'tenant_id')

        self.assertEqual(ctx1.request_id, local.store.context.request_id)

        # If overwrite is not specified, request_id should be updated.

        ctx2 = context.Context('user_id', 'tenant_id')

        self.assertNotEqual(ctx2.request_id, ctx1.request_id)

        self.assertEqual(ctx2.request_id, local.store.context.request_id)

        # If overwrite is specified, request_id should be kept.

        ctx3 = context.Context('user_id', 'tenant_id', overwrite=False)

        self.assertNotEqual(ctx3.request_id, ctx2.request_id)

        self.assertEqual(ctx2.request_id, local.store.context.request_id)

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    def test_neutron_context_get_admin_context_not_update_local_store(self):

        ctx = context.Context('user_id', 'tenant_id')

        req_id_before = local.store.context.request_id

        self.assertEqual(ctx.request_id, req_id_before)

        ctx_admin = context.get_admin_context()

        self.assertEqual(req_id_before, local.store.context.request_id)

        self.assertNotEqual(req_id_before, ctx_admin.request_id)