sahara/sahara/tests/unit/test_context.py

# Copyright (c) 2013 Mirantis Inc.
#
# 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 functools
import random

import fixtures
import mock
import six
import testtools

from sahara import context
from sahara import exceptions as ex
from sahara.tests.unit import base as test_base


rnd = random.Random()


class ContextTest(testtools.TestCase):
    def setUp(self):
        super(ContextTest, self).setUp()
        self.useFixture(fixtures.FakeLogger('sahara'))
        ctx = context.Context('test_user', 'tenant_1', 'test_auth_token', {},
                              remote_semaphore='123')
        context.set_ctx(ctx)

    def _add_element(self, lst, i):
        context.sleep(rnd.uniform(0, 0.1))
        lst.append(i)

    def _raise_test_exc(self, exc_msg):
        raise TestException(exc_msg)

    def test_thread_group_waits_threads(self):
        # That can fail with some probability, so making 5 attempts
        # Actually it takes around 1 second, so maybe we should
        # just remove it
        for _ in six.moves.range(5):
            lst = []

            with context.ThreadGroup() as tg:
                for i in six.moves.range(400):
                    tg.spawn('add %i' % i, self._add_element, lst, i)

            self.assertEqual(400, len(lst))

    def test_thread_group_waits_threads_if_spawning_exception(self):
        lst = []

        with testtools.ExpectedException(RuntimeError):
            with context.ThreadGroup() as tg:
                for i in six.moves.range(400):
                    tg.spawn('add %i' % i, self._add_element, lst, i)

                raise RuntimeError()

        self.assertEqual(400, len(lst))

    def test_thread_group_waits_threads_if_child_exception(self):
        lst = []

        with testtools.ExpectedException(ex.ThreadException):
            with context.ThreadGroup() as tg:
                tg.spawn('raiser', self._raise_test_exc, 'exc')

                for i in six.moves.range(400):
                    tg.spawn('add %i' % i, self._add_element, lst, i)

        self.assertEqual(400, len(lst))

    def test_thread_group_handles_spawning_exception(self):
        with testtools.ExpectedException(TestException):
            with context.ThreadGroup():
                raise TestException()

    def test_thread_group_handles_child_exception(self):
        try:
            with context.ThreadGroup() as tg:
                tg.spawn('raiser1', self._raise_test_exc, 'exc1')
        except ex.ThreadException as te:
            self.assertIn('exc1', six.text_type(te))
            self.assertIn('raiser1', six.text_type(te))

    def test_thread_group_prefers_spawning_exception(self):
        with testtools.ExpectedException(RuntimeError):
            with context.ThreadGroup() as tg:
                tg.spawn('raiser1', self._raise_test_exc, 'exc1')
                raise RuntimeError()

    def test_wrapper_does_not_set_exception(self):
        func = mock.MagicMock()

        tg = mock.MagicMock(exc=None, failed_thread=None)

        context._wrapper(None, 'test thread', tg, func)

        self.assertIsNone(tg.exc)
        self.assertIsNone(tg.failed_thread)

    def test_wrapper_catches_base_exception(self):
        func = mock.MagicMock()
        func.side_effect = BaseException()

        tg = mock.MagicMock(exc=None, failed_thread=None)

        context._wrapper(None, 'test thread', tg, func)

        self.assertIsNotNone(tg.exc)
        self.assertEqual('test thread', tg.failed_thread)

    def test_is_auth_capable_for_admin_ctx(self):
        ctx = context.ctx()
        self.assertFalse(ctx.is_auth_capable())

    def test_is_auth_capable_for_user_ctx(self):
        existing_ctx = context.ctx()
        try:
            ctx = context.Context('test_user', 'tenant_1', 'test_auth_token',
                                  {"network": "aURL"}, remote_semaphore='123')
            self.assertTrue(ctx.is_auth_capable())
        finally:
            context.set_ctx(existing_ctx)


class TestException(Exception):
    pass


class GetAuthURITest(test_base.SaharaTestCase):
    def setUp(self):
        super(GetAuthURITest, self).setUp()

        self.override_auth_config = functools.partial(
            self.override_config, group='keystone_authtoken')

    def test_get_auth_url_from_auth_uri_param(self):
        self.override_auth_config('auth_uri', 'http://pony:5000/v2.0')
        self.assertEqual('http://pony:5000/v2.0', context._get_auth_uri())

    def test_get_auth_uri_from_identity_uri(self):
        self.override_auth_config('identity_uri', 'http://spam:35357')
        self.assertEqual('http://spam:35357/v3', context._get_auth_uri())

        self.override_config('use_identity_api_v3', False)
        self.assertEqual('http://spam:35357/v2.0', context._get_auth_uri())

    def test_get_auth_uri_from_auth_params(self):
        self.override_auth_config('auth_host', 'eggs')
        self.override_auth_config('auth_port', 12345)
        self.override_auth_config('auth_protocol', 'http')
        self.assertEqual('http://eggs:12345/v3', context._get_auth_uri())

        self.override_config('use_identity_api_v3', False)
        self.assertEqual('http://eggs:12345/v2.0', context._get_auth_uri())