~ubuntu-branches/ubuntu/wily/heat/wily

#

#    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 uuid

from glanceclient import exc as glance_exceptions

import mock

import six

from heat.common import exception

from heat.engine.clients.os import glance

from heat.tests import common

from heat.tests import utils

class GlanceUtilsTests(common.HeatTestCase):

    """

    Basic tests for the helper methods in

    :module:'heat.engine.resources.clients.os.glance'.

    """

    def setUp(self):

        super(GlanceUtilsTests, self).setUp()

        self.glance_client = mock.MagicMock()

        con = utils.dummy_context()

        c = con.clients

        self.glance_plugin = c.client_plugin('glance')

        self.glance_plugin._client = self.glance_client

        self.my_image = mock.MagicMock()

    def test_get_image_id(self):

        """Tests the get_image_id function."""

        img_id = str(uuid.uuid4())

        img_name = 'myfakeimage'

        self.my_image.id = img_id

        self.my_image.name = img_name

        self.glance_client.images.get.return_value = self.my_image

        self.glance_client.images.list.side_effect = ([self.my_image], [])

        self.assertEqual(img_id, self.glance_plugin.get_image_id(img_id))

        self.assertEqual(img_id, self.glance_plugin.get_image_id(img_name))

        self.assertRaises(exception.EntityNotFound,

                          self.glance_plugin.get_image_id, 'noimage')

        calls = [mock.call(filters={'name': img_name}),

                 mock.call(filters={'name': 'noimage'})]

        self.glance_client.images.get.assert_called_once_with(img_id)

        self.glance_client.images.list.assert_has_calls(calls)

    def test_get_image_id_by_name_in_uuid(self):

        """Tests the get_image_id function by name in uuid."""

        img_id = str(uuid.uuid4())

        img_name = str(uuid.uuid4())

        self.my_image.id = img_id

        self.my_image.name = img_name

        self.glance_client.images.get.side_effect = [

            glance_exceptions.HTTPNotFound()]

        self.glance_client.images.list.return_value = [self.my_image]

        self.assertEqual(img_id, self.glance_plugin.get_image_id(img_name))

        self.glance_client.images.get.assert_called_once_with(img_name)

        self.glance_client.images.list.assert_called_once_with(

            filters={'name': img_name})

    def test_get_image_id_glance_exception(self):

        """Test get_image_id when glance raises an exception."""

        # Simulate HTTP exception

        img_name = str(uuid.uuid4())

        self.glance_client.images.list.side_effect = [

            glance_exceptions.ClientException("Error")]

        expected_error = "Error retrieving image list from glance: Error"

        e = self.assertRaises(exception.Error,

                              self.glance_plugin.get_image_id_by_name,

                              img_name)

        self.assertEqual(expected_error, six.text_type(e))

        self.glance_client.images.list.assert_called_once_with(

            filters={'name': img_name})

    def test_get_image_id_not_found(self):

        """Tests the get_image_id function while image is not found."""

        img_name = str(uuid.uuid4())

        self.glance_client.images.get.side_effect = [

            glance_exceptions.HTTPNotFound()]

        self.glance_client.images.list.return_value = []

        self.assertRaises(exception.EntityNotFound,

                          self.glance_plugin.get_image_id, img_name)

        self.glance_client.images.get.assert_called_once_with(img_name)

        self.glance_client.images.list.assert_called_once_with(

            filters={'name': img_name})

    def test_get_image_id_name_ambiguity(self):

        """Tests the get_image_id function while name ambiguity ."""

        img_name = 'ambiguity_name'

        self.my_image.name = img_name

        self.glance_client.images.list.return_value = [self.my_image,

                                                       self.my_image]

        self.assertRaises(exception.PhysicalResourceNameAmbiguity,

                          self.glance_plugin.get_image_id, img_name)

        self.glance_client.images.list.assert_called_once_with(

            filters={'name': img_name})

class ImageConstraintTest(common.HeatTestCase):

    def setUp(self):

        super(ImageConstraintTest, self).setUp()

        self.ctx = utils.dummy_context()

        self.mock_get_image = mock.Mock()

        self.ctx.clients.client_plugin(

            'glance').get_image_id = self.mock_get_image

        self.constraint = glance.ImageConstraint()

    def test_validation(self):

        self.mock_get_image.return_value = "id1"

        self.assertTrue(self.constraint.validate("foo", self.ctx))

    def test_validation_error(self):

        self.mock_get_image.side_effect = exception.EntityNotFound(

            entity='Image', name='bar')

        self.assertFalse(self.constraint.validate("bar", self.ctx))