# Copyright 2021 Red Hat
# 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.

from oslo_log import log as logging
from tempest import config

from whitebox_tempest_plugin.api.compute import base

CONF = config.CONF
LOG = logging.getLogger(__name__)


class TestVirtIORng(base.BaseWhiteboxComputeTest):
    """Tests checking VirtIO Rng device in the
       server XML
    """

    @classmethod
    def skip_checks(cls):
        super(TestVirtIORng, cls).skip_checks()
        if not CONF.compute_feature_enabled.virtio_rng:
            skip_msg = ("%s skipped as virtio-rng is "
                        "not enabled" % cls.__name__)
            raise cls.skipException(skip_msg)

    def test_virtio_rng_model(self):
        server = self.create_test_server(wait_until='ACTIVE')
        domain = self.get_server_xml(server['id'])
        rng_device = domain.find("devices/rng")
        self.assertEqual(
            rng_device.attrib['model'], 'virtio',
            "VirtIO-RNG device not present")

    def test_set_rng_device_false(self):
        extra_specs = {'hw_rng:allowed': 'False'}
        flavor_id = self.create_flavor(
            extra_specs=extra_specs)['id']
        server = self.create_test_server(flavor=flavor_id,
                                         wait_until='ACTIVE')
        domain = self.get_server_xml(server['id'])
        self.assertIsNone(domain.find("devices/rng"))