#    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 testtools

from neutron.common import utils
from neutron.tests.functional import base


class TestWaitUntilTrue(base.BaseLoggingTestCase):
    def test_wait_until_true_predicate_succeeds(self):
        utils.wait_until_true(lambda: True)

    def test_wait_until_true_predicate_fails(self):
        with testtools.ExpectedException(utils.WaitTimeout):
            utils.wait_until_true(lambda: False, 2)
