tempest/smoke.py

# vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright 2012 OpenStack, LLC
# 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 logging

from tempest import test

LOG = logging.getLogger(__name__)


class SmokeTest(object):

    """
    Base test case class mixin for "smoke tests"

    Smoke tests are tests that have the following characteristics:

     * Test basic operations of an API, typically in an order that
       a regular user would perform those operations
     * Test only the correct inputs and action paths -- no fuzz or
       random input data is sent, only valid inputs.
     * Use only the default client tool for calling an API
    """
    pass


class DefaultClientSmokeTest(test.DefaultClientTest, SmokeTest):

    """
    Base smoke test case class that provides the default clients to
    access the various OpenStack APIs.
    """

    @classmethod
    def tearDownClass(cls):
        # NOTE(jaypipes): Because smoke tests are typically run in a specific
        # order, and because test methods in smoke tests generally create
        # resources in a particular order, we destroy resources in the reverse
        # order in which resources are added to the smoke test class object
        while cls.resources:
            thing = cls.resources.pop()
            LOG.debug("Deleting %r from shared resources of %s" %
                      (thing, cls.__name__))

            try:
                # OpenStack resources are assumed to have a delete()
                # method which destroys the resource...
                thing.delete()
            except Exception as e:
                # If the resource is already missing, mission accomplished.
                if e.__class__.__name__ == 'NotFound':
                    continue
                raise

            def is_deletion_complete():
                # Deletion testing is only required for objects whose
                # existence cannot be checked via retrieval.
                if isinstance(thing, dict):
                    return True
                try:
                    thing.get()
                except Exception as e:
                    # Clients are expected to return an exception
                    # called 'NotFound' if retrieval fails.
                    if e.__class__.__name__ == 'NotFound':
                        return True
                    raise
                return False

            # Block until resource deletion has completed or timed-out
            test.call_until_true(is_deletion_complete, 10, 1)