# -*- coding: utf-8 -*-

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

#    Copyright (C) 2012 Yahoo! Inc. 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 unittest2


class TestCase(unittest2.TestCase):
    """Test case base class for all unit tests."""

    def setUp(self):
        super(TestCase, self).setUp()

    def tearDown(self):
        super(TestCase, self).tearDown()

    def assertIsSubset(self, super_set, sub_set, msg=None):
        missing_set = set()
        for e in sub_set:
            if e not in super_set:
                missing_set.add(e)
        if len(missing_set):
            if msg is not None:
                self.fail(msg)
            else:
                self.fail("Subset %s has %s elements which are not in the "
                          "superset %s." % (sub_set, list(missing_set),
                                            list(super_set)))