installers/charm/pla/tests/test_charm.py

#!/usr/bin/env python3
# Copyright 2020 Canonical Ltd.
#
# 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.
#
# For those usages not covered by the Apache License, Version 2.0 please
# contact: legal@canonical.com
#
# To get in touch with the maintainers, please contact:
# osm-charmers@lists.launchpad.net
##

from typing import NoReturn
import unittest

from ops.testing import Harness

from charm import PLACharm


class TestCharm(unittest.TestCase):
    """PLA Charm unit tests."""

    def setUp(self) -> NoReturn:
        """Test setup"""
        self.harness = Harness(PLACharm)
        self.harness.set_leader(is_leader=True)
        self.harness.begin()

    def test_on_start_without_relations(self) -> NoReturn:
        """Test installation without any relation."""
        self.harness.charm.on.config_changed.emit()


if __name__ == "__main__":
    unittest.main()