#!/usr/bin/env python3

# Copyright 2021 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.

"""Tests for gnocchi charm."""

import ops_sunbeam.test_utils as test_utils

import charm


class _CeilometerOperatorCharm(charm.CeilometerOperatorCharm):
    def __init__(self, framework):
        self.seen_events = []
        super().__init__(framework)

    def _log_event(self, event):
        self.seen_events.append(type(event).__name__)

    def configure_charm(self, event):
        super().configure_charm(event)
        self._log_event(event)


class TestCeilometerOperatorCharm(test_utils.CharmTestCase):
    """Class for testing gnocchi charm."""

    PATCHES = []

    def setUp(self):
        """Run setup for unit tests."""
        super().setUp(charm, self.PATCHES)
        self.harness = test_utils.get_harness(
            _CeilometerOperatorCharm, container_calls=self.container_calls
        )

    def test_pebble_ready_handler(self):
        """Test Pebble ready event is captured."""
        self.harness.begin()
        self.assertEqual(self.harness.charm.seen_events, [])
        test_utils.set_all_pebbles_ready(self.harness)
        self.assertEqual(len(self.harness.charm.seen_events), 2)

    def test_all_relations(self):
        """Test all the charms relations."""
        self.harness.begin_with_initial_hooks()
        self.harness.set_leader()
        test_utils.set_all_pebbles_ready(self.harness)
        test_utils.add_complete_identity_credentials_relation(self.harness)
        test_utils.add_complete_amqp_relation(self.harness)
        self.harness.add_relation(
            "gnocchi-db", "gnocchi", app_data={"ready": "true"}
        )

        for c in ["ceilometer-central", "ceilometer-notification"]:
            self.check_file(c, "/etc/ceilometer/ceilometer.conf")