#!/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.

"""Unit tests for core Cinder charm class."""

import charm
import ops_sunbeam.test_utils as test_utils


class _CinderOperatorCharm(charm.CinderOperatorCharm):
    """Test implementation of Cinder operator."""

    def __init__(self, framework):
        self.seen_events = []
        self.render_calls = []
        super().__init__(framework)

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

    def renderer(self, containers, container_configs, template_dir, adapters):
        """Intercept and record all calls to render config files."""
        self.render_calls.append(
            (containers, container_configs, template_dir, adapters)
        )

    def configure_charm(self, event):
        """Intercept and record full charm configuration events."""
        super().configure_charm(event)
        self._log_event(event)


class TestCinderOperatorCharm(test_utils.CharmTestCase):
    """Unit tests for Cinder Operator."""

    PATCHES = []

    def setUp(self):
        """Setup test fixtures for test."""
        self.container_calls = {"push": {}, "pull": [], "remove_path": []}
        super().setUp(charm, self.PATCHES)
        self.harness = test_utils.get_harness(
            _CinderOperatorCharm, container_calls=self.container_calls
        )
        self.addCleanup(self.harness.cleanup)
        self.harness.begin()

    def test_pebble_ready_handler(self):
        """Test pebble ready event handling."""
        self.assertEqual(self.harness.charm.seen_events, [])
        self.harness.container_pebble_ready("cinder-api")
        self.assertEqual(self.harness.charm.seen_events, ["PebbleReadyEvent"])