# Copyright 2016: Mirantis 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.

from unittest import mock

import ddt
import os_faults
from os_faults.api import error

from rally import consts
from rally.task import hook

from rally_openstack.task.hooks import fault_injection
from tests.unit import fakes
from tests.unit import test


@ddt.ddt
class FaultInjectionHookTestCase(test.TestCase):

    def setUp(self):
        super(FaultInjectionHookTestCase, self).setUp()
        self.task = {"deployment_uuid": "foo_uuid"}

    @ddt.data((dict(action="foo"), True),
              (dict(action="foo", verify=True), True),
              (dict(action=10), False),
              (dict(action="foo", verify=10), False),
              (dict(), False))
    @ddt.unpack
    def test_config_schema(self, config, valid):
        results = hook.HookAction.validate("fault_injection", None, None,
                                           config)
        if valid:
            self.assertEqual([], results)
        else:
            self.assertEqual(1, len(results))

    @mock.patch("rally.common.objects.Deployment.get")
    @mock.patch("rally.common.utils.Timer", side_effect=fakes.FakeTimer)
    def test_run(self, mock_timer, mock_deployment_get):
        mock_deployment_get.return_value = {"config": {}}
        hook = fault_injection.FaultInjectionHook(
            self.task, {"action": "foo", "verify": True},
            {"iteration": 1})

        with mock.patch.object(os_faults, "human_api") as mock_human_api:
            with mock.patch.object(os_faults, "connect") as mock_connect:
                hook.run_sync()

                injector_inst = mock_connect.return_value

                mock_connect.assert_called_once_with(None)
                mock_human_api.assert_called_once_with(injector_inst, "foo")

        self.assertEqual(
            {"finished_at": fakes.FakeTimer().finish_timestamp(),
             "started_at": fakes.FakeTimer().timestamp(),
             "status": consts.HookStatus.SUCCESS,
             "triggered_by": {"iteration": 1}},
            hook.result())
        injector_inst.verify.assert_called_once_with()

    @mock.patch("rally.common.objects.Deployment.get")
    @mock.patch("rally.common.utils.Timer", side_effect=fakes.FakeTimer)
    def test_run_extra_config(self, mock_timer, mock_deployment_get):
        mock_deployment_get.return_value = {
            "config": {"type": "ExistingCloud",
                       "extra": {"cloud_config": {"conf": "foo_config"}}}}
        hook = fault_injection.FaultInjectionHook(
            self.task, {"action": "foo"}, {"iteration": 1})

        with mock.patch.object(os_faults, "human_api") as mock_human_api:
            with mock.patch.object(os_faults, "connect") as mock_connect:
                hook.run_sync()

                injector_inst = mock_connect.return_value

                mock_connect.assert_called_once_with({"conf": "foo_config"})
                mock_human_api.assert_called_once_with(injector_inst, "foo")

        self.assertEqual(
            {"finished_at": fakes.FakeTimer().finish_timestamp(),
             "started_at": fakes.FakeTimer().timestamp(),
             "status": consts.HookStatus.SUCCESS,
             "triggered_by": {"iteration": 1}},
            hook.result())

    @mock.patch("rally.common.objects.Deployment.get")
    @mock.patch("os_faults.human_api")
    @mock.patch("os_faults.connect")
    @mock.patch("rally.common.utils.Timer", side_effect=fakes.FakeTimer)
    def test_run_error(self, mock_timer, mock_connect, mock_human_api,
                       mock_deployment_get):
        mock_deployment_get.return_value = {"config": {}}
        injector_inst = mock_connect.return_value
        mock_human_api.side_effect = error.OSFException("foo error")
        hook = fault_injection.FaultInjectionHook(
            self.task, {"action": "foo", "verify": True},
            {"iteration": 1})

        hook.run_sync()

        self.assertEqual(
            {"finished_at": fakes.FakeTimer().finish_timestamp(),
             "started_at": fakes.FakeTimer().timestamp(),
             "status": consts.HookStatus.FAILED,
             "error": {
                 "details": mock.ANY,
                 "etype": "OSFException",
                 "msg": "foo error"},
             "triggered_by": {"iteration": 1}},
            hook.result())

        mock_connect.assert_called_once_with(None)
        injector_inst.verify.assert_called_once_with()
        mock_human_api.assert_called_once_with(injector_inst, "foo")