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# Copyright 2015, 2018 IBM Corp.
#
# 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 mock
from taskflow import engines as tf_eng
from taskflow.patterns import linear_flow as tf_lf
from taskflow import task as tf_tsk
from nova import exception
from nova import test
from nova.virt.powervm.tasks import vm as tf_vm
class TestVMTasks(test.NoDBTestCase):
def setUp(self):
super(TestVMTasks, self).setUp()
self.apt = mock.Mock()
self.instance = mock.Mock()
@mock.patch('nova.virt.powervm.vm.get_instance_wrapper', autospec=True)
def test_get(self, mock_get_wrap):
get = tf_vm.Get(self.apt, self.instance)
get.execute()
mock_get_wrap.assert_called_once_with(self.apt, self.instance)
# Validate args on taskflow.task.Task instantiation
with mock.patch('taskflow.task.Task.__init__') as tf:
tf_vm.Get(self.apt, self.instance)
tf.assert_called_once_with(name='get_vm', provides='lpar_wrap')
@mock.patch('pypowervm.tasks.storage.add_lpar_storage_scrub_tasks',
autospec=True)
@mock.patch('nova.virt.powervm.vm.create_lpar')
def test_create(self, mock_vm_crt, mock_stg):
lpar_entry = mock.Mock()
# Test create with normal (non-recreate) ftsk
crt = tf_vm.Create(self.apt, 'host_wrapper', self.instance, 'ftsk')
mock_vm_crt.return_value = lpar_entry
crt.execute()
mock_vm_crt.assert_called_once_with(self.apt, 'host_wrapper',
self.instance)
mock_stg.assert_called_once_with(
[lpar_entry.id], 'ftsk', lpars_exist=True)
mock_stg.assert_called_once_with([mock_vm_crt.return_value.id], 'ftsk',
lpars_exist=True)
# Validate args on taskflow.task.Task instantiation
with mock.patch('taskflow.task.Task.__init__') as tf:
tf_vm.Create(self.apt, 'host_wrapper', self.instance, 'ftsk')
tf.assert_called_once_with(name='crt_vm', provides='lpar_wrap')
@mock.patch('nova.virt.powervm.vm.power_on')
def test_power_on(self, mock_pwron):
pwron = tf_vm.PowerOn(self.apt, self.instance)
pwron.execute()
mock_pwron.assert_called_once_with(self.apt, self.instance)
# Validate args on taskflow.task.Task instantiation
with mock.patch('taskflow.task.Task.__init__') as tf:
tf_vm.PowerOn(self.apt, self.instance)
tf.assert_called_once_with(name='pwr_vm')
@mock.patch('nova.virt.powervm.vm.power_on')
@mock.patch('nova.virt.powervm.vm.power_off')
def test_power_on_revert(self, mock_pwroff, mock_pwron):
flow = tf_lf.Flow('revert_power_on')
pwron = tf_vm.PowerOn(self.apt, self.instance)
flow.add(pwron)
# Dummy Task that fails, triggering flow revert
def failure(*a, **k):
raise ValueError()
flow.add(tf_tsk.FunctorTask(failure))
# When PowerOn.execute doesn't fail, revert calls power_off
self.assertRaises(ValueError, tf_eng.run, flow)
mock_pwron.assert_called_once_with(self.apt, self.instance)
mock_pwroff.assert_called_once_with(self.apt, self.instance,
force_immediate=True)
mock_pwron.reset_mock()
mock_pwroff.reset_mock()
# When PowerOn.execute fails, revert doesn't call power_off
mock_pwron.side_effect = exception.NovaException()
self.assertRaises(exception.NovaException, tf_eng.run, flow)
mock_pwron.assert_called_once_with(self.apt, self.instance)
mock_pwroff.assert_not_called()
@mock.patch('nova.virt.powervm.vm.power_off')
def test_power_off(self, mock_pwroff):
# Default force_immediate
pwroff = tf_vm.PowerOff(self.apt, self.instance)
pwroff.execute()
mock_pwroff.assert_called_once_with(self.apt, self.instance,
force_immediate=False)
mock_pwroff.reset_mock()
# Explicit force_immediate
pwroff = tf_vm.PowerOff(self.apt, self.instance, force_immediate=True)
pwroff.execute()
mock_pwroff.assert_called_once_with(self.apt, self.instance,
force_immediate=True)
# Validate args on taskflow.task.Task instantiation
with mock.patch('taskflow.task.Task.__init__') as tf:
tf_vm.PowerOff(self.apt, self.instance)
tf.assert_called_once_with(name='pwr_off_vm')
@mock.patch('nova.virt.powervm.vm.delete_lpar')
def test_delete(self, mock_dlt):
delete = tf_vm.Delete(self.apt, self.instance)
delete.execute()
mock_dlt.assert_called_once_with(self.apt, self.instance)
# Validate args on taskflow.task.Task instantiation
with mock.patch('taskflow.task.Task.__init__') as tf:
tf_vm.Delete(self.apt, self.instance)
tf.assert_called_once_with(name='dlt_vm')
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