Added unit tests for service/api module
Added tests for complex functions in service/api module, because there no unit tests for that module Change-Id: I20d05f6ea6c6980d004b9e3707c0dc9455305510
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sahara/tests/unit/service/test_api.py
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sahara/tests/unit/service/test_api.py
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# Copyright (c) 2015 Mirantis Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import mock
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import oslo_messaging
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import six
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import testtools
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from sahara import conductor as cond
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from sahara import context
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from sahara import exceptions as exc
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from sahara.plugins import base as pl_base
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from sahara.service import api
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from sahara.tests.unit import base
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conductor = cond.API
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SAMPLE_CLUSTER = {
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'plugin_name': 'fake',
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'hadoop_version': 'test_version',
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'tenant_id': 'tenant_1',
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'name': 'test_cluster',
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'user_keypair_id': 'my_keypair',
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'node_groups': [
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{
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'auto_security_group': True,
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'name': 'ng_1',
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'flavor_id': '42',
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'node_processes': ['p1', 'p2'],
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'count': 1
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},
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{
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'auto_security_group': False,
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'name': 'ng_2',
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'flavor_id': '42',
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'node_processes': ['p3', 'p4'],
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'count': 3
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},
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{
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'auto_security_group': False,
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'name': 'ng_3',
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'flavor_id': '42',
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'node_processes': ['p3', 'p4'],
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'count': 1
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}
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],
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'cluster_configs': {
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'service_1': {
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'config_2': 'value_2'
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},
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'service_2': {
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'config_1': 'value_1'
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}
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},
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}
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SCALE_DATA = {
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'resize_node_groups': [
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{
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'name': 'ng_1',
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'count': 3,
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},
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{
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'name': 'ng_2',
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'count': 2,
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}
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],
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'add_node_groups': [
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{
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'auto_security_group': True,
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'name': 'ng_4',
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'flavor_id': '42',
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'node_processes': ['p1', 'p2'],
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'count': 1
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},
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]
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}
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class FakePlugin(object):
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_info = {}
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def __init__(self, calls_order):
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self.calls_order = calls_order
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def validate(self, cluster):
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self.calls_order.append('validate')
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def get_open_ports(self, node_group):
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self.calls_order.append('get_open_ports')
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def validate_scaling(self, cluster, to_be_enlarged, additional):
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self.calls_order.append('validate_scaling')
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def as_resource(self):
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return FakePlugin(self.calls_order)
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def get_versions(self):
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return ['0.1', '0.2']
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def get_required_image_tags(self, version):
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return ['fake']
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def get_node_processes(self, version):
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return ['namenode', 'datanode']
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def get_configs(self, version):
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return {}
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class FakePluginManager(object):
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def __init__(self, calls_order):
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self.calls = calls_order
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def get_plugin(self, plugin_name):
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if plugin_name == "fake":
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return FakePlugin(self.calls)
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return None
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class FakeOps(object):
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def __init__(self, calls_order):
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self.calls_order = calls_order
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def provision_cluster(self, id):
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self.calls_order.append('ops.provision_cluster')
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conductor.cluster_update(context.ctx(), id, {'status': 'Active'})
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def provision_scaled_cluster(self, id, to_be_enlarged):
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self.calls_order.append('ops.provision_scaled_cluster')
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# Set scaled to see difference between active and scaled
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for (ng, count) in six.iteritems(to_be_enlarged):
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conductor.node_group_update(context.ctx(), ng, {'count': count})
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conductor.cluster_update(context.ctx(), id, {'status': 'Scaled'})
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def terminate_cluster(self, id):
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self.calls_order.append('ops.terminate_cluster')
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class TestApi(base.SaharaWithDbTestCase):
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def setUp(self):
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super(TestApi, self).setUp()
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self.calls_order = []
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pl_base.PLUGINS = FakePluginManager(self.calls_order)
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api.setup_service_api(FakeOps(self.calls_order))
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oslo_messaging.notify.notifier.Notifier.info = mock.Mock()
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self.ctx = context.ctx()
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@mock.patch('sahara.service.quotas.check_cluster', return_value=None)
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def test_create_cluster_success(self, check_cluster):
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cluster = api.create_cluster(SAMPLE_CLUSTER)
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self.assertEqual(1, check_cluster.call_count)
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result_cluster = api.get_cluster(cluster.id)
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self.assertEqual('Active', result_cluster.status)
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expected_count = {
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'ng_1': 1,
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'ng_2': 3,
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'ng_3': 1,
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}
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ng_count = 0
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for ng in result_cluster.node_groups:
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self.assertEqual(expected_count[ng.name], ng.count)
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ng_count += 1
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self.assertEqual(3, ng_count)
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api.terminate_cluster(result_cluster.id)
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self.assertEqual(
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['get_open_ports', 'validate',
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'ops.provision_cluster',
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'ops.terminate_cluster'], self.calls_order)
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@mock.patch('sahara.service.quotas.check_cluster')
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def test_create_cluster_failed(self, check_cluster):
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check_cluster.side_effect = exc.QuotaException(
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'resource', 'requested', 'available')
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with testtools.ExpectedException(exc.QuotaException):
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api.create_cluster(SAMPLE_CLUSTER)
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self.assertEqual('Error', api.get_clusters()[0].status)
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@mock.patch('sahara.service.quotas.check_cluster', return_value=None)
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@mock.patch('sahara.service.quotas.check_scaling', return_value=None)
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def test_scale_cluster_success(self, check_scaling, check_cluster):
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cluster = api.create_cluster(SAMPLE_CLUSTER)
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api.scale_cluster(cluster.id, SCALE_DATA)
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result_cluster = api.get_cluster(cluster.id)
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self.assertEqual('Scaled', result_cluster.status)
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expected_count = {
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'ng_1': 3,
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'ng_2': 2,
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'ng_3': 1,
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'ng_4': 1,
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}
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ng_count = 0
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for ng in result_cluster.node_groups:
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self.assertEqual(expected_count[ng.name], ng.count)
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ng_count += 1
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self.assertEqual(4, ng_count)
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api.terminate_cluster(result_cluster.id)
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self.assertEqual(
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['get_open_ports', 'validate', 'ops.provision_cluster',
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'get_open_ports', 'get_open_ports', 'validate_scaling',
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'ops.provision_scaled_cluster',
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'ops.terminate_cluster'], self.calls_order)
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@mock.patch('sahara.service.quotas.check_cluster', return_value=None)
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@mock.patch('sahara.service.quotas.check_scaling', return_value=None)
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def test_scale_cluster_failed(self, check_scaling, check_cluster):
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cluster = api.create_cluster(SAMPLE_CLUSTER)
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check_scaling.side_effect = exc.QuotaException(
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'resource', 'requested', 'available')
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with testtools.ExpectedException(exc.QuotaException):
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api.scale_cluster(cluster.id, {})
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def test_get_plugin(self):
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api.get_plugin('fake', '0.1')
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api.get_plugin('fake', '0.3')
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api.get_plugin('fake')
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self.assertIsNone(api.get_plugin('name1', '0.1'))
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