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from argparse import Namespace
from datetime import (
datetime,
)
from mock import (
Mock,
patch,
)
try:
# Import none-unicode first because it means unicode is not default.
from StringIO import StringIO
except ImportError:
from io import StringIO
from tests import TestCase
import gce
GCE_ENVIRON = {
'GCE_SA_EMAIL': 'me@serviceaccount.google.com',
'GCE_PEM_PATH': '/gce-serveraccount.json',
'GCE_PROJECT_ID': 'test-project',
}
def make_fake_client():
client = Mock(['list_nodes', 'destroy_node'])
return client
def make_fake_node(name='foo', state='running',
zone=None, created=None, tags=None):
node = Mock(extra={}, state=state)
# Overide the mock name callable with a Node name attribute.
node.name = name
# Zone is not guaranteed, but when it is present, it is a object
if zone:
zone_region = Mock()
zone_region.name = zone
node.extra['zone'] = zone_region
if tags:
node.extra['tags'] = tags
if created:
node.extra['creationTimestamp'] = created
return node
class GCETestCase(TestCase):
test_environ = GCE_ENVIRON
def test_main_list_instances(self):
client = make_fake_client()
with patch('gce.get_client', autospec=True,
return_value=client) as gc_mock:
with patch('gce.list_instances', autospec=True) as li_mock:
with patch.dict('os.environ', GCE_ENVIRON):
code = gce.main(
['gce.py', 'list-instances', 'juju-deploy*'])
self.assertEqual(0, code)
gc_mock.assert_called_once_with(
GCE_ENVIRON['GCE_SA_EMAIL'], GCE_ENVIRON['GCE_PEM_PATH'],
GCE_ENVIRON['GCE_PROJECT_ID'], region=None)
li_mock.assert_called_once_with(
client, glob='juju-deploy*', print_out=True)
def test_main_list_instances_region(self):
client = make_fake_client()
with patch('gce.get_client', autospec=True,
return_value=client) as gc_mock:
with patch('gce.list_instances', autospec=True) as li_mock:
with patch.dict('os.environ', GCE_ENVIRON):
code = gce.main(
['gce.py', '--region', 'test-region', 'list-instances',
'juju-deploy*'])
self.assertEqual(0, code)
gc_mock.assert_called_once_with(
GCE_ENVIRON['GCE_SA_EMAIL'], GCE_ENVIRON['GCE_PEM_PATH'],
GCE_ENVIRON['GCE_PROJECT_ID'], region='test-region')
li_mock.assert_called_once_with(
client, glob='juju-deploy*', print_out=True)
def test_main_delete_instance(self):
client = make_fake_client()
with patch('gce.get_client', autospec=True,
return_value=client) as gc_mock:
with patch('gce.delete_instances', autospec=True) as di_mock:
with patch.dict('os.environ', GCE_ENVIRON):
code = gce.main(
['gce.py', 'delete-instances', '-o', '2',
'juju-deploy*'])
self.assertEqual(0, code)
gc_mock.assert_called_once_with(
GCE_ENVIRON['GCE_SA_EMAIL'], GCE_ENVIRON['GCE_PEM_PATH'],
GCE_ENVIRON['GCE_PROJECT_ID'], region=None)
di_mock.assert_called_once_with(
client, 'juju-deploy*', old_age=2, dry_run=False)
def test_get_client(self):
client = Mock(spec=['ex_get_zone'])
client.return_value.ex_get_zone.return_value = 'bar'
with patch('libcloud.compute.providers.get_driver', autospec=True
) as gl_mock:
gl_mock.return_value = client
gce.get_client(GCE_ENVIRON['GCE_SA_EMAIL'],
GCE_ENVIRON['GCE_PEM_PATH'],
GCE_ENVIRON["GCE_PROJECT_ID"], region='foo')
gl_mock.assert_called_once_with('gce')
client.return_value.ex_get_zone.assert_called_once_with('foo')
def test_get_client_no_region(self):
client = Mock(spec=['ex_get_zone'])
client.return_value.ex_get_zone.return_value = 'bar'
with patch('libcloud.compute.providers.get_driver', autospec=True
) as gl_mock:
gl_mock.return_value = client
gce.get_client(GCE_ENVIRON['GCE_SA_EMAIL'],
GCE_ENVIRON['GCE_PEM_PATH'],
GCE_ENVIRON["GCE_PROJECT_ID"], region=None)
gl_mock.assert_called_once_with('gce')
self.assertEqual(client.return_value.ex_get_zone.call_count, 0)
def test_get_client_exception(self):
client = Mock(spec=['ex_get_zone'])
client.return_value.ex_get_zone.return_value = None
with patch('libcloud.compute.providers.get_driver', autospec=True
) as gl_mock:
gl_mock.return_value = client
with self.assertRaises(ValueError):
gce.get_client(GCE_ENVIRON['GCE_SA_EMAIL'],
GCE_ENVIRON['GCE_PEM_PATH'],
GCE_ENVIRON["GCE_PROJECT_ID"], region='foo')
gl_mock.assert_called_once_with('gce')
def test_parse_args_delete_instaces(self):
with patch.dict('os.environ', GCE_ENVIRON):
args = gce.parse_args(
['gce.py', '-v', '-d',
'delete-instances', '-o', '2', 'juju-deploy*'])
expected = Namespace(
command='delete-instances', dry_run=True, filter='juju-deploy*',
old_age=2, pem_path='/gce-serveraccount.json',
project_id='test-project', region=None,
sa_email='me@serviceaccount.google.com', verbose=10)
self.assertEqual(expected, args)
def test_parse_args_list_instances(self):
with patch.dict('os.environ', GCE_ENVIRON):
args = gce.parse_args(
['gce.py', '-v', '-d', 'list-instances', 'juju-deploy*'])
expected = Namespace(
command='list-instances', dry_run=True, filter='juju-deploy*',
pem_path='/gce-serveraccount.json', project_id='test-project',
region=None, sa_email='me@serviceaccount.google.com',
verbose=10)
self.assertEqual(expected, args)
def test_parse_args_without_env(self):
args = gce.parse_args(
['gce.py', '-v', '-d',
'--sa-email', 'me@serviceaccount.google.com',
'--pem-path', '/gce-serveraccount.json',
'--project-id', 'test-project',
'delete-instances', '-o', '2', 'juju-deploy*'])
expected = Namespace(
command='delete-instances', dry_run=True, filter='juju-deploy*',
old_age=2, pem_path='/gce-serveraccount.json',
project_id='test-project', region=None,
sa_email='me@serviceaccount.google.com', verbose=10)
self.assertEqual(expected, args)
def test_is_permanent_true(self):
node = make_fake_node(tags=['permanent', 'bingo'])
self.assertIsTrue(gce.is_permanent(node))
def test_is_permanent_false(self):
node = make_fake_node(tags=['bingo'])
self.assertIsFalse(gce.is_permanent(node))
def test_is_permanent_no_tags(self):
node = make_fake_node(tags=[])
self.assertIsFalse(gce.is_permanent(node))
def test_is_young_true(self):
now = datetime.utcnow()
hour_ago = '{}-01:00'.format(now.isoformat())
node = make_fake_node(created=hour_ago)
self.assertIsTrue(gce.is_young(node, gce.OLD_MACHINE_AGE))
def test_is_young_false(self):
node = make_fake_node(created='2016-11-01T13:06:23.968-08:00')
self.assertIsFalse(gce.is_young(node, gce.OLD_MACHINE_AGE))
def test_is_young_no_created(self):
node = make_fake_node()
self.assertEqual({}, node.extra)
self.assertIsTrue(gce.is_young(node, gce.OLD_MACHINE_AGE))
def test_list_instances(self):
no_node = make_fake_node(name='bingo')
yes_node = make_fake_node(name='juju-controller')
client = make_fake_client()
client.list_nodes.return_value = [no_node, yes_node]
found = gce.list_instances(client, 'juju-*')
client.list_nodes.assert_called_once_with()
self.assertEqual([yes_node], found)
def test_list_instances_with_print(self):
node_one = make_fake_node(name='juju-controller')
node_two = make_fake_node(
name='juju-app', created='2016-11-01T13:01:01.0+01:00',
zone='us-west1')
client = make_fake_client()
client.list_nodes.return_value = [node_one, node_two]
with patch('sys.stdout', new_callable=StringIO) as so_sio:
found = gce.list_instances(client, 'juju-*', print_out=True)
client.list_nodes.assert_called_once_with()
self.assertEqual([node_one, node_two], found)
self.assertEqual(
'juju-controller\tUNKNOWN\tNone\trunning\njuju-app\tus-west1\t'
'2016-11-01T13:01:01.0+01:00\trunning\n',
so_sio.getvalue())
def test_delete_instances(self):
now = datetime.utcnow()
hour_ago = '{}-01:00'.format(now.isoformat())
young_node = make_fake_node(name='juju-young', created=hour_ago)
perm_node = make_fake_node(name='juju-perm', tags=['permanent'])
old_node = make_fake_node(
name='juju-old', created='2016-11-01T13:06:23.968-08:00')
client = make_fake_client()
client.list_nodes.return_value = [young_node, perm_node, old_node]
count = gce.delete_instances(
client, 'juju-*', old_age=gce.OLD_MACHINE_AGE)
self.assertEqual(1, count)
client.destroy_node.assert_called_once_with(old_node)
def test_delete_instances_none_found(self):
client = make_fake_client()
client.list_nodes.return_value = []
count = gce.delete_instances(client, 'juju-*')
self.assertEqual(0, count)
self.assertEqual(0, client.destroy_node.call_count)
self.assertEqual(
'WARNING The no machines match juju-* that are older than 14\n',
self.log_stream.getvalue())
def test_delete_instances_destroy_failed(self):
old_node = make_fake_node(
name='juju-old', created='2016-11-01T13:06:23.968-08:00')
client = make_fake_client()
client.list_nodes.return_value = [old_node]
client.destroy_node.return_value = False
count = gce.delete_instances(client, 'juju-*')
self.assertEqual(0, count)
self.assertEqual(1, client.destroy_node.call_count)
self.assertEqual(
'ERROR Cannot delete juju-old\n',
self.log_stream.getvalue())
|