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import os
import signal
import unittest
from pathlib import Path
from test.podman_testcase import PodmanTestCase
from test.retry_decorator import retry
import podman
class TestContainers(PodmanTestCase):
@classmethod
def setUpClass(cls):
super().setUpClass()
@classmethod
def tearDownClass(cls):
super().tearDownClass()
def setUp(self):
self.tmpdir = os.environ['TMPDIR']
self.host = os.environ['PODMAN_HOST']
self.pclient = podman.Client(self.host)
self.loadCache()
def tearDown(self):
pass
def loadCache(self):
self.containers = list(self.pclient.containers.list())
self.alpine_ctnr = next(
iter([c for c in self.containers if 'alpine' in c['image']] or []),
None)
if self.alpine_ctnr and self.alpine_ctnr.status != 'running':
self.alpine_ctnr.start()
def test_list(self):
self.assertGreaterEqual(len(self.containers), 2)
self.assertIsNotNone(self.alpine_ctnr)
self.assertIn('alpine', self.alpine_ctnr.image)
def test_delete_stopped(self):
before = len(self.containers)
self.alpine_ctnr.stop()
target = self.alpine_ctnr.id
actual = self.pclient.containers.delete_stopped()
self.assertIn(target, actual)
self.loadCache()
after = len(self.containers)
self.assertLess(after, before)
TestContainers.setUpClass()
def test_get(self):
actual = self.pclient.containers.get(self.alpine_ctnr.id)
for k in ['id', 'status', 'ports']:
self.assertEqual(actual[k], self.alpine_ctnr[k])
with self.assertRaises(podman.ContainerNotFound):
self.pclient.containers.get("bozo")
def test_attach(self):
# StringIO does not support fileno() so we had to go old school
input = os.path.join(self.tmpdir, 'test_attach.stdin')
output = os.path.join(self.tmpdir, 'test_attach.stdout')
with open(input, 'w+') as mock_in, open(output, 'w+') as mock_out:
# double quote is indeed in the expected place
mock_in.write('echo H"ello, World"; exit\n')
mock_in.seek(0, 0)
ctnr = self.pclient.images.get(self.alpine_ctnr.image).container(
detach=True, tty=True)
ctnr.attach(stdin=mock_in.fileno(), stdout=mock_out.fileno())
ctnr.start()
mock_out.flush()
mock_out.seek(0, 0)
output = mock_out.read()
self.assertIn('Hello', output)
ctnr.remove(force=True)
def test_processes(self):
actual = list(self.alpine_ctnr.processes())
self.assertGreaterEqual(len(actual), 2)
def test_start_stop_wait(self):
ctnr = self.alpine_ctnr.stop()
self.assertFalse(ctnr['running'])
ctnr.start()
self.assertTrue(ctnr.running)
ctnr.stop()
self.assertFalse(ctnr['containerrunning'])
actual = ctnr.wait()
self.assertGreaterEqual(actual, 0)
def test_changes(self):
actual = self.alpine_ctnr.changes()
self.assertListEqual(
sorted(['changed', 'added', 'deleted']), sorted(
list(actual.keys())))
# TODO: brittle, depends on knowing history of ctnr
self.assertGreaterEqual(len(actual['changed']), 0)
self.assertGreaterEqual(len(actual['added']), 0)
self.assertEqual(len(actual['deleted']), 0)
def test_kill(self):
self.assertTrue(self.alpine_ctnr.running)
ctnr = self.alpine_ctnr.kill(signal.SIGKILL)
self.assertFalse(ctnr.running)
def test_inspect(self):
actual = self.alpine_ctnr.inspect()
self.assertEqual(actual.id, self.alpine_ctnr.id)
# TODO: Datetime values from inspect missing offset in CI instance
# self.assertEqual(
# datetime_parse(actual.created),
# datetime_parse(self.alpine_ctnr.createdat))
def test_export(self):
target = os.path.join(self.tmpdir, 'alpine_export_ctnr.tar')
actual = self.alpine_ctnr.export(target)
self.assertEqual(actual, target)
self.assertTrue(os.path.isfile(target))
self.assertGreater(os.path.getsize(target), 0)
def test_commit(self):
# TODO: Test for STOPSIGNAL when supported by OCI
# TODO: Test for message when supported by OCI
details = self.pclient.images.get(self.alpine_ctnr.image).inspect()
changes = ['ENV=' + i for i in details.containerconfig['env']]
changes.append('CMD=/usr/bin/zsh')
changes.append('ENTRYPOINT=/bin/sh date')
changes.append('ENV=TEST=test_containers.TestContainers.test_commit')
changes.append('EXPOSE=80')
changes.append('EXPOSE=8888')
changes.append('LABEL=unittest=test_commit')
changes.append('USER=bozo:circus')
changes.append('VOLUME=/data')
changes.append('WORKDIR=/data/application')
id = self.alpine_ctnr.commit(
'alpine3', author='Bozo the clown', changes=changes, pause=True)
img = self.pclient.images.get(id)
self.assertIsNotNone(img)
details = img.inspect()
self.assertEqual(details.author, 'Bozo the clown')
self.assertListEqual(['/usr/bin/zsh'], details.containerconfig['cmd'])
self.assertListEqual(['/bin/sh date'],
details.containerconfig['entrypoint'])
self.assertIn('TEST=test_containers.TestContainers.test_commit',
details.containerconfig['env'])
self.assertTrue(
[e for e in details.containerconfig['env'] if 'PATH=' in e])
self.assertDictEqual({
'80': {},
'8888': {},
}, details.containerconfig['exposedports'])
self.assertDictEqual({'unittest': 'test_commit'}, details.labels)
self.assertEqual('bozo:circus', details.containerconfig['user'])
self.assertEqual({'/data': {}}, details.containerconfig['volumes'])
self.assertEqual('/data/application',
details.containerconfig['workingdir'])
def test_remove(self):
before = len(self.containers)
with self.assertRaises(podman.ErrorOccurred):
self.alpine_ctnr.remove()
self.assertEqual(
self.alpine_ctnr.id, self.alpine_ctnr.remove(force=True))
self.loadCache()
after = len(self.containers)
self.assertLess(after, before)
TestContainers.setUpClass()
def test_restart(self):
self.assertTrue(self.alpine_ctnr.running)
before = self.alpine_ctnr.runningfor
ctnr = self.alpine_ctnr.restart()
self.assertTrue(ctnr.running)
after = self.alpine_ctnr.runningfor
# TODO: restore check when restart zeros counter
# self.assertLess(after, before)
def test_rename(self):
with self.assertRaisesNotImplemented():
self.alpine_ctnr.rename('new_alpine')
def test_resize_tty(self):
with self.assertRaisesNotImplemented():
self.alpine_ctnr.resize_tty(132, 43)
def test_pause_unpause(self):
self.assertTrue(self.alpine_ctnr.running)
ctnr = self.alpine_ctnr.pause()
self.assertEqual(ctnr.status, 'paused')
ctnr = self.alpine_ctnr.unpause()
self.assertTrue(ctnr.running)
self.assertTrue(ctnr.status, 'running')
# creating cgoups can be flakey
@retry(podman.libs.errors.ErrorOccurred, tries=4, delay=2, print_=print)
def test_stats(self):
try:
self.assertTrue(self.alpine_ctnr.running)
actual = self.alpine_ctnr.stats()
self.assertEqual(self.alpine_ctnr.id, actual.id)
self.assertEqual(self.alpine_ctnr.names, actual.name)
except Exception:
info = Path('/proc/self/mountinfo')
with info.open() as fd:
print('{} {}'.format(self.alpine_ctnr.id, info))
print(fd.read())
def test_logs(self):
self.assertTrue(self.alpine_ctnr.running)
actual = list(self.alpine_ctnr.logs())
self.assertIsNotNone(actual)
if __name__ == '__main__':
unittest.main()
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