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import subprocess
import sys
import time
import unittest
from docker import DockerClient, errors
from test.python.docker import Podman, common, constant
class TestContainers(unittest.TestCase):
podman = None # initialized podman configuration for tests
service = None # podman service instance
topContainerId = ""
def setUp(self):
super().setUp()
self.client = DockerClient(base_url="tcp://127.0.0.1:8080", timeout=15)
TestContainers.podman.restore_image_from_cache(self.client)
TestContainers.topContainerId = common.run_top_container(self.client)
self.assertIsNotNone(TestContainers.topContainerId)
def tearDown(self):
common.remove_all_containers(self.client)
common.remove_all_images(self.client)
self.client.close()
return super().tearDown()
@classmethod
def setUpClass(cls):
super().setUpClass()
TestContainers.podman = Podman()
TestContainers.service = TestContainers.podman.open(
"system", "service", "tcp:127.0.0.1:8080", "--time=0"
)
# give the service some time to be ready...
time.sleep(2)
rc = TestContainers.service.poll()
if rc is not None:
raise subprocess.CalledProcessError(rc, "podman system service")
@classmethod
def tearDownClass(cls):
TestContainers.service.terminate()
stdout, stderr = TestContainers.service.communicate(timeout=0.5)
if stdout:
sys.stdout.write("\nContainers Service Stdout:\n" + stdout.decode("utf-8"))
if stderr:
sys.stderr.write("\nContainers Service Stderr:\n" + stderr.decode("utf-8"))
TestContainers.podman.tear_down()
return super().tearDownClass()
def test_create_container(self):
# Run a container with detach mode
self.client.containers.create(image="alpine", detach=True)
self.assertEqual(len(self.client.containers.list(all=True)), 2)
def test_create_network(self):
net = self.client.networks.create("testNetwork", driver="bridge")
ctnr = self.client.containers.create(image="alpine", detach=True)
# TODO fix when ready
# This test will not work until all connect|disconnect
# code is fixed.
# net.connect(ctnr)
# nets = self.client.networks.list(greedy=True)
# self.assertGreaterEqual(len(nets), 1)
# TODO fix endpoint to include containers
# for n in nets:
# if n.id == "testNetwork":
# self.assertEqual(ctnr.id, n.containers)
# self.assertTrue(False, "testNetwork not found")
def test_start_container(self):
# Podman docs says it should give a 304 but returns with no response
# # Start a already started container should return 304
# response = self.client.api.start(container=TestContainers.topContainerId)
# self.assertEqual(error.exception.response.status_code, 304)
# Create a new container and validate the count
self.client.containers.create(image=constant.ALPINE, name="container2")
containers = self.client.containers.list(all=True)
self.assertEqual(len(containers), 2)
def test_stop_container(self):
top = self.client.containers.get(TestContainers.topContainerId)
self.assertEqual(top.status, "running")
# Stop a running container and validate the state
top.stop()
top.reload()
self.assertIn(top.status, ("stopped", "exited"))
def test_restart_container(self):
# Validate the container state
top = self.client.containers.get(TestContainers.topContainerId)
top.stop()
top.reload()
self.assertIn(top.status, ("stopped", "exited"))
# restart a running container and validate the state
top.restart()
top.reload()
self.assertEqual(top.status, "running")
def test_remove_container(self):
# Remove container by ID with force
top = self.client.containers.get(TestContainers.topContainerId)
top.remove(force=True)
self.assertEqual(len(self.client.containers.list()), 0)
def test_remove_container_without_force(self):
# Validate current container count
self.assertTrue(len(self.client.containers.list()), 1)
# Remove running container should throw error
top = self.client.containers.get(TestContainers.topContainerId)
with self.assertRaises(errors.APIError) as error:
top.remove()
self.assertEqual(error.exception.response.status_code, 500)
# Remove container by ID without force
top.stop()
top.remove()
self.assertEqual(len(self.client.containers.list()), 0)
def test_pause_container(self):
# Validate the container state
top = self.client.containers.get(TestContainers.topContainerId)
self.assertEqual(top.status, "running")
# Pause a running container and validate the state
top.pause()
top.reload()
self.assertEqual(top.status, "paused")
def test_pause_stopped_container(self):
# Stop the container
top = self.client.containers.get(TestContainers.topContainerId)
top.stop()
# Pause exited container should throw error
with self.assertRaises(errors.APIError) as error:
top.pause()
self.assertEqual(error.exception.response.status_code, 500)
def test_unpause_container(self):
top = self.client.containers.get(TestContainers.topContainerId)
# Validate the container state
top.pause()
top.reload()
self.assertEqual(top.status, "paused")
# Pause a running container and validate the state
top.unpause()
top.reload()
self.assertEqual(top.status, "running")
def test_list_container(self):
# Add container and validate the count
self.client.containers.create(image="alpine", detach=True)
containers = self.client.containers.list(all=True)
self.assertEqual(len(containers), 2)
def test_filters(self):
self.skipTest("TODO Endpoint does not yet support filters")
# List container with filter by id
filters = {"id": TestContainers.topContainerId}
ctnrs = self.client.containers.list(all=True, filters=filters)
self.assertEqual(len(ctnrs), 1)
# List container with filter by name
filters = {"name": "top"}
ctnrs = self.client.containers.list(all=True, filters=filters)
self.assertEqual(len(ctnrs), 1)
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