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import collections
import os
import subprocess
import sys
import time
import unittest
from docker import DockerClient, errors
from test.python.docker import Podman, common, constant
class TestImages(unittest.TestCase):
podman = None # initialized podman configuration for tests
service = None # podman service instance
def setUp(self):
super().setUp()
self.client = DockerClient(base_url="tcp://127.0.0.1:8080", timeout=15)
TestImages.podman.restore_image_from_cache(self.client)
def tearDown(self):
common.remove_all_images(self.client)
self.client.close()
return super().tearDown()
@classmethod
def setUpClass(cls):
super().setUpClass()
TestImages.podman = Podman()
TestImages.service = TestImages.podman.open(
"system", "service", "tcp:127.0.0.1:8080", "--time=0"
)
# give the service some time to be ready...
time.sleep(2)
returncode = TestImages.service.poll()
if returncode is not None:
raise subprocess.CalledProcessError(returncode, "podman system service")
@classmethod
def tearDownClass(cls):
TestImages.service.terminate()
stdout, stderr = TestImages.service.communicate(timeout=0.5)
if stdout:
sys.stdout.write("\nImages Service Stdout:\n" + stdout.decode("utf-8"))
if stderr:
sys.stderr.write("\nImAges Service Stderr:\n" + stderr.decode("utf-8"))
TestImages.podman.tear_down()
return super().tearDownClass()
def test_tag_valid_image(self):
"""Validates if the image is tagged successfully"""
alpine = self.client.images.get(constant.ALPINE)
self.assertTrue(alpine.tag("demo", constant.ALPINE_SHORTNAME))
alpine = self.client.images.get(constant.ALPINE)
for t in alpine.tags:
self.assertIn("alpine", t)
# @unittest.skip("doesn't work now")
def test_retag_valid_image(self):
"""Validates if name updates when the image is retagged"""
alpine = self.client.images.get(constant.ALPINE)
self.assertTrue(alpine.tag("demo", "rename"))
alpine = self.client.images.get(constant.ALPINE)
self.assertNotIn("demo:test", alpine.tags)
def test_list_images(self):
"""List images"""
self.assertEqual(len(self.client.images.list()), 1)
# Add more images
self.client.images.pull(constant.BB)
self.assertEqual(len(self.client.images.list()), 2)
# List images with filter
self.assertEqual(len(self.client.images.list(filters={"reference": "alpine"})), 1)
def test_search_image(self):
"""Search for image"""
for r in self.client.images.search("alpine"):
self.assertIn("alpine", r["Name"])
def test_search_bogus_image(self):
"""Search for bogus image should throw exception"""
try:
r = self.client.images.search("bogus/bogus")
except:
return
self.assertTrue(len(r)==0)
def test_remove_image(self):
"""Remove image"""
# Check for error with wrong image name
with self.assertRaises(errors.NotFound):
self.client.images.remove("dummy")
self.assertEqual(len(self.client.images.list()), 1)
self.client.images.remove(constant.ALPINE)
self.assertEqual(len(self.client.images.list()), 0)
def test_image_history(self):
"""Image history"""
img = self.client.images.get(constant.ALPINE)
history = img.history()
image_id = img.id[7:] if img.id.startswith("sha256:") else img.id
found = False
for change in history:
found |= image_id in change.values()
self.assertTrue(found, f"image id {image_id} not found in history")
def test_get_image_exists_not(self):
"""Negative test for get image"""
with self.assertRaises(errors.NotFound):
response = self.client.images.get("image_does_not_exists")
collections.deque(response)
def test_save_image(self):
"""Export Image"""
image = self.client.images.pull(constant.BB)
file = os.path.join(TestImages.podman.image_cache, "busybox.tar")
with open(file, mode="wb") as tarball:
for frame in image.save(named=True):
tarball.write(frame)
sz = os.path.getsize(file)
self.assertGreater(sz, 0)
def test_load_image(self):
"""Import|Load Image"""
self.assertEqual(len(self.client.images.list()), 1)
image = self.client.images.pull(constant.BB)
file = os.path.join(TestImages.podman.image_cache, "busybox.tar")
with open(file, mode="wb") as tarball:
for frame in image.save():
tarball.write(frame)
with open(file, mode="rb") as saved:
_ = self.client.images.load(saved)
self.assertEqual(len(self.client.images.list()), 2)
if __name__ == "__main__":
# Setup temporary space
unittest.main()
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