lorax/test/composertest.py
Martin Pitt b2f79ef4a3 test: Put VM image overlay into /var/tmp
At least in our CI, the default place to store VM runtime overlays
(testvm.get_temp_dir()) points to a tmpfs file, so that tests can put VM
overlays into RAM and are not affected by slow I/O. But that doesn't
work for composer, as it tends to produce huge overlays due to real-life
OS composed trees.

Use /var/tmp/ instead, which is meant for large files.

Also simplify the VirtMachine invocation -- if `identity_file` is None,
that's fine -- it's the default value of that argument anyway.

Cherry-picked from master commit 9b8e0e2335
2020-06-02 21:32:12 +02:00

166 lines
5.7 KiB
Python

#!/usr/bin/python3
import argparse
import os
import subprocess
import sys
import unittest
# import Cockpit's machinery for test VMs and its browser test API
sys.path.append(os.path.join(os.path.dirname(__file__), "../bots/machine"))
import testvm # pylint: disable=import-error
def print_exception(etype, value, tb):
import traceback
# only include relevant lines
limit = 0
while tb and '__unittest' in tb.tb_frame.f_globals:
limit += 1
tb = tb.tb_next
traceback.print_exception(etype, value, tb, limit=limit)
class VirtMachineTestCase(unittest.TestCase):
sit = False
network = None
machine = None
ssh_command = None
def setUpTestMachine(self, image, identity_file=None):
self.network = testvm.VirtNetwork(0)
# default overlay directory is not big enough to hold the large composed trees; thus put overlay into /var/tmp/
self.machine = testvm.VirtMachine(image, networking=self.network.host(),
cpus=2, memory_mb=2048,
overlay_dir="/var/tmp",
identity_file=identity_file)
print("Starting virtual machine '{}'".format(image))
self.machine.start()
self.machine.wait_boot()
# run a command to force starting the SSH master
self.machine.execute("uptime")
self.ssh_command = ["ssh", "-o", "ControlPath=" + self.machine.ssh_master,
"-p", self.machine.ssh_port,
self.machine.ssh_user + "@" + self.machine.ssh_address]
print("Machine is up. Connect to it via:")
print(" ".join(self.ssh_command))
print()
def tearDownTestMachine(self):
if os.environ.get('TEST_ATTACHMENTS'):
self.machine.download_dir('/var/log/tests', os.environ.get('TEST_ATTACHMENTS'))
# Peek into internal data structure, because there's no way to get the
# TestResult at this point. `errors` is a list of tuples (method, error)
errors = list(e[1] for e in self._outcome.errors if e[1])
if errors and self.sit:
for e in errors:
print_exception(*e)
print()
print(" ".join(self.ssh_command))
input("Press RETURN to continue...")
self.machine.stop()
def execute(self, command, **args):
"""Execute a command on the test machine.
**args and return value are the same as those for subprocess.run().
"""
return subprocess.run(self.ssh_command + command, **args)
class ComposerTestCase(VirtMachineTestCase):
def setUp(self):
self.setUpTestMachine(testvm.DEFAULT_IMAGE)
# Upload the contents of the ./tests/ directory to the machine (it must have beakerlib already installed)
self.machine.upload(["../tests"], "/")
print("Waiting for lorax-composer to become ready...")
curl_command = ["curl", "--max-time", "360",
"--silent",
"--unix-socket", "/run/weldr/api.socket",
"http://localhost/api/status"]
r = subprocess.run(self.ssh_command + curl_command, stdout=subprocess.DEVNULL)
self.assertEqual(r.returncode, 0)
def tearDown(self):
self.tearDownVirt()
def tearDownVirt(self, virt_dir=None, local_dir=None):
if os.environ.get('TEST_ATTACHMENTS'):
self.machine.download_dir('/var/log/tests', os.environ.get('TEST_ATTACHMENTS'))
if virt_dir and local_dir:
self.machine.download_dir(virt_dir, local_dir)
self.tearDownTestMachine()
return local_dir
def runCliTest(self, script):
extra_env = []
if self.sit:
extra_env.append("COMPOSER_TEST_FAIL_FAST=1")
r = self.execute(["CLI=/usr/bin/composer-cli",
"TEST=" + self.id(),
"PACKAGE=composer-cli",
*extra_env,
"/tests/test_cli.sh", script])
self.assertEqual(r.returncode, 0)
def runImageTest(self, script):
extra_env = []
if self.sit:
extra_env.append("COMPOSER_TEST_FAIL_FAST=1")
r = self.execute(["TEST=" + self.id(),
*extra_env,
"/tests/test_image.sh", script])
self.assertEqual(r.returncode, 0)
def print_tests(tests):
for test in tests:
if isinstance(test, unittest.TestSuite):
print_tests(test)
elif isinstance(test, unittest.loader._FailedTest):
name = test.id().replace("unittest.loader._FailedTest.", "")
print(f"Error: '{name}' does not match a test", file=sys.stderr)
else:
print(test.id().replace("__main__.", ""))
def main():
parser = argparse.ArgumentParser()
parser.add_argument("tests", nargs="*", help="List of tests modules, classes, and methods")
parser.add_argument("-l", "--list", action="store_true", help="Print the list of tests that would be executed")
parser.add_argument("-s", "--sit", action="store_true", help="Halt test execution (but keep VM running) when a test fails")
args = parser.parse_args()
ComposerTestCase.sit = args.sit
module = __import__("__main__")
if args.tests:
tests = unittest.defaultTestLoader.loadTestsFromNames(args.tests, module)
else:
tests = unittest.defaultTestLoader.loadTestsFromModule(module)
if args.list:
print_tests(tests)
return 0
runner = unittest.TextTestRunner(verbosity=2, failfast=args.sit)
result = runner.run(tests)
sys.exit(not result.wasSuccessful())