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#!/usr/bin/python3
"""A very quick and dirty script to test a package using the debian/test/control file in a throw away VM.
This script needs to run as root and installs a lot of packages arbitrarily. If
it breaks the installation it's run on, you get to keep both pieces.
Usage:
test_one_package_in_throwaway_vm.py zope.interface
(apt-get source zope.interface, unpack and test)
"""
import shutil
import tempfile
import os
import stat
import sys
import unittest
import logging
import subprocess
class Dependency(object):
def __init__(self, package):
self.package = package
class _Test(unittest.TestCase):
def __init__(self, tests_dir, name, restrictions=frozenset(), features=frozenset(), depends=(), parse_context=None):
unittest.TestCase.__init__(self, methodName='runTest')
self._name = name
self._restrictions = restrictions
self._features = features
self._depends = depends
self._tests_dir = tests_dir
if parse_context is None:
parse_context = {}
self._parse_context = parse_context
def assertDependencies(self):
"""Install dependencies/check if they are installed or error"""
for d in self._depends:
logging.info("Installing: %s", d.package)
subprocess.check_call(['apt-get', '--force-yes', '-y', 'install', d.package])
def runTest(self):
self.assertDependencies()
logging.info("RUNNING %s", self._name)
binary = os.path.join(self._tests_dir, self._name)
binary = os.path.abspath(binary)
subprocess.check_call(['/bin/chmod', 'a+x', binary])
tmpdir = tempfile.mkdtemp()
try:
env = {'TMPDIR': tmpdir}
env.update(os.environ) # ???
p = subprocess.Popen(['sudo', '-u', 'nobody', binary],
stdin=subprocess.PIPE,
stderr=subprocess.PIPE,
env=env)
stdout, stderr = p.communicate()
finally:
shutil.rmtree(tmpdir)
msg = ""
if stderr:
msg = msg + "Test Printed to stderr:\n\n%s\n" % stderr.decode('utf-8')
self.assertFalse(stderr, msg)
if p.returncode != 0:
logging.error(msg)
self.assertEquals(p.returncode, 0)
class Parser(object):
def __init__(self):
self.tests = []
def _add_test(self, stanza, filename, lineno):
pc = dict(filename=filename, lineno=lineno)
tests = stanza.pop('tests')
tests_dir = stanza.pop('tests_dir', 'debian/tests')
if 'depends' not in stanza:
stanza['depends'] = tuple(self._normalize_dep('@'))
for test in tests:
self.tests.append(_Test(tests_dir, test, parse_context=pc, **stanza))
def _normalize_dep(self, dep):
dep = dep.strip()
assert ' ' not in dep, dep
assert dep, dep
if dep != '@':
return [Dependency(dep)]
deps = []
data = open('debian/control', 'r', encoding='utf-8').read()
for line in data.splitlines():
if not line.startswith("Package:"):
continue
line = line[8:].strip()
deps.append(Dependency(line))
return deps
def parse(self):
filename = 'debian/tests/control'
data = open(filename, 'r').read()
stanza = {}
skipping = False
startline = 1
for lineno, line in enumerate(data.splitlines()):
if not line:
if skipping:
skipping = False
stanza = {}
startline = lineno + 1
continue
if stanza:
self._add_test(stanza, filename, startline)
stanza = {}
startline = lineno + 1
elif skipping:
continue
elif line.startswith("Tests:"):
line = line[6:].strip()
stanza['tests'] = frozenset(line.split())
elif line.startswith("Depends:"):
line = line[8:].strip()
deps = []
for d in line.split(','):
deps.extend(self._normalize_dep(d))
stanza['depends'] = tuple(deps)
elif line.startswith("Features:"):
line = line[9:].strip()
stanza['features'] = features= frozenset(line.split())
elif line.startswith("Restrictions:"):
line = line[13:].strip()
stanza['restrictions'] = restrictions = frozenset(line.split())
elif line.startswith("Tests-Directory:"):
line = line[16:].strip()
stanza['tests_dir'] = frozenset(line.split())
else:
logging.warn("Skipped stanza due to unknown field: %s: %s" % (lineno, line))
skipping = True
if stanza and not skipping:
# catch last parsed stanza
self._add_test(stanza, filename, startline)
if __name__ == '__main__':
logging.basicConfig(level=logging.INFO)
logging.info("Updating")
subprocess.check_call(['apt-get', 'install', 'sudo'])
subprocess.check_call(['apt-get', 'update'])
mytemp = tempfile.mkdtemp()
subprocess.check_call(['/bin/chmod', 'a+rx', mytemp])
os.chdir(mytemp)
logging.info("Getting and un-packing source")
subprocess.check_call(['apt-get', 'source', sys.argv[1]])
for d in os.listdir(mytemp):
sourcedir = os.path.join(mytemp, d)
if os.path.isdir(sourcedir):
break
else:
raise Exception("Could not find unpacked source in %s" % mytemp)
os.chdir(sourcedir)
logging.info("Running tests from %s" % sourcedir)
p = Parser()
p.parse()
suite = unittest.TestSuite(tests=p.tests)
runner = unittest.TextTestRunner()
result = runner.run(suite)
logging.info("Tests were run in %s" % sourcedir)
sys.exit(not result.wasSuccessful())
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