devscripts 2.16.2ubuntu3 / usr / bin / sadt

#!/usr/bin/python3
# encoding=UTF-8

# Copyright © 2012, 2013, 2014 Jakub Wilk <jwilk@debian.org>

# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
# AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
# OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
# PERFORMANCE OF THIS SOFTWARE.

'''
simple DEP-8 test runner
'''

import argparse
import errno
import gettext
import os
import queue as queuemod
import re
import shutil
import stat
import subprocess as ipc
import sys
import tempfile
import threading

import debian.deb822 as deb822


def chmod_x(path):
    '''
    chmod a+X <path>
    '''
    old_mode = stat.S_IMODE(os.stat(path).st_mode)
    new_mode = old_mode | ((old_mode & 0o444) >> 2)
    if old_mode != new_mode:
        os.chmod(path, new_mode)
    return old_mode


def annotate_output(child):
    queue = queuemod.Queue()

    def reader(fd, tag):
        buf = b''
        while True:
            assert b'\n' not in buf
            chunk = os.read(fd, 1024)
            if chunk == b'':
                break
            lines = (buf + chunk).split(b'\n')
            buf = lines.pop()
            for line in lines:
                queue.put((tag, line + b'\n'))
        if buf != b'':
            queue.put((tag, buf))
        queue.put(None)
    queue = queuemod.Queue()
    threads = []
    for pipe, tag in [(child.stdout, 'O'), (child.stderr, 'E')]:
        thread = threading.Thread(target=reader, args=(pipe.fileno(), tag))
        thread.start()
        threads += [thread]
    nthreads = len(threads)
    while nthreads > 0:
        item = queue.get()
        if item is None:
            nthreads -= 1
            continue
        yield item
    for thread in threads:
        thread.join()


class Skip(Exception):
    pass


class Fail(Exception):
    pass


class Progress(object):

    _hourglass = r'/-\|'

    def __init__(self):
        self._counter = 0
        if sys.stdout.isatty():
            self._back = '\b'
        else:
            self._back = ''

    def _write(self, s):
        sys.stdout.write(s)
        sys.stdout.flush()

    def ping(self):
        if not self._back:
            return
        hourglass = self._hourglass
        c = self._counter + 1
        self._write(self._back + hourglass[c % len(hourglass)])
        self._counter = c

    def start(self, name):
        pass

    def skip(self, reason):
        raise NotImplementedError

    def fail(self, reason):
        raise NotImplementedError

    def ok(self):
        raise NotImplementedError

    def close(self):
        pass


class DefaultProgress(Progress):

    def start(self, name):
        if self._back:
            self._write(' ')
        self.ping()

    def skip(self, reason):
        self._write(self._back + 'S')

    def fail(self, reason):
        self._write(self._back + 'F')

    def ok(self):
        self._write(self._back + '.')

    def close(self):
        self._write('\n')


class VerboseProgress(Progress):

    def start(self, name):
        self._write('{test} ... '.format(test=name) + (' ' if self._back else ''))
        self.ping()

    def skip(self, reason):
        self._write(self._back + 'SKIP ({reason})\n'.format(reason=reason))

    def fail(self, reason):
        self._write(self._back + 'FAIL ({reason})\n'.format(reason=reason))

    def ok(self):
        self._write(self._back + 'ok\n')


class TestGroup(object):

    def __init__(self):
        self.tests = []
        self.restrictions = frozenset()
        self.features = frozenset()
        self.depends = '@'
        self.tests_directory = 'debian/tests'
        self._check_depends_cache = None

    def __iter__(self):
        return iter(self.tests)

    def expand_depends(self, packages, build_depends):
        if '@' not in self.depends:
            return
        or_clauses = []
        # deb822 prints a warning on stderr: https://bugs.debian.org/712513
        # We don't want the user to see the warning, because the unusual
        # character in the relation is intentional.
        orig_sys_stderr = sys.stderr
        sys.stderr = open(os.devnull, 'wt', errors='ignore')
        try:
            parsed_depends = deb822.PkgRelation.parse_relations(self.depends)
        finally:
            try:
                sys.stderr.close()
            finally:
                sys.stderr = orig_sys_stderr
        for or_clause in parsed_depends:
            if len(or_clause) == 1 and or_clause[0]['name'] == '@builddeps@':
                or_clauses += build_depends
                or_clauses += deb822.PkgRelation.parse_relations('make')
                continue
            stripped_or_clause = [r for r in or_clause if r['name'] != '@']
            if len(stripped_or_clause) < len(or_clause):
                for package in packages:
                    or_clauses += [
                        stripped_or_clause +
                        [dict(name=package, version=None, arch=None)]
                    ]
            else:
                or_clauses += [or_clause]
        self.depends = deb822.PkgRelation.str(or_clauses)

    def check_depends(self):
        if self._check_depends_cache is not None:
            if isinstance(self._depends_cache, Exception):
                raise self._check_depends_cache
            return
        child = ipc.Popen(['dpkg-checkbuilddeps', '-d', self.depends], stderr=ipc.PIPE, env={})
        error = child.stderr.read().decode('ASCII')
        child.stderr.close()
        if child.wait() != 0:
            error = re.sub('^dpkg-checkbuilddeps: Unmet build dependencies', 'unmet dependencies',
                           error)
            error = error.rstrip()
            skip = Skip(error)
            self._depends_cache = skip
            raise skip
        else:
            self._depends_cache = True

    def check_restrictions(self, ignored_restrictions):
        restrictions = self.restrictions - frozenset(ignored_restrictions)

        class options:
            rw_build_tree_needed = False
            allow_stderr = False
        for r in restrictions:
            if r == 'rw-build-tree':
                options.rw_build_tree_needed = True
            elif r == 'needs-root':
                if os.getuid() != 0:
                    raise Skip('this test needs root privileges')
            elif r == 'breaks-testbed':
                raise Skip('breaks-testbed restriction is not implemented; use adt-run')
            elif r == 'build-needed':
                raise Skip('source tree not built')
            elif r == 'allow-stderr':
                options.allow_stderr = True
            else:
                raise Skip('unknown restriction: {restr}'.format(restr=r))
        return options

    def check(self, ignored_restrictions=()):
        options = self.check_restrictions(ignored_restrictions)
        self.check_depends()
        return options

    def run(self, test, progress, ignored_restrictions=(), rw_build_tree=None,
            built_source_tree=None):
        progress.start(test)
        ignored_restrictions = set(ignored_restrictions)
        if rw_build_tree:
            ignored_restrictions.add('rw-build-tree')
        if built_source_tree:
            ignored_restrictions.add('build-needed')
        try:
            options = self.check(ignored_restrictions)
        except Skip as exc:
            progress.skip(str(exc))
            raise
        path = os.path.join(self.tests_directory, test)
        original_mode = None
        if rw_build_tree:
            cwd = os.getcwd()
            os.chdir(rw_build_tree)
            chmod_x(path)
        else:
            cwd = None
            if not os.access(path, os.X_OK):
                try:
                    original_mode = chmod_x(path)
                except OSError as exc:
                    progress.skip('{path} could not be made executable: {exc}'
                                  .format(path=path, exc=exc))
                    raise Skip
        try:
            self._run(test, progress, allow_stderr=options.allow_stderr)
        finally:
            if original_mode is not None:
                os.chmod(path, original_mode)
            if cwd is not None:
                os.chdir(cwd)

    def _run(self, test, progress, allow_stderr=False):
        path = os.path.join(self.tests_directory, test)
        tmpdir1 = tempfile.mkdtemp(prefix='sadt.')
        tmpdir2 = tempfile.mkdtemp(prefix='sadt.')
        environ = dict(os.environ)
        environ['ADTTMP'] = tmpdir1
        environ['TMPDIR'] = tmpdir2  # only for compatibility with old DEP-8 spec.
        child = ipc.Popen([path], stdout=ipc.PIPE, stderr=ipc.PIPE, env=environ)
        output = []
        stderr = False
        for tag, line in annotate_output(child):
            progress.ping()
            if tag == 'E':
                stderr = True
            output += ['{tag}: {line}'.format(
                tag=tag,
                line=line.decode(sys.stdout.encoding, 'replace'),
            )]
        for fp in child.stdout, child.stderr:
            fp.close()
        rc = child.wait()
        shutil.rmtree(tmpdir1)
        shutil.rmtree(tmpdir2)
        if rc == 0:
            if stderr and not allow_stderr:
                rc = -1
                fail_reason = 'stderr non-empty'
                progress.fail(fail_reason)
            else:
                progress.ok()
        else:
            fail_reason = 'exit code: {rc}'.format(rc=rc)
            progress.fail(fail_reason)
        if rc != 0:
            raise Fail(fail_reason, ''.join(output))

    def add_tests(self, tests):
        tests = tests.split()
        self.tests = frozenset(tests)

    def add_restrictions(self, restrictions):
        restrictions = restrictions.split()
        self.restrictions = frozenset(restrictions)

    def add_features(self, features):
        features = features.split()
        self.features = frozenset(features)

    def add_depends(self, depends):
        self.depends = depends

    def add_tests_directory(self, path):
        self.tests_directory = path


def copy_build_tree():
    rw_build_tree = tempfile.mkdtemp(prefix='sadt-rwbt.')
    print('sadt: info: copying build tree to {tree}'.format(tree=rw_build_tree), file=sys.stderr)
    ipc.check_call(['cp', '-a', '.', rw_build_tree])
    return rw_build_tree


def main():
    for description in __doc__.splitlines():
        if description:
            break
    parser = argparse.ArgumentParser(description=description)
    parser.add_argument('-v', '--verbose', action='store_true', help='verbose output')
    parser.add_argument('-b', '--built-source-tree', action='store_true',
                        help='assume built source tree')
    parser.add_argument('--ignore-restrictions', metavar='<restr>[,<restr>...]',
                        help='ignore specified restrictions', default='')
    parser.add_argument('tests', metavar='<test-name>', nargs='*', help='tests to run')
    options = parser.parse_args()
    options.tests = frozenset(options.tests)
    options.ignore_restrictions = frozenset(options.ignore_restrictions.split(','))
    binary_packages = set()
    build_depends = []
    try:
        file = open('debian/control', encoding='UTF-8')
    except IOError as exc:
        if exc.errno == errno.ENOENT:
            print('sadt: error: cannot find debian/control', file=sys.stderr)
            sys.exit(1)
        raise
    with file:
        for n, para in enumerate(deb822.Packages.iter_paragraphs(file)):
            if n == 0:
                para['Source']
                for field in 'Build-Depends', 'Build-Depends-Indep':
                    try:
                        build_depends += deb822.PkgRelation.parse_relations(para[field])
                    except KeyError:
                        continue
            else:
                binary_packages.add(para['Package'])
    test_groups = []
    try:
        file = open('debian/tests/control', encoding='UTF-8')
    except IOError as exc:
        if exc.errno == errno.ENOENT:
            print('sadt: error: cannot find debian/tests/control', file=sys.stderr)
            sys.exit(1)
        raise
    with file:
        for para in deb822.Packages.iter_paragraphs(file):
            group = TestGroup()
            for key, value in para.items():
                lkey = key.lower().replace('-', '_')
                try:
                    method = getattr(group, 'add_' + lkey)
                except AttributeError:
                    print('sadt: warning: unknown field {field}, skipping the whole paragraph'
                          .format(field=key), file=sys.stderr)
                    group = None
                    break
                method(value)
            if group is not None:
                group.expand_depends(binary_packages, build_depends)
                test_groups += [group]
    failures = []
    n_skip = n_ok = 0
    progress = VerboseProgress() if options.verbose else DefaultProgress()
    rw_build_tree = None
    try:
        for group in test_groups:
            for name in group:
                if options.tests and name not in options.tests:
                    continue
                try:
                    if rw_build_tree is None:
                        try:
                            group_options = group.check()
                        except Skip:
                            pass
                        else:
                            if group_options.rw_build_tree_needed:
                                rw_build_tree = copy_build_tree()
                                assert rw_build_tree is not None
                    group.run(
                        name,
                        progress=progress,
                        ignored_restrictions=options.ignore_restrictions,
                        rw_build_tree=rw_build_tree,
                        built_source_tree=options.built_source_tree
                    )
                except Skip:
                    n_skip += 1
                except Fail as exc:
                    failures += [(name, exc)]
                else:
                    n_ok += 1
    finally:
        progress.close()
    n_fail = len(failures)
    n_test = n_fail + n_skip + n_ok
    separator1 = '-' * 70
    separator2 = '=' * 70
    if failures:
        for name, exception in failures:
            print(separator2)
            print('FAIL: {test}'.format(test=name))
            print(separator1)
            print(exception.args[1])
    print(separator1)
    print(gettext.ngettext('Ran {n} test', 'Ran {n} tests', n_test).format(n=n_test))
    print()
    extra_message = []
    if n_skip > 0:
        extra_message += ['skipped={n}'.format(n=n_skip)]
    if n_fail > 0:
        extra_message += ['failures={n}'.format(n=n_fail)]
    if extra_message:
        extra_message = ' ({msg})'.format(msg=', '.join(extra_message))
    else:
        extra_message = ''
    message = ('OK' if n_fail == 0 else 'FAILED') + extra_message
    print(message)
    if rw_build_tree is not None:
        shutil.rmtree(rw_build_tree)
    sys.exit(n_fail > 0)

if __name__ == '__main__':
    main()

# vim:ts=4 sw=4 et