summaryrefslogtreecommitdiffstats
path: root/scripts/sadt
blob: 19208c33faa62a52e9d49080489e39ab5dafff1b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
#!/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 os
import queue as queuemod
import re
import shutil
import stat
import subprocess as ipc
import sys
import tempfile
import threading
import warnings
from debian import deb822


def parse_relations(field):
    '''
    wrap debian.deb822.PkgRelation.parse_relations() to suppress the
    UserWarning about the inability to parse something.
    See https://bugs.debian.org/712513
    '''
    warnings.simplefilter('ignore')
    parsed = deb822.PkgRelation.parse_relations(field)
    warnings.resetwarnings()
    return parsed


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 Flaky(Exception):
    pass


class Fail(Exception):
    pass


class Progress:

    @staticmethod
    def _write(s):
        sys.stdout.write(s)
        sys.stdout.flush()

    def start(self, name):
        pass

    def output(self, line):
        pass

    def skip(self, name, reason):
        raise NotImplementedError

    def fail(self, name, reason):
        raise NotImplementedError

    def ok(self, name):
        raise NotImplementedError

    def close(self):
        pass


class DefaultProgress(Progress):

    _hourglass = r'/-\|'

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

    def _reset(self):
        if self._output:
            self._write(self._back)

    def start(self, name):
        self._output = False

    def output(self, line):
        if not self._back:
            return
        hourglass = self._hourglass
        c = self._counter + 1
        self._reset()
        self._write(hourglass[c % len(hourglass)])
        self._counter = c
        self._output = True

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

    def fail(self, name, reason):
        self._reset()
        self._write('F')

    def ok(self, name):
        self._reset()
        self._write('.')

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


class VerboseProgress(Progress):

    def _separator(self):
        self._write('-' * 70 + '\n')

    def start(self, name):
        self._separator()
        self._write('{test}\n'.format(test=name))
        self._separator()

    def output(self, line):
        self._write(line)

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

    def fail(self, name, reason):
        self._separator()
        self._write('{test}: FAIL ({reason})\n'.format(
            test=name, reason=reason))
        self._write('\n')

    def ok(self, name):
        self._separator()
        self._write('{test}: PASS\n'.format(test=name))
        self._write('\n')


class TestCommand:

    def __init__(self, group, command):
        self.group = group
        self.command = command

    def __str__(self):
        return self.command

    @property
    def name(self):
        return str(self)

    def get_command(self):
        return ['sh', '-c', self.command]

    def prepare(self, progress, rw_build_tree):
        pass

    def cleanup(self):
        pass

    def run(self, progress, options):   # pylint: disable=too-many-locals
        command = self.get_command()
        tmpdir1 = tempfile.mkdtemp(prefix='sadt.')
        tmpdir2 = tempfile.mkdtemp(prefix='sadt.')
        environ = dict(os.environ)
        environ['AUTOPKGTEST_TMP'] = tmpdir1
        # only for compatibility with old DEP-8 spec.
        environ['ADTTMP'] = tmpdir2
        child = ipc.Popen(command, stdout=ipc.PIPE,
                          stderr=ipc.PIPE, env=environ)
        output = []
        stderr = False
        for tag, line in annotate_output(child):
            if tag == 'E':
                stderr = True
            this_line = '{tag}: {line}'.format(
                tag=tag,
                line=line.decode(sys.stdout.encoding, 'replace'),
            )
            progress.output(this_line)
            output.append(this_line)
        for fp in child.stdout, child.stderr:
            fp.close()
        rc = child.wait()
        shutil.rmtree(tmpdir1)
        shutil.rmtree(tmpdir2)

        if rc == 77 and options.skippable:
            reason = 'exit status 77 and marked as skippable'
            progress.skip(self, reason)
            raise Skip(self, reason, ''.join(output))

        fail_reason = None

        if rc == 0:
            if stderr and not options.allow_stderr:
                rc = -1
                fail_reason = 'stderr non-empty'
        else:
            fail_reason = 'exit code: {rc}'.format(rc=rc)

        if rc != 0:
            if options.flaky:
                progress.skip(self, fail_reason)
                raise Flaky(self, fail_reason, ''.join(output))

            progress.fail(self, fail_reason)
            raise Fail(self, fail_reason, ''.join(output))

        progress.ok(self)


class Test(TestCommand):

    def __init__(self, group, testname):
        self.testname = testname
        self.original_mode = None
        self.cwd = None
        super().__init__(group, testname)

    @property
    def path(self):
        return os.path.join(self.group.tests_directory, self.testname)

    def __str__(self):
        return self.testname

    def get_command(self):
        return [self.path]

    def prepare(self, progress, rw_build_tree):
        if rw_build_tree:
            self.cwd = os.getcwd()
            os.chdir(rw_build_tree)
            chmod_x(self.path)
        else:
            if not os.access(self.path, os.X_OK):
                try:
                    self.original_mode = chmod_x(self.path)
                except OSError as exc:
                    progress.skip(self.testname, '{path} could not be made executable: {exc}'
                                  .format(path=self.path, exc=exc))
                    raise Skip from exc

    def cleanup(self):
        if self.original_mode is not None:
            os.chmod(self.path, self.original_mode)
        if self.cwd is not None:
            os.chdir(self.cwd)


class TestOptions:  # pylint: disable=too-few-public-methods
    def __init__(self):
        self.allow_stderr = False
        self.flaky = False
        self.rw_build_tree_needed = False
        self.skippable = False


class TestGroup:
    def __init__(self):
        self.tests = []
        self.restrictions = frozenset()
        self.features = frozenset()
        self.depends = '@'
        self.tests_directory = 'debian/tests'
        self._depends_checked = False
        self._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 = []
        parsed_depends = parse_relations(self.depends)
        for or_clause in parsed_depends:
            if len(or_clause) == 1 and or_clause[0]['name'] == '@builddeps@':
                or_clauses += build_depends
                or_clauses += 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._depends_checked:
            if isinstance(self._depends_cache, Exception):
                raise self._depends_cache  # fpos, pylint: disable=raising-bad-type
            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
        self._depends_checked = True

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

        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
            elif r == 'flaky':
                options.flaky = True
            elif r == 'skippable':
                options.skippable = 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):
        ignored_restrictions = set(ignored_restrictions)
        if rw_build_tree:
            ignored_restrictions.add('rw-build-tree')
        if built_source_tree:
            ignored_restrictions.add('build-needed')
        ignored_restrictions.add('needs-recommends')
        ignored_restrictions.add('superficial')
        try:
            options = self.check(ignored_restrictions)
        except Skip as exc:
            progress.skip(test, str(exc))
            raise
        test.prepare(progress, rw_build_tree)
        try:
            progress.start(test)
            test.run(progress, options)
        finally:
            test.cleanup()

    def add_tests(self, tests):
        tests = [Test(self, t) for t in re.split(r'\s*,?\s+', tests)]
        self.tests = frozenset(tests)

    def add_test_command(self, test_command):
        self.tests = frozenset([TestCommand(self, test_command)])

    def add_restrictions(self, restrictions):
        restrictions = re.split(r'\s*,?\s+', restrictions)
        self.restrictions = frozenset(restrictions)

    def add_features(self, features):
        features = re.split(r'\s*,?\s+', features)
        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():
    # TODO: refactor main function
    # pylint: disable=too-many-branches,too-many-statements,too-many-locals,too-many-nested-blocks
    parser = argparse.ArgumentParser(description=__doc__.strip())
    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:
                # FIXME statement with no effect
                # para['Source']
                for field in (
                        'Build-Depends', 'Build-Depends-Indep',
                        'Build-Depends-Arch'):
                    try:
                        build_depends += parse_relations(para[field])
                    except KeyError:
                        continue
            else:
                if para.get("Package-Type") == "udeb":
                    # udebs can't be tested
                    continue
                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 = []
    flakes = []
    n_skip = n_ok = 0
    progress = VerboseProgress() if options.verbose else DefaultProgress()
    rw_build_tree = None
    try:
        for group in test_groups:
            for test in group:
                if options.tests and test.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(
                        test,
                        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 += [(test, exc)]
                except Flaky as exc:
                    flakes += [(test, exc)]
                else:
                    n_ok += 1
    finally:
        progress.close()
    n_fail = len(failures)
    n_flake = len(flakes)
    n_test = n_fail + n_flake + n_skip + n_ok
    if failures:
        for name, exception in failures:
            print('=' * 70)
            print('FAIL: {test} ({reason})'.format(
                test=name, reason=exception.args[1]))
    if flakes:
        for name, exception in flakes:
            print('=' * 70)
            print('FLAKY: {test} ({reason})'.format(
                test=name, reason=exception.args[1]))
    print()
    fmt_message = ['tests={n}'.format(n=n_test)]
    if n_skip > 0:
        fmt_message += ['skipped={n}'.format(n=n_skip)]
    if n_fail > 0:
        fmt_message += ['failures={n}'.format(n=n_fail)]
    if n_flake > 0:
        fmt_message += ['flaky={n}'.format(n=n_flake)]
    if fmt_message:
        extra_message = ' ({msg})'.format(msg=', '.join(fmt_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