summaryrefslogtreecommitdiffstats
path: root/tests/test_build_linkcheck.py
blob: 38a0bd1eeb1eb7eaa0363fe5534176828b306054 (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
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
"""Test the build process with manpage builder with the test root."""

from __future__ import annotations

import http.server
import json
import re
import sys
import textwrap
import time
import wsgiref.handlers
from base64 import b64encode
from os import path
from queue import Queue
from unittest import mock

import pytest
from urllib3.poolmanager import PoolManager

import sphinx.util.http_date
from sphinx.builders.linkcheck import (
    CheckRequest,
    Hyperlink,
    HyperlinkAvailabilityCheckWorker,
    RateLimit,
)
from sphinx.testing.util import strip_escseq
from sphinx.util import requests
from sphinx.util.console import strip_colors

from .utils import CERT_FILE, http_server, https_server

ts_re = re.compile(r".*\[(?P<ts>.*)\].*")
SPHINX_DOCS_INDEX = path.abspath(path.join(__file__, "..", "roots", "test-linkcheck", "sphinx-docs-index.html"))


class DefaultsHandler(http.server.BaseHTTPRequestHandler):
    protocol_version = "HTTP/1.1"

    def do_HEAD(self):
        if self.path[1:].rstrip() in {"", "anchor.html"}:
            self.send_response(200, "OK")
            self.send_header("Content-Length", "0")
            self.end_headers()
        else:
            self.send_response(404, "Not Found")
            self.send_header("Content-Length", "0")
            self.end_headers()

    def do_GET(self):
        if self.path[1:].rstrip() == "":
            content = b"ok\n\n"
        elif self.path[1:].rstrip() == "anchor.html":
            doc = '<!DOCTYPE html><html><body><a id="found"></a></body></html>'
            content = doc.encode("utf-8")
        else:
            content = b""

        if content:
            self.send_response(200, "OK")
            self.send_header("Content-Length", str(len(content)))
            self.end_headers()
            self.wfile.write(content)
        else:
            self.send_response(404, "Not Found")
            self.send_header("Content-Length", "0")
            self.end_headers()


class ConnectionMeasurement:
    """Measure the number of distinct host connections created during linkchecking"""

    def __init__(self):
        self.connections = set()
        self.urllib3_connection_from_url = PoolManager.connection_from_url
        self.patcher = mock.patch.object(
            target=PoolManager,
            attribute='connection_from_url',
            new=self._collect_connections(),
        )

    def _collect_connections(self):
        def connection_collector(obj, url):
            connection = self.urllib3_connection_from_url(obj, url)
            self.connections.add(connection)
            return connection
        return connection_collector

    def __enter__(self):
        self.patcher.start()
        return self

    def __exit__(self, *args, **kwargs):
        for connection in self.connections:
            connection.close()
        self.patcher.stop()

    @property
    def connection_count(self):
        return len(self.connections)


@pytest.mark.sphinx('linkcheck', testroot='linkcheck', freshenv=True)
def test_defaults(app):
    with http_server(DefaultsHandler):
        with ConnectionMeasurement() as m:
            app.build()
        assert m.connection_count <= 5

    # Text output
    assert (app.outdir / 'output.txt').exists()
    content = (app.outdir / 'output.txt').read_text(encoding='utf8')

    # looking for '#top' and '#does-not-exist' not found should fail
    assert "Anchor 'top' not found" in content
    assert "Anchor 'does-not-exist' not found" in content
    # images should fail
    assert "Not Found for url: http://localhost:7777/image.png" in content
    assert "Not Found for url: http://localhost:7777/image2.png" in content
    # looking for local file should fail
    assert "[broken] path/to/notfound" in content
    assert len(content.splitlines()) == 5

    # JSON output
    assert (app.outdir / 'output.json').exists()
    content = (app.outdir / 'output.json').read_text(encoding='utf8')

    rows = [json.loads(x) for x in content.splitlines()]
    row = rows[0]
    for attr in ("filename", "lineno", "status", "code", "uri", "info"):
        assert attr in row

    assert len(content.splitlines()) == 10
    assert len(rows) == 10
    # the output order of the rows is not stable
    # due to possible variance in network latency
    rowsby = {row["uri"]: row for row in rows}
    assert rowsby["http://localhost:7777#!bar"] == {
        'filename': 'links.rst',
        'lineno': 5,
        'status': 'working',
        'code': 0,
        'uri': 'http://localhost:7777#!bar',
        'info': '',
    }
    assert rowsby['http://localhost:7777/image2.png'] == {
        'filename': 'links.rst',
        'lineno': 13,
        'status': 'broken',
        'code': 0,
        'uri': 'http://localhost:7777/image2.png',
        'info': '404 Client Error: Not Found for url: http://localhost:7777/image2.png',
    }
    # looking for '#top' and '#does-not-exist' not found should fail
    assert rowsby["http://localhost:7777/#top"]["info"] == "Anchor 'top' not found"
    assert rowsby["http://localhost:7777/#top"]["status"] == "broken"
    assert rowsby["http://localhost:7777#does-not-exist"]["info"] == "Anchor 'does-not-exist' not found"
    # images should fail
    assert "Not Found for url: http://localhost:7777/image.png" in rowsby["http://localhost:7777/image.png"]["info"]
    # anchor should be found
    assert rowsby['http://localhost:7777/anchor.html#found'] == {
        'filename': 'links.rst',
        'lineno': 14,
        'status': 'working',
        'code': 0,
        'uri': 'http://localhost:7777/anchor.html#found',
        'info': '',
    }


@pytest.mark.sphinx(
    'linkcheck', testroot='linkcheck', freshenv=True,
    confoverrides={'linkcheck_anchors': False})
def test_check_link_response_only(app):
    with http_server(DefaultsHandler):
        app.build()

    # JSON output
    assert (app.outdir / 'output.json').exists()
    content = (app.outdir / 'output.json').read_text(encoding='utf8')

    rows = [json.loads(x) for x in content.splitlines()]
    rowsby = {row["uri"]: row for row in rows}
    assert rowsby["http://localhost:7777/#top"]["status"] == "working"


@pytest.mark.sphinx('linkcheck', testroot='linkcheck-too-many-retries', freshenv=True)
def test_too_many_retries(app):
    with http_server(DefaultsHandler):
        app.build()

    # Text output
    assert (app.outdir / 'output.txt').exists()
    content = (app.outdir / 'output.txt').read_text(encoding='utf8')

    # looking for non-existent URL should fail
    assert " Max retries exceeded with url: /doesnotexist" in content

    # JSON output
    assert (app.outdir / 'output.json').exists()
    content = (app.outdir / 'output.json').read_text(encoding='utf8')

    assert len(content.splitlines()) == 1
    row = json.loads(content)
    # the output order of the rows is not stable
    # due to possible variance in network latency

    # looking for non-existent URL should fail
    assert row['filename'] == 'index.rst'
    assert row['lineno'] == 1
    assert row['status'] == 'broken'
    assert row['code'] == 0
    assert row['uri'] == 'https://localhost:7777/doesnotexist'


@pytest.mark.sphinx('linkcheck', testroot='linkcheck-raw-node', freshenv=True)
def test_raw_node(app):
    with http_server(OKHandler):
        app.build()

    # JSON output
    assert (app.outdir / 'output.json').exists()
    content = (app.outdir / 'output.json').read_text(encoding='utf8')

    assert len(content.splitlines()) == 1
    row = json.loads(content)

    # raw nodes' url should be checked too
    assert row == {
        'filename': 'index.rst',
        'lineno': 1,
        'status': 'working',
        'code': 0,
        'uri': 'http://localhost:7777/',
        'info': '',
    }


@pytest.mark.sphinx(
    'linkcheck', testroot='linkcheck-anchors-ignore', freshenv=True,
    confoverrides={'linkcheck_anchors_ignore': ["^!", "^top$"]})
def test_anchors_ignored(app):
    with http_server(OKHandler):
        app.build()

    assert (app.outdir / 'output.txt').exists()
    content = (app.outdir / 'output.txt').read_text(encoding='utf8')

    # expect all ok when excluding #top
    assert not content


class AnchorsIgnoreForUrlHandler(http.server.BaseHTTPRequestHandler):
    def do_HEAD(self):
        if self.path in {'/valid', '/ignored'}:
            self.send_response(200, "OK")
        else:
            self.send_response(404, "Not Found")
        self.end_headers()

    def do_GET(self):
        self.do_HEAD()
        if self.path == '/valid':
            self.wfile.write(b"<h1 id='valid-anchor'>valid anchor</h1>\n")
        elif self.path == '/ignored':
            self.wfile.write(b"no anchor but page exists\n")


@pytest.mark.sphinx(
    'linkcheck', testroot='linkcheck-anchors-ignore-for-url', freshenv=True,
    confoverrides={'linkcheck_anchors_ignore_for_url': [
        'http://localhost:7777/ignored',  # existing page
        'http://localhost:7777/invalid',  # unknown page
    ]})
def test_anchors_ignored_for_url(app):
    with http_server(AnchorsIgnoreForUrlHandler):
        app.build()

    assert (app.outdir / 'output.txt').exists()
    content = (app.outdir / 'output.json').read_text(encoding='utf8')

    attrs = ('filename', 'lineno', 'status', 'code', 'uri', 'info')
    data = [json.loads(x) for x in content.splitlines()]
    assert len(data) == 7
    assert all(all(attr in row for attr in attrs) for row in data)

    # rows may be unsorted due to network latency or
    # the order the threads are processing the links
    rows = {r['uri']: {'status': r['status'], 'info': r['info']} for r in data}

    assert rows['http://localhost:7777/valid']['status'] == 'working'
    assert rows['http://localhost:7777/valid#valid-anchor']['status'] == 'working'
    assert rows['http://localhost:7777/valid#invalid-anchor'] == {
        'status': 'broken',
        'info': "Anchor 'invalid-anchor' not found",
    }

    assert rows['http://localhost:7777/ignored']['status'] == 'working'
    assert rows['http://localhost:7777/ignored#invalid-anchor']['status'] == 'working'

    assert rows['http://localhost:7777/invalid'] == {
        'status': 'broken',
        'info': '404 Client Error: Not Found for url: http://localhost:7777/invalid',
    }
    assert rows['http://localhost:7777/invalid#anchor'] == {
        'status': 'broken',
        'info': '404 Client Error: Not Found for url: http://localhost:7777/invalid',
    }


@pytest.mark.sphinx('linkcheck', testroot='linkcheck-localserver-anchor', freshenv=True)
def test_raises_for_invalid_status(app):
    class InternalServerErrorHandler(http.server.BaseHTTPRequestHandler):
        protocol_version = "HTTP/1.1"

        def do_GET(self):
            self.send_error(500, "Internal Server Error")

    with http_server(InternalServerErrorHandler):
        app.build()
    content = (app.outdir / 'output.txt').read_text(encoding='utf8')
    assert content == (
        "index.rst:1: [broken] http://localhost:7777/#anchor: "
        "500 Server Error: Internal Server Error "
        "for url: http://localhost:7777/\n"
    )


def custom_handler(valid_credentials=(), success_criteria=lambda _: True):
    """
    Returns an HTTP request handler that authenticates the client and then determines
    an appropriate HTTP response code, based on caller-provided credentials and optional
    success criteria, respectively.
    """
    expected_token = None
    if valid_credentials:
        assert len(valid_credentials) == 2, "expected a pair of strings as credentials"
        expected_token = b64encode(":".join(valid_credentials).encode()).decode("utf-8")
        del valid_credentials

    class CustomHandler(http.server.BaseHTTPRequestHandler):
        protocol_version = "HTTP/1.1"

        def authenticated(method):
            def method_if_authenticated(self):
                if (expected_token is None
                        or self.headers["Authorization"] == f"Basic {expected_token}"):
                    return method(self)
                else:
                    self.send_response(403, "Forbidden")
                    self.send_header("Content-Length", "0")
                    self.end_headers()

            return method_if_authenticated

        @authenticated
        def do_HEAD(self):
            self.do_GET()

        @authenticated
        def do_GET(self):
            if success_criteria(self):
                self.send_response(200, "OK")
                self.send_header("Content-Length", "0")
            else:
                self.send_response(400, "Bad Request")
                self.send_header("Content-Length", "0")
            self.end_headers()

    return CustomHandler


@pytest.mark.sphinx(
    'linkcheck', testroot='linkcheck-localserver', freshenv=True,
    confoverrides={'linkcheck_auth': [
        (r'^$', ('no', 'match')),
        (r'^http://localhost:7777/$', ('user1', 'password')),
        (r'.*local.*', ('user2', 'hunter2')),
    ]})
def test_auth_header_uses_first_match(app):
    with http_server(custom_handler(valid_credentials=("user1", "password"))):
        app.build()

    with open(app.outdir / "output.json", encoding="utf-8") as fp:
        content = json.load(fp)

    assert content["status"] == "working"


@pytest.mark.sphinx(
    'linkcheck', testroot='linkcheck-localserver', freshenv=True,
    confoverrides={'linkcheck_auth': [(r'^$', ('user1', 'password'))]})
def test_auth_header_no_match(app):
    with http_server(custom_handler(valid_credentials=("user1", "password"))):
        app.build()

    with open(app.outdir / "output.json", encoding="utf-8") as fp:
        content = json.load(fp)

    # TODO: should this test's webserver return HTTP 401 here?
    # https://github.com/sphinx-doc/sphinx/issues/11433
    assert content["info"] == "403 Client Error: Forbidden for url: http://localhost:7777/"
    assert content["status"] == "broken"


@pytest.mark.sphinx(
    'linkcheck', testroot='linkcheck-localserver', freshenv=True,
    confoverrides={'linkcheck_request_headers': {
        "http://localhost:7777/": {
            "Accept": "text/html",
        },
        "*": {
            "X-Secret": "open sesami",
        },
    }})
def test_linkcheck_request_headers(app):
    def check_headers(self):
        if "X-Secret" in self.headers:
            return False
        if self.headers["Accept"] != "text/html":
            return False
        return True

    with http_server(custom_handler(success_criteria=check_headers)):
        app.build()

    with open(app.outdir / "output.json", encoding="utf-8") as fp:
        content = json.load(fp)

    assert content["status"] == "working"


@pytest.mark.sphinx(
    'linkcheck', testroot='linkcheck-localserver', freshenv=True,
    confoverrides={'linkcheck_request_headers': {
        "http://localhost:7777": {"Accept": "application/json"},
        "*": {"X-Secret": "open sesami"},
    }})
def test_linkcheck_request_headers_no_slash(app):
    def check_headers(self):
        if "X-Secret" in self.headers:
            return False
        if self.headers["Accept"] != "application/json":
            return False
        return True

    with http_server(custom_handler(success_criteria=check_headers)):
        app.build()

    with open(app.outdir / "output.json", encoding="utf-8") as fp:
        content = json.load(fp)

    assert content["status"] == "working"


@pytest.mark.sphinx(
    'linkcheck', testroot='linkcheck-localserver', freshenv=True,
    confoverrides={'linkcheck_request_headers': {
        "http://do.not.match.org": {"Accept": "application/json"},
        "*": {"X-Secret": "open sesami"},
    }})
def test_linkcheck_request_headers_default(app):
    def check_headers(self):
        if self.headers["X-Secret"] != "open sesami":
            return False
        if self.headers["Accept"] == "application/json":
            return False
        return True

    with http_server(custom_handler(success_criteria=check_headers)):
        app.build()

    with open(app.outdir / "output.json", encoding="utf-8") as fp:
        content = json.load(fp)

    assert content["status"] == "working"


def make_redirect_handler(*, support_head):
    class RedirectOnceHandler(http.server.BaseHTTPRequestHandler):
        protocol_version = "HTTP/1.1"

        def do_HEAD(self):
            if support_head:
                self.do_GET()
            else:
                self.send_response(405, "Method Not Allowed")
                self.send_header("Content-Length", "0")
                self.end_headers()

        def do_GET(self):
            if self.path == "/?redirected=1":
                self.send_response(204, "No content")
            else:
                self.send_response(302, "Found")
                self.send_header("Location", "http://localhost:7777/?redirected=1")
            self.send_header("Content-Length", "0")
            self.end_headers()

        def log_date_time_string(self):
            """Strip date and time from logged messages for assertions."""
            return ""

    return RedirectOnceHandler


@pytest.mark.sphinx('linkcheck', testroot='linkcheck-localserver', freshenv=True)
def test_follows_redirects_on_HEAD(app, capsys, warning):
    with http_server(make_redirect_handler(support_head=True)):
        app.build()
    stdout, stderr = capsys.readouterr()
    content = (app.outdir / 'output.txt').read_text(encoding='utf8')
    assert content == (
        "index.rst:1: [redirected with Found] "
        "http://localhost:7777/ to http://localhost:7777/?redirected=1\n"
    )
    assert stderr == textwrap.dedent(
        """\
        127.0.0.1 - - [] "HEAD / HTTP/1.1" 302 -
        127.0.0.1 - - [] "HEAD /?redirected=1 HTTP/1.1" 204 -
        """,
    )
    assert warning.getvalue() == ''


@pytest.mark.sphinx('linkcheck', testroot='linkcheck-localserver', freshenv=True)
def test_follows_redirects_on_GET(app, capsys, warning):
    with http_server(make_redirect_handler(support_head=False)):
        app.build()
    stdout, stderr = capsys.readouterr()
    content = (app.outdir / 'output.txt').read_text(encoding='utf8')
    assert content == (
        "index.rst:1: [redirected with Found] "
        "http://localhost:7777/ to http://localhost:7777/?redirected=1\n"
    )
    assert stderr == textwrap.dedent(
        """\
        127.0.0.1 - - [] "HEAD / HTTP/1.1" 405 -
        127.0.0.1 - - [] "GET / HTTP/1.1" 302 -
        127.0.0.1 - - [] "GET /?redirected=1 HTTP/1.1" 204 -
        """,
    )
    assert warning.getvalue() == ''


@pytest.mark.sphinx('linkcheck', testroot='linkcheck-localserver-warn-redirects',
                    freshenv=True, confoverrides={
                        'linkcheck_allowed_redirects': {'http://localhost:7777/.*1': '.*'},
                    })
def test_linkcheck_allowed_redirects(app, warning):
    with http_server(make_redirect_handler(support_head=False)):
        app.build()

    with open(app.outdir / 'output.json', encoding='utf-8') as fp:
        rows = [json.loads(l) for l in fp.readlines()]

    assert len(rows) == 2
    records = {row["uri"]: row for row in rows}
    assert records["http://localhost:7777/path1"]["status"] == "working"
    assert records["http://localhost:7777/path2"] == {
        'filename': 'index.rst',
        'lineno': 3,
        'status': 'redirected',
        'code': 302,
        'uri': 'http://localhost:7777/path2',
        'info': 'http://localhost:7777/?redirected=1',
    }

    assert ("index.rst:3: WARNING: redirect  http://localhost:7777/path2 - with Found to "
            "http://localhost:7777/?redirected=1\n" in strip_escseq(warning.getvalue()))
    assert len(warning.getvalue().splitlines()) == 1


class OKHandler(http.server.BaseHTTPRequestHandler):
    protocol_version = "HTTP/1.1"

    def do_HEAD(self):
        self.send_response(200, "OK")
        self.send_header("Content-Length", "0")
        self.end_headers()

    def do_GET(self):
        content = b"ok\n"
        self.send_response(200, "OK")
        self.send_header("Content-Length", str(len(content)))
        self.end_headers()
        self.wfile.write(content)


@mock.patch("sphinx.builders.linkcheck.requests.get", wraps=requests.get)
@pytest.mark.sphinx('linkcheck', testroot='linkcheck-localserver-https', freshenv=True)
def test_invalid_ssl(get_request, app):
    # Link indicates SSL should be used (https) but the server does not handle it.
    with http_server(OKHandler):
        app.build()
        assert not get_request.called

    with open(app.outdir / 'output.json', encoding='utf-8') as fp:
        content = json.load(fp)
    assert content["status"] == "broken"
    assert content["filename"] == "index.rst"
    assert content["lineno"] == 1
    assert content["uri"] == "https://localhost:7777/"
    assert "SSLError" in content["info"]


@pytest.mark.sphinx('linkcheck', testroot='linkcheck-localserver-https', freshenv=True)
def test_connect_to_selfsigned_fails(app):
    with https_server(OKHandler):
        app.build()

    with open(app.outdir / 'output.json', encoding='utf-8') as fp:
        content = json.load(fp)
    assert content["status"] == "broken"
    assert content["filename"] == "index.rst"
    assert content["lineno"] == 1
    assert content["uri"] == "https://localhost:7777/"
    assert "[SSL: CERTIFICATE_VERIFY_FAILED]" in content["info"]


@pytest.mark.sphinx('linkcheck', testroot='linkcheck-localserver-https', freshenv=True)
def test_connect_to_selfsigned_with_tls_verify_false(app):
    app.config.tls_verify = False
    with https_server(OKHandler):
        app.build()

    with open(app.outdir / 'output.json', encoding='utf-8') as fp:
        content = json.load(fp)
    assert content == {
        "code": 0,
        "status": "working",
        "filename": "index.rst",
        "lineno": 1,
        "uri": "https://localhost:7777/",
        "info": "",
    }


@pytest.mark.sphinx('linkcheck', testroot='linkcheck-localserver-https', freshenv=True)
def test_connect_to_selfsigned_with_tls_cacerts(app):
    app.config.tls_cacerts = CERT_FILE
    with https_server(OKHandler):
        app.build()

    with open(app.outdir / 'output.json', encoding='utf-8') as fp:
        content = json.load(fp)
    assert content == {
        "code": 0,
        "status": "working",
        "filename": "index.rst",
        "lineno": 1,
        "uri": "https://localhost:7777/",
        "info": "",
    }


@pytest.mark.sphinx('linkcheck', testroot='linkcheck-localserver-https', freshenv=True)
def test_connect_to_selfsigned_with_requests_env_var(monkeypatch, app):
    monkeypatch.setenv("REQUESTS_CA_BUNDLE", CERT_FILE)
    with https_server(OKHandler):
        app.build()

    with open(app.outdir / 'output.json', encoding='utf-8') as fp:
        content = json.load(fp)
    assert content == {
        "code": 0,
        "status": "working",
        "filename": "index.rst",
        "lineno": 1,
        "uri": "https://localhost:7777/",
        "info": "",
    }


@pytest.mark.sphinx('linkcheck', testroot='linkcheck-localserver-https', freshenv=True)
def test_connect_to_selfsigned_nonexistent_cert_file(app):
    app.config.tls_cacerts = "does/not/exist"
    with https_server(OKHandler):
        app.build()

    with open(app.outdir / 'output.json', encoding='utf-8') as fp:
        content = json.load(fp)
    assert content == {
        "code": 0,
        "status": "broken",
        "filename": "index.rst",
        "lineno": 1,
        "uri": "https://localhost:7777/",
        "info": "Could not find a suitable TLS CA certificate bundle, invalid path: does/not/exist",
    }


class InfiniteRedirectOnHeadHandler(http.server.BaseHTTPRequestHandler):
    protocol_version = "HTTP/1.1"

    def do_HEAD(self):
        self.send_response(302, "Found")
        self.send_header("Location", "http://localhost:7777/")
        self.send_header("Content-Length", "0")
        self.end_headers()

    def do_GET(self):
        content = b"ok\n"
        self.send_response(200, "OK")
        self.send_header("Content-Length", str(len(content)))
        self.end_headers()
        self.wfile.write(content)
        self.close_connection = True  # we don't expect the client to read this response body


@pytest.mark.sphinx('linkcheck', testroot='linkcheck-localserver', freshenv=True)
def test_TooManyRedirects_on_HEAD(app, monkeypatch):
    import requests.sessions

    monkeypatch.setattr(requests.sessions, "DEFAULT_REDIRECT_LIMIT", 5)

    with http_server(InfiniteRedirectOnHeadHandler):
        app.build()

    with open(app.outdir / 'output.json', encoding='utf-8') as fp:
        content = json.load(fp)
    assert content == {
        "code": 0,
        "status": "working",
        "filename": "index.rst",
        "lineno": 1,
        "uri": "http://localhost:7777/",
        "info": "",
    }


def make_retry_after_handler(responses):
    class RetryAfterHandler(http.server.BaseHTTPRequestHandler):
        protocol_version = "HTTP/1.1"

        def do_HEAD(self):
            status, retry_after = responses.pop(0)
            self.send_response(status)
            if retry_after:
                self.send_header('Retry-After', retry_after)
            self.send_header("Content-Length", "0")
            self.end_headers()

        def log_date_time_string(self):
            """Strip date and time from logged messages for assertions."""
            return ""

    return RetryAfterHandler


@pytest.mark.sphinx('linkcheck', testroot='linkcheck-localserver', freshenv=True)
def test_too_many_requests_retry_after_int_delay(app, capsys, status):
    with http_server(make_retry_after_handler([(429, "0"), (200, None)])), \
         mock.patch("sphinx.builders.linkcheck.DEFAULT_DELAY", 0), \
         mock.patch("sphinx.builders.linkcheck.QUEUE_POLL_SECS", 0.01):
        app.build()
    content = (app.outdir / 'output.json').read_text(encoding='utf8')
    assert json.loads(content) == {
        "filename": "index.rst",
        "lineno": 1,
        "status": "working",
        "code": 0,
        "uri": "http://localhost:7777/",
        "info": "",
    }
    rate_limit_log = "-rate limited-   http://localhost:7777/ | sleeping...\n"
    assert rate_limit_log in strip_colors(status.getvalue())
    _stdout, stderr = capsys.readouterr()
    assert stderr == textwrap.dedent(
        """\
        127.0.0.1 - - [] "HEAD / HTTP/1.1" 429 -
        127.0.0.1 - - [] "HEAD / HTTP/1.1" 200 -
        """,
    )


@pytest.mark.parametrize('tz', [None, 'GMT', 'GMT+3', 'GMT-3'])
@pytest.mark.sphinx('linkcheck', testroot='linkcheck-localserver', freshenv=True)
def test_too_many_requests_retry_after_HTTP_date(tz, app, monkeypatch, capsys):
    retry_after = wsgiref.handlers.format_date_time(time.time())

    with monkeypatch.context() as m:
        if tz is not None:
            m.setenv('TZ', tz)
            if sys.platform != "win32":
                time.tzset()
            m.setattr(sphinx.util.http_date, '_GMT_OFFSET',
                      float(time.localtime().tm_gmtoff))

        with http_server(make_retry_after_handler([(429, retry_after), (200, None)])):
            app.build()

    content = (app.outdir / 'output.json').read_text(encoding='utf8')
    assert json.loads(content) == {
        "filename": "index.rst",
        "lineno": 1,
        "status": "working",
        "code": 0,
        "uri": "http://localhost:7777/",
        "info": "",
    }
    _stdout, stderr = capsys.readouterr()
    assert stderr == textwrap.dedent(
        """\
        127.0.0.1 - - [] "HEAD / HTTP/1.1" 429 -
        127.0.0.1 - - [] "HEAD / HTTP/1.1" 200 -
        """,
    )


@pytest.mark.sphinx('linkcheck', testroot='linkcheck-localserver', freshenv=True)
def test_too_many_requests_retry_after_without_header(app, capsys):
    with http_server(make_retry_after_handler([(429, None), (200, None)])), \
         mock.patch("sphinx.builders.linkcheck.DEFAULT_DELAY", 0):
        app.build()
    content = (app.outdir / 'output.json').read_text(encoding='utf8')
    assert json.loads(content) == {
        "filename": "index.rst",
        "lineno": 1,
        "status": "working",
        "code": 0,
        "uri": "http://localhost:7777/",
        "info": "",
    }
    _stdout, stderr = capsys.readouterr()
    assert stderr == textwrap.dedent(
        """\
        127.0.0.1 - - [] "HEAD / HTTP/1.1" 429 -
        127.0.0.1 - - [] "HEAD / HTTP/1.1" 200 -
        """,
    )


@pytest.mark.sphinx('linkcheck', testroot='linkcheck-localserver', freshenv=True)
def test_too_many_requests_user_timeout(app):
    app.config.linkcheck_rate_limit_timeout = 0.0
    with http_server(make_retry_after_handler([(429, None)])):
        app.build()
    content = (app.outdir / 'output.json').read_text(encoding='utf8')
    assert json.loads(content) == {
        "filename": "index.rst",
        "lineno": 1,
        "status": "broken",
        "code": 0,
        "uri": "http://localhost:7777/",
        "info": "429 Client Error: Too Many Requests for url: http://localhost:7777/",
    }


class FakeResponse:
    headers: dict[str, str] = {}
    url = "http://localhost/"


def test_limit_rate_default_sleep(app):
    worker = HyperlinkAvailabilityCheckWorker(app.config, Queue(), Queue(), {})
    with mock.patch('time.time', return_value=0.0):
        next_check = worker.limit_rate(FakeResponse.url, FakeResponse.headers.get("Retry-After"))
    assert next_check == 60.0


def test_limit_rate_user_max_delay(app):
    app.config.linkcheck_rate_limit_timeout = 0.0
    worker = HyperlinkAvailabilityCheckWorker(app.config, Queue(), Queue(), {})
    next_check = worker.limit_rate(FakeResponse.url, FakeResponse.headers.get("Retry-After"))
    assert next_check is None


def test_limit_rate_doubles_previous_wait_time(app):
    rate_limits = {"localhost": RateLimit(60.0, 0.0)}
    worker = HyperlinkAvailabilityCheckWorker(app.config, Queue(), Queue(), rate_limits)
    with mock.patch('time.time', return_value=0.0):
        next_check = worker.limit_rate(FakeResponse.url, FakeResponse.headers.get("Retry-After"))
    assert next_check == 120.0


def test_limit_rate_clips_wait_time_to_max_time(app):
    app.config.linkcheck_rate_limit_timeout = 90.0
    rate_limits = {"localhost": RateLimit(60.0, 0.0)}
    worker = HyperlinkAvailabilityCheckWorker(app.config, Queue(), Queue(), rate_limits)
    with mock.patch('time.time', return_value=0.0):
        next_check = worker.limit_rate(FakeResponse.url, FakeResponse.headers.get("Retry-After"))
    assert next_check == 90.0


def test_limit_rate_bails_out_after_waiting_max_time(app):
    app.config.linkcheck_rate_limit_timeout = 90.0
    rate_limits = {"localhost": RateLimit(90.0, 0.0)}
    worker = HyperlinkAvailabilityCheckWorker(app.config, Queue(), Queue(), rate_limits)
    next_check = worker.limit_rate(FakeResponse.url, FakeResponse.headers.get("Retry-After"))
    assert next_check is None


@mock.patch('sphinx.util.requests.requests.Session.get_adapter')
def test_connection_contention(get_adapter, app, capsys):
    # Create a shared, but limited-size, connection pool
    import requests
    get_adapter.return_value = requests.adapters.HTTPAdapter(pool_maxsize=1)

    # Set an upper-bound on socket timeouts globally
    import socket
    socket.setdefaulttimeout(5)

    # Place a workload into the linkcheck queue
    link_count = 10
    rqueue, wqueue = Queue(), Queue()
    for _ in range(link_count):
        wqueue.put(CheckRequest(0, Hyperlink("http://localhost:7777", "test", "test.rst", 1)))

    # Create parallel consumer threads
    with http_server(make_redirect_handler(support_head=True)):
        begin, checked = time.time(), []
        threads = [
            HyperlinkAvailabilityCheckWorker(
                config=app.config,
                rqueue=rqueue,
                wqueue=wqueue,
                rate_limits={},
            )
            for _ in range(10)
        ]
        for thread in threads:
            thread.start()
        while time.time() < begin + 5 and len(checked) < link_count:
            checked.append(rqueue.get(timeout=5))
        for thread in threads:
            thread.join(timeout=0)

    # Ensure that all items were consumed within the time limit
    _, stderr = capsys.readouterr()
    assert len(checked) == link_count
    assert "TimeoutError" not in stderr


class ConnectionResetHandler(http.server.BaseHTTPRequestHandler):
    protocol_version = "HTTP/1.1"

    def do_HEAD(self):
        self.close_connection = True

    def do_GET(self):
        self.send_response(200, "OK")
        self.send_header("Content-Length", "0")
        self.end_headers()


@pytest.mark.sphinx('linkcheck', testroot='linkcheck-localserver', freshenv=True)
def test_get_after_head_raises_connection_error(app):
    with http_server(ConnectionResetHandler):
        app.build()
    content = (app.outdir / 'output.txt').read_text(encoding='utf8')
    assert not content
    content = (app.outdir / 'output.json').read_text(encoding='utf8')
    assert json.loads(content) == {
        "filename": "index.rst",
        "lineno": 1,
        "status": "working",
        "code": 0,
        "uri": "http://localhost:7777/",
        "info": "",
    }


@pytest.mark.sphinx('linkcheck', testroot='linkcheck-documents_exclude', freshenv=True)
def test_linkcheck_exclude_documents(app):
    with http_server(DefaultsHandler):
        app.build()

    with open(app.outdir / 'output.json', encoding='utf-8') as fp:
        content = [json.loads(record) for record in fp]

    assert content == [
        {
            'filename': 'broken_link.rst',
            'lineno': 4,
            'status': 'ignored',
            'code': 0,
            'uri': 'https://www.sphinx-doc.org/this-is-a-broken-link',
            'info': 'broken_link matched ^broken_link$ from linkcheck_exclude_documents',
        },
        {
            'filename': 'br0ken_link.rst',
            'lineno': 4,
            'status': 'ignored',
            'code': 0,
            'uri': 'https://www.sphinx-doc.org/this-is-another-broken-link',
            'info': 'br0ken_link matched br[0-9]ken_link from linkcheck_exclude_documents',
        },
    ]