summaryrefslogtreecommitdiffstats
path: root/testing/xpcshell/runxpcshelltests.py
blob: 2f1d26d715911ede7c2c8bbdbde32416bbad795d (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
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
#!/usr/bin/env python
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

import copy
import json
import os
import pipes
import platform
import random
import re
import shutil
import signal
import subprocess
import sys
import tempfile
import time
import traceback
from argparse import Namespace
from collections import defaultdict, deque, namedtuple
from contextlib import contextmanager
from datetime import datetime, timedelta
from functools import partial
from multiprocessing import cpu_count
from subprocess import PIPE, STDOUT, Popen
from tempfile import gettempdir, mkdtemp
from threading import Event, Thread, Timer, current_thread

import mozdebug
import six
from mozserve import Http3Server

try:
    import psutil

    HAVE_PSUTIL = True
except Exception:
    HAVE_PSUTIL = False

from xpcshellcommandline import parser_desktop

SCRIPT_DIR = os.path.abspath(os.path.realpath(os.path.dirname(__file__)))

try:
    from mozbuild.base import MozbuildObject

    build = MozbuildObject.from_environment(cwd=SCRIPT_DIR)
except ImportError:
    build = None

HARNESS_TIMEOUT = 5 * 60
TBPL_RETRY = 4  # defined in mozharness

# benchmarking on tbpl revealed that this works best for now
# TODO: This has been evaluated/set many years ago and we might want to
# benchmark this again.
# These days with e10s/fission the number of real processes/threads running
# can be significantly higher, with both consequences on runtime and memory
# consumption. So be aware that NUM_THREADS is just saying how many tests will
# be started maximum in parallel and that depending on the tests there is
# only a weak correlation to the effective number of processes or threads.
# Be also aware that we can override this value with the threadCount option
# on the command line to tweak it for a concrete CPU/memory combination.
NUM_THREADS = int(cpu_count() * 4)
if sys.platform == "win32":
    NUM_THREADS = NUM_THREADS / 2

EXPECTED_LOG_ACTIONS = set(
    [
        "crash_reporter_init",
        "test_status",
        "log",
    ]
)

# --------------------------------------------------------------
# TODO: this is a hack for mozbase without virtualenv, remove with bug 849900
#
here = os.path.dirname(__file__)
mozbase = os.path.realpath(os.path.join(os.path.dirname(here), "mozbase"))

if os.path.isdir(mozbase):
    for package in os.listdir(mozbase):
        sys.path.append(os.path.join(mozbase, package))

import mozcrash
import mozfile
import mozinfo
from manifestparser import TestManifest
from manifestparser.filters import chunk_by_slice, failures, pathprefix, tags
from manifestparser.util import normsep
from mozlog import commandline
from mozprofile import Profile
from mozprofile.cli import parse_preferences
from mozrunner.utils import get_stack_fixer_function

# --------------------------------------------------------------

# TODO: perhaps this should be in a more generally shared location?
# This regex matches all of the C0 and C1 control characters
# (U+0000 through U+001F; U+007F; U+0080 through U+009F),
# except TAB (U+0009), CR (U+000D), LF (U+000A) and backslash (U+005C).
# A raw string is deliberately not used.
_cleanup_encoding_re = re.compile("[\x00-\x08\x0b\x0c\x0e-\x1f\x7f-\x9f\\\\]")


def get_full_group_name(test):
    group = test["manifest"]
    if "ancestor_manifest" in test:
        ancestor_manifest = normsep(test["ancestor_manifest"])
        # Only change the group id if ancestor is not the generated root manifest.
        if "/" in ancestor_manifest:
            group = "{}:{}".format(ancestor_manifest, group)
    return group


def _cleanup_encoding_repl(m):
    c = m.group(0)
    return "\\\\" if c == "\\" else "\\x{0:02X}".format(ord(c))


def cleanup_encoding(s):
    """S is either a byte or unicode string.  Either way it may
    contain control characters, unpaired surrogates, reserved code
    points, etc.  If it is a byte string, it is assumed to be
    UTF-8, but it may not be *correct* UTF-8.  Return a
    sanitized unicode object."""
    if not isinstance(s, six.string_types):
        if isinstance(s, six.binary_type):
            return six.ensure_str(s)
        else:
            return six.text_type(s)
    if isinstance(s, six.binary_type):
        s = s.decode("utf-8", "replace")
    # Replace all C0 and C1 control characters with \xNN escapes.
    return _cleanup_encoding_re.sub(_cleanup_encoding_repl, s)


@contextmanager
def popenCleanupHack():
    """
    Hack to work around https://bugs.python.org/issue37380
    The basic idea is that on old versions of Python on Windows,
    we need to clear subprocess._cleanup before we call Popen(),
    then restore it afterwards.
    """
    savedCleanup = None
    if mozinfo.isWin and sys.version_info[0] == 3 and sys.version_info < (3, 7, 5):
        savedCleanup = subprocess._cleanup
        subprocess._cleanup = lambda: None
    try:
        yield
    finally:
        if savedCleanup:
            subprocess._cleanup = savedCleanup


""" Control-C handling """
gotSIGINT = False


def markGotSIGINT(signum, stackFrame):
    global gotSIGINT
    gotSIGINT = True


class XPCShellTestThread(Thread):
    def __init__(
        self,
        test_object,
        retry=True,
        verbose=False,
        usingTSan=False,
        usingCrashReporter=False,
        **kwargs
    ):
        Thread.__init__(self)
        self.daemon = True

        self.test_object = test_object
        self.retry = retry
        self.verbose = verbose
        self.usingTSan = usingTSan
        self.usingCrashReporter = usingCrashReporter

        self.appPath = kwargs.get("appPath")
        self.xrePath = kwargs.get("xrePath")
        self.utility_path = kwargs.get("utility_path")
        self.testingModulesDir = kwargs.get("testingModulesDir")
        self.debuggerInfo = kwargs.get("debuggerInfo")
        self.jsDebuggerInfo = kwargs.get("jsDebuggerInfo")
        self.headJSPath = kwargs.get("headJSPath")
        self.testharnessdir = kwargs.get("testharnessdir")
        self.profileName = kwargs.get("profileName")
        self.singleFile = kwargs.get("singleFile")
        self.env = copy.deepcopy(kwargs.get("env"))
        self.symbolsPath = kwargs.get("symbolsPath")
        self.logfiles = kwargs.get("logfiles")
        self.app_binary = kwargs.get("app_binary")
        self.xpcshell = kwargs.get("xpcshell")
        self.xpcsRunArgs = kwargs.get("xpcsRunArgs")
        self.failureManifest = kwargs.get("failureManifest")
        self.jscovdir = kwargs.get("jscovdir")
        self.stack_fixer_function = kwargs.get("stack_fixer_function")
        self._rootTempDir = kwargs.get("tempDir")
        self.cleanup_dir_list = kwargs.get("cleanup_dir_list")
        self.pStdout = kwargs.get("pStdout")
        self.pStderr = kwargs.get("pStderr")
        self.keep_going = kwargs.get("keep_going")
        self.log = kwargs.get("log")
        self.app_dir_key = kwargs.get("app_dir_key")
        self.interactive = kwargs.get("interactive")
        self.rootPrefsFile = kwargs.get("rootPrefsFile")
        self.extraPrefs = kwargs.get("extraPrefs")
        self.verboseIfFails = kwargs.get("verboseIfFails")
        self.headless = kwargs.get("headless")
        self.runFailures = kwargs.get("runFailures")
        self.timeoutAsPass = kwargs.get("timeoutAsPass")
        self.crashAsPass = kwargs.get("crashAsPass")
        self.conditionedProfileDir = kwargs.get("conditionedProfileDir")
        if self.runFailures:
            self.retry = False

        # Default the test prefsFile to the rootPrefsFile.
        self.prefsFile = self.rootPrefsFile

        # only one of these will be set to 1. adding them to the totals in
        # the harness
        self.passCount = 0
        self.todoCount = 0
        self.failCount = 0

        # Context for output processing
        self.output_lines = []
        self.has_failure_output = False
        self.saw_crash_reporter_init = False
        self.saw_proc_start = False
        self.saw_proc_end = False
        self.command = None
        self.harness_timeout = kwargs.get("harness_timeout")
        self.timedout = False
        self.infra = False

        # event from main thread to signal work done
        self.event = kwargs.get("event")
        self.done = False  # explicitly set flag so we don't rely on thread.isAlive

    def run(self):
        try:
            self.run_test()
        except PermissionError as e:
            self.infra = True
            self.exception = e
            self.traceback = traceback.format_exc()
        except Exception as e:
            self.exception = e
            self.traceback = traceback.format_exc()
        else:
            self.exception = None
            self.traceback = None
        if self.retry:
            self.log.info(
                "%s failed or timed out, will retry." % self.test_object["id"]
            )
        self.done = True
        self.event.set()

    def kill(self, proc):
        """
        Simple wrapper to kill a process.
        On a remote system, this is overloaded to handle remote process communication.
        """
        return proc.kill()

    def removeDir(self, dirname):
        """
        Simple wrapper to remove (recursively) a given directory.
        On a remote system, we need to overload this to work on the remote filesystem.
        """
        mozfile.remove(dirname)

    def poll(self, proc):
        """
        Simple wrapper to check if a process has terminated.
        On a remote system, this is overloaded to handle remote process communication.
        """
        return proc.poll()

    def createLogFile(self, test_file, stdout):
        """
        For a given test file and stdout buffer, create a log file.
        On a remote system we have to fix the test name since it can contain directories.
        """
        with open(test_file + ".log", "w") as f:
            f.write(stdout)

    def getReturnCode(self, proc):
        """
        Simple wrapper to get the return code for a given process.
        On a remote system we overload this to work with the remote process management.
        """
        if proc is not None and hasattr(proc, "returncode"):
            return proc.returncode
        return -1

    def communicate(self, proc):
        """
        Simple wrapper to communicate with a process.
        On a remote system, this is overloaded to handle remote process communication.
        """
        # Processing of incremental output put here to
        # sidestep issues on remote platforms, where what we know
        # as proc is a file pulled off of a device.
        if proc.stdout:
            while True:
                line = proc.stdout.readline()
                if not line:
                    break
                self.process_line(line)

            if self.saw_proc_start and not self.saw_proc_end:
                self.has_failure_output = True

        return proc.communicate()

    def launchProcess(
        self, cmd, stdout, stderr, env, cwd, timeout=None, test_name=None
    ):
        """
        Simple wrapper to launch a process.
        On a remote system, this is more complex and we need to overload this function.
        """
        # timeout is needed by remote xpcshell to extend the
        # remote device timeout. It is not used in this function.
        if six.PY3:
            cwd = six.ensure_str(cwd)
            for i in range(len(cmd)):
                cmd[i] = six.ensure_str(cmd[i])

        if HAVE_PSUTIL:
            popen_func = psutil.Popen
        else:
            popen_func = Popen

        with popenCleanupHack():
            proc = popen_func(cmd, stdout=stdout, stderr=stderr, env=env, cwd=cwd)

        return proc

    def checkForCrashes(self, dump_directory, symbols_path, test_name=None):
        """
        Simple wrapper to check for crashes.
        On a remote system, this is more complex and we need to overload this function.
        """
        quiet = False
        if self.crashAsPass:
            quiet = True

        return mozcrash.log_crashes(
            self.log, dump_directory, symbols_path, test=test_name, quiet=quiet
        )

    def logCommand(self, name, completeCmd, testdir):
        self.log.info("%s | full command: %r" % (name, completeCmd))
        self.log.info("%s | current directory: %r" % (name, testdir))
        # Show only those environment variables that are changed from
        # the ambient environment.
        changedEnv = set("%s=%s" % i for i in six.iteritems(self.env)) - set(
            "%s=%s" % i for i in six.iteritems(os.environ)
        )
        self.log.info("%s | environment: %s" % (name, list(changedEnv)))
        shell_command_tokens = [
            pipes.quote(tok) for tok in list(changedEnv) + completeCmd
        ]
        self.log.info(
            "%s | as shell command: (cd %s; %s)"
            % (name, pipes.quote(testdir), " ".join(shell_command_tokens))
        )

    def killTimeout(self, proc):
        if proc is not None and hasattr(proc, "pid"):
            mozcrash.kill_and_get_minidump(
                proc.pid, self.tempDir, utility_path=self.utility_path
            )
        else:
            self.log.info("not killing -- proc or pid unknown")

    def postCheck(self, proc):
        """Checks for a still-running test process, kills it and fails the test if found.
        We can sometimes get here before the process has terminated, which would
        cause removeDir() to fail - so check for the process and kill it if needed.
        """
        if proc and self.poll(proc) is None:
            if HAVE_PSUTIL:
                try:
                    self.kill(proc)
                except psutil.NoSuchProcess:
                    pass
            else:
                self.kill(proc)
            message = "%s | Process still running after test!" % self.test_object["id"]
            if self.retry:
                self.log.info(message)
                return

            self.log.error(message)
            self.log_full_output()
            self.failCount = 1

    def testTimeout(self, proc):
        if self.test_object["expected"] == "pass":
            expected = "PASS"
        else:
            expected = "FAIL"

        if self.retry:
            self.log.test_end(
                self.test_object["id"],
                "TIMEOUT",
                expected="TIMEOUT",
                message="Test timed out",
            )
        else:
            result = "TIMEOUT"
            if self.timeoutAsPass:
                expected = "FAIL"
                result = "FAIL"
            self.failCount = 1
            self.log.test_end(
                self.test_object["id"],
                result,
                expected=expected,
                message="Test timed out",
            )
            self.log_full_output()

        self.done = True
        self.timedout = True
        self.killTimeout(proc)
        self.log.info("xpcshell return code: %s" % self.getReturnCode(proc))
        self.postCheck(proc)
        self.clean_temp_dirs(self.test_object["path"])

    def updateTestPrefsFile(self):
        # If the Manifest file has some additional prefs, merge the
        # prefs set in the user.js file stored in the _rootTempdir
        # with the prefs from the manifest and the prefs specified
        # in the extraPrefs option.
        if "prefs" in self.test_object:
            # Merge the user preferences in a fake profile dir in a
            # local temporary dir (self.tempDir is the remoteTmpDir
            # for the RemoteXPCShellTestThread subclass and so we
            # can't use that tempDir here).
            localTempDir = mkdtemp(prefix="xpc-other-", dir=self._rootTempDir)

            filename = "user.js"
            interpolation = {"server": "dummyserver"}
            profile = Profile(profile=localTempDir, restore=False)
            # _rootTempDir contains a user.js file, generated by buildPrefsFile
            profile.merge(self._rootTempDir, interpolation=interpolation)

            prefs = self.test_object["prefs"].strip().split()
            name = self.test_object["id"]
            if self.verbose:
                self.log.info(
                    "%s: Per-test extra prefs will be set:\n  {}".format(
                        "\n  ".join(prefs)
                    )
                    % name
                )

            profile.set_preferences(parse_preferences(prefs), filename=filename)
            # Make sure that the extra prefs form the command line are overriding
            # any prefs inherited from the shared profile data or the manifest prefs.
            profile.set_preferences(
                parse_preferences(self.extraPrefs), filename=filename
            )
            return os.path.join(profile.profile, filename)

        # Return the root prefsFile if there is no other prefs to merge.
        # This is the path set by buildPrefsFile.
        return self.rootPrefsFile

    @property
    def conditioned_profile_copy(self):
        """Returns a copy of the original conditioned profile that was created."""

        condprof_copy = os.path.join(tempfile.mkdtemp(), "profile")
        shutil.copytree(
            self.conditionedProfileDir,
            condprof_copy,
            ignore=shutil.ignore_patterns("lock"),
        )
        self.log.info("Created a conditioned-profile copy: %s" % condprof_copy)
        return condprof_copy

    def buildCmdTestFile(self, name):
        """
        Build the command line arguments for the test file.
        On a remote system, this may be overloaded to use a remote path structure.
        """
        return ["-e", 'const _TEST_FILE = ["%s"];' % name.replace("\\", "/")]

    def setupTempDir(self):
        tempDir = mkdtemp(prefix="xpc-other-", dir=self._rootTempDir)
        self.env["XPCSHELL_TEST_TEMP_DIR"] = tempDir
        if self.interactive:
            self.log.info("temp dir is %s" % tempDir)
        return tempDir

    def setupProfileDir(self):
        """
        Create a temporary folder for the profile and set appropriate environment variables.
        When running check-interactive and check-one, the directory is well-defined and
        retained for inspection once the tests complete.

        On a remote system, this may be overloaded to use a remote path structure.
        """
        if self.conditionedProfileDir:
            profileDir = self.conditioned_profile_copy
        elif self.interactive or self.singleFile:
            profileDir = os.path.join(gettempdir(), self.profileName, "xpcshellprofile")
            try:
                # This could be left over from previous runs
                self.removeDir(profileDir)
            except Exception:
                pass
            os.makedirs(profileDir)
        else:
            profileDir = mkdtemp(prefix="xpc-profile-", dir=self._rootTempDir)
        self.env["XPCSHELL_TEST_PROFILE_DIR"] = profileDir
        if self.interactive or self.singleFile:
            self.log.info("profile dir is %s" % profileDir)
        return profileDir

    def setupMozinfoJS(self):
        mozInfoJSPath = os.path.join(self.profileDir, "mozinfo.json")
        mozInfoJSPath = mozInfoJSPath.replace("\\", "\\\\")
        mozinfo.output_to_file(mozInfoJSPath)
        return mozInfoJSPath

    def buildCmdHead(self):
        """
        Build the command line arguments for the head files,
        along with the address of the webserver which some tests require.

        On a remote system, this is overloaded to resolve quoting issues over a
        secondary command line.
        """
        headfiles = self.getHeadFiles(self.test_object)
        cmdH = ", ".join(['"' + f.replace("\\", "/") + '"' for f in headfiles])

        dbgport = 0 if self.jsDebuggerInfo is None else self.jsDebuggerInfo.port

        return [
            "-e",
            "const _HEAD_FILES = [%s];" % cmdH,
            "-e",
            "const _JSDEBUGGER_PORT = %d;" % dbgport,
        ]

    def getHeadFiles(self, test):
        """Obtain lists of head- files.  Returns a list of head files."""

        def sanitize_list(s, kind):
            for f in s.strip().split(" "):
                f = f.strip()
                if len(f) < 1:
                    continue

                path = os.path.normpath(os.path.join(test["here"], f))
                if not os.path.exists(path):
                    raise Exception("%s file does not exist: %s" % (kind, path))

                if not os.path.isfile(path):
                    raise Exception("%s file is not a file: %s" % (kind, path))

                yield path

        headlist = test.get("head", "")
        return list(sanitize_list(headlist, "head"))

    def buildXpcsCmd(self):
        """
        Load the root head.js file as the first file in our test path, before other head,
        and test files. On a remote system, we overload this to add additional command
        line arguments, so this gets overloaded.
        """
        # - NOTE: if you rename/add any of the constants set here, update
        #   do_load_child_test_harness() in head.js
        if not self.appPath:
            self.appPath = self.xrePath

        if self.app_binary:
            xpcsCmd = [
                self.app_binary,
                "--xpcshell",
            ]
        else:
            xpcsCmd = [
                self.xpcshell,
            ]

        xpcsCmd += [
            "-g",
            self.xrePath,
            "-a",
            self.appPath,
            "-m",
            "-e",
            'const _HEAD_JS_PATH = "%s";' % self.headJSPath,
            "-e",
            'const _MOZINFO_JS_PATH = "%s";' % self.mozInfoJSPath,
            "-e",
            'const _PREFS_FILE = "%s";' % self.prefsFile.replace("\\", "\\\\"),
        ]

        if self.testingModulesDir:
            # Escape backslashes in string literal.
            sanitized = self.testingModulesDir.replace("\\", "\\\\")
            xpcsCmd.extend(["-e", 'const _TESTING_MODULES_DIR = "%s";' % sanitized])

        xpcsCmd.extend(["-f", os.path.join(self.testharnessdir, "head.js")])

        if self.debuggerInfo:
            xpcsCmd = [self.debuggerInfo.path] + self.debuggerInfo.args + xpcsCmd

        return xpcsCmd

    def cleanupDir(self, directory, name):
        if not os.path.exists(directory):
            return

        # up to TRY_LIMIT attempts (one every second), because
        # the Windows filesystem is slow to react to the changes
        TRY_LIMIT = 25
        try_count = 0
        while try_count < TRY_LIMIT:
            try:
                self.removeDir(directory)
            except OSError:
                self.log.info("Failed to remove directory: %s. Waiting." % directory)
                # We suspect the filesystem may still be making changes. Wait a
                # little bit and try again.
                time.sleep(1)
                try_count += 1
            else:
                # removed fine
                return

        # we try cleaning up again later at the end of the run
        self.cleanup_dir_list.append(directory)

    def clean_temp_dirs(self, name):
        # We don't want to delete the profile when running check-interactive
        # or check-one.
        if self.profileDir and not self.interactive and not self.singleFile:
            self.cleanupDir(self.profileDir, name)

        self.cleanupDir(self.tempDir, name)

    def parse_output(self, output):
        """Parses process output for structured messages and saves output as it is
        read. Sets self.has_failure_output in case of evidence of a failure"""
        for line_string in output.splitlines():
            self.process_line(line_string)

        if self.saw_proc_start and not self.saw_proc_end:
            self.has_failure_output = True

    def fix_text_output(self, line):
        line = cleanup_encoding(line)
        if self.stack_fixer_function is not None:
            line = self.stack_fixer_function(line)

        if isinstance(line, bytes):
            line = line.decode("utf-8")
        return line

    def log_line(self, line):
        """Log a line of output (either a parser json object or text output from
        the test process"""
        if isinstance(line, six.string_types) or isinstance(line, bytes):
            line = self.fix_text_output(line).rstrip("\r\n")
            self.log.process_output(self.proc_ident, line, command=self.command)
        else:
            if "message" in line:
                line["message"] = self.fix_text_output(line["message"])
            if "xpcshell_process" in line:
                line["thread"] = " ".join(
                    [current_thread().name, line["xpcshell_process"]]
                )
            else:
                line["thread"] = current_thread().name
            self.log.log_raw(line)

    def log_full_output(self):
        """Logs any buffered output from the test process, and clears the buffer."""
        if not self.output_lines:
            return
        self.log.info(">>>>>>>")
        for line in self.output_lines:
            self.log_line(line)
        self.log.info("<<<<<<<")
        self.output_lines = []

    def report_message(self, message):
        """Stores or logs a json log message in mozlog format."""
        if self.verbose:
            self.log_line(message)
        else:
            self.output_lines.append(message)

    def process_line(self, line_string):
        """Parses a single line of output, determining its significance and
        reporting a message.
        """
        if isinstance(line_string, bytes):
            # Transform binary to string representation
            line_string = line_string.decode(sys.stdout.encoding, errors="replace")

        if not line_string.strip():
            return

        try:
            line_object = json.loads(line_string)
            if not isinstance(line_object, dict):
                self.report_message(line_string)
                return
        except ValueError:
            self.report_message(line_string)
            return

        if (
            "action" not in line_object
            or line_object["action"] not in EXPECTED_LOG_ACTIONS
        ):
            # The test process output JSON.
            self.report_message(line_string)
            return

        if line_object["action"] == "crash_reporter_init":
            self.saw_crash_reporter_init = True
            return

        action = line_object["action"]

        self.has_failure_output = (
            self.has_failure_output
            or "expected" in line_object
            or action == "log"
            and line_object["level"] == "ERROR"
        )

        self.report_message(line_object)

        if action == "log" and line_object["message"] == "CHILD-TEST-STARTED":
            self.saw_proc_start = True
        elif action == "log" and line_object["message"] == "CHILD-TEST-COMPLETED":
            self.saw_proc_end = True

    def run_test(self):
        """Run an individual xpcshell test."""
        global gotSIGINT

        name = self.test_object["id"]
        path = self.test_object["path"]
        group = get_full_group_name(self.test_object)

        # Check for skipped tests
        if "disabled" in self.test_object:
            message = self.test_object["disabled"]
            if not message:
                message = "disabled from xpcshell manifest"
            self.log.test_start(name, group=group)
            self.log.test_end(name, "SKIP", message=message, group=group)

            self.retry = False
            self.keep_going = True
            return

        # Check for known-fail tests
        expect_pass = self.test_object["expected"] == "pass"

        # By default self.appPath will equal the gre dir. If specified in the
        # xpcshell.toml file, set a different app dir for this test.
        if self.app_dir_key and self.app_dir_key in self.test_object:
            rel_app_dir = self.test_object[self.app_dir_key]
            rel_app_dir = os.path.join(self.xrePath, rel_app_dir)
            self.appPath = os.path.abspath(rel_app_dir)
        else:
            self.appPath = None

        test_dir = os.path.dirname(path)

        # Create a profile and a temp dir that the JS harness can stick
        # a profile and temporary data in
        self.profileDir = self.setupProfileDir()
        self.tempDir = self.setupTempDir()
        self.mozInfoJSPath = self.setupMozinfoJS()

        # Setup per-manifest prefs and write them into the tempdir.
        self.prefsFile = self.updateTestPrefsFile()

        # The order of the command line is important:
        # 1) Arguments for xpcshell itself
        self.command = self.buildXpcsCmd()

        # 2) Arguments for the head files
        self.command.extend(self.buildCmdHead())

        # 3) Arguments for the test file
        self.command.extend(self.buildCmdTestFile(path))
        self.command.extend(["-e", 'const _TEST_NAME = "%s";' % name])

        # 4) Arguments for code coverage
        if self.jscovdir:
            self.command.extend(
                ["-e", 'const _JSCOV_DIR = "%s";' % self.jscovdir.replace("\\", "/")]
            )

        # 5) Runtime arguments
        if "debug" in self.test_object:
            self.command.append("-d")

        self.command.extend(self.xpcsRunArgs)

        if self.test_object.get("dmd") == "true":
            self.env["PYTHON"] = sys.executable
            self.env["BREAKPAD_SYMBOLS_PATH"] = self.symbolsPath

        if self.test_object.get("snap") == "true":
            self.env["SNAP_NAME"] = "firefox"
            self.env["SNAP_INSTANCE_NAME"] = "firefox"

        if self.test_object.get("subprocess") == "true":
            self.env["PYTHON"] = sys.executable

        if (
            self.test_object.get("headless", "true" if self.headless else None)
            == "true"
        ):
            self.env["MOZ_HEADLESS"] = "1"
            self.env["DISPLAY"] = "77"  # Set a fake display.

        testTimeoutInterval = self.harness_timeout
        # Allow a test to request a multiple of the timeout if it is expected to take long
        if "requesttimeoutfactor" in self.test_object:
            testTimeoutInterval *= int(self.test_object["requesttimeoutfactor"])

        testTimer = None
        if not self.interactive and not self.debuggerInfo and not self.jsDebuggerInfo:
            testTimer = Timer(testTimeoutInterval, lambda: self.testTimeout(proc))
            testTimer.start()

        proc = None
        process_output = None

        try:
            self.log.test_start(name, group=group)
            if self.verbose:
                self.logCommand(name, self.command, test_dir)

            proc = self.launchProcess(
                self.command,
                stdout=self.pStdout,
                stderr=self.pStderr,
                env=self.env,
                cwd=test_dir,
                timeout=testTimeoutInterval,
                test_name=name,
            )

            if hasattr(proc, "pid"):
                self.proc_ident = proc.pid
            else:
                # On mobile, "proc" is just a file.
                self.proc_ident = name

            if self.interactive:
                self.log.info("%s | Process ID: %d" % (name, self.proc_ident))

            # Communicate returns a tuple of (stdout, stderr), however we always
            # redirect stderr to stdout, so the second element is ignored.
            process_output, _ = self.communicate(proc)

            if self.interactive:
                # Not sure what else to do here...
                self.keep_going = True
                return

            if testTimer:
                testTimer.cancel()

            if process_output:
                # For the remote case, stdout is not yet depleted, so we parse
                # it here all at once.
                self.parse_output(process_output)

            return_code = self.getReturnCode(proc)

            # TSan'd processes return 66 if races are detected.  This isn't
            # good in the sense that there's no way to distinguish between
            # a process that would normally have returned zero but has races,
            # and a race-free process that returns 66.  But I don't see how
            # to do better.  This ambiguity is at least constrained to the
            # with-TSan case.  It doesn't affect normal builds.
            #
            # This also assumes that the magic value 66 isn't overridden by
            # a TSAN_OPTIONS=exitcode=<number> environment variable setting.
            #
            TSAN_EXIT_CODE_WITH_RACES = 66

            return_code_ok = return_code == 0 or (
                self.usingTSan and return_code == TSAN_EXIT_CODE_WITH_RACES
            )

            # Due to the limitation on the remote xpcshell test, the process
            # return code does not represent the process crash.
            # If crash_reporter_init log has not been seen and the return code
            # is 0, it means the process crashed before setting up the crash
            # reporter.
            #
            # NOTE: Crash reporter is not enabled on some configuration, such
            #       as ASAN and TSAN. Those configuration shouldn't be using
            #       remote xpcshell test, and the crash should be caught by
            #       the process return code.
            # NOTE: self.saw_crash_reporter_init is False also when adb failed
            #       to launch process, and in that case the return code is
            #       not 0.
            #       (see launchProcess in remotexpcshelltests.py)
            ended_before_crash_reporter_init = (
                return_code_ok
                and self.usingCrashReporter
                and not self.saw_crash_reporter_init
            )

            passed = (
                (not self.has_failure_output)
                and not ended_before_crash_reporter_init
                and return_code_ok
            )

            status = "PASS" if passed else "FAIL"
            expected = "PASS" if expect_pass else "FAIL"
            message = "xpcshell return code: %d" % return_code

            if self.timedout:
                return

            if status != expected or ended_before_crash_reporter_init:
                if ended_before_crash_reporter_init:
                    self.log.test_end(
                        name,
                        "CRASH",
                        expected=expected,
                        message="Test ended before setting up the crash reporter",
                        group=group,
                    )
                elif self.retry:
                    self.log.test_end(
                        name,
                        status,
                        expected=status,
                        message="Test failed or timed out, will retry",
                        group=group,
                    )
                    self.clean_temp_dirs(path)
                    if self.verboseIfFails and not self.verbose:
                        self.log_full_output()
                    return
                else:
                    self.log.test_end(
                        name, status, expected=expected, message=message, group=group
                    )
                self.log_full_output()

                self.failCount += 1

                if self.failureManifest:
                    with open(self.failureManifest, "a") as f:
                        f.write("[%s]\n" % self.test_object["path"])
                        for k, v in self.test_object.items():
                            f.write("%s = %s\n" % (k, v))

            else:
                # If TSan reports a race, dump the output, else we can't
                # diagnose what the problem was.  See comments above about
                # the significance of TSAN_EXIT_CODE_WITH_RACES.
                if self.usingTSan and return_code == TSAN_EXIT_CODE_WITH_RACES:
                    self.log_full_output()

                self.log.test_end(
                    name, status, expected=expected, message=message, group=group
                )
                if self.verbose:
                    self.log_full_output()

                self.retry = False

                if expect_pass:
                    self.passCount = 1
                else:
                    self.todoCount = 1

            if self.checkForCrashes(self.tempDir, self.symbolsPath, test_name=name):
                if self.retry:
                    self.clean_temp_dirs(path)
                    return

                # If we assert during shutdown there's a chance the test has passed
                # but we haven't logged full output, so do so here.
                self.log_full_output()
                self.failCount = 1

            if self.logfiles and process_output:
                self.createLogFile(name, process_output)

        finally:
            self.postCheck(proc)
            self.clean_temp_dirs(path)

        if gotSIGINT:
            self.log.error("Received SIGINT (control-C) during test execution")
            if self.keep_going:
                gotSIGINT = False
            else:
                self.keep_going = False
                return

        self.keep_going = True


class XPCShellTests(object):
    def __init__(self, log=None):
        """Initializes node status and logger."""
        self.log = log
        self.harness_timeout = HARNESS_TIMEOUT
        self.nodeProc = {}
        self.http3Server = None
        self.conditioned_profile_dir = None

    def getTestManifest(self, manifest):
        if isinstance(manifest, TestManifest):
            return manifest
        elif manifest is not None:
            manifest = os.path.normpath(os.path.abspath(manifest))
            if os.path.isfile(manifest):
                return TestManifest([manifest], strict=True)
            else:
                toml_path = os.path.join(manifest, "xpcshell.toml")
        else:
            toml_path = os.path.join(SCRIPT_DIR, "tests", "xpcshell.toml")

        if os.path.exists(toml_path):
            return TestManifest([toml_path], strict=True)
        else:
            self.log.error(
                "Failed to find manifest at %s; use --manifest "
                "to set path explicitly." % toml_path
            )
            sys.exit(1)

    def normalizeTest(self, root, test_object):
        path = test_object.get("file_relpath", test_object["relpath"])
        if "dupe-manifest" in test_object and "ancestor_manifest" in test_object:
            test_object["id"] = "%s:%s" % (
                os.path.basename(test_object["ancestor_manifest"]),
                path,
            )
        else:
            test_object["id"] = path

        if root:
            test_object["manifest"] = os.path.relpath(test_object["manifest"], root)

        if os.sep != "/":
            for key in ("id", "manifest"):
                test_object[key] = test_object[key].replace(os.sep, "/")

        return test_object

    def buildTestList(self, test_tags=None, test_paths=None, verify=False):
        """Reads the xpcshell.toml manifest and set self.alltests to an array.

        Given the parameters, this method compiles a list of tests to be run
        that matches the criteria set by parameters.

        If any chunking of tests are to occur, it is also done in this method.

        If no tests are added to the list of tests to be run, an error
        is logged. A sys.exit() signal is sent to the caller.

        Args:
            test_tags (list, optional): list of strings.
            test_paths (list, optional): list of strings derived from the command
                                         line argument provided by user, specifying
                                         tests to be run.
            verify (bool, optional): boolean value.
        """
        if test_paths is None:
            test_paths = []

        mp = self.getTestManifest(self.manifest)

        root = mp.rootdir
        if build and not root:
            root = build.topsrcdir
        normalize = partial(self.normalizeTest, root)

        filters = []
        if test_tags:
            filters.append(tags(test_tags))

        path_filter = None
        if test_paths:
            path_filter = pathprefix(test_paths)
            filters.append(path_filter)

        noDefaultFilters = False
        if self.runFailures:
            filters.append(failures(self.runFailures))
            noDefaultFilters = True

        if self.totalChunks > 1:
            filters.append(chunk_by_slice(self.thisChunk, self.totalChunks))
        try:
            self.alltests = list(
                map(
                    normalize,
                    mp.active_tests(
                        filters=filters,
                        noDefaultFilters=noDefaultFilters,
                        **mozinfo.info,
                    ),
                )
            )
        except TypeError:
            sys.stderr.write("*** offending mozinfo.info: %s\n" % repr(mozinfo.info))
            raise

        if path_filter and path_filter.missing:
            self.log.warning(
                "The following path(s) didn't resolve any tests:\n  {}".format(
                    "  \n".join(sorted(path_filter.missing))
                )
            )

        if len(self.alltests) == 0:
            if (
                test_paths
                and path_filter.missing == set(test_paths)
                and os.environ.get("MOZ_AUTOMATION") == "1"
            ):
                # This can happen in CI when a manifest doesn't exist due to a
                # build config variable in moz.build traversal. Don't generate
                # an error in this case. Adding a todo count avoids mozharness
                # raising an error.
                self.todoCount += len(path_filter.missing)
            else:
                self.log.error(
                    "no tests to run using specified "
                    "combination of filters: {}".format(mp.fmt_filters())
                )
                sys.exit(1)

        if len(self.alltests) == 1 and not verify:
            self.singleFile = os.path.basename(self.alltests[0]["path"])
        else:
            self.singleFile = None

        if self.dump_tests:
            self.dump_tests = os.path.expanduser(self.dump_tests)
            assert os.path.exists(os.path.dirname(self.dump_tests))
            with open(self.dump_tests, "w") as dumpFile:
                dumpFile.write(json.dumps({"active_tests": self.alltests}))

            self.log.info("Dumping active_tests to %s file." % self.dump_tests)
            sys.exit()

    def setAbsPath(self):
        """
        Set the absolute path for xpcshell and xrepath. These 3 variables
        depend on input from the command line and we need to allow for absolute paths.
        This function is overloaded for a remote solution as os.path* won't work remotely.
        """
        self.testharnessdir = os.path.dirname(os.path.abspath(__file__))
        self.headJSPath = self.testharnessdir.replace("\\", "/") + "/head.js"
        if self.xpcshell is not None:
            self.xpcshell = os.path.abspath(self.xpcshell)

        if self.app_binary is not None:
            self.app_binary = os.path.abspath(self.app_binary)

        if self.xrePath is None:
            binary_path = self.app_binary or self.xpcshell
            self.xrePath = os.path.dirname(binary_path)
            if mozinfo.isMac:
                # Check if we're run from an OSX app bundle and override
                # self.xrePath if we are.
                appBundlePath = os.path.join(
                    os.path.dirname(os.path.dirname(self.xpcshell)), "Resources"
                )
                if os.path.exists(os.path.join(appBundlePath, "application.ini")):
                    self.xrePath = appBundlePath
        else:
            self.xrePath = os.path.abspath(self.xrePath)

        if self.mozInfo is None:
            self.mozInfo = os.path.join(self.testharnessdir, "mozinfo.json")

    def buildPrefsFile(self, extraPrefs):
        # Create the prefs.js file

        # In test packages used in CI, the profile_data directory is installed
        # in the SCRIPT_DIR.
        profile_data_dir = os.path.join(SCRIPT_DIR, "profile_data")
        # If possible, read profile data from topsrcdir. This prevents us from
        # requiring a re-build to pick up newly added extensions in the
        # <profile>/extensions directory.
        if build:
            path = os.path.join(build.topsrcdir, "testing", "profiles")
            if os.path.isdir(path):
                profile_data_dir = path
        # Still not found? Look for testing/profiles relative to testing/xpcshell.
        if not os.path.isdir(profile_data_dir):
            path = os.path.abspath(os.path.join(SCRIPT_DIR, "..", "profiles"))
            if os.path.isdir(path):
                profile_data_dir = path

        with open(os.path.join(profile_data_dir, "profiles.json"), "r") as fh:
            base_profiles = json.load(fh)["xpcshell"]

        # values to use when interpolating preferences
        interpolation = {
            "server": "dummyserver",
        }

        profile = Profile(profile=self.tempDir, restore=False)
        prefsFile = os.path.join(profile.profile, "user.js")

        # Empty the user.js file in case the file existed before.
        with open(prefsFile, "w"):
            pass

        for name in base_profiles:
            path = os.path.join(profile_data_dir, name)
            profile.merge(path, interpolation=interpolation)

        # add command line prefs
        prefs = parse_preferences(extraPrefs)
        profile.set_preferences(prefs)

        self.prefsFile = prefsFile
        return prefs

    def buildCoreEnvironment(self):
        """
        Add environment variables likely to be used across all platforms, including
        remote systems.
        """
        # Make assertions fatal
        self.env["XPCOM_DEBUG_BREAK"] = "stack-and-abort"
        # Crash reporting interferes with debugging
        if not self.debuggerInfo:
            self.env["MOZ_CRASHREPORTER"] = "1"
        # Don't launch the crash reporter client
        self.env["MOZ_CRASHREPORTER_NO_REPORT"] = "1"
        # Don't permit remote connections by default.
        # MOZ_DISABLE_NONLOCAL_CONNECTIONS can be set to "0" to temporarily
        # enable non-local connections for the purposes of local testing.
        # Don't override the user's choice here.  See bug 1049688.
        self.env.setdefault("MOZ_DISABLE_NONLOCAL_CONNECTIONS", "1")
        if self.mozInfo.get("topsrcdir") is not None:
            self.env["MOZ_DEVELOPER_REPO_DIR"] = self.mozInfo["topsrcdir"]
        if self.mozInfo.get("topobjdir") is not None:
            self.env["MOZ_DEVELOPER_OBJ_DIR"] = self.mozInfo["topobjdir"]

        # Disable the content process sandbox for the xpcshell tests. They
        # currently attempt to do things like bind() sockets, which is not
        # compatible with the sandbox.
        self.env["MOZ_DISABLE_CONTENT_SANDBOX"] = "1"
        if os.getenv("MOZ_FETCHES_DIR", None):
            self.env["MOZ_FETCHES_DIR"] = os.getenv("MOZ_FETCHES_DIR", None)

        if self.mozInfo.get("socketprocess_networking"):
            self.env["MOZ_FORCE_USE_SOCKET_PROCESS"] = "1"
        else:
            self.env["MOZ_DISABLE_SOCKET_PROCESS"] = "1"

    def buildEnvironment(self):
        """
        Create and returns a dictionary of self.env to include all the appropriate env
        variables and values. On a remote system, we overload this to set different
        values and are missing things like os.environ and PATH.
        """
        self.env = dict(os.environ)
        self.buildCoreEnvironment()
        if sys.platform == "win32":
            self.env["PATH"] = self.env["PATH"] + ";" + self.xrePath
        elif sys.platform in ("os2emx", "os2knix"):
            os.environ["BEGINLIBPATH"] = self.xrePath + ";" + self.env["BEGINLIBPATH"]
            os.environ["LIBPATHSTRICT"] = "T"
        elif sys.platform == "osx" or sys.platform == "darwin":
            self.env["DYLD_LIBRARY_PATH"] = os.path.join(
                os.path.dirname(self.xrePath), "MacOS"
            )
        else:  # unix or linux?
            if "LD_LIBRARY_PATH" not in self.env or self.env["LD_LIBRARY_PATH"] is None:
                self.env["LD_LIBRARY_PATH"] = self.xrePath
            else:
                self.env["LD_LIBRARY_PATH"] = ":".join(
                    [self.xrePath, self.env["LD_LIBRARY_PATH"]]
                )

        usingASan = "asan" in self.mozInfo and self.mozInfo["asan"]
        usingTSan = "tsan" in self.mozInfo and self.mozInfo["tsan"]
        if usingASan or usingTSan:
            # symbolizer support
            if "ASAN_SYMBOLIZER_PATH" in self.env and os.path.isfile(
                self.env["ASAN_SYMBOLIZER_PATH"]
            ):
                llvmsym = self.env["ASAN_SYMBOLIZER_PATH"]
            else:
                llvmsym = os.path.join(
                    self.xrePath, "llvm-symbolizer" + self.mozInfo["bin_suffix"]
                )
            if os.path.isfile(llvmsym):
                if usingASan:
                    self.env["ASAN_SYMBOLIZER_PATH"] = llvmsym
                else:
                    oldTSanOptions = self.env.get("TSAN_OPTIONS", "")
                    self.env["TSAN_OPTIONS"] = "external_symbolizer_path={} {}".format(
                        llvmsym, oldTSanOptions
                    )
                self.log.info("runxpcshelltests.py | using symbolizer at %s" % llvmsym)
            else:
                self.log.error(
                    "TEST-UNEXPECTED-FAIL | runxpcshelltests.py | "
                    "Failed to find symbolizer at %s" % llvmsym
                )

        return self.env

    def getPipes(self):
        """
        Determine the value of the stdout and stderr for the test.
        Return value is a list (pStdout, pStderr).
        """
        if self.interactive:
            pStdout = None
            pStderr = None
        else:
            if self.debuggerInfo and self.debuggerInfo.interactive:
                pStdout = None
                pStderr = None
            else:
                if sys.platform == "os2emx":
                    pStdout = None
                else:
                    pStdout = PIPE
                pStderr = STDOUT
        return pStdout, pStderr

    def verifyDirPath(self, dirname):
        """
        Simple wrapper to get the absolute path for a given directory name.
        On a remote system, we need to overload this to work on the remote filesystem.
        """
        return os.path.abspath(dirname)

    def trySetupNode(self):
        """
        Run node for HTTP/2 tests, if available, and updates mozinfo as appropriate.
        """
        if os.getenv("MOZ_ASSUME_NODE_RUNNING", None):
            self.log.info("Assuming required node servers are already running")
            if not os.getenv("MOZHTTP2_PORT", None):
                self.log.warning(
                    "MOZHTTP2_PORT environment variable not set. "
                    "Tests requiring http/2 will fail."
                )
            return

        # We try to find the node executable in the path given to us by the user in
        # the MOZ_NODE_PATH environment variable
        nodeBin = os.getenv("MOZ_NODE_PATH", None)
        if not nodeBin and build:
            nodeBin = build.substs.get("NODEJS")
        if not nodeBin:
            self.log.warning(
                "MOZ_NODE_PATH environment variable not set. "
                "Tests requiring http/2 will fail."
            )
            return

        if not os.path.exists(nodeBin) or not os.path.isfile(nodeBin):
            error = "node not found at MOZ_NODE_PATH %s" % (nodeBin)
            self.log.error(error)
            raise IOError(error)

        self.log.info("Found node at %s" % (nodeBin,))

        def read_streams(name, proc, pipe):
            output = "stdout" if pipe == proc.stdout else "stderr"
            for line in iter(pipe.readline, ""):
                self.log.info("node %s [%s] %s" % (name, output, line))

        def startServer(name, serverJs):
            if not os.path.exists(serverJs):
                error = "%s not found at %s" % (name, serverJs)
                self.log.error(error)
                raise IOError(error)

            # OK, we found our server, let's try to get it running
            self.log.info("Found %s at %s" % (name, serverJs))
            try:
                # We pipe stdin to node because the server will exit when its
                # stdin reaches EOF
                with popenCleanupHack():
                    process = Popen(
                        [nodeBin, serverJs],
                        stdin=PIPE,
                        stdout=PIPE,
                        stderr=PIPE,
                        env=self.env,
                        cwd=os.getcwd(),
                        universal_newlines=True,
                        start_new_session=True,
                    )
                self.nodeProc[name] = process

                # Check to make sure the server starts properly by waiting for it to
                # tell us it's started
                msg = process.stdout.readline()
                if "server listening" in msg:
                    searchObj = re.search(
                        r"HTTP2 server listening on ports ([0-9]+),([0-9]+)", msg, 0
                    )
                    if searchObj:
                        self.env["MOZHTTP2_PORT"] = searchObj.group(1)
                        self.env["MOZNODE_EXEC_PORT"] = searchObj.group(2)
                t1 = Thread(
                    target=read_streams,
                    args=(name, process, process.stdout),
                    daemon=True,
                )
                t1.start()
                t2 = Thread(
                    target=read_streams,
                    args=(name, process, process.stderr),
                    daemon=True,
                )
                t2.start()
            except OSError as e:
                # This occurs if the subprocess couldn't be started
                self.log.error("Could not run %s server: %s" % (name, str(e)))
                raise

        myDir = os.path.split(os.path.abspath(__file__))[0]
        startServer("moz-http2", os.path.join(myDir, "moz-http2", "moz-http2.js"))

    def shutdownNode(self):
        """
        Shut down our node process, if it exists
        """
        for name, proc in six.iteritems(self.nodeProc):
            self.log.info("Node %s server shutting down ..." % name)
            if proc.poll() is not None:
                self.log.info("Node server %s already dead %s" % (name, proc.poll()))
            elif sys.platform != "win32":
                # Kill process and all its spawned children.
                os.killpg(proc.pid, signal.SIGTERM)
            else:
                proc.terminate()

        self.nodeProc = {}

    def startHttp3Server(self):
        """
        Start a Http3 test server.
        """
        binSuffix = ""
        if sys.platform == "win32":
            binSuffix = ".exe"
        http3ServerPath = self.http3ServerPath
        if not http3ServerPath:
            http3ServerPath = os.path.join(
                SCRIPT_DIR, "http3server", "http3server" + binSuffix
            )
            if build:
                http3ServerPath = os.path.join(
                    build.topobjdir, "dist", "bin", "http3server" + binSuffix
                )
        dbPath = os.path.join(SCRIPT_DIR, "http3server", "http3serverDB")
        if build:
            dbPath = os.path.join(build.topsrcdir, "netwerk", "test", "http3serverDB")
        options = {}
        options["http3ServerPath"] = http3ServerPath
        options["profilePath"] = dbPath
        options["isMochitest"] = False
        options["isWin"] = sys.platform == "win32"
        serverEnv = self.env.copy()
        serverLog = self.env.get("MOZHTTP3_SERVER_LOG")
        if serverLog is not None:
            serverEnv["RUST_LOG"] = serverLog
        self.http3Server = Http3Server(options, serverEnv, self.log)
        self.http3Server.start()
        for key, value in self.http3Server.ports().items():
            self.env[key] = value
        self.env["MOZHTTP3_ECH"] = self.http3Server.echConfig()

    def shutdownHttp3Server(self):
        if self.http3Server is None:
            return
        self.http3Server.stop()
        self.http3Server = None

    def buildXpcsRunArgs(self):
        """
        Add arguments to run the test or make it interactive.
        """
        if self.interactive:
            self.xpcsRunArgs = [
                "-e",
                'print("To start the test, type |_execute_test();|.");',
                "-i",
            ]
        else:
            self.xpcsRunArgs = ["-e", "_execute_test(); quit(0);"]

    def addTestResults(self, test):
        self.passCount += test.passCount
        self.failCount += test.failCount
        self.todoCount += test.todoCount

    def updateMozinfo(self, prefs, options):
        # Handle filenames in mozInfo
        if not isinstance(self.mozInfo, dict):
            mozInfoFile = self.mozInfo
            if not os.path.isfile(mozInfoFile):
                self.log.error(
                    "Error: couldn't find mozinfo.json at '%s'. Perhaps you "
                    "need to use --build-info-json?" % mozInfoFile
                )
                return False
            self.mozInfo = json.load(open(mozInfoFile))

        # mozinfo.info is used as kwargs.  Some builds are done with
        # an older Python that can't handle Unicode keys in kwargs.
        # All of the keys in question should be ASCII.
        fixedInfo = {}
        for k, v in self.mozInfo.items():
            if isinstance(k, bytes):
                k = k.decode("utf-8")
            fixedInfo[k] = v
        self.mozInfo = fixedInfo

        self.mozInfo["fission"] = prefs.get("fission.autostart", True)
        self.mozInfo["sessionHistoryInParent"] = self.mozInfo[
            "fission"
        ] or not prefs.get("fission.disableSessionHistoryInParent", False)

        self.mozInfo["serviceworker_e10s"] = True

        self.mozInfo["verify"] = options.get("verify", False)

        self.mozInfo["socketprocess_networking"] = prefs.get(
            "network.http.network_access_on_socket_process.enabled", False
        )

        self.mozInfo["condprof"] = options.get("conditionedProfile", False)

        self.mozInfo["msix"] = options.get(
            "app_binary"
        ) is not None and "WindowsApps" in options.get("app_binary", "")

        self.mozInfo["is_ubuntu"] = "Ubuntu" in platform.version()

        mozinfo.update(self.mozInfo)

        return True

    @property
    def conditioned_profile_copy(self):
        """Returns a copy of the original conditioned profile that was created."""
        condprof_copy = os.path.join(tempfile.mkdtemp(), "profile")
        shutil.copytree(
            self.conditioned_profile_dir,
            condprof_copy,
            ignore=shutil.ignore_patterns("lock"),
        )
        self.log.info("Created a conditioned-profile copy: %s" % condprof_copy)
        return condprof_copy

    def downloadConditionedProfile(self, profile_scenario, app):
        from condprof.client import get_profile
        from condprof.util import get_current_platform, get_version

        if self.conditioned_profile_dir:
            # We already have a directory, so provide a copy that
            # will get deleted after it's done with
            return self.conditioned_profile_dir

        # create a temp file to help ensure uniqueness
        temp_download_dir = tempfile.mkdtemp()
        self.log.info(
            "Making temp_download_dir from inside get_conditioned_profile {}".format(
                temp_download_dir
            )
        )
        # call condprof's client API to yield our platform-specific
        # conditioned-profile binary
        platform = get_current_platform()
        version = None
        if isinstance(app, str):
            version = get_version(app)

        if not profile_scenario:
            profile_scenario = "settled"
        try:
            cond_prof_target_dir = get_profile(
                temp_download_dir,
                platform,
                profile_scenario,
                repo="mozilla-central",
                version=version,
                retries=2,
            )
        except Exception:
            if version is None:
                # any other error is a showstopper
                self.log.critical("Could not get the conditioned profile")
                traceback.print_exc()
                raise
            version = None
            try:
                self.log.info("Retrying a profile with no version specified")
                cond_prof_target_dir = get_profile(
                    temp_download_dir,
                    platform,
                    profile_scenario,
                    repo="mozilla-central",
                    version=version,
                )
            except Exception:
                self.log.critical("Could not get the conditioned profile")
                traceback.print_exc()
                raise

        # now get the full directory path to our fetched conditioned profile
        self.conditioned_profile_dir = os.path.join(
            temp_download_dir, cond_prof_target_dir
        )
        if not os.path.exists(cond_prof_target_dir):
            self.log.critical(
                "Can't find target_dir {}, from get_profile()"
                "temp_download_dir {}, platform {}, scenario {}".format(
                    cond_prof_target_dir, temp_download_dir, platform, profile_scenario
                )
            )
            raise OSError

        self.log.info(
            "Original self.conditioned_profile_dir is now set: {}".format(
                self.conditioned_profile_dir
            )
        )
        return self.conditioned_profile_copy

    def runSelfTest(self):
        import unittest

        import selftest

        this = self

        class XPCShellTestsTests(selftest.XPCShellTestsTests):
            def __init__(self, name):
                unittest.TestCase.__init__(self, name)
                self.testing_modules = this.testingModulesDir
                self.xpcshellBin = this.xpcshell
                self.app_binary = this.app_binary
                self.utility_path = this.utility_path
                self.symbols_path = this.symbolsPath

        old_info = dict(mozinfo.info)
        try:
            suite = unittest.TestLoader().loadTestsFromTestCase(XPCShellTestsTests)
            return unittest.TextTestRunner(verbosity=2).run(suite).wasSuccessful()
        finally:
            # The self tests modify mozinfo, so we need to reset it.
            mozinfo.info.clear()
            mozinfo.update(old_info)

    def runTests(self, options, testClass=XPCShellTestThread, mobileArgs=None):
        """
        Run xpcshell tests.
        """
        global gotSIGINT

        # Number of times to repeat test(s) in --verify mode
        VERIFY_REPEAT = 10

        if isinstance(options, Namespace):
            options = vars(options)

        # Try to guess modules directory.
        # This somewhat grotesque hack allows the buildbot machines to find the
        # modules directory without having to configure the buildbot hosts. This
        # code path should never be executed in local runs because the build system
        # should always set this argument.
        if not options.get("testingModulesDir"):
            possible = os.path.join(here, os.path.pardir, "modules")

            if os.path.isdir(possible):
                testingModulesDir = possible

        if options.get("rerun_failures"):
            if os.path.exists(options.get("failure_manifest")):
                rerun_manifest = os.path.join(
                    os.path.dirname(options["failure_manifest"]), "rerun.toml"
                )
                shutil.copyfile(options["failure_manifest"], rerun_manifest)
                os.remove(options["failure_manifest"])
            else:
                self.log.error("No failures were found to re-run.")
                sys.exit(1)

        if options.get("testingModulesDir"):
            # The resource loader expects native paths. Depending on how we were
            # invoked, a UNIX style path may sneak in on Windows. We try to
            # normalize that.
            testingModulesDir = os.path.normpath(options["testingModulesDir"])

            if not os.path.isabs(testingModulesDir):
                testingModulesDir = os.path.abspath(testingModulesDir)

            if not testingModulesDir.endswith(os.path.sep):
                testingModulesDir += os.path.sep

        self.debuggerInfo = None

        if options.get("debugger"):
            self.debuggerInfo = mozdebug.get_debugger_info(
                options.get("debugger"),
                options.get("debuggerArgs"),
                options.get("debuggerInteractive"),
            )

        self.jsDebuggerInfo = None
        if options.get("jsDebugger"):
            # A namedtuple let's us keep .port instead of ['port']
            JSDebuggerInfo = namedtuple("JSDebuggerInfo", ["port"])
            self.jsDebuggerInfo = JSDebuggerInfo(port=options["jsDebuggerPort"])

        self.app_binary = options.get("app_binary")
        self.xpcshell = options.get("xpcshell")
        self.http3ServerPath = options.get("http3server")
        self.xrePath = options.get("xrePath")
        self.utility_path = options.get("utility_path")
        self.appPath = options.get("appPath")
        self.symbolsPath = options.get("symbolsPath")
        self.tempDir = os.path.normpath(options.get("tempDir") or tempfile.gettempdir())
        self.manifest = options.get("manifest")
        self.dump_tests = options.get("dump_tests")
        self.interactive = options.get("interactive")
        self.verbose = options.get("verbose")
        self.verboseIfFails = options.get("verboseIfFails")
        self.keepGoing = options.get("keepGoing")
        self.logfiles = options.get("logfiles")
        self.totalChunks = options.get("totalChunks", 1)
        self.thisChunk = options.get("thisChunk")
        self.profileName = options.get("profileName") or "xpcshell"
        self.mozInfo = options.get("mozInfo")
        self.testingModulesDir = testingModulesDir
        self.sequential = options.get("sequential")
        self.failure_manifest = options.get("failure_manifest")
        self.threadCount = options.get("threadCount") or NUM_THREADS
        self.jscovdir = options.get("jscovdir")
        self.headless = options.get("headless")
        self.runFailures = options.get("runFailures")
        self.timeoutAsPass = options.get("timeoutAsPass")
        self.crashAsPass = options.get("crashAsPass")
        self.conditionedProfile = options.get("conditionedProfile")
        self.repeat = options.get("repeat", 0)

        self.testCount = 0
        self.passCount = 0
        self.failCount = 0
        self.todoCount = 0

        if self.conditionedProfile:
            self.conditioned_profile_dir = self.downloadConditionedProfile(
                "full", self.appPath
            )
            options["self_test"] = False
            if not options["test_tags"]:
                options["test_tags"] = []
            options["test_tags"].append("condprof")

        self.setAbsPath()

        eprefs = options.get("extraPrefs") or []
        # enable fission by default
        if options.get("disableFission"):
            eprefs.append("fission.autostart=false")
        else:
            # should be by default, just in case
            eprefs.append("fission.autostart=true")

        prefs = self.buildPrefsFile(eprefs)
        self.buildXpcsRunArgs()

        self.event = Event()

        if not self.updateMozinfo(prefs, options):
            return False

        self.log.info(
            "These variables are available in the mozinfo environment and "
            "can be used to skip tests conditionally:"
        )
        for info in sorted(self.mozInfo.items(), key=lambda item: item[0]):
            self.log.info("    {key}: {value}".format(key=info[0], value=info[1]))

        if options.get("self_test"):
            if not self.runSelfTest():
                return False

        if (
            ("tsan" in self.mozInfo and self.mozInfo["tsan"])
            or ("asan" in self.mozInfo and self.mozInfo["asan"])
        ) and not options.get("threadCount"):
            # TSan/ASan require significantly more memory, so reduce the amount of parallel
            # tests we run to avoid OOMs and timeouts. We always keep a minimum of 2 for
            # non-sequential execution.
            # pylint --py3k W1619
            self.threadCount = max(self.threadCount / 2, 2)

        self.stack_fixer_function = None
        if self.utility_path and os.path.exists(self.utility_path):
            self.stack_fixer_function = get_stack_fixer_function(
                self.utility_path, self.symbolsPath
            )

        # buildEnvironment() needs mozInfo, so we call it after mozInfo is initialized.
        self.buildEnvironment()

        # The appDirKey is a optional entry in either the default or individual test
        # sections that defines a relative application directory for test runs. If
        # defined we pass 'grePath/$appDirKey' for the -a parameter of the xpcshell
        # test harness.
        appDirKey = None
        if "appname" in self.mozInfo:
            appDirKey = self.mozInfo["appname"] + "-appdir"

        # We have to do this before we run tests that depend on having the node
        # http/2 server.
        self.trySetupNode()

        self.startHttp3Server()

        pStdout, pStderr = self.getPipes()

        self.buildTestList(
            options.get("test_tags"), options.get("testPaths"), options.get("verify")
        )
        if self.singleFile:
            self.sequential = True

        if options.get("shuffle"):
            random.shuffle(self.alltests)

        self.cleanup_dir_list = []

        kwargs = {
            "appPath": self.appPath,
            "xrePath": self.xrePath,
            "utility_path": self.utility_path,
            "testingModulesDir": self.testingModulesDir,
            "debuggerInfo": self.debuggerInfo,
            "jsDebuggerInfo": self.jsDebuggerInfo,
            "headJSPath": self.headJSPath,
            "tempDir": self.tempDir,
            "testharnessdir": self.testharnessdir,
            "profileName": self.profileName,
            "singleFile": self.singleFile,
            "env": self.env,  # making a copy of this in the testthreads
            "symbolsPath": self.symbolsPath,
            "logfiles": self.logfiles,
            "app_binary": self.app_binary,
            "xpcshell": self.xpcshell,
            "xpcsRunArgs": self.xpcsRunArgs,
            "failureManifest": self.failure_manifest,
            "jscovdir": self.jscovdir,
            "harness_timeout": self.harness_timeout,
            "stack_fixer_function": self.stack_fixer_function,
            "event": self.event,
            "cleanup_dir_list": self.cleanup_dir_list,
            "pStdout": pStdout,
            "pStderr": pStderr,
            "keep_going": self.keepGoing,
            "log": self.log,
            "interactive": self.interactive,
            "app_dir_key": appDirKey,
            "rootPrefsFile": self.prefsFile,
            "extraPrefs": options.get("extraPrefs") or [],
            "verboseIfFails": self.verboseIfFails,
            "headless": self.headless,
            "runFailures": self.runFailures,
            "timeoutAsPass": self.timeoutAsPass,
            "crashAsPass": self.crashAsPass,
            "conditionedProfileDir": self.conditioned_profile_dir,
            "repeat": self.repeat,
        }

        if self.sequential:
            # Allow user to kill hung xpcshell subprocess with SIGINT
            # when we are only running tests sequentially.
            signal.signal(signal.SIGINT, markGotSIGINT)

        if self.debuggerInfo:
            # Force a sequential run
            self.sequential = True

            # If we have an interactive debugger, disable SIGINT entirely.
            if self.debuggerInfo.interactive:
                signal.signal(signal.SIGINT, lambda signum, frame: None)

            if "lldb" in self.debuggerInfo.path:
                # Ask people to start debugging using 'process launch', see bug 952211.
                self.log.info(
                    "It appears that you're using LLDB to debug this test.  "
                    + "Please use the 'process launch' command instead of "
                    "the 'run' command to start xpcshell."
                )

        if self.jsDebuggerInfo:
            # The js debugger magic needs more work to do the right thing
            # if debugging multiple files.
            if len(self.alltests) != 1:
                self.log.error(
                    "Error: --jsdebugger can only be used with a single test!"
                )
                return False

        # The test itself needs to know whether it is a tsan build, since
        # that has an effect on interpretation of the process return value.
        usingTSan = "tsan" in self.mozInfo and self.mozInfo["tsan"]

        usingCrashReporter = (
            "crashreporter" in self.mozInfo and self.mozInfo["crashreporter"]
        )

        # create a queue of all tests that will run
        tests_queue = deque()
        # also a list for the tests that need to be run sequentially
        sequential_tests = []
        status = None

        if options.get("repeat", 0) > 0:
            self.sequential = True

        if not options.get("verify"):
            for test_object in self.alltests:
                # Test identifiers are provided for the convenience of logging. These
                # start as path names but are rewritten in case tests from the same path
                # are re-run.

                path = test_object["path"]

                if self.singleFile and not path.endswith(self.singleFile):
                    continue

                # if we have --repeat, duplicate the tests as needed
                for i in range(0, options.get("repeat", 0) + 1):
                    self.testCount += 1

                    test = testClass(
                        test_object,
                        verbose=self.verbose or test_object.get("verbose") == "true",
                        usingTSan=usingTSan,
                        usingCrashReporter=usingCrashReporter,
                        mobileArgs=mobileArgs,
                        **kwargs,
                    )
                    if "run-sequentially" in test_object or self.sequential:
                        sequential_tests.append(test)
                    else:
                        tests_queue.append(test)

            status = self.runTestList(
                tests_queue, sequential_tests, testClass, mobileArgs, **kwargs
            )
        else:
            #
            # Test verification: Run each test many times, in various configurations,
            # in hopes of finding intermittent failures.
            #

            def step1():
                # Run tests sequentially. Parallel mode would also work, except that
                # the logging system gets confused when 2 or more tests with the same
                # name run at the same time.
                sequential_tests = []
                for i in range(VERIFY_REPEAT):
                    self.testCount += 1
                    test = testClass(
                        test_object, retry=False, mobileArgs=mobileArgs, **kwargs
                    )
                    sequential_tests.append(test)
                status = self.runTestList(
                    tests_queue, sequential_tests, testClass, mobileArgs, **kwargs
                )
                return status

            def step2():
                # Run tests sequentially, with MOZ_CHAOSMODE enabled.
                sequential_tests = []
                self.env["MOZ_CHAOSMODE"] = "0xfb"
                # chaosmode runs really slow, allow tests extra time to pass
                self.harness_timeout = self.harness_timeout * 2
                for i in range(VERIFY_REPEAT):
                    self.testCount += 1
                    test = testClass(
                        test_object, retry=False, mobileArgs=mobileArgs, **kwargs
                    )
                    sequential_tests.append(test)
                status = self.runTestList(
                    tests_queue, sequential_tests, testClass, mobileArgs, **kwargs
                )
                self.harness_timeout = self.harness_timeout / 2
                return status

            steps = [
                ("1. Run each test %d times, sequentially." % VERIFY_REPEAT, step1),
                (
                    "2. Run each test %d times, sequentially, in chaos mode."
                    % VERIFY_REPEAT,
                    step2,
                ),
            ]
            startTime = datetime.now()
            maxTime = timedelta(seconds=options["verifyMaxTime"])
            for test_object in self.alltests:
                stepResults = {}
                for descr, step in steps:
                    stepResults[descr] = "not run / incomplete"
                finalResult = "PASSED"
                for descr, step in steps:
                    if (datetime.now() - startTime) > maxTime:
                        self.log.info(
                            "::: Test verification is taking too long: Giving up!"
                        )
                        self.log.info(
                            "::: So far, all checks passed, but not "
                            "all checks were run."
                        )
                        break
                    self.log.info(":::")
                    self.log.info('::: Running test verification step "%s"...' % descr)
                    self.log.info(":::")
                    status = step()
                    if status is not True:
                        stepResults[descr] = "FAIL"
                        finalResult = "FAILED!"
                        break
                    stepResults[descr] = "Pass"
                self.log.info(":::")
                self.log.info(
                    "::: Test verification summary for: %s" % test_object["path"]
                )
                self.log.info(":::")
                for descr in sorted(stepResults.keys()):
                    self.log.info("::: %s : %s" % (descr, stepResults[descr]))
                self.log.info(":::")
                self.log.info("::: Test verification %s" % finalResult)
                self.log.info(":::")

        self.shutdownNode()
        self.shutdownHttp3Server()

        return status

    def start_test(self, test):
        test.start()

    def test_ended(self, test):
        pass

    def runTestList(
        self, tests_queue, sequential_tests, testClass, mobileArgs, **kwargs
    ):
        if self.sequential:
            self.log.info("Running tests sequentially.")
        else:
            self.log.info("Using at most %d threads." % self.threadCount)

        # keep a set of threadCount running tests and start running the
        # tests in the queue at most threadCount at a time
        running_tests = set()
        keep_going = True
        infra_abort = False
        exceptions = []
        tracebacks = []
        self.try_again_list = []

        tests_by_manifest = defaultdict(list)
        for test in self.alltests:
            group = get_full_group_name(test)
            tests_by_manifest[group].append(test["id"])

        self.log.suite_start(tests_by_manifest, name="xpcshell")

        while tests_queue or running_tests:
            # if we're not supposed to continue and all of the running tests
            # are done, stop
            if not keep_going and not running_tests:
                break

            # if there's room to run more tests, start running them
            while (
                keep_going and tests_queue and (len(running_tests) < self.threadCount)
            ):
                test = tests_queue.popleft()
                running_tests.add(test)
                self.start_test(test)

            # queue is full (for now) or no more new tests,
            # process the finished tests so far

            # wait for at least one of the tests to finish
            self.event.wait(1)
            self.event.clear()

            # find what tests are done (might be more than 1)
            done_tests = set()
            for test in running_tests:
                if test.done:
                    self.test_ended(test)
                    done_tests.add(test)
                    test.join(
                        1
                    )  # join with timeout so we don't hang on blocked threads
                    # if the test had trouble, we will try running it again
                    # at the end of the run
                    if test.retry or test.is_alive():
                        # if the join call timed out, test.is_alive => True
                        self.try_again_list.append(test.test_object)
                        continue
                    # did the test encounter any exception?
                    if test.exception:
                        exceptions.append(test.exception)
                        tracebacks.append(test.traceback)
                        # we won't add any more tests, will just wait for
                        # the currently running ones to finish
                        keep_going = False
                    infra_abort = infra_abort and test.infra
                    keep_going = keep_going and test.keep_going
                    self.addTestResults(test)

            # make room for new tests to run
            running_tests.difference_update(done_tests)

        if infra_abort:
            return TBPL_RETRY  # terminate early

        if keep_going:
            # run the other tests sequentially
            for test in sequential_tests:
                if not keep_going:
                    self.log.error(
                        "TEST-UNEXPECTED-FAIL | Received SIGINT (control-C), so "
                        "stopped run. (Use --keep-going to keep running tests "
                        "after killing one with SIGINT)"
                    )
                    break
                self.start_test(test)
                test.join()
                self.test_ended(test)
                if (test.failCount > 0 or test.passCount <= 0) and os.environ.get(
                    "MOZ_AUTOMATION", 0
                ) != 0:
                    self.try_again_list.append(test.test_object)
                    continue
                self.addTestResults(test)
                # did the test encounter any exception?
                if test.exception:
                    exceptions.append(test.exception)
                    tracebacks.append(test.traceback)
                    break
                keep_going = test.keep_going

        # retry tests that failed when run in parallel
        if self.try_again_list:
            self.log.info("Retrying tests that failed when run in parallel.")
        for test_object in self.try_again_list:
            test = testClass(
                test_object,
                retry=False,
                verbose=self.verbose,
                mobileArgs=mobileArgs,
                **kwargs,
            )
            self.start_test(test)
            test.join()
            self.test_ended(test)
            self.addTestResults(test)
            # did the test encounter any exception?
            if test.exception:
                exceptions.append(test.exception)
                tracebacks.append(test.traceback)
                break
            keep_going = test.keep_going

        # restore default SIGINT behaviour
        signal.signal(signal.SIGINT, signal.SIG_DFL)

        # Clean up any slacker directories that might be lying around
        # Some might fail because of windows taking too long to unlock them.
        # We don't do anything if this fails because the test machines will have
        # their $TEMP dirs cleaned up on reboot anyway.
        for directory in self.cleanup_dir_list:
            try:
                shutil.rmtree(directory)
            except Exception:
                self.log.info("%s could not be cleaned up." % directory)

        if exceptions:
            self.log.info("Following exceptions were raised:")
            for t in tracebacks:
                self.log.error(t)
            raise exceptions[0]

        if self.testCount == 0 and os.environ.get("MOZ_AUTOMATION") != "1":
            self.log.error("No tests run. Did you pass an invalid --test-path?")
            self.failCount = 1

        # doing this allows us to pass the mozharness parsers that
        # report an orange job for failCount>0
        if self.runFailures:
            passed = self.passCount
            self.passCount = self.failCount
            self.failCount = passed

        self.log.info("INFO | Result summary:")
        self.log.info("INFO | Passed: %d" % self.passCount)
        self.log.info("INFO | Failed: %d" % self.failCount)
        self.log.info("INFO | Todo: %d" % self.todoCount)
        self.log.info("INFO | Retried: %d" % len(self.try_again_list))

        if gotSIGINT and not keep_going:
            self.log.error(
                "TEST-UNEXPECTED-FAIL | Received SIGINT (control-C), so stopped run. "
                "(Use --keep-going to keep running tests after "
                "killing one with SIGINT)"
            )
            return False

        self.log.suite_end()
        return self.runFailures or self.failCount == 0


def main():
    parser = parser_desktop()
    options = parser.parse_args()

    log = commandline.setup_logging("XPCShell", options, {"tbpl": sys.stdout})

    if options.xpcshell is None and options.app_binary is None:
        log.error(
            "Must provide path to xpcshell using --xpcshell or Firefox using --app-binary"
        )
        sys.exit(1)

    if options.xpcshell is not None and options.app_binary is not None:
        log.error(
            "Cannot provide --xpcshell and --app-binary - they are mutually exclusive options. Choose one."
        )
        sys.exit(1)

    xpcsh = XPCShellTests(log)

    if options.interactive and not options.testPath:
        log.error("Error: You must specify a test filename in interactive mode!")
        sys.exit(1)

    result = xpcsh.runTests(options)
    if result == TBPL_RETRY:
        sys.exit(4)

    if not result:
        sys.exit(1)


if __name__ == "__main__":
    main()