~bzr-pqm/bzr/bzr.dev

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
# Copyright (C) 2005, 2006, 2007 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA


# TODO: Perhaps there should be an API to find out if bzr running under the
# test suite -- some plugins might want to avoid making intrusive changes if
# this is the case.  However, we want behaviour under to test to diverge as
# little as possible, so this should be used rarely if it's added at all.
# (Suggestion from j-a-meinel, 2005-11-24)

# NOTE: Some classes in here use camelCaseNaming() rather than
# underscore_naming().  That's for consistency with unittest; it's not the
# general style of bzrlib.  Please continue that consistency when adding e.g.
# new assertFoo() methods.

import codecs
from cStringIO import StringIO
import difflib
import doctest
import errno
import logging
import os
from pprint import pformat
import re
import shlex
import stat
from subprocess import Popen, PIPE
import sys
import tempfile
import unittest
import time


from bzrlib import (
    bzrdir,
    debug,
    errors,
    memorytree,
    osutils,
    progress,
    ui,
    urlutils,
    )
import bzrlib.branch
import bzrlib.commands
import bzrlib.timestamp
import bzrlib.export
import bzrlib.inventory
import bzrlib.iterablefile
import bzrlib.lockdir
try:
    import bzrlib.lsprof
except ImportError:
    # lsprof not available
    pass
from bzrlib.merge import merge_inner
import bzrlib.merge3
import bzrlib.osutils
import bzrlib.plugin
from bzrlib.revision import common_ancestor
import bzrlib.store
from bzrlib import symbol_versioning
import bzrlib.trace
from bzrlib.transport import get_transport
import bzrlib.transport
from bzrlib.transport.local import LocalURLServer
from bzrlib.transport.memory import MemoryServer
from bzrlib.transport.readonly import ReadonlyServer
from bzrlib.trace import mutter, note
from bzrlib.tests import TestUtil
from bzrlib.tests.HttpServer import HttpServer
from bzrlib.tests.TestUtil import (
                          TestSuite,
                          TestLoader,
                          )
from bzrlib.tests.treeshape import build_tree_contents
from bzrlib.workingtree import WorkingTree, WorkingTreeFormat2

default_transport = LocalURLServer

MODULES_TO_TEST = []
MODULES_TO_DOCTEST = [
                      bzrlib.timestamp,
                      bzrlib.errors,
                      bzrlib.export,
                      bzrlib.inventory,
                      bzrlib.iterablefile,
                      bzrlib.lockdir,
                      bzrlib.merge3,
                      bzrlib.option,
                      bzrlib.store,
                      ]

NUMBERED_DIRS = False   # dirs kind for TestCaseInTempDir (numbered or named)


def packages_to_test():
    """Return a list of packages to test.

    The packages are not globally imported so that import failures are
    triggered when running selftest, not when importing the command.
    """
    import bzrlib.doc
    import bzrlib.tests.blackbox
    import bzrlib.tests.branch_implementations
    import bzrlib.tests.bzrdir_implementations
    import bzrlib.tests.interrepository_implementations
    import bzrlib.tests.interversionedfile_implementations
    import bzrlib.tests.intertree_implementations
    import bzrlib.tests.per_lock
    import bzrlib.tests.repository_implementations
    import bzrlib.tests.revisionstore_implementations
    import bzrlib.tests.tree_implementations
    import bzrlib.tests.workingtree_implementations
    return [
            bzrlib.doc,
            bzrlib.tests.blackbox,
            bzrlib.tests.branch_implementations,
            bzrlib.tests.bzrdir_implementations,
            bzrlib.tests.interrepository_implementations,
            bzrlib.tests.interversionedfile_implementations,
            bzrlib.tests.intertree_implementations,
            bzrlib.tests.per_lock,
            bzrlib.tests.repository_implementations,
            bzrlib.tests.revisionstore_implementations,
            bzrlib.tests.tree_implementations,
            bzrlib.tests.workingtree_implementations,
            ]


class ExtendedTestResult(unittest._TextTestResult):
    """Accepts, reports and accumulates the results of running tests.

    Compared to this unittest version this class adds support for profiling,
    benchmarking, stopping as soon as a test fails,  and skipping tests.
    There are further-specialized subclasses for different types of display.
    """

    stop_early = False
    
    def __init__(self, stream, descriptions, verbosity,
                 bench_history=None,
                 num_tests=None,
                 ):
        """Construct new TestResult.

        :param bench_history: Optionally, a writable file object to accumulate
            benchmark results.
        """
        unittest._TextTestResult.__init__(self, stream, descriptions, verbosity)
        if bench_history is not None:
            from bzrlib.version import _get_bzr_source_tree
            src_tree = _get_bzr_source_tree()
            if src_tree:
                try:
                    revision_id = src_tree.get_parent_ids()[0]
                except IndexError:
                    # XXX: if this is a brand new tree, do the same as if there
                    # is no branch.
                    revision_id = ''
            else:
                # XXX: If there's no branch, what should we do?
                revision_id = ''
            bench_history.write("--date %s %s\n" % (time.time(), revision_id))
        self._bench_history = bench_history
        self.ui = ui.ui_factory
        self.num_tests = num_tests
        self.error_count = 0
        self.failure_count = 0
        self.skip_count = 0
        self.count = 0
        self._overall_start_time = time.time()
    
    def extractBenchmarkTime(self, testCase):
        """Add a benchmark time for the current test case."""
        self._benchmarkTime = getattr(testCase, "_benchtime", None)
    
    def _elapsedTestTimeString(self):
        """Return a time string for the overall time the current test has taken."""
        return self._formatTime(time.time() - self._start_time)

    def _testTimeString(self):
        if self._benchmarkTime is not None:
            return "%s/%s" % (
                self._formatTime(self._benchmarkTime),
                self._elapsedTestTimeString())
        else:
            return "           %s" % self._elapsedTestTimeString()

    def _formatTime(self, seconds):
        """Format seconds as milliseconds with leading spaces."""
        # some benchmarks can take thousands of seconds to run, so we need 8
        # places
        return "%8dms" % (1000 * seconds)

    def _shortened_test_description(self, test):
        what = test.id()
        what = re.sub(r'^bzrlib\.(tests|benchmarks)\.', '', what)
        return what

    def startTest(self, test):
        unittest.TestResult.startTest(self, test)
        self.report_test_start(test)
        test.number = self.count
        self._recordTestStartTime()

    def _recordTestStartTime(self):
        """Record that a test has started."""
        self._start_time = time.time()

    def addError(self, test, err):
        if isinstance(err[1], TestSkipped):
            return self.addSkipped(test, err)    
        unittest.TestResult.addError(self, test, err)
        # We can only do this if we have one of our TestCases, not if
        # we have a doctest.
        setKeepLogfile = getattr(test, 'setKeepLogfile', None)
        if setKeepLogfile is not None:
            setKeepLogfile()
        self.extractBenchmarkTime(test)
        self.report_error(test, err)
        if self.stop_early:
            self.stop()

    def addFailure(self, test, err):
        unittest.TestResult.addFailure(self, test, err)
        # We can only do this if we have one of our TestCases, not if
        # we have a doctest.
        setKeepLogfile = getattr(test, 'setKeepLogfile', None)
        if setKeepLogfile is not None:
            setKeepLogfile()
        self.extractBenchmarkTime(test)
        self.report_failure(test, err)
        if self.stop_early:
            self.stop()

    def addSuccess(self, test):
        self.extractBenchmarkTime(test)
        if self._bench_history is not None:
            if self._benchmarkTime is not None:
                self._bench_history.write("%s %s\n" % (
                    self._formatTime(self._benchmarkTime),
                    test.id()))
        self.report_success(test)
        unittest.TestResult.addSuccess(self, test)

    def addSkipped(self, test, skip_excinfo):
        self.extractBenchmarkTime(test)
        self.report_skip(test, skip_excinfo)
        # seems best to treat this as success from point-of-view of unittest
        # -- it actually does nothing so it barely matters :)
        try:
            test.tearDown()
        except KeyboardInterrupt:
            raise
        except:
            self.addError(test, test.__exc_info())
        else:
            unittest.TestResult.addSuccess(self, test)

    def printErrorList(self, flavour, errors):
        for test, err in errors:
            self.stream.writeln(self.separator1)
            self.stream.writeln("%s: %s" % (flavour, self.getDescription(test)))
            if getattr(test, '_get_log', None) is not None:
                print >>self.stream
                print >>self.stream, \
                        ('vvvv[log from %s]' % test.id()).ljust(78,'-')
                print >>self.stream, test._get_log()
                print >>self.stream, \
                        ('^^^^[log from %s]' % test.id()).ljust(78,'-')
            self.stream.writeln(self.separator2)
            self.stream.writeln("%s" % err)

    def finished(self):
        pass

    def report_cleaning_up(self):
        pass

    def report_success(self, test):
        pass


class TextTestResult(ExtendedTestResult):
    """Displays progress and results of tests in text form"""

    def __init__(self, *args, **kw):
        ExtendedTestResult.__init__(self, *args, **kw)
        self.pb = self.ui.nested_progress_bar()
        self.pb.show_pct = False
        self.pb.show_spinner = False
        self.pb.show_eta = False, 
        self.pb.show_count = False
        self.pb.show_bar = False

    def report_starting(self):
        self.pb.update('[test 0/%d] starting...' % (self.num_tests))

    def _progress_prefix_text(self):
        a = '[%d' % self.count
        if self.num_tests is not None:
            a +='/%d' % self.num_tests
        a += ' in %ds' % (time.time() - self._overall_start_time)
        if self.error_count:
            a += ', %d errors' % self.error_count
        if self.failure_count:
            a += ', %d failed' % self.failure_count
        if self.skip_count:
            a += ', %d skipped' % self.skip_count
        a += ']'
        return a

    def report_test_start(self, test):
        self.count += 1
        self.pb.update(
                self._progress_prefix_text()
                + ' ' 
                + self._shortened_test_description(test))

    def _test_description(self, test):
        if NUMBERED_DIRS:
            return '#%d %s' % (self.count,
                               self._shortened_test_description(test))
        else:
            return self._shortened_test_description(test)

    def report_error(self, test, err):
        self.error_count += 1
        self.pb.note('ERROR: %s\n    %s\n', 
            self._test_description(test),
            err[1],
            )

    def report_failure(self, test, err):
        self.failure_count += 1
        self.pb.note('FAIL: %s\n    %s\n', 
            self._test_description(test),
            err[1],
            )

    def report_skip(self, test, skip_excinfo):
        self.skip_count += 1
        if False:
            # at the moment these are mostly not things we can fix
            # and so they just produce stipple; use the verbose reporter
            # to see them.
            if False:
                # show test and reason for skip
                self.pb.note('SKIP: %s\n    %s\n', 
                    self._shortened_test_description(test),
                    skip_excinfo[1])
            else:
                # since the class name was left behind in the still-visible
                # progress bar...
                self.pb.note('SKIP: %s', skip_excinfo[1])

    def report_cleaning_up(self):
        self.pb.update('cleaning up...')

    def finished(self):
        self.pb.finished()


class VerboseTestResult(ExtendedTestResult):
    """Produce long output, with one line per test run plus times"""

    def _ellipsize_to_right(self, a_string, final_width):
        """Truncate and pad a string, keeping the right hand side"""
        if len(a_string) > final_width:
            result = '...' + a_string[3-final_width:]
        else:
            result = a_string
        return result.ljust(final_width)

    def report_starting(self):
        self.stream.write('running %d tests...\n' % self.num_tests)

    def report_test_start(self, test):
        self.count += 1
        name = self._shortened_test_description(test)
        # width needs space for 6 char status, plus 1 for slash, plus 2 10-char
        # numbers, plus a trailing blank
        # when NUMBERED_DIRS: plus 5 chars on test number, plus 1 char on space
        if NUMBERED_DIRS:
            self.stream.write('%5d ' % self.count)
            self.stream.write(self._ellipsize_to_right(name,
                                osutils.terminal_width()-36))
        else:
            self.stream.write(self._ellipsize_to_right(name,
                                osutils.terminal_width()-30))
        self.stream.flush()

    def _error_summary(self, err):
        indent = ' ' * 4
        if NUMBERED_DIRS:
            indent += ' ' * 6
        return '%s%s' % (indent, err[1])

    def report_error(self, test, err):
        self.error_count += 1
        self.stream.writeln('ERROR %s\n%s'
                % (self._testTimeString(),
                   self._error_summary(err)))

    def report_failure(self, test, err):
        self.failure_count += 1
        self.stream.writeln(' FAIL %s\n%s'
                % (self._testTimeString(),
                   self._error_summary(err)))

    def report_success(self, test):
        self.stream.writeln('   OK %s' % self._testTimeString())
        for bench_called, stats in getattr(test, '_benchcalls', []):
            self.stream.writeln('LSProf output for %s(%s, %s)' % bench_called)
            stats.pprint(file=self.stream)
        self.stream.flush()

    def report_skip(self, test, skip_excinfo):
        self.skip_count += 1
        self.stream.writeln(' SKIP %s\n%s'
                % (self._testTimeString(),
                   self._error_summary(skip_excinfo)))


class TextTestRunner(object):
    stop_on_failure = False

    def __init__(self,
                 stream=sys.stderr,
                 descriptions=0,
                 verbosity=1,
                 keep_output=False,
                 bench_history=None):
        self.stream = unittest._WritelnDecorator(stream)
        self.descriptions = descriptions
        self.verbosity = verbosity
        self.keep_output = keep_output
        self._bench_history = bench_history

    def run(self, test):
        "Run the given test case or test suite."
        startTime = time.time()
        if self.verbosity == 1:
            result_class = TextTestResult
        elif self.verbosity >= 2:
            result_class = VerboseTestResult
        result = result_class(self.stream,
                              self.descriptions,
                              self.verbosity,
                              bench_history=self._bench_history,
                              num_tests=test.countTestCases(),
                              )
        result.stop_early = self.stop_on_failure
        result.report_starting()
        test.run(result)
        stopTime = time.time()
        timeTaken = stopTime - startTime
        result.printErrors()
        self.stream.writeln(result.separator2)
        run = result.testsRun
        self.stream.writeln("Ran %d test%s in %.3fs" %
                            (run, run != 1 and "s" or "", timeTaken))
        self.stream.writeln()
        if not result.wasSuccessful():
            self.stream.write("FAILED (")
            failed, errored = map(len, (result.failures, result.errors))
            if failed:
                self.stream.write("failures=%d" % failed)
            if errored:
                if failed: self.stream.write(", ")
                self.stream.write("errors=%d" % errored)
            self.stream.writeln(")")
        else:
            self.stream.writeln("OK")
        if result.skip_count > 0:
            skipped = result.skip_count
            self.stream.writeln('%d test%s skipped' %
                                (skipped, skipped != 1 and "s" or ""))
        result.report_cleaning_up()
        # This is still a little bogus, 
        # but only a little. Folk not using our testrunner will
        # have to delete their temp directories themselves.
        test_root = TestCaseWithMemoryTransport.TEST_ROOT
        if result.wasSuccessful() or not self.keep_output:
            if test_root is not None:
                # If LANG=C we probably have created some bogus paths
                # which rmtree(unicode) will fail to delete
                # so make sure we are using rmtree(str) to delete everything
                # except on win32, where rmtree(str) will fail
                # since it doesn't have the property of byte-stream paths
                # (they are either ascii or mbcs)
                if sys.platform == 'win32':
                    # make sure we are using the unicode win32 api
                    test_root = unicode(test_root)
                else:
                    test_root = test_root.encode(
                        sys.getfilesystemencoding())
                try:
                    osutils.rmtree(test_root)
                except OSError, e:
                    if sys.platform == 'win32' and e.errno == errno.EACCES:
                        print >>sys.stderr, ('Permission denied: '
                                             'unable to remove testing dir '
                                             '%s' % os.path.basename(test_root))
                    else:
                        raise
        else:
            note("Failed tests working directories are in '%s'\n", test_root)
        TestCaseWithMemoryTransport.TEST_ROOT = None
        result.finished()
        return result


def iter_suite_tests(suite):
    """Return all tests in a suite, recursing through nested suites"""
    for item in suite._tests:
        if isinstance(item, unittest.TestCase):
            yield item
        elif isinstance(item, unittest.TestSuite):
            for r in iter_suite_tests(item):
                yield r
        else:
            raise Exception('unknown object %r inside test suite %r'
                            % (item, suite))


class TestSkipped(Exception):
    """Indicates that a test was intentionally skipped, rather than failing."""


class CommandFailed(Exception):
    pass


class StringIOWrapper(object):
    """A wrapper around cStringIO which just adds an encoding attribute.
    
    Internally we can check sys.stdout to see what the output encoding
    should be. However, cStringIO has no encoding attribute that we can
    set. So we wrap it instead.
    """
    encoding='ascii'
    _cstring = None

    def __init__(self, s=None):
        if s is not None:
            self.__dict__['_cstring'] = StringIO(s)
        else:
            self.__dict__['_cstring'] = StringIO()

    def __getattr__(self, name, getattr=getattr):
        return getattr(self.__dict__['_cstring'], name)

    def __setattr__(self, name, val):
        if name == 'encoding':
            self.__dict__['encoding'] = val
        else:
            return setattr(self._cstring, name, val)


class TestUIFactory(ui.CLIUIFactory):
    """A UI Factory for testing.

    Hide the progress bar but emit note()s.
    Redirect stdin.
    Allows get_password to be tested without real tty attached.
    """

    def __init__(self,
                 stdout=None,
                 stderr=None,
                 stdin=None):
        super(TestUIFactory, self).__init__()
        if stdin is not None:
            # We use a StringIOWrapper to be able to test various
            # encodings, but the user is still responsible to
            # encode the string and to set the encoding attribute
            # of StringIOWrapper.
            self.stdin = StringIOWrapper(stdin)
        if stdout is None:
            self.stdout = sys.stdout
        else:
            self.stdout = stdout
        if stderr is None:
            self.stderr = sys.stderr
        else:
            self.stderr = stderr

    def clear(self):
        """See progress.ProgressBar.clear()."""

    def clear_term(self):
        """See progress.ProgressBar.clear_term()."""

    def clear_term(self):
        """See progress.ProgressBar.clear_term()."""

    def finished(self):
        """See progress.ProgressBar.finished()."""

    def note(self, fmt_string, *args, **kwargs):
        """See progress.ProgressBar.note()."""
        self.stdout.write((fmt_string + "\n") % args)

    def progress_bar(self):
        return self

    def nested_progress_bar(self):
        return self

    def update(self, message, count=None, total=None):
        """See progress.ProgressBar.update()."""

    def get_non_echoed_password(self, prompt):
        """Get password from stdin without trying to handle the echo mode"""
        if prompt:
            self.stdout.write(prompt)
        password = self.stdin.readline()
        if not password:
            raise EOFError
        if password[-1] == '\n':
            password = password[:-1]
        return password


class TestCase(unittest.TestCase):
    """Base class for bzr unit tests.
    
    Tests that need access to disk resources should subclass 
    TestCaseInTempDir not TestCase.

    Error and debug log messages are redirected from their usual
    location into a temporary file, the contents of which can be
    retrieved by _get_log().  We use a real OS file, not an in-memory object,
    so that it can also capture file IO.  When the test completes this file
    is read into memory and removed from disk.
       
    There are also convenience functions to invoke bzr's command-line
    routine, and to build and check bzr trees.
   
    In addition to the usual method of overriding tearDown(), this class also
    allows subclasses to register functions into the _cleanups list, which is
    run in order as the object is torn down.  It's less likely this will be
    accidentally overlooked.
    """

    _log_file_name = None
    _log_contents = ''
    _keep_log_file = False
    # record lsprof data when performing benchmark calls.
    _gather_lsprof_in_benchmarks = False

    def __init__(self, methodName='testMethod'):
        super(TestCase, self).__init__(methodName)
        self._cleanups = []

    def setUp(self):
        unittest.TestCase.setUp(self)
        self._cleanEnvironment()
        bzrlib.trace.disable_default_logging()
        self._silenceUI()
        self._startLogFile()
        self._benchcalls = []
        self._benchtime = None
        # prevent hooks affecting tests
        self._preserved_hooks = bzrlib.branch.Branch.hooks
        self.addCleanup(self._restoreHooks)
        # this list of hooks must be kept in sync with the defaults
        # in branch.py
        bzrlib.branch.Branch.hooks = bzrlib.branch.BranchHooks()

    def _silenceUI(self):
        """Turn off UI for duration of test"""
        # by default the UI is off; tests can turn it on if they want it.
        saved = ui.ui_factory
        def _restore():
            ui.ui_factory = saved
        ui.ui_factory = ui.SilentUIFactory()
        self.addCleanup(_restore)

    def _ndiff_strings(self, a, b):
        """Return ndiff between two strings containing lines.
        
        A trailing newline is added if missing to make the strings
        print properly."""
        if b and b[-1] != '\n':
            b += '\n'
        if a and a[-1] != '\n':
            a += '\n'
        difflines = difflib.ndiff(a.splitlines(True),
                                  b.splitlines(True),
                                  linejunk=lambda x: False,
                                  charjunk=lambda x: False)
        return ''.join(difflines)

    def assertEqual(self, a, b, message=''):
        if a == b:
            return
        if message:
            message += '\n'
        raise AssertionError("%snot equal:\na = %s\nb = %s\n"
            % (message,
               pformat(a, indent=4), pformat(b, indent=4)))

    assertEquals = assertEqual

    def assertEqualDiff(self, a, b, message=None):
        """Assert two texts are equal, if not raise an exception.
        
        This is intended for use with multi-line strings where it can 
        be hard to find the differences by eye.
        """
        # TODO: perhaps override assertEquals to call this for strings?
        if a == b:
            return
        if message is None:
            message = "texts not equal:\n"
        raise AssertionError(message + 
                             self._ndiff_strings(a, b))      
        
    def assertEqualMode(self, mode, mode_test):
        self.assertEqual(mode, mode_test,
                         'mode mismatch %o != %o' % (mode, mode_test))

    def assertStartsWith(self, s, prefix):
        if not s.startswith(prefix):
            raise AssertionError('string %r does not start with %r' % (s, prefix))

    def assertEndsWith(self, s, suffix):
        """Asserts that s ends with suffix."""
        if not s.endswith(suffix):
            raise AssertionError('string %r does not end with %r' % (s, suffix))

    def assertContainsRe(self, haystack, needle_re):
        """Assert that a contains something matching a regular expression."""
        if not re.search(needle_re, haystack):
            raise AssertionError('pattern "%r" not found in "%r"'
                    % (needle_re, haystack))

    def assertNotContainsRe(self, haystack, needle_re):
        """Assert that a does not match a regular expression"""
        if re.search(needle_re, haystack):
            raise AssertionError('pattern "%s" found in "%s"'
                    % (needle_re, haystack))

    def assertSubset(self, sublist, superlist):
        """Assert that every entry in sublist is present in superlist."""
        missing = []
        for entry in sublist:
            if entry not in superlist:
                missing.append(entry)
        if len(missing) > 0:
            raise AssertionError("value(s) %r not present in container %r" % 
                                 (missing, superlist))

    def assertListRaises(self, excClass, func, *args, **kwargs):
        """Fail unless excClass is raised when the iterator from func is used.
        
        Many functions can return generators this makes sure
        to wrap them in a list() call to make sure the whole generator
        is run, and that the proper exception is raised.
        """
        try:
            list(func(*args, **kwargs))
        except excClass:
            return
        else:
            if getattr(excClass,'__name__', None) is not None:
                excName = excClass.__name__
            else:
                excName = str(excClass)
            raise self.failureException, "%s not raised" % excName

    def assertIs(self, left, right, message=None):
        if not (left is right):
            if message is not None:
                raise AssertionError(message)
            else:
                raise AssertionError("%r is not %r." % (left, right))

    def assertIsNot(self, left, right, message=None):
        if (left is right):
            if message is not None:
                raise AssertionError(message)
            else:
                raise AssertionError("%r is %r." % (left, right))

    def assertTransportMode(self, transport, path, mode):
        """Fail if a path does not have mode mode.
        
        If modes are not supported on this transport, the assertion is ignored.
        """
        if not transport._can_roundtrip_unix_modebits():
            return
        path_stat = transport.stat(path)
        actual_mode = stat.S_IMODE(path_stat.st_mode)
        self.assertEqual(mode, actual_mode,
            'mode of %r incorrect (%o != %o)' % (path, mode, actual_mode))

    def assertIsInstance(self, obj, kls):
        """Fail if obj is not an instance of kls"""
        if not isinstance(obj, kls):
            self.fail("%r is an instance of %s rather than %s" % (
                obj, obj.__class__, kls))

    def _capture_warnings(self, a_callable, *args, **kwargs):
        """A helper for callDeprecated and applyDeprecated.

        :param a_callable: A callable to call.
        :param args: The positional arguments for the callable
        :param kwargs: The keyword arguments for the callable
        :return: A tuple (warnings, result). result is the result of calling
            a_callable(*args, **kwargs).
        """
        local_warnings = []
        def capture_warnings(msg, cls=None, stacklevel=None):
            # we've hooked into a deprecation specific callpath,
            # only deprecations should getting sent via it.
            self.assertEqual(cls, DeprecationWarning)
            local_warnings.append(msg)
        original_warning_method = symbol_versioning.warn
        symbol_versioning.set_warning_method(capture_warnings)
        try:
            result = a_callable(*args, **kwargs)
        finally:
            symbol_versioning.set_warning_method(original_warning_method)
        return (local_warnings, result)

    def applyDeprecated(self, deprecation_format, a_callable, *args, **kwargs):
        """Call a deprecated callable without warning the user.

        :param deprecation_format: The deprecation format that the callable
            should have been deprecated with. This is the same type as the 
            parameter to deprecated_method/deprecated_function. If the 
            callable is not deprecated with this format, an assertion error
            will be raised.
        :param a_callable: A callable to call. This may be a bound method or
            a regular function. It will be called with *args and **kwargs.
        :param args: The positional arguments for the callable
        :param kwargs: The keyword arguments for the callable
        :return: The result of a_callable(*args, **kwargs)
        """
        call_warnings, result = self._capture_warnings(a_callable,
            *args, **kwargs)
        expected_first_warning = symbol_versioning.deprecation_string(
            a_callable, deprecation_format)
        if len(call_warnings) == 0:
            self.fail("No deprecation warning generated by call to %s" %
                a_callable)
        self.assertEqual(expected_first_warning, call_warnings[0])
        return result

    def callDeprecated(self, expected, callable, *args, **kwargs):
        """Assert that a callable is deprecated in a particular way.

        This is a very precise test for unusual requirements. The 
        applyDeprecated helper function is probably more suited for most tests
        as it allows you to simply specify the deprecation format being used
        and will ensure that that is issued for the function being called.

        :param expected: a list of the deprecation warnings expected, in order
        :param callable: The callable to call
        :param args: The positional arguments for the callable
        :param kwargs: The keyword arguments for the callable
        """
        call_warnings, result = self._capture_warnings(callable,
            *args, **kwargs)
        self.assertEqual(expected, call_warnings)
        return result

    def _startLogFile(self):
        """Send bzr and test log messages to a temporary file.

        The file is removed as the test is torn down.
        """
        fileno, name = tempfile.mkstemp(suffix='.log', prefix='testbzr')
        self._log_file = os.fdopen(fileno, 'w+')
        self._log_nonce = bzrlib.trace.enable_test_log(self._log_file)
        self._log_file_name = name
        self.addCleanup(self._finishLogFile)

    def _finishLogFile(self):
        """Finished with the log file.

        Close the file and delete it, unless setKeepLogfile was called.
        """
        if self._log_file is None:
            return
        bzrlib.trace.disable_test_log(self._log_nonce)
        self._log_file.close()
        self._log_file = None
        if not self._keep_log_file:
            os.remove(self._log_file_name)
            self._log_file_name = None

    def setKeepLogfile(self):
        """Make the logfile not be deleted when _finishLogFile is called."""
        self._keep_log_file = True

    def addCleanup(self, callable):
        """Arrange to run a callable when this case is torn down.

        Callables are run in the reverse of the order they are registered, 
        ie last-in first-out.
        """
        if callable in self._cleanups:
            raise ValueError("cleanup function %r already registered on %s" 
                    % (callable, self))
        self._cleanups.append(callable)

    def _cleanEnvironment(self):
        new_env = {
            'BZR_HOME': None, # Don't inherit BZR_HOME to all the tests.
            'HOME': os.getcwd(),
            'APPDATA': None,  # bzr now use Win32 API and don't rely on APPDATA
            'BZR_EMAIL': None,
            'BZREMAIL': None, # may still be present in the environment
            'EMAIL': None,
            'BZR_PROGRESS_BAR': None,
            # Proxies
            'http_proxy': None,
            'HTTP_PROXY': None,
            'https_proxy': None,
            'HTTPS_PROXY': None,
            'no_proxy': None,
            'NO_PROXY': None,
            'all_proxy': None,
            'ALL_PROXY': None,
            # Nobody cares about these ones AFAIK. So far at
            # least. If you do (care), please update this comment
            # -- vila 20061212
            'ftp_proxy': None,
            'FTP_PROXY': None,
        }
        self.__old_env = {}
        self.addCleanup(self._restoreEnvironment)
        for name, value in new_env.iteritems():
            self._captureVar(name, value)

    def _captureVar(self, name, newvalue):
        """Set an environment variable, and reset it when finished."""
        self.__old_env[name] = osutils.set_or_unset_env(name, newvalue)

    def _restoreEnvironment(self):
        for name, value in self.__old_env.iteritems():
            osutils.set_or_unset_env(name, value)

    def _restoreHooks(self):
        bzrlib.branch.Branch.hooks = self._preserved_hooks

    def tearDown(self):
        self._runCleanups()
        unittest.TestCase.tearDown(self)

    def time(self, callable, *args, **kwargs):
        """Run callable and accrue the time it takes to the benchmark time.
        
        If lsprofiling is enabled (i.e. by --lsprof-time to bzr selftest) then
        this will cause lsprofile statistics to be gathered and stored in
        self._benchcalls.
        """
        if self._benchtime is None:
            self._benchtime = 0
        start = time.time()
        try:
            if not self._gather_lsprof_in_benchmarks:
                return callable(*args, **kwargs)
            else:
                # record this benchmark
                ret, stats = bzrlib.lsprof.profile(callable, *args, **kwargs)
                stats.sort()
                self._benchcalls.append(((callable, args, kwargs), stats))
                return ret
        finally:
            self._benchtime += time.time() - start

    def _runCleanups(self):
        """Run registered cleanup functions. 

        This should only be called from TestCase.tearDown.
        """
        # TODO: Perhaps this should keep running cleanups even if 
        # one of them fails?

        # Actually pop the cleanups from the list so tearDown running
        # twice is safe (this happens for skipped tests).
        while self._cleanups:
            self._cleanups.pop()()

    def log(self, *args):
        mutter(*args)

    def _get_log(self, keep_log_file=False):
        """Return as a string the log for this test. If the file is still
        on disk and keep_log_file=False, delete the log file and store the
        content in self._log_contents."""
        # flush the log file, to get all content
        import bzrlib.trace
        bzrlib.trace._trace_file.flush()
        if self._log_contents:
            return self._log_contents
        if self._log_file_name is not None:
            logfile = open(self._log_file_name)
            try:
                log_contents = logfile.read()
            finally:
                logfile.close()
            if not keep_log_file:
                self._log_contents = log_contents
                try:
                    os.remove(self._log_file_name)
                except OSError, e:
                    if sys.platform == 'win32' and e.errno == errno.EACCES:
                        print >>sys.stderr, ('Unable to delete log file '
                                             ' %r' % self._log_file_name)
                    else:
                        raise
            return log_contents
        else:
            return "DELETED log file to reduce memory footprint"

    def capture(self, cmd, retcode=0):
        """Shortcut that splits cmd into words, runs, and returns stdout"""
        return self.run_bzr_captured(cmd.split(), retcode=retcode)[0]

    def run_bzr_captured(self, argv, retcode=0, encoding=None, stdin=None,
                         working_dir=None):
        """Invoke bzr and return (stdout, stderr).

        Useful for code that wants to check the contents of the
        output, the way error messages are presented, etc.

        This should be the main method for tests that want to exercise the
        overall behavior of the bzr application (rather than a unit test
        or a functional test of the library.)

        Much of the old code runs bzr by forking a new copy of Python, but
        that is slower, harder to debug, and generally not necessary.

        This runs bzr through the interface that catches and reports
        errors, and with logging set to something approximating the
        default, so that error reporting can be checked.

        :param argv: arguments to invoke bzr
        :param retcode: expected return code, or None for don't-care.
        :param encoding: encoding for sys.stdout and sys.stderr
        :param stdin: A string to be used as stdin for the command.
        :param working_dir: Change to this directory before running
        """
        if encoding is None:
            encoding = bzrlib.user_encoding
        stdout = StringIOWrapper()
        stderr = StringIOWrapper()
        stdout.encoding = encoding
        stderr.encoding = encoding

        self.log('run bzr: %r', argv)
        # FIXME: don't call into logging here
        handler = logging.StreamHandler(stderr)
        handler.setLevel(logging.INFO)
        logger = logging.getLogger('')
        logger.addHandler(handler)
        old_ui_factory = ui.ui_factory
        ui.ui_factory = TestUIFactory(stdin=stdin, stdout=stdout, stderr=stderr)

        cwd = None
        if working_dir is not None:
            cwd = osutils.getcwd()
            os.chdir(working_dir)

        try:
            saved_debug_flags = frozenset(debug.debug_flags)
            debug.debug_flags.clear()
            try:
                result = self.apply_redirected(ui.ui_factory.stdin,
                                               stdout, stderr,
                                               bzrlib.commands.run_bzr_catch_errors,
                                               argv)
            finally:
                debug.debug_flags.update(saved_debug_flags)
        finally:
            logger.removeHandler(handler)
            ui.ui_factory = old_ui_factory
            if cwd is not None:
                os.chdir(cwd)

        out = stdout.getvalue()
        err = stderr.getvalue()
        if out:
            self.log('output:\n%r', out)
        if err:
            self.log('errors:\n%r', err)
        if retcode is not None:
            self.assertEquals(retcode, result)
        return out, err

    def run_bzr(self, *args, **kwargs):
        """Invoke bzr, as if it were run from the command line.

        This should be the main method for tests that want to exercise the
        overall behavior of the bzr application (rather than a unit test
        or a functional test of the library.)

        This sends the stdout/stderr results into the test's log,
        where it may be useful for debugging.  See also run_captured.

        :param stdin: A string to be used as stdin for the command.
        :param retcode: The status code the command should return
        :param working_dir: The directory to run the command in
        """
        retcode = kwargs.pop('retcode', 0)
        encoding = kwargs.pop('encoding', None)
        stdin = kwargs.pop('stdin', None)
        working_dir = kwargs.pop('working_dir', None)
        return self.run_bzr_captured(args, retcode=retcode, encoding=encoding,
                                     stdin=stdin, working_dir=working_dir)

    def run_bzr_decode(self, *args, **kwargs):
        if 'encoding' in kwargs:
            encoding = kwargs['encoding']
        else:
            encoding = bzrlib.user_encoding
        return self.run_bzr(*args, **kwargs)[0].decode(encoding)

    def run_bzr_error(self, error_regexes, *args, **kwargs):
        """Run bzr, and check that stderr contains the supplied regexes
        
        :param error_regexes: Sequence of regular expressions which 
            must each be found in the error output. The relative ordering
            is not enforced.
        :param args: command-line arguments for bzr
        :param kwargs: Keyword arguments which are interpreted by run_bzr
            This function changes the default value of retcode to be 3,
            since in most cases this is run when you expect bzr to fail.
        :return: (out, err) The actual output of running the command (in case you
                 want to do more inspection)

        Examples of use:
            # Make sure that commit is failing because there is nothing to do
            self.run_bzr_error(['no changes to commit'],
                               'commit', '-m', 'my commit comment')
            # Make sure --strict is handling an unknown file, rather than
            # giving us the 'nothing to do' error
            self.build_tree(['unknown'])
            self.run_bzr_error(['Commit refused because there are unknown files'],
                               'commit', '--strict', '-m', 'my commit comment')
        """
        kwargs.setdefault('retcode', 3)
        out, err = self.run_bzr(*args, **kwargs)
        for regex in error_regexes:
            self.assertContainsRe(err, regex)
        return out, err

    def run_bzr_subprocess(self, *args, **kwargs):
        """Run bzr in a subprocess for testing.

        This starts a new Python interpreter and runs bzr in there. 
        This should only be used for tests that have a justifiable need for
        this isolation: e.g. they are testing startup time, or signal
        handling, or early startup code, etc.  Subprocess code can't be 
        profiled or debugged so easily.

        :param retcode: The status code that is expected.  Defaults to 0.  If
            None is supplied, the status code is not checked.
        :param env_changes: A dictionary which lists changes to environment
            variables. A value of None will unset the env variable.
            The values must be strings. The change will only occur in the
            child, so you don't need to fix the environment after running.
        :param universal_newlines: Convert CRLF => LF
        :param allow_plugins: By default the subprocess is run with
            --no-plugins to ensure test reproducibility. Also, it is possible
            for system-wide plugins to create unexpected output on stderr,
            which can cause unnecessary test failures.
        """
        env_changes = kwargs.get('env_changes', {})
        working_dir = kwargs.get('working_dir', None)
        allow_plugins = kwargs.get('allow_plugins', False)
        process = self.start_bzr_subprocess(args, env_changes=env_changes,
                                            working_dir=working_dir,
                                            allow_plugins=allow_plugins)
        # We distinguish between retcode=None and retcode not passed.
        supplied_retcode = kwargs.get('retcode', 0)
        return self.finish_bzr_subprocess(process, retcode=supplied_retcode,
            universal_newlines=kwargs.get('universal_newlines', False),
            process_args=args)

    def start_bzr_subprocess(self, process_args, env_changes=None,
                             skip_if_plan_to_signal=False,
                             working_dir=None,
                             allow_plugins=False):
        """Start bzr in a subprocess for testing.

        This starts a new Python interpreter and runs bzr in there.
        This should only be used for tests that have a justifiable need for
        this isolation: e.g. they are testing startup time, or signal
        handling, or early startup code, etc.  Subprocess code can't be
        profiled or debugged so easily.

        :param process_args: a list of arguments to pass to the bzr executable,
            for example `['--version']`.
        :param env_changes: A dictionary which lists changes to environment
            variables. A value of None will unset the env variable.
            The values must be strings. The change will only occur in the
            child, so you don't need to fix the environment after running.
        :param skip_if_plan_to_signal: raise TestSkipped when true and os.kill
            is not available.
        :param allow_plugins: If False (default) pass --no-plugins to bzr.

        :returns: Popen object for the started process.
        """
        if skip_if_plan_to_signal:
            if not getattr(os, 'kill', None):
                raise TestSkipped("os.kill not available.")

        if env_changes is None:
            env_changes = {}
        old_env = {}

        def cleanup_environment():
            for env_var, value in env_changes.iteritems():
                old_env[env_var] = osutils.set_or_unset_env(env_var, value)

        def restore_environment():
            for env_var, value in old_env.iteritems():
                osutils.set_or_unset_env(env_var, value)

        bzr_path = self.get_bzr_path()

        cwd = None
        if working_dir is not None:
            cwd = osutils.getcwd()
            os.chdir(working_dir)

        try:
            # win32 subprocess doesn't support preexec_fn
            # so we will avoid using it on all platforms, just to
            # make sure the code path is used, and we don't break on win32
            cleanup_environment()
            command = [sys.executable, bzr_path]
            if not allow_plugins:
                command.append('--no-plugins')
            command.extend(process_args)
            process = self._popen(command, stdin=PIPE, stdout=PIPE, stderr=PIPE)
        finally:
            restore_environment()
            if cwd is not None:
                os.chdir(cwd)

        return process

    def _popen(self, *args, **kwargs):
        """Place a call to Popen.

        Allows tests to override this method to intercept the calls made to
        Popen for introspection.
        """
        return Popen(*args, **kwargs)

    def get_bzr_path(self):
        """Return the path of the 'bzr' executable for this test suite."""
        bzr_path = os.path.dirname(os.path.dirname(bzrlib.__file__))+'/bzr'
        if not os.path.isfile(bzr_path):
            # We are probably installed. Assume sys.argv is the right file
            bzr_path = sys.argv[0]
        return bzr_path

    def finish_bzr_subprocess(self, process, retcode=0, send_signal=None,
                              universal_newlines=False, process_args=None):
        """Finish the execution of process.

        :param process: the Popen object returned from start_bzr_subprocess.
        :param retcode: The status code that is expected.  Defaults to 0.  If
            None is supplied, the status code is not checked.
        :param send_signal: an optional signal to send to the process.
        :param universal_newlines: Convert CRLF => LF
        :returns: (stdout, stderr)
        """
        if send_signal is not None:
            os.kill(process.pid, send_signal)
        out, err = process.communicate()

        if universal_newlines:
            out = out.replace('\r\n', '\n')
            err = err.replace('\r\n', '\n')

        if retcode is not None and retcode != process.returncode:
            if process_args is None:
                process_args = "(unknown args)"
            mutter('Output of bzr %s:\n%s', process_args, out)
            mutter('Error for bzr %s:\n%s', process_args, err)
            self.fail('Command bzr %s failed with retcode %s != %s'
                      % (process_args, retcode, process.returncode))
        return [out, err]

    def check_inventory_shape(self, inv, shape):
        """Compare an inventory to a list of expected names.

        Fail if they are not precisely equal.
        """
        extras = []
        shape = list(shape)             # copy
        for path, ie in inv.entries():
            name = path.replace('\\', '/')
            if ie.kind == 'dir':
                name = name + '/'
            if name in shape:
                shape.remove(name)
            else:
                extras.append(name)
        if shape:
            self.fail("expected paths not found in inventory: %r" % shape)
        if extras:
            self.fail("unexpected paths found in inventory: %r" % extras)

    def apply_redirected(self, stdin=None, stdout=None, stderr=None,
                         a_callable=None, *args, **kwargs):
        """Call callable with redirected std io pipes.

        Returns the return code."""
        if not callable(a_callable):
            raise ValueError("a_callable must be callable.")
        if stdin is None:
            stdin = StringIO("")
        if stdout is None:
            if getattr(self, "_log_file", None) is not None:
                stdout = self._log_file
            else:
                stdout = StringIO()
        if stderr is None:
            if getattr(self, "_log_file", None is not None):
                stderr = self._log_file
            else:
                stderr = StringIO()
        real_stdin = sys.stdin
        real_stdout = sys.stdout
        real_stderr = sys.stderr
        try:
            sys.stdout = stdout
            sys.stderr = stderr
            sys.stdin = stdin
            return a_callable(*args, **kwargs)
        finally:
            sys.stdout = real_stdout
            sys.stderr = real_stderr
            sys.stdin = real_stdin

    @symbol_versioning.deprecated_method(symbol_versioning.zero_eleven)
    def merge(self, branch_from, wt_to):
        """A helper for tests to do a ui-less merge.

        This should move to the main library when someone has time to integrate
        it in.
        """
        # minimal ui-less merge.
        wt_to.branch.fetch(branch_from)
        base_rev = common_ancestor(branch_from.last_revision(),
                                   wt_to.branch.last_revision(),
                                   wt_to.branch.repository)
        merge_inner(wt_to.branch, branch_from.basis_tree(),
                    wt_to.branch.repository.revision_tree(base_rev),
                    this_tree=wt_to)
        wt_to.add_parent_tree_id(branch_from.last_revision())


BzrTestBase = TestCase


class TestCaseWithMemoryTransport(TestCase):
    """Common test class for tests that do not need disk resources.

    Tests that need disk resources should derive from TestCaseWithTransport.

    TestCaseWithMemoryTransport sets the TEST_ROOT variable for all bzr tests.

    For TestCaseWithMemoryTransport the test_home_dir is set to the name of
    a directory which does not exist. This serves to help ensure test isolation
    is preserved. test_dir is set to the TEST_ROOT, as is cwd, because they
    must exist. However, TestCaseWithMemoryTransport does not offer local
    file defaults for the transport in tests, nor does it obey the command line
    override, so tests that accidentally write to the common directory should
    be rare.
    """

    TEST_ROOT = None
    _TEST_NAME = 'test'


    def __init__(self, methodName='runTest'):
        # allow test parameterisation after test construction and before test
        # execution. Variables that the parameteriser sets need to be 
        # ones that are not set by setUp, or setUp will trash them.
        super(TestCaseWithMemoryTransport, self).__init__(methodName)
        self.transport_server = default_transport
        self.transport_readonly_server = None

    def get_transport(self):
        """Return a writeable transport for the test scratch space"""
        t = get_transport(self.get_url())
        self.assertFalse(t.is_readonly())
        return t

    def get_readonly_transport(self):
        """Return a readonly transport for the test scratch space
        
        This can be used to test that operations which should only need
        readonly access in fact do not try to write.
        """
        t = get_transport(self.get_readonly_url())
        self.assertTrue(t.is_readonly())
        return t

    def create_transport_readonly_server(self):
        """Create a transport server from class defined at init.

        This is mostly a hook for daughter classes.
        """
        return self.transport_readonly_server()

    def get_readonly_server(self):
        """Get the server instance for the readonly transport

        This is useful for some tests with specific servers to do diagnostics.
        """
        if self.__readonly_server is None:
            if self.transport_readonly_server is None:
                # readonly decorator requested
                # bring up the server
                self.get_url()
                self.__readonly_server = ReadonlyServer()
                self.__readonly_server.setUp(self.__server)
            else:
                self.__readonly_server = self.create_transport_readonly_server()
                self.__readonly_server.setUp()
            self.addCleanup(self.__readonly_server.tearDown)
        return self.__readonly_server

    def get_readonly_url(self, relpath=None):
        """Get a URL for the readonly transport.

        This will either be backed by '.' or a decorator to the transport 
        used by self.get_url()
        relpath provides for clients to get a path relative to the base url.
        These should only be downwards relative, not upwards.
        """
        base = self.get_readonly_server().get_url()
        if relpath is not None:
            if not base.endswith('/'):
                base = base + '/'
            base = base + relpath
        return base

    def get_server(self):
        """Get the read/write server instance.

        This is useful for some tests with specific servers that need
        diagnostics.

        For TestCaseWithMemoryTransport this is always a MemoryServer, and there
        is no means to override it.
        """
        if self.__server is None:
            self.__server = MemoryServer()
            self.__server.setUp()
            self.addCleanup(self.__server.tearDown)
        return self.__server

    def get_url(self, relpath=None):
        """Get a URL (or maybe a path) for the readwrite transport.

        This will either be backed by '.' or to an equivalent non-file based
        facility.
        relpath provides for clients to get a path relative to the base url.
        These should only be downwards relative, not upwards.
        """
        base = self.get_server().get_url()
        if relpath is not None and relpath != '.':
            if not base.endswith('/'):
                base = base + '/'
            # XXX: Really base should be a url; we did after all call
            # get_url()!  But sometimes it's just a path (from
            # LocalAbspathServer), and it'd be wrong to append urlescaped data
            # to a non-escaped local path.
            if base.startswith('./') or base.startswith('/'):
                base += relpath
            else:
                base += urlutils.escape(relpath)
        return base

    def _make_test_root(self):
        if TestCaseWithMemoryTransport.TEST_ROOT is not None:
            return
        i = 0
        while True:
            root = u'test%04d.tmp' % i
            try:
                os.mkdir(root)
            except OSError, e:
                if e.errno == errno.EEXIST:
                    i += 1
                    continue
                else:
                    raise
            # successfully created
            TestCaseWithMemoryTransport.TEST_ROOT = osutils.abspath(root)
            break
        # make a fake bzr directory there to prevent any tests propagating
        # up onto the source directory's real branch
        bzrdir.BzrDir.create_standalone_workingtree(
            TestCaseWithMemoryTransport.TEST_ROOT)

    def makeAndChdirToTestDir(self):
        """Create a temporary directories for this one test.
        
        This must set self.test_home_dir and self.test_dir and chdir to
        self.test_dir.
        
        For TestCaseWithMemoryTransport we chdir to the TEST_ROOT for this test.
        """
        os.chdir(TestCaseWithMemoryTransport.TEST_ROOT)
        self.test_dir = TestCaseWithMemoryTransport.TEST_ROOT
        self.test_home_dir = self.test_dir + "/MemoryTransportMissingHomeDir"
        
    def make_branch(self, relpath, format=None):
        """Create a branch on the transport at relpath."""
        repo = self.make_repository(relpath, format=format)
        return repo.bzrdir.create_branch()

    def make_bzrdir(self, relpath, format=None):
        try:
            # might be a relative or absolute path
            maybe_a_url = self.get_url(relpath)
            segments = maybe_a_url.rsplit('/', 1)
            t = get_transport(maybe_a_url)
            if len(segments) > 1 and segments[-1] not in ('', '.'):
                try:
                    t.mkdir('.')
                except errors.FileExists:
                    pass
            if format is None:
                format = 'default'
            if isinstance(format, basestring):
                format = bzrdir.format_registry.make_bzrdir(format)
            return format.initialize_on_transport(t)
        except errors.UninitializableFormat:
            raise TestSkipped("Format %s is not initializable." % format)

    def make_repository(self, relpath, shared=False, format=None):
        """Create a repository on our default transport at relpath."""
        made_control = self.make_bzrdir(relpath, format=format)
        return made_control.create_repository(shared=shared)

    def make_branch_and_memory_tree(self, relpath, format=None):
        """Create a branch on the default transport and a MemoryTree for it."""
        b = self.make_branch(relpath, format=format)
        return memorytree.MemoryTree.create_on_branch(b)

    def overrideEnvironmentForTesting(self):
        os.environ['HOME'] = self.test_home_dir
        os.environ['BZR_HOME'] = self.test_home_dir
        
    def setUp(self):
        super(TestCaseWithMemoryTransport, self).setUp()
        self._make_test_root()
        _currentdir = os.getcwdu()
        def _leaveDirectory():
            os.chdir(_currentdir)
        self.addCleanup(_leaveDirectory)
        self.makeAndChdirToTestDir()
        self.overrideEnvironmentForTesting()
        self.__readonly_server = None
        self.__server = None

     
class TestCaseInTempDir(TestCaseWithMemoryTransport):
    """Derived class that runs a test within a temporary directory.

    This is useful for tests that need to create a branch, etc.

    The directory is created in a slightly complex way: for each
    Python invocation, a new temporary top-level directory is created.
    All test cases create their own directory within that.  If the
    tests complete successfully, the directory is removed.

    InTempDir is an old alias for FunctionalTestCase.
    """

    OVERRIDE_PYTHON = 'python'

    def check_file_contents(self, filename, expect):
        self.log("check contents of file %s" % filename)
        contents = file(filename, 'r').read()
        if contents != expect:
            self.log("expected: %r" % expect)
            self.log("actually: %r" % contents)
            self.fail("contents of %s not as expected" % filename)

    def makeAndChdirToTestDir(self):
        """See TestCaseWithMemoryTransport.makeAndChdirToTestDir().
        
        For TestCaseInTempDir we create a temporary directory based on the test
        name and then create two subdirs - test and home under it.
        """
        if NUMBERED_DIRS:       # strongly recommended on Windows
                                # due the path length limitation (260 chars)
            candidate_dir = '%s/%dK/%05d' % (self.TEST_ROOT,
                                             int(self.number/1000),
                                             self.number)
            os.makedirs(candidate_dir)
            self.test_home_dir = candidate_dir + '/home'
            os.mkdir(self.test_home_dir)
            self.test_dir = candidate_dir + '/work'
            os.mkdir(self.test_dir)
            os.chdir(self.test_dir)
            # put name of test inside
            f = file(candidate_dir + '/name', 'w')
            f.write(self.id())
            f.close()
            return
        # Else NAMED DIRS
        # shorten the name, to avoid test failures due to path length
        short_id = self.id().replace('bzrlib.tests.', '') \
                   .replace('__main__.', '')[-100:]
        # it's possible the same test class is run several times for
        # parameterized tests, so make sure the names don't collide.  
        i = 0
        while True:
            if i > 0:
                candidate_dir = '%s/%s.%d' % (self.TEST_ROOT, short_id, i)
            else:
                candidate_dir = '%s/%s' % (self.TEST_ROOT, short_id)
            if os.path.exists(candidate_dir):
                i = i + 1
                continue
            else:
                os.mkdir(candidate_dir)
                self.test_home_dir = candidate_dir + '/home'
                os.mkdir(self.test_home_dir)
                self.test_dir = candidate_dir + '/work'
                os.mkdir(self.test_dir)
                os.chdir(self.test_dir)
                break

    def build_tree(self, shape, line_endings='binary', transport=None):
        """Build a test tree according to a pattern.

        shape is a sequence of file specifications.  If the final
        character is '/', a directory is created.

        This assumes that all the elements in the tree being built are new.

        This doesn't add anything to a branch.
        :param line_endings: Either 'binary' or 'native'
                             in binary mode, exact contents are written
                             in native mode, the line endings match the
                             default platform endings.

        :param transport: A transport to write to, for building trees on 
                          VFS's. If the transport is readonly or None,
                          "." is opened automatically.
        """
        # It's OK to just create them using forward slashes on windows.
        if transport is None or transport.is_readonly():
            transport = get_transport(".")
        for name in shape:
            self.assert_(isinstance(name, basestring))
            if name[-1] == '/':
                transport.mkdir(urlutils.escape(name[:-1]))
            else:
                if line_endings == 'binary':
                    end = '\n'
                elif line_endings == 'native':
                    end = os.linesep
                else:
                    raise errors.BzrError(
                        'Invalid line ending request %r' % line_endings)
                content = "contents of %s%s" % (name.encode('utf-8'), end)
                transport.put_bytes_non_atomic(urlutils.escape(name), content)

    def build_tree_contents(self, shape):
        build_tree_contents(shape)

    def assertFileEqual(self, content, path):
        """Fail if path does not contain 'content'."""
        self.failUnlessExists(path)
        # TODO: jam 20060427 Shouldn't this be 'rb'?
        self.assertEqualDiff(content, open(path, 'r').read())

    def failUnlessExists(self, path):
        """Fail unless path, which may be abs or relative, exists."""
        self.failUnless(osutils.lexists(path),path+" does not exist")

    def failIfExists(self, path):
        """Fail if path, which may be abs or relative, exists."""
        self.failIf(osutils.lexists(path),path+" exists")


class TestCaseWithTransport(TestCaseInTempDir):
    """A test case that provides get_url and get_readonly_url facilities.

    These back onto two transport servers, one for readonly access and one for
    read write access.

    If no explicit class is provided for readonly access, a
    ReadonlyTransportDecorator is used instead which allows the use of non disk
    based read write transports.

    If an explicit class is provided for readonly access, that server and the 
    readwrite one must both define get_url() as resolving to os.getcwd().
    """

    def create_transport_server(self):
        """Create a transport server from class defined at init.

        This is mostly a hook for daughter classes.
        """
        return self.transport_server()

    def get_server(self):
        """See TestCaseWithMemoryTransport.

        This is useful for some tests with specific servers that need
        diagnostics.
        """
        if self.__server is None:
            self.__server = self.create_transport_server()
            self.__server.setUp()
            self.addCleanup(self.__server.tearDown)
        return self.__server

    def make_branch_and_tree(self, relpath, format=None):
        """Create a branch on the transport and a tree locally.

        If the transport is not a LocalTransport, the Tree can't be created on
        the transport.  In that case the working tree is created in the local
        directory, and the returned tree's branch and repository will also be
        accessed locally.

        This will fail if the original default transport for this test
        case wasn't backed by the working directory, as the branch won't
        be on disk for us to open it.  

        :param format: The BzrDirFormat.
        :returns: the WorkingTree.
        """
        # TODO: always use the local disk path for the working tree,
        # this obviously requires a format that supports branch references
        # so check for that by checking bzrdir.BzrDirFormat.get_default_format()
        # RBC 20060208
        b = self.make_branch(relpath, format=format)
        try:
            return b.bzrdir.create_workingtree()
        except errors.NotLocalUrl:
            # We can only make working trees locally at the moment.  If the
            # transport can't support them, then reopen the branch on a local
            # transport, and create the working tree there.  
            #
            # Possibly we should instead keep
            # the non-disk-backed branch and create a local checkout?
            bd = bzrdir.BzrDir.open(relpath)
            return bd.create_workingtree()

    def assertIsDirectory(self, relpath, transport):
        """Assert that relpath within transport is a directory.

        This may not be possible on all transports; in that case it propagates
        a TransportNotPossible.
        """
        try:
            mode = transport.stat(relpath).st_mode
        except errors.NoSuchFile:
            self.fail("path %s is not a directory; no such file"
                      % (relpath))
        if not stat.S_ISDIR(mode):
            self.fail("path %s is not a directory; has mode %#o"
                      % (relpath, mode))

    def assertTreesEqual(self, left, right):
        """Check that left and right have the same content and properties."""
        # we use a tree delta to check for equality of the content, and we
        # manually check for equality of other things such as the parents list.
        self.assertEqual(left.get_parent_ids(), right.get_parent_ids())
        differences = left.changes_from(right)
        self.assertFalse(differences.has_changed(),
            "Trees %r and %r are different: %r" % (left, right, differences))

    def setUp(self):
        super(TestCaseWithTransport, self).setUp()
        self.__server = None


class ChrootedTestCase(TestCaseWithTransport):
    """A support class that provides readonly urls outside the local namespace.

    This is done by checking if self.transport_server is a MemoryServer. if it
    is then we are chrooted already, if it is not then an HttpServer is used
    for readonly urls.

    TODO RBC 20060127: make this an option to TestCaseWithTransport so it can
                       be used without needed to redo it when a different 
                       subclass is in use ?
    """

    def setUp(self):
        super(ChrootedTestCase, self).setUp()
        if not self.transport_server == MemoryServer:
            self.transport_readonly_server = HttpServer


def filter_suite_by_re(suite, pattern):
    result = TestUtil.TestSuite()
    filter_re = re.compile(pattern)
    for test in iter_suite_tests(suite):
        if filter_re.search(test.id()):
            result.addTest(test)
    return result


def sort_suite_by_re(suite, pattern):
    first = []
    second = []
    filter_re = re.compile(pattern)
    for test in iter_suite_tests(suite):
        if filter_re.search(test.id()):
            first.append(test)
        else:
            second.append(test)
    return TestUtil.TestSuite(first + second)


def run_suite(suite, name='test', verbose=False, pattern=".*",
              stop_on_failure=False, keep_output=False,
              transport=None, lsprof_timed=None, bench_history=None,
              matching_tests_first=None,
              numbered_dirs=None):
    global NUMBERED_DIRS
    if numbered_dirs is not None:
        NUMBERED_DIRS = bool(numbered_dirs)

    TestCase._gather_lsprof_in_benchmarks = lsprof_timed
    if verbose:
        verbosity = 2
    else:
        verbosity = 1
    runner = TextTestRunner(stream=sys.stdout,
                            descriptions=0,
                            verbosity=verbosity,
                            keep_output=keep_output,
                            bench_history=bench_history)
    runner.stop_on_failure=stop_on_failure
    if pattern != '.*':
        if matching_tests_first:
            suite = sort_suite_by_re(suite, pattern)
        else:
            suite = filter_suite_by_re(suite, pattern)
    result = runner.run(suite)
    return result.wasSuccessful()


def selftest(verbose=False, pattern=".*", stop_on_failure=True,
             keep_output=False,
             transport=None,
             test_suite_factory=None,
             lsprof_timed=None,
             bench_history=None,
             matching_tests_first=None,
             numbered_dirs=None):
    """Run the whole test suite under the enhanced runner"""
    # XXX: Very ugly way to do this...
    # Disable warning about old formats because we don't want it to disturb
    # any blackbox tests.
    from bzrlib import repository
    repository._deprecation_warning_done = True

    global default_transport
    if transport is None:
        transport = default_transport
    old_transport = default_transport
    default_transport = transport
    try:
        if test_suite_factory is None:
            suite = test_suite()
        else:
            suite = test_suite_factory()
        return run_suite(suite, 'testbzr', verbose=verbose, pattern=pattern,
                     stop_on_failure=stop_on_failure, keep_output=keep_output,
                     transport=transport,
                     lsprof_timed=lsprof_timed,
                     bench_history=bench_history,
                     matching_tests_first=matching_tests_first,
                     numbered_dirs=numbered_dirs)
    finally:
        default_transport = old_transport


def test_suite():
    """Build and return TestSuite for the whole of bzrlib.
    
    This function can be replaced if you need to change the default test
    suite on a global basis, but it is not encouraged.
    """
    testmod_names = [
                   'bzrlib.tests.test_ancestry',
                   'bzrlib.tests.test_annotate',
                   'bzrlib.tests.test_api',
                   'bzrlib.tests.test_atomicfile',
                   'bzrlib.tests.test_bad_files',
                   'bzrlib.tests.test_branch',
                   'bzrlib.tests.test_bundle',
                   'bzrlib.tests.test_bzrdir',
                   'bzrlib.tests.test_cache_utf8',
                   'bzrlib.tests.test_commands',
                   'bzrlib.tests.test_commit',
                   'bzrlib.tests.test_commit_merge',
                   'bzrlib.tests.test_config',
                   'bzrlib.tests.test_conflicts',
                   'bzrlib.tests.test_decorators',
                   'bzrlib.tests.test_delta',
                   'bzrlib.tests.test_diff',
                   'bzrlib.tests.test_dirstate',
                   'bzrlib.tests.test_doc_generate',
                   'bzrlib.tests.test_errors',
                   'bzrlib.tests.test_escaped_store',
                   'bzrlib.tests.test_extract',
                   'bzrlib.tests.test_fetch',
                   'bzrlib.tests.test_ftp_transport',
                   'bzrlib.tests.test_generate_docs',
                   'bzrlib.tests.test_generate_ids',
                   'bzrlib.tests.test_globbing',
                   'bzrlib.tests.test_gpg',
                   'bzrlib.tests.test_graph',
                   'bzrlib.tests.test_hashcache',
                   'bzrlib.tests.test_http',
                   'bzrlib.tests.test_http_response',
                   'bzrlib.tests.test_https_ca_bundle',
                   'bzrlib.tests.test_identitymap',
                   'bzrlib.tests.test_ignores',
                   'bzrlib.tests.test_inv',
                   'bzrlib.tests.test_knit',
                   'bzrlib.tests.test_lazy_import',
                   'bzrlib.tests.test_lazy_regex',
                   'bzrlib.tests.test_lockdir',
                   'bzrlib.tests.test_lockable_files',
                   'bzrlib.tests.test_log',
                   'bzrlib.tests.test_memorytree',
                   'bzrlib.tests.test_merge',
                   'bzrlib.tests.test_merge3',
                   'bzrlib.tests.test_merge_core',
                   'bzrlib.tests.test_merge_directive',
                   'bzrlib.tests.test_missing',
                   'bzrlib.tests.test_msgeditor',
                   'bzrlib.tests.test_nonascii',
                   'bzrlib.tests.test_options',
                   'bzrlib.tests.test_osutils',
                   'bzrlib.tests.test_osutils_encodings',
                   'bzrlib.tests.test_patch',
                   'bzrlib.tests.test_patches',
                   'bzrlib.tests.test_permissions',
                   'bzrlib.tests.test_plugins',
                   'bzrlib.tests.test_progress',
                   'bzrlib.tests.test_reconcile',
                   'bzrlib.tests.test_registry',
                   'bzrlib.tests.test_repository',
                   'bzrlib.tests.test_revert',
                   'bzrlib.tests.test_revision',
                   'bzrlib.tests.test_revisionnamespaces',
                   'bzrlib.tests.test_revisiontree',
                   'bzrlib.tests.test_rio',
                   'bzrlib.tests.test_sampler',
                   'bzrlib.tests.test_selftest',
                   'bzrlib.tests.test_setup',
                   'bzrlib.tests.test_sftp_transport',
                   'bzrlib.tests.test_smart_add',
                   'bzrlib.tests.test_smart_transport',
                   'bzrlib.tests.test_source',
                   'bzrlib.tests.test_ssh_transport',
                   'bzrlib.tests.test_status',
                   'bzrlib.tests.test_store',
                   'bzrlib.tests.test_subsume',
                   'bzrlib.tests.test_symbol_versioning',
                   'bzrlib.tests.test_tag',
                   'bzrlib.tests.test_testament',
                   'bzrlib.tests.test_textfile',
                   'bzrlib.tests.test_textmerge',
                   'bzrlib.tests.test_timestamp',
                   'bzrlib.tests.test_trace',
                   'bzrlib.tests.test_transactions',
                   'bzrlib.tests.test_transform',
                   'bzrlib.tests.test_transport',
                   'bzrlib.tests.test_tree',
                   'bzrlib.tests.test_treebuilder',
                   'bzrlib.tests.test_tsort',
                   'bzrlib.tests.test_tuned_gzip',
                   'bzrlib.tests.test_ui',
                   'bzrlib.tests.test_upgrade',
                   'bzrlib.tests.test_urlutils',
                   'bzrlib.tests.test_versionedfile',
                   'bzrlib.tests.test_version',
                   'bzrlib.tests.test_version_info',
                   'bzrlib.tests.test_weave',
                   'bzrlib.tests.test_whitebox',
                   'bzrlib.tests.test_workingtree',
                   'bzrlib.tests.test_workingtree_4',
                   'bzrlib.tests.test_wsgi',
                   'bzrlib.tests.test_xml',
                   ]
    test_transport_implementations = [
        'bzrlib.tests.test_transport_implementations',
        'bzrlib.tests.test_read_bundle',
        ]
    suite = TestUtil.TestSuite()
    loader = TestUtil.TestLoader()
    suite.addTest(loader.loadTestsFromModuleNames(testmod_names))
    from bzrlib.transport import TransportTestProviderAdapter
    adapter = TransportTestProviderAdapter()
    adapt_modules(test_transport_implementations, adapter, loader, suite)
    for package in packages_to_test():
        suite.addTest(package.test_suite())
    for m in MODULES_TO_TEST:
        suite.addTest(loader.loadTestsFromModule(m))
    for m in MODULES_TO_DOCTEST:
        try:
            suite.addTest(doctest.DocTestSuite(m))
        except ValueError, e:
            print '**failed to get doctest for: %s\n%s' %(m,e)
            raise
    for name, plugin in bzrlib.plugin.all_plugins().items():
        if getattr(plugin, 'test_suite', None) is not None:
            default_encoding = sys.getdefaultencoding()
            try:
                plugin_suite = plugin.test_suite()
            except ImportError, e:
                bzrlib.trace.warning(
                    'Unable to test plugin "%s": %s', name, e)
            else:
                suite.addTest(plugin_suite)
            if default_encoding != sys.getdefaultencoding():
                bzrlib.trace.warning(
                    'Plugin "%s" tried to reset default encoding to: %s', name,
                    sys.getdefaultencoding())
                reload(sys)
                sys.setdefaultencoding(default_encoding)
    return suite


def adapt_modules(mods_list, adapter, loader, suite):
    """Adapt the modules in mods_list using adapter and add to suite."""
    for test in iter_suite_tests(loader.loadTestsFromModuleNames(mods_list)):
        suite.addTests(adapter.adapt(test))


def clean_selftest_output(root=None, quiet=False):
    """Remove all selftest output directories from root directory.

    :param  root:   root directory for clean
                    (if ommitted or None then clean current directory).
    :param  quiet:  suppress report about deleting directories
    """
    import re
    import shutil

    re_dir = re.compile(r'''test\d\d\d\d\.tmp''')
    if root is None:
        root = u'.'
    for i in os.listdir(root):
        if os.path.isdir(i) and re_dir.match(i):
            if not quiet:
                print 'delete directory:', i
            shutil.rmtree(i)