/usr/lib/python2.7/dist-packages/psycopg2/tests/test_connection.py is in python-psycopg2 2.6.1-1build2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | #!/usr/bin/env python
# test_connection.py - unit test for connection attributes
#
# Copyright (C) 2008-2011 James Henstridge <james@jamesh.id.au>
#
# psycopg2 is free software: you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# In addition, as a special exception, the copyright holders give
# permission to link this program with the OpenSSL library (or with
# modified versions of OpenSSL that use the same license as OpenSSL),
# and distribute linked combinations including the two.
#
# You must obey the GNU Lesser General Public License in all respects for
# all of the code used other than OpenSSL.
#
# psycopg2 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 Lesser General Public
# License for more details.
import os
import time
import threading
from operator import attrgetter
import psycopg2
import psycopg2.errorcodes
import psycopg2.extensions
from testutils import unittest, decorate_all_tests, skip_if_no_superuser
from testutils import skip_before_postgres, skip_after_postgres
from testutils import ConnectingTestCase, skip_if_tpc_disabled
from testutils import skip_if_windows
from testconfig import dsn, dbname
class ConnectionTests(ConnectingTestCase):
def test_closed_attribute(self):
conn = self.conn
self.assertEqual(conn.closed, False)
conn.close()
self.assertEqual(conn.closed, True)
def test_close_idempotent(self):
conn = self.conn
conn.close()
conn.close()
self.assert_(conn.closed)
def test_cursor_closed_attribute(self):
conn = self.conn
curs = conn.cursor()
self.assertEqual(curs.closed, False)
curs.close()
self.assertEqual(curs.closed, True)
# Closing the connection closes the cursor:
curs = conn.cursor()
conn.close()
self.assertEqual(curs.closed, True)
@skip_before_postgres(8, 4)
@skip_if_no_superuser
@skip_if_windows
def test_cleanup_on_badconn_close(self):
# ticket #148
conn = self.conn
cur = conn.cursor()
try:
cur.execute("select pg_terminate_backend(pg_backend_pid())")
except psycopg2.OperationalError, e:
if e.pgcode != psycopg2.errorcodes.ADMIN_SHUTDOWN:
raise
except psycopg2.DatabaseError, e:
# curiously when disconnected in green mode we get a DatabaseError
# without pgcode.
if e.pgcode is not None:
raise
self.assertEqual(conn.closed, 2)
conn.close()
self.assertEqual(conn.closed, 1)
def test_reset(self):
conn = self.conn
# switch isolation level, then reset
level = conn.isolation_level
conn.set_isolation_level(0)
self.assertEqual(conn.isolation_level, 0)
conn.reset()
# now the isolation level should be equal to saved one
self.assertEqual(conn.isolation_level, level)
def test_notices(self):
conn = self.conn
cur = conn.cursor()
if self.conn.server_version >= 90300:
cur.execute("set client_min_messages=debug1")
cur.execute("create temp table chatty (id serial primary key);")
self.assertEqual("CREATE TABLE", cur.statusmessage)
self.assert_(conn.notices)
def test_notices_consistent_order(self):
conn = self.conn
cur = conn.cursor()
if self.conn.server_version >= 90300:
cur.execute("set client_min_messages=debug1")
cur.execute("create temp table table1 (id serial); create temp table table2 (id serial);")
cur.execute("create temp table table3 (id serial); create temp table table4 (id serial);")
self.assertEqual(4, len(conn.notices))
self.assert_('table1' in conn.notices[0])
self.assert_('table2' in conn.notices[1])
self.assert_('table3' in conn.notices[2])
self.assert_('table4' in conn.notices[3])
def test_notices_limited(self):
conn = self.conn
cur = conn.cursor()
if self.conn.server_version >= 90300:
cur.execute("set client_min_messages=debug1")
for i in range(0, 100, 10):
sql = " ".join(["create temp table table%d (id serial);" % j for j in range(i, i+10)])
cur.execute(sql)
self.assertEqual(50, len(conn.notices))
self.assert_('table99' in conn.notices[-1], conn.notices[-1])
def test_server_version(self):
self.assert_(self.conn.server_version)
def test_protocol_version(self):
self.assert_(self.conn.protocol_version in (2,3),
self.conn.protocol_version)
def test_tpc_unsupported(self):
cnn = self.conn
if cnn.server_version >= 80100:
return self.skipTest("tpc is supported")
self.assertRaises(psycopg2.NotSupportedError,
cnn.xid, 42, "foo", "bar")
@skip_before_postgres(8, 2)
def test_concurrent_execution(self):
def slave():
cnn = self.connect()
cur = cnn.cursor()
cur.execute("select pg_sleep(4)")
cur.close()
cnn.close()
t1 = threading.Thread(target=slave)
t2 = threading.Thread(target=slave)
t0 = time.time()
t1.start()
t2.start()
t1.join()
t2.join()
self.assert_(time.time() - t0 < 7,
"something broken in concurrency")
def test_encoding_name(self):
self.conn.set_client_encoding("EUC_JP")
# conn.encoding is 'EUCJP' now.
cur = self.conn.cursor()
psycopg2.extensions.register_type(psycopg2.extensions.UNICODE, cur)
cur.execute("select 'foo'::text;")
self.assertEqual(cur.fetchone()[0], u'foo')
def test_connect_nonnormal_envvar(self):
# We must perform encoding normalization at connection time
self.conn.close()
oldenc = os.environ.get('PGCLIENTENCODING')
os.environ['PGCLIENTENCODING'] = 'utf-8' # malformed spelling
try:
self.conn = self.connect()
finally:
if oldenc is not None:
os.environ['PGCLIENTENCODING'] = oldenc
else:
del os.environ['PGCLIENTENCODING']
def test_weakref(self):
from weakref import ref
import gc
conn = psycopg2.connect(dsn)
w = ref(conn)
conn.close()
del conn
gc.collect()
self.assert_(w() is None)
def test_commit_concurrency(self):
# The problem is the one reported in ticket #103. Because of bad
# status check, we commit even when a commit is already on its way.
# We can detect this condition by the warnings.
conn = self.conn
notices = []
stop = []
def committer():
while not stop:
conn.commit()
while conn.notices:
notices.append((2, conn.notices.pop()))
cur = conn.cursor()
t1 = threading.Thread(target=committer)
t1.start()
i = 1
for i in range(1000):
cur.execute("select %s;",(i,))
conn.commit()
while conn.notices:
notices.append((1, conn.notices.pop()))
# Stop the committer thread
stop.append(True)
self.assert_(not notices, "%d notices raised" % len(notices))
def test_connect_cursor_factory(self):
import psycopg2.extras
conn = self.connect(cursor_factory=psycopg2.extras.DictCursor)
cur = conn.cursor()
cur.execute("select 1 as a")
self.assertEqual(cur.fetchone()['a'], 1)
def test_cursor_factory(self):
self.assertEqual(self.conn.cursor_factory, None)
cur = self.conn.cursor()
cur.execute("select 1 as a")
self.assertRaises(TypeError, (lambda r: r['a']), cur.fetchone())
self.conn.cursor_factory = psycopg2.extras.DictCursor
self.assertEqual(self.conn.cursor_factory, psycopg2.extras.DictCursor)
cur = self.conn.cursor()
cur.execute("select 1 as a")
self.assertEqual(cur.fetchone()['a'], 1)
self.conn.cursor_factory = None
self.assertEqual(self.conn.cursor_factory, None)
cur = self.conn.cursor()
cur.execute("select 1 as a")
self.assertRaises(TypeError, (lambda r: r['a']), cur.fetchone())
def test_cursor_factory_none(self):
# issue #210
conn = self.connect()
cur = conn.cursor(cursor_factory=None)
self.assertEqual(type(cur), psycopg2.extensions.cursor)
conn = self.connect(cursor_factory=psycopg2.extras.DictCursor)
cur = conn.cursor(cursor_factory=None)
self.assertEqual(type(cur), psycopg2.extras.DictCursor)
def test_failed_init_status(self):
class SubConnection(psycopg2.extensions.connection):
def __init__(self, dsn):
try:
super(SubConnection, self).__init__(dsn)
except Exception:
pass
c = SubConnection("dbname=thereisnosuchdatabasemate password=foobar")
self.assert_(c.closed, "connection failed so it must be closed")
self.assert_('foobar' not in c.dsn, "password was not obscured")
class IsolationLevelsTestCase(ConnectingTestCase):
def setUp(self):
ConnectingTestCase.setUp(self)
conn = self.connect()
cur = conn.cursor()
try:
cur.execute("drop table isolevel;")
except psycopg2.ProgrammingError:
conn.rollback()
cur.execute("create table isolevel (id integer);")
conn.commit()
conn.close()
def test_isolation_level(self):
conn = self.connect()
self.assertEqual(
conn.isolation_level,
psycopg2.extensions.ISOLATION_LEVEL_READ_COMMITTED)
def test_encoding(self):
conn = self.connect()
self.assert_(conn.encoding in psycopg2.extensions.encodings)
def test_set_isolation_level(self):
conn = self.connect()
curs = conn.cursor()
levels = [
(None, psycopg2.extensions.ISOLATION_LEVEL_AUTOCOMMIT),
('read uncommitted', psycopg2.extensions.ISOLATION_LEVEL_READ_UNCOMMITTED),
('read committed', psycopg2.extensions.ISOLATION_LEVEL_READ_COMMITTED),
('repeatable read', psycopg2.extensions.ISOLATION_LEVEL_REPEATABLE_READ),
('serializable', psycopg2.extensions.ISOLATION_LEVEL_SERIALIZABLE),
]
for name, level in levels:
conn.set_isolation_level(level)
# the only values available on prehistoric PG versions
if conn.server_version < 80000:
if level in (
psycopg2.extensions.ISOLATION_LEVEL_READ_UNCOMMITTED,
psycopg2.extensions.ISOLATION_LEVEL_REPEATABLE_READ):
name, level = levels[levels.index((name, level)) + 1]
self.assertEqual(conn.isolation_level, level)
curs.execute('show transaction_isolation;')
got_name = curs.fetchone()[0]
if name is None:
curs.execute('show default_transaction_isolation;')
name = curs.fetchone()[0]
self.assertEqual(name, got_name)
conn.commit()
self.assertRaises(ValueError, conn.set_isolation_level, -1)
self.assertRaises(ValueError, conn.set_isolation_level, 5)
def test_set_isolation_level_abort(self):
conn = self.connect()
cur = conn.cursor()
self.assertEqual(psycopg2.extensions.TRANSACTION_STATUS_IDLE,
conn.get_transaction_status())
cur.execute("insert into isolevel values (10);")
self.assertEqual(psycopg2.extensions.TRANSACTION_STATUS_INTRANS,
conn.get_transaction_status())
conn.set_isolation_level(
psycopg2.extensions.ISOLATION_LEVEL_SERIALIZABLE)
self.assertEqual(psycopg2.extensions.TRANSACTION_STATUS_IDLE,
conn.get_transaction_status())
cur.execute("select count(*) from isolevel;")
self.assertEqual(0, cur.fetchone()[0])
cur.execute("insert into isolevel values (10);")
self.assertEqual(psycopg2.extensions.TRANSACTION_STATUS_INTRANS,
conn.get_transaction_status())
conn.set_isolation_level(
psycopg2.extensions.ISOLATION_LEVEL_AUTOCOMMIT)
self.assertEqual(psycopg2.extensions.TRANSACTION_STATUS_IDLE,
conn.get_transaction_status())
cur.execute("select count(*) from isolevel;")
self.assertEqual(0, cur.fetchone()[0])
cur.execute("insert into isolevel values (10);")
self.assertEqual(psycopg2.extensions.TRANSACTION_STATUS_IDLE,
conn.get_transaction_status())
conn.set_isolation_level(
psycopg2.extensions.ISOLATION_LEVEL_READ_COMMITTED)
self.assertEqual(psycopg2.extensions.TRANSACTION_STATUS_IDLE,
conn.get_transaction_status())
cur.execute("select count(*) from isolevel;")
self.assertEqual(1, cur.fetchone()[0])
def test_isolation_level_autocommit(self):
cnn1 = self.connect()
cnn2 = self.connect()
cnn2.set_isolation_level(psycopg2.extensions.ISOLATION_LEVEL_AUTOCOMMIT)
cur1 = cnn1.cursor()
cur1.execute("select count(*) from isolevel;")
self.assertEqual(0, cur1.fetchone()[0])
cnn1.commit()
cur2 = cnn2.cursor()
cur2.execute("insert into isolevel values (10);")
cur1.execute("select count(*) from isolevel;")
self.assertEqual(1, cur1.fetchone()[0])
def test_isolation_level_read_committed(self):
cnn1 = self.connect()
cnn2 = self.connect()
cnn2.set_isolation_level(psycopg2.extensions.ISOLATION_LEVEL_READ_COMMITTED)
cur1 = cnn1.cursor()
cur1.execute("select count(*) from isolevel;")
self.assertEqual(0, cur1.fetchone()[0])
cnn1.commit()
cur2 = cnn2.cursor()
cur2.execute("insert into isolevel values (10);")
cur1.execute("insert into isolevel values (20);")
cur2.execute("select count(*) from isolevel;")
self.assertEqual(1, cur2.fetchone()[0])
cnn1.commit()
cur2.execute("select count(*) from isolevel;")
self.assertEqual(2, cur2.fetchone()[0])
cur1.execute("select count(*) from isolevel;")
self.assertEqual(1, cur1.fetchone()[0])
cnn2.commit()
cur1.execute("select count(*) from isolevel;")
self.assertEqual(2, cur1.fetchone()[0])
def test_isolation_level_serializable(self):
cnn1 = self.connect()
cnn2 = self.connect()
cnn2.set_isolation_level(psycopg2.extensions.ISOLATION_LEVEL_SERIALIZABLE)
cur1 = cnn1.cursor()
cur1.execute("select count(*) from isolevel;")
self.assertEqual(0, cur1.fetchone()[0])
cnn1.commit()
cur2 = cnn2.cursor()
cur2.execute("insert into isolevel values (10);")
cur1.execute("insert into isolevel values (20);")
cur2.execute("select count(*) from isolevel;")
self.assertEqual(1, cur2.fetchone()[0])
cnn1.commit()
cur2.execute("select count(*) from isolevel;")
self.assertEqual(1, cur2.fetchone()[0])
cur1.execute("select count(*) from isolevel;")
self.assertEqual(1, cur1.fetchone()[0])
cnn2.commit()
cur1.execute("select count(*) from isolevel;")
self.assertEqual(2, cur1.fetchone()[0])
cur2.execute("select count(*) from isolevel;")
self.assertEqual(2, cur2.fetchone()[0])
def test_isolation_level_closed(self):
cnn = self.connect()
cnn.close()
self.assertRaises(psycopg2.InterfaceError, getattr,
cnn, 'isolation_level')
self.assertRaises(psycopg2.InterfaceError,
cnn.set_isolation_level, 0)
self.assertRaises(psycopg2.InterfaceError,
cnn.set_isolation_level, 1)
class ConnectionTwoPhaseTests(ConnectingTestCase):
def setUp(self):
ConnectingTestCase.setUp(self)
self.make_test_table()
self.clear_test_xacts()
def tearDown(self):
self.clear_test_xacts()
ConnectingTestCase.tearDown(self)
def clear_test_xacts(self):
"""Rollback all the prepared transaction in the testing db."""
cnn = self.connect()
cnn.set_isolation_level(0)
cur = cnn.cursor()
try:
cur.execute(
"select gid from pg_prepared_xacts where database = %s",
(dbname,))
except psycopg2.ProgrammingError:
cnn.rollback()
cnn.close()
return
gids = [ r[0] for r in cur ]
for gid in gids:
cur.execute("rollback prepared %s;", (gid,))
cnn.close()
def make_test_table(self):
cnn = self.connect()
cur = cnn.cursor()
try:
cur.execute("DROP TABLE test_tpc;")
except psycopg2.ProgrammingError:
cnn.rollback()
cur.execute("CREATE TABLE test_tpc (data text);")
cnn.commit()
cnn.close()
def count_xacts(self):
"""Return the number of prepared xacts currently in the test db."""
cnn = self.connect()
cur = cnn.cursor()
cur.execute("""
select count(*) from pg_prepared_xacts
where database = %s;""",
(dbname,))
rv = cur.fetchone()[0]
cnn.close()
return rv
def count_test_records(self):
"""Return the number of records in the test table."""
cnn = self.connect()
cur = cnn.cursor()
cur.execute("select count(*) from test_tpc;")
rv = cur.fetchone()[0]
cnn.close()
return rv
def test_tpc_commit(self):
cnn = self.connect()
xid = cnn.xid(1, "gtrid", "bqual")
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
cnn.tpc_begin(xid)
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_BEGIN)
cur = cnn.cursor()
cur.execute("insert into test_tpc values ('test_tpc_commit');")
self.assertEqual(0, self.count_xacts())
self.assertEqual(0, self.count_test_records())
cnn.tpc_prepare()
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_PREPARED)
self.assertEqual(1, self.count_xacts())
self.assertEqual(0, self.count_test_records())
cnn.tpc_commit()
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
self.assertEqual(0, self.count_xacts())
self.assertEqual(1, self.count_test_records())
def test_tpc_commit_one_phase(self):
cnn = self.connect()
xid = cnn.xid(1, "gtrid", "bqual")
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
cnn.tpc_begin(xid)
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_BEGIN)
cur = cnn.cursor()
cur.execute("insert into test_tpc values ('test_tpc_commit_1p');")
self.assertEqual(0, self.count_xacts())
self.assertEqual(0, self.count_test_records())
cnn.tpc_commit()
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
self.assertEqual(0, self.count_xacts())
self.assertEqual(1, self.count_test_records())
def test_tpc_commit_recovered(self):
cnn = self.connect()
xid = cnn.xid(1, "gtrid", "bqual")
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
cnn.tpc_begin(xid)
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_BEGIN)
cur = cnn.cursor()
cur.execute("insert into test_tpc values ('test_tpc_commit_rec');")
self.assertEqual(0, self.count_xacts())
self.assertEqual(0, self.count_test_records())
cnn.tpc_prepare()
cnn.close()
self.assertEqual(1, self.count_xacts())
self.assertEqual(0, self.count_test_records())
cnn = self.connect()
xid = cnn.xid(1, "gtrid", "bqual")
cnn.tpc_commit(xid)
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
self.assertEqual(0, self.count_xacts())
self.assertEqual(1, self.count_test_records())
def test_tpc_rollback(self):
cnn = self.connect()
xid = cnn.xid(1, "gtrid", "bqual")
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
cnn.tpc_begin(xid)
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_BEGIN)
cur = cnn.cursor()
cur.execute("insert into test_tpc values ('test_tpc_rollback');")
self.assertEqual(0, self.count_xacts())
self.assertEqual(0, self.count_test_records())
cnn.tpc_prepare()
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_PREPARED)
self.assertEqual(1, self.count_xacts())
self.assertEqual(0, self.count_test_records())
cnn.tpc_rollback()
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
self.assertEqual(0, self.count_xacts())
self.assertEqual(0, self.count_test_records())
def test_tpc_rollback_one_phase(self):
cnn = self.connect()
xid = cnn.xid(1, "gtrid", "bqual")
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
cnn.tpc_begin(xid)
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_BEGIN)
cur = cnn.cursor()
cur.execute("insert into test_tpc values ('test_tpc_rollback_1p');")
self.assertEqual(0, self.count_xacts())
self.assertEqual(0, self.count_test_records())
cnn.tpc_rollback()
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
self.assertEqual(0, self.count_xacts())
self.assertEqual(0, self.count_test_records())
def test_tpc_rollback_recovered(self):
cnn = self.connect()
xid = cnn.xid(1, "gtrid", "bqual")
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
cnn.tpc_begin(xid)
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_BEGIN)
cur = cnn.cursor()
cur.execute("insert into test_tpc values ('test_tpc_commit_rec');")
self.assertEqual(0, self.count_xacts())
self.assertEqual(0, self.count_test_records())
cnn.tpc_prepare()
cnn.close()
self.assertEqual(1, self.count_xacts())
self.assertEqual(0, self.count_test_records())
cnn = self.connect()
xid = cnn.xid(1, "gtrid", "bqual")
cnn.tpc_rollback(xid)
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
self.assertEqual(0, self.count_xacts())
self.assertEqual(0, self.count_test_records())
def test_status_after_recover(self):
cnn = self.connect()
self.assertEqual(psycopg2.extensions.STATUS_READY, cnn.status)
xns = cnn.tpc_recover()
self.assertEqual(psycopg2.extensions.STATUS_READY, cnn.status)
cur = cnn.cursor()
cur.execute("select 1")
self.assertEqual(psycopg2.extensions.STATUS_BEGIN, cnn.status)
xns = cnn.tpc_recover()
self.assertEqual(psycopg2.extensions.STATUS_BEGIN, cnn.status)
def test_recovered_xids(self):
# insert a few test xns
cnn = self.connect()
cnn.set_isolation_level(0)
cur = cnn.cursor()
cur.execute("begin; prepare transaction '1-foo';")
cur.execute("begin; prepare transaction '2-bar';")
# read the values to return
cur.execute("""
select gid, prepared, owner, database
from pg_prepared_xacts
where database = %s;""",
(dbname,))
okvals = cur.fetchall()
okvals.sort()
cnn = self.connect()
xids = cnn.tpc_recover()
xids = [ xid for xid in xids if xid.database == dbname ]
xids.sort(key=attrgetter('gtrid'))
# check the values returned
self.assertEqual(len(okvals), len(xids))
for (xid, (gid, prepared, owner, database)) in zip (xids, okvals):
self.assertEqual(xid.gtrid, gid)
self.assertEqual(xid.prepared, prepared)
self.assertEqual(xid.owner, owner)
self.assertEqual(xid.database, database)
def test_xid_encoding(self):
cnn = self.connect()
xid = cnn.xid(42, "gtrid", "bqual")
cnn.tpc_begin(xid)
cnn.tpc_prepare()
cnn = self.connect()
cur = cnn.cursor()
cur.execute("select gid from pg_prepared_xacts where database = %s;",
(dbname,))
self.assertEqual('42_Z3RyaWQ=_YnF1YWw=', cur.fetchone()[0])
def test_xid_roundtrip(self):
for fid, gtrid, bqual in [
(0, "", ""),
(42, "gtrid", "bqual"),
(0x7fffffff, "x" * 64, "y" * 64),
]:
cnn = self.connect()
xid = cnn.xid(fid, gtrid, bqual)
cnn.tpc_begin(xid)
cnn.tpc_prepare()
cnn.close()
cnn = self.connect()
xids = [ xid for xid in cnn.tpc_recover()
if xid.database == dbname ]
self.assertEqual(1, len(xids))
xid = xids[0]
self.assertEqual(xid.format_id, fid)
self.assertEqual(xid.gtrid, gtrid)
self.assertEqual(xid.bqual, bqual)
cnn.tpc_rollback(xid)
def test_unparsed_roundtrip(self):
for tid in [
'',
'hello, world!',
'x' * 199, # PostgreSQL's limit in transaction id length
]:
cnn = self.connect()
cnn.tpc_begin(tid)
cnn.tpc_prepare()
cnn.close()
cnn = self.connect()
xids = [ xid for xid in cnn.tpc_recover()
if xid.database == dbname ]
self.assertEqual(1, len(xids))
xid = xids[0]
self.assertEqual(xid.format_id, None)
self.assertEqual(xid.gtrid, tid)
self.assertEqual(xid.bqual, None)
cnn.tpc_rollback(xid)
def test_xid_construction(self):
from psycopg2.extensions import Xid
x1 = Xid(74, 'foo', 'bar')
self.assertEqual(74, x1.format_id)
self.assertEqual('foo', x1.gtrid)
self.assertEqual('bar', x1.bqual)
def test_xid_from_string(self):
from psycopg2.extensions import Xid
x2 = Xid.from_string('42_Z3RyaWQ=_YnF1YWw=')
self.assertEqual(42, x2.format_id)
self.assertEqual('gtrid', x2.gtrid)
self.assertEqual('bqual', x2.bqual)
x3 = Xid.from_string('99_xxx_yyy')
self.assertEqual(None, x3.format_id)
self.assertEqual('99_xxx_yyy', x3.gtrid)
self.assertEqual(None, x3.bqual)
def test_xid_to_string(self):
from psycopg2.extensions import Xid
x1 = Xid.from_string('42_Z3RyaWQ=_YnF1YWw=')
self.assertEqual(str(x1), '42_Z3RyaWQ=_YnF1YWw=')
x2 = Xid.from_string('99_xxx_yyy')
self.assertEqual(str(x2), '99_xxx_yyy')
def test_xid_unicode(self):
cnn = self.connect()
x1 = cnn.xid(10, u'uni', u'code')
cnn.tpc_begin(x1)
cnn.tpc_prepare()
cnn.reset()
xid = [ xid for xid in cnn.tpc_recover()
if xid.database == dbname ][0]
self.assertEqual(10, xid.format_id)
self.assertEqual('uni', xid.gtrid)
self.assertEqual('code', xid.bqual)
def test_xid_unicode_unparsed(self):
# We don't expect people shooting snowmen as transaction ids,
# so if something explodes in an encode error I don't mind.
# Let's just check uniconde is accepted as type.
cnn = self.connect()
cnn.set_client_encoding('utf8')
cnn.tpc_begin(u"transaction-id")
cnn.tpc_prepare()
cnn.reset()
xid = [ xid for xid in cnn.tpc_recover()
if xid.database == dbname ][0]
self.assertEqual(None, xid.format_id)
self.assertEqual('transaction-id', xid.gtrid)
self.assertEqual(None, xid.bqual)
def test_cancel_fails_prepared(self):
cnn = self.connect()
cnn.tpc_begin('cancel')
cnn.tpc_prepare()
self.assertRaises(psycopg2.ProgrammingError, cnn.cancel)
def test_tpc_recover_non_dbapi_connection(self):
from psycopg2.extras import RealDictConnection
cnn = self.connect(connection_factory=RealDictConnection)
cnn.tpc_begin('dict-connection')
cnn.tpc_prepare()
cnn.reset()
xids = cnn.tpc_recover()
xid = [ xid for xid in xids if xid.database == dbname ][0]
self.assertEqual(None, xid.format_id)
self.assertEqual('dict-connection', xid.gtrid)
self.assertEqual(None, xid.bqual)
decorate_all_tests(ConnectionTwoPhaseTests, skip_if_tpc_disabled)
class TransactionControlTests(ConnectingTestCase):
def test_closed(self):
self.conn.close()
self.assertRaises(psycopg2.InterfaceError,
self.conn.set_session,
psycopg2.extensions.ISOLATION_LEVEL_SERIALIZABLE)
def test_not_in_transaction(self):
cur = self.conn.cursor()
cur.execute("select 1")
self.assertRaises(psycopg2.ProgrammingError,
self.conn.set_session,
psycopg2.extensions.ISOLATION_LEVEL_SERIALIZABLE)
def test_set_isolation_level(self):
cur = self.conn.cursor()
self.conn.set_session(
psycopg2.extensions.ISOLATION_LEVEL_SERIALIZABLE)
cur.execute("SHOW default_transaction_isolation;")
self.assertEqual(cur.fetchone()[0], 'serializable')
self.conn.rollback()
self.conn.set_session(
psycopg2.extensions.ISOLATION_LEVEL_REPEATABLE_READ)
cur.execute("SHOW default_transaction_isolation;")
if self.conn.server_version > 80000:
self.assertEqual(cur.fetchone()[0], 'repeatable read')
else:
self.assertEqual(cur.fetchone()[0], 'serializable')
self.conn.rollback()
self.conn.set_session(
isolation_level=psycopg2.extensions.ISOLATION_LEVEL_READ_COMMITTED)
cur.execute("SHOW default_transaction_isolation;")
self.assertEqual(cur.fetchone()[0], 'read committed')
self.conn.rollback()
self.conn.set_session(
isolation_level=psycopg2.extensions.ISOLATION_LEVEL_READ_UNCOMMITTED)
cur.execute("SHOW default_transaction_isolation;")
if self.conn.server_version > 80000:
self.assertEqual(cur.fetchone()[0], 'read uncommitted')
else:
self.assertEqual(cur.fetchone()[0], 'read committed')
self.conn.rollback()
def test_set_isolation_level_str(self):
cur = self.conn.cursor()
self.conn.set_session("serializable")
cur.execute("SHOW default_transaction_isolation;")
self.assertEqual(cur.fetchone()[0], 'serializable')
self.conn.rollback()
self.conn.set_session("repeatable read")
cur.execute("SHOW default_transaction_isolation;")
if self.conn.server_version > 80000:
self.assertEqual(cur.fetchone()[0], 'repeatable read')
else:
self.assertEqual(cur.fetchone()[0], 'serializable')
self.conn.rollback()
self.conn.set_session("read committed")
cur.execute("SHOW default_transaction_isolation;")
self.assertEqual(cur.fetchone()[0], 'read committed')
self.conn.rollback()
self.conn.set_session("read uncommitted")
cur.execute("SHOW default_transaction_isolation;")
if self.conn.server_version > 80000:
self.assertEqual(cur.fetchone()[0], 'read uncommitted')
else:
self.assertEqual(cur.fetchone()[0], 'read committed')
self.conn.rollback()
def test_bad_isolation_level(self):
self.assertRaises(ValueError, self.conn.set_session, 0)
self.assertRaises(ValueError, self.conn.set_session, 5)
self.assertRaises(ValueError, self.conn.set_session, 'whatever')
def test_set_read_only(self):
cur = self.conn.cursor()
self.conn.set_session(readonly=True)
cur.execute("SHOW default_transaction_read_only;")
self.assertEqual(cur.fetchone()[0], 'on')
self.conn.rollback()
cur.execute("SHOW default_transaction_read_only;")
self.assertEqual(cur.fetchone()[0], 'on')
self.conn.rollback()
cur = self.conn.cursor()
self.conn.set_session(readonly=None)
cur.execute("SHOW default_transaction_read_only;")
self.assertEqual(cur.fetchone()[0], 'on')
self.conn.rollback()
self.conn.set_session(readonly=False)
cur.execute("SHOW default_transaction_read_only;")
self.assertEqual(cur.fetchone()[0], 'off')
self.conn.rollback()
def test_set_default(self):
cur = self.conn.cursor()
cur.execute("SHOW default_transaction_isolation;")
default_isolevel = cur.fetchone()[0]
cur.execute("SHOW default_transaction_read_only;")
default_readonly = cur.fetchone()[0]
self.conn.rollback()
self.conn.set_session(isolation_level='serializable', readonly=True)
self.conn.set_session(isolation_level='default', readonly='default')
cur.execute("SHOW default_transaction_isolation;")
self.assertEqual(cur.fetchone()[0], default_isolevel)
cur.execute("SHOW default_transaction_read_only;")
self.assertEqual(cur.fetchone()[0], default_readonly)
@skip_before_postgres(9, 1)
def test_set_deferrable(self):
cur = self.conn.cursor()
self.conn.set_session(readonly=True, deferrable=True)
cur.execute("SHOW default_transaction_read_only;")
self.assertEqual(cur.fetchone()[0], 'on')
cur.execute("SHOW default_transaction_deferrable;")
self.assertEqual(cur.fetchone()[0], 'on')
self.conn.rollback()
cur.execute("SHOW default_transaction_deferrable;")
self.assertEqual(cur.fetchone()[0], 'on')
self.conn.rollback()
self.conn.set_session(deferrable=False)
cur.execute("SHOW default_transaction_read_only;")
self.assertEqual(cur.fetchone()[0], 'on')
cur.execute("SHOW default_transaction_deferrable;")
self.assertEqual(cur.fetchone()[0], 'off')
self.conn.rollback()
@skip_after_postgres(9, 1)
def test_set_deferrable_error(self):
self.assertRaises(psycopg2.ProgrammingError,
self.conn.set_session, readonly=True, deferrable=True)
class AutocommitTests(ConnectingTestCase):
def test_closed(self):
self.conn.close()
self.assertRaises(psycopg2.InterfaceError,
setattr, self.conn, 'autocommit', True)
# The getter doesn't have a guard. We may change this in future
# to make it consistent with other methods; meanwhile let's just check
# it doesn't explode.
try:
self.assert_(self.conn.autocommit in (True, False))
except psycopg2.InterfaceError:
pass
def test_default_no_autocommit(self):
self.assert_(not self.conn.autocommit)
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)
self.assertEqual(self.conn.get_transaction_status(),
psycopg2.extensions.TRANSACTION_STATUS_IDLE)
cur = self.conn.cursor()
cur.execute('select 1;')
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_BEGIN)
self.assertEqual(self.conn.get_transaction_status(),
psycopg2.extensions.TRANSACTION_STATUS_INTRANS)
self.conn.rollback()
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)
self.assertEqual(self.conn.get_transaction_status(),
psycopg2.extensions.TRANSACTION_STATUS_IDLE)
def test_set_autocommit(self):
self.conn.autocommit = True
self.assert_(self.conn.autocommit)
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)
self.assertEqual(self.conn.get_transaction_status(),
psycopg2.extensions.TRANSACTION_STATUS_IDLE)
cur = self.conn.cursor()
cur.execute('select 1;')
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)
self.assertEqual(self.conn.get_transaction_status(),
psycopg2.extensions.TRANSACTION_STATUS_IDLE)
self.conn.autocommit = False
self.assert_(not self.conn.autocommit)
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)
self.assertEqual(self.conn.get_transaction_status(),
psycopg2.extensions.TRANSACTION_STATUS_IDLE)
cur.execute('select 1;')
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_BEGIN)
self.assertEqual(self.conn.get_transaction_status(),
psycopg2.extensions.TRANSACTION_STATUS_INTRANS)
def test_set_intrans_error(self):
cur = self.conn.cursor()
cur.execute('select 1;')
self.assertRaises(psycopg2.ProgrammingError,
setattr, self.conn, 'autocommit', True)
def test_set_session_autocommit(self):
self.conn.set_session(autocommit=True)
self.assert_(self.conn.autocommit)
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)
self.assertEqual(self.conn.get_transaction_status(),
psycopg2.extensions.TRANSACTION_STATUS_IDLE)
cur = self.conn.cursor()
cur.execute('select 1;')
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)
self.assertEqual(self.conn.get_transaction_status(),
psycopg2.extensions.TRANSACTION_STATUS_IDLE)
self.conn.set_session(autocommit=False)
self.assert_(not self.conn.autocommit)
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)
self.assertEqual(self.conn.get_transaction_status(),
psycopg2.extensions.TRANSACTION_STATUS_IDLE)
cur.execute('select 1;')
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_BEGIN)
self.assertEqual(self.conn.get_transaction_status(),
psycopg2.extensions.TRANSACTION_STATUS_INTRANS)
self.conn.rollback()
self.conn.set_session('serializable', readonly=True, autocommit=True)
self.assert_(self.conn.autocommit)
cur.execute('select 1;')
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)
self.assertEqual(self.conn.get_transaction_status(),
psycopg2.extensions.TRANSACTION_STATUS_IDLE)
cur.execute("SHOW default_transaction_isolation;")
self.assertEqual(cur.fetchone()[0], 'serializable')
cur.execute("SHOW default_transaction_read_only;")
self.assertEqual(cur.fetchone()[0], 'on')
def test_suite():
return unittest.TestLoader().loadTestsFromName(__name__)
if __name__ == "__main__":
unittest.main()
|