modernc.org/cc@v1.0.1/v2/testdata/_sqlite/test/wal.test (about) 1 # 2010 April 13 2 # 3 # The author disclaims copyright to this source code. In place of 4 # a legal notice, here is a blessing: 5 # 6 # May you do good and not evil. 7 # May you find forgiveness for yourself and forgive others. 8 # May you share freely, never taking more than you give. 9 # 10 #*********************************************************************** 11 # This file implements regression tests for SQLite library. The 12 # focus of this file is testing the operation of the library in 13 # "PRAGMA journal_mode=WAL" mode. 14 # 15 16 set testdir [file dirname $argv0] 17 source $testdir/tester.tcl 18 source $testdir/lock_common.tcl 19 source $testdir/malloc_common.tcl 20 source $testdir/wal_common.tcl 21 22 set testprefix wal 23 24 ifcapable !wal {finish_test ; return } 25 test_set_config_pagecache 0 0 26 27 proc reopen_db {} { 28 catch { db close } 29 forcedelete test.db test.db-wal test.db-wal-summary 30 sqlite3_wal db test.db 31 } 32 33 set ::blobcnt 0 34 proc blob {nByte} { 35 incr ::blobcnt 36 return [string range [string repeat "${::blobcnt}x" $nByte] 1 $nByte] 37 } 38 39 proc sqlite3_wal {args} { 40 eval sqlite3 $args 41 [lindex $args 0] eval { PRAGMA auto_vacuum = 0 } 42 [lindex $args 0] eval { PRAGMA page_size = 1024 } 43 [lindex $args 0] eval { PRAGMA journal_mode = wal } 44 [lindex $args 0] eval { PRAGMA synchronous = normal } 45 [lindex $args 0] function blob blob 46 } 47 48 proc log_deleted {logfile} { 49 return [expr [file exists $logfile]==0] 50 } 51 52 # 53 # These are 'warm-body' tests used while developing the WAL code. They 54 # serve to prove that a few really simple cases work: 55 # 56 # wal-1.*: Read and write the database. 57 # wal-2.*: Test MVCC with one reader, one writer. 58 # wal-3.*: Test transaction rollback. 59 # wal-4.*: Test savepoint/statement rollback. 60 # wal-5.*: Test the temp database. 61 # wal-6.*: Test creating databases with different page sizes. 62 # 63 # 64 # 65 do_test wal-0.1 { 66 execsql { PRAGMA auto_vacuum = 0 } 67 execsql { PRAGMA synchronous = normal } 68 execsql { PRAGMA journal_mode = wal } 69 } {wal} 70 do_test wal-0.2 { 71 file size test.db 72 } {1024} 73 74 do_test wal-1.0 { 75 execsql { 76 BEGIN; 77 CREATE TABLE t1(a, b); 78 } 79 list [file exists test.db-journal] \ 80 [file exists test.db-wal] \ 81 [file size test.db] 82 } {0 1 1024} 83 do_test wal-1.1 { 84 execsql COMMIT 85 list [file exists test.db-journal] [file exists test.db-wal] 86 } {0 1} 87 do_test wal-1.2 { 88 # There are now two pages in the log. 89 file size test.db-wal 90 } [wal_file_size 2 1024] 91 92 do_test wal-1.3 { 93 execsql { SELECT * FROM sqlite_master } 94 } {table t1 t1 2 {CREATE TABLE t1(a, b)}} 95 96 do_test wal-1.4 { 97 execsql { INSERT INTO t1 VALUES(1, 2) } 98 execsql { INSERT INTO t1 VALUES(3, 4) } 99 execsql { INSERT INTO t1 VALUES(5, 6) } 100 execsql { INSERT INTO t1 VALUES(7, 8) } 101 execsql { INSERT INTO t1 VALUES(9, 10) } 102 } {} 103 104 do_test wal-1.5 { 105 execsql { SELECT * FROM t1 } 106 } {1 2 3 4 5 6 7 8 9 10} 107 108 do_test wal-2.1 { 109 sqlite3_wal db2 ./test.db 110 execsql { BEGIN; SELECT * FROM t1 } db2 111 } {1 2 3 4 5 6 7 8 9 10} 112 113 do_test wal-2.2 { 114 execsql { INSERT INTO t1 VALUES(11, 12) } 115 execsql { SELECT * FROM t1 } 116 } {1 2 3 4 5 6 7 8 9 10 11 12} 117 118 do_test wal-2.3 { 119 execsql { SELECT * FROM t1 } db2 120 } {1 2 3 4 5 6 7 8 9 10} 121 122 do_test wal-2.4 { 123 execsql { INSERT INTO t1 VALUES(13, 14) } 124 execsql { SELECT * FROM t1 } 125 } {1 2 3 4 5 6 7 8 9 10 11 12 13 14} 126 127 do_test wal-2.5 { 128 execsql { SELECT * FROM t1 } db2 129 } {1 2 3 4 5 6 7 8 9 10} 130 131 do_test wal-2.6 { 132 execsql { COMMIT; SELECT * FROM t1 } db2 133 } {1 2 3 4 5 6 7 8 9 10 11 12 13 14} 134 135 do_test wal-3.1 { 136 execsql { BEGIN; DELETE FROM t1 } 137 execsql { SELECT * FROM t1 } 138 } {} 139 do_test wal-3.2 { 140 execsql { SELECT * FROM t1 } db2 141 } {1 2 3 4 5 6 7 8 9 10 11 12 13 14} 142 do_test wal-3.3 { 143 execsql { ROLLBACK } 144 execsql { SELECT * FROM t1 } 145 } {1 2 3 4 5 6 7 8 9 10 11 12 13 14} 146 db2 close 147 148 #------------------------------------------------------------------------- 149 # The following tests, wal-4.*, test that savepoints work with WAL 150 # databases. 151 # 152 do_test wal-4.1 { 153 execsql { 154 DELETE FROM t1; 155 BEGIN; 156 INSERT INTO t1 VALUES('a', 'b'); 157 SAVEPOINT sp; 158 INSERT INTO t1 VALUES('c', 'd'); 159 SELECT * FROM t1; 160 } 161 } {a b c d} 162 do_test wal-4.2 { 163 execsql { 164 ROLLBACK TO sp; 165 SELECT * FROM t1; 166 } 167 } {a b} 168 do_test wal-4.3 { 169 execsql { 170 COMMIT; 171 SELECT * FROM t1; 172 } 173 } {a b} 174 175 do_test wal-4.4.1 { 176 db close 177 sqlite3 db test.db 178 db func blob blob 179 list [execsql { SELECT * FROM t1 }] [file size test.db-wal] 180 } {{a b} 0} 181 do_test wal-4.4.2 { 182 execsql { PRAGMA cache_size = 10 } 183 execsql { 184 CREATE TABLE t2(a, b); 185 INSERT INTO t2 VALUES(blob(400), blob(400)); 186 SAVEPOINT tr; 187 INSERT INTO t2 SELECT blob(400), blob(400) FROM t2; /* 2 */ 188 INSERT INTO t2 SELECT blob(400), blob(400) FROM t2; /* 4 */ 189 INSERT INTO t2 SELECT blob(400), blob(400) FROM t2; /* 8 */ 190 INSERT INTO t2 SELECT blob(400), blob(400) FROM t2; /* 16 */ 191 INSERT INTO t2 SELECT blob(400), blob(400) FROM t2; /* 32 */ 192 INSERT INTO t1 SELECT blob(400), blob(400) FROM t1; /* 2 */ 193 INSERT INTO t1 SELECT blob(400), blob(400) FROM t1; /* 4 */ 194 INSERT INTO t1 SELECT blob(400), blob(400) FROM t1; /* 8 */ 195 INSERT INTO t1 SELECT blob(400), blob(400) FROM t1; /* 16 */ 196 INSERT INTO t1 SELECT blob(400), blob(400) FROM t1; /* 32 */ 197 SELECT count(*) FROM t2; 198 } 199 } {32} 200 do_test wal-4.4.3 { 201 execsql { ROLLBACK TO tr } 202 } {} 203 do_test wal-4.4.4 { 204 set logsize [file size test.db-wal] 205 execsql { 206 INSERT INTO t1 VALUES('x', 'y'); 207 RELEASE tr; 208 } 209 expr { $logsize == [file size test.db-wal] } 210 } {1} 211 do_test wal-4.4.5 { 212 execsql { SELECT count(*) FROM t2 } 213 } {1} 214 do_test wal-4.4.6 { 215 forcecopy test.db test2.db 216 forcecopy test.db-wal test2.db-wal 217 sqlite3 db2 test2.db 218 execsql { SELECT count(*) FROM t2 ; SELECT count(*) FROM t1 } db2 219 } {1 2} 220 do_test wal-4.4.7 { 221 execsql { PRAGMA integrity_check } db2 222 } {ok} 223 db2 close 224 225 do_test wal-4.5.1 { 226 reopen_db 227 db func blob blob 228 execsql { 229 PRAGMA journal_mode = WAL; 230 CREATE TABLE t1(a, b); 231 INSERT INTO t1 VALUES('a', 'b'); 232 } 233 sqlite3 db test.db 234 db func blob blob 235 list [execsql { SELECT * FROM t1 }] [file size test.db-wal] 236 } {{a b} 0} 237 do_test wal-4.5.2 { 238 execsql { PRAGMA cache_size = 10 } 239 execsql { 240 CREATE TABLE t2(a, b); 241 BEGIN; 242 INSERT INTO t2 VALUES(blob(400), blob(400)); 243 SAVEPOINT tr; 244 INSERT INTO t2 SELECT blob(400), blob(400) FROM t2; /* 2 */ 245 INSERT INTO t2 SELECT blob(400), blob(400) FROM t2; /* 4 */ 246 INSERT INTO t2 SELECT blob(400), blob(400) FROM t2; /* 8 */ 247 INSERT INTO t2 SELECT blob(400), blob(400) FROM t2; /* 16 */ 248 INSERT INTO t2 SELECT blob(400), blob(400) FROM t2; /* 32 */ 249 INSERT INTO t1 SELECT blob(400), blob(400) FROM t1; /* 2 */ 250 INSERT INTO t1 SELECT blob(400), blob(400) FROM t1; /* 4 */ 251 INSERT INTO t1 SELECT blob(400), blob(400) FROM t1; /* 8 */ 252 INSERT INTO t1 SELECT blob(400), blob(400) FROM t1; /* 16 */ 253 INSERT INTO t1 SELECT blob(400), blob(400) FROM t1; /* 32 */ 254 SELECT count(*) FROM t2; 255 } 256 } {32} 257 do_test wal-4.5.3 { 258 execsql { ROLLBACK TO tr } 259 } {} 260 do_test wal-4.5.4 { 261 set logsize [file size test.db-wal] 262 execsql { 263 INSERT INTO t1 VALUES('x', 'y'); 264 RELEASE tr; 265 COMMIT; 266 } 267 expr { $logsize == [file size test.db-wal] } 268 } {1} 269 do_test wal-4.5.5 { 270 execsql { SELECT count(*) FROM t2 ; SELECT count(*) FROM t1 } 271 } {1 2} 272 do_test wal-4.5.6 { 273 forcecopy test.db test2.db 274 forcecopy test.db-wal test2.db-wal 275 sqlite3 db2 test2.db 276 execsql { SELECT count(*) FROM t2 ; SELECT count(*) FROM t1 } db2 277 } {1 2} 278 do_test wal-4.5.7 { 279 execsql { PRAGMA integrity_check } db2 280 } {ok} 281 db2 close 282 283 do_test wal-4.6.1 { 284 execsql { 285 DELETE FROM t2; 286 PRAGMA wal_checkpoint; 287 BEGIN; 288 INSERT INTO t2 VALUES('w', 'x'); 289 SAVEPOINT save; 290 INSERT INTO t2 VALUES('y', 'z'); 291 ROLLBACK TO save; 292 COMMIT; 293 } 294 execsql { SELECT * FROM t2 } 295 } {w x} 296 297 298 reopen_db 299 do_test wal-5.1 { 300 execsql { 301 CREATE TEMP TABLE t2(a, b); 302 INSERT INTO t2 VALUES(1, 2); 303 } 304 } {} 305 do_test wal-5.2 { 306 execsql { 307 BEGIN; 308 INSERT INTO t2 VALUES(3, 4); 309 SELECT * FROM t2; 310 } 311 } {1 2 3 4} 312 do_test wal-5.3 { 313 execsql { 314 ROLLBACK; 315 SELECT * FROM t2; 316 } 317 } {1 2} 318 do_test wal-5.4 { 319 execsql { 320 CREATE TEMP TABLE t3(x UNIQUE); 321 BEGIN; 322 INSERT INTO t2 VALUES(3, 4); 323 INSERT INTO t3 VALUES('abc'); 324 } 325 catchsql { INSERT INTO t3 VALUES('abc') } 326 } {1 {UNIQUE constraint failed: t3.x}} 327 do_test wal-5.5 { 328 execsql { 329 COMMIT; 330 SELECT * FROM t2; 331 } 332 } {1 2 3 4} 333 db close 334 335 foreach sector {512 4096} { 336 sqlite3_simulate_device -sectorsize $sector 337 foreach pgsz {512 1024 2048 4096} { 338 forcedelete test.db test.db-wal 339 do_test wal-6.$sector.$pgsz.1 { 340 sqlite3 db test.db -vfs devsym 341 execsql " 342 PRAGMA page_size = $pgsz; 343 PRAGMA auto_vacuum = 0; 344 PRAGMA journal_mode = wal; 345 " 346 execsql " 347 CREATE TABLE t1(a, b); 348 INSERT INTO t1 VALUES(1, 2); 349 " 350 db close 351 file size test.db 352 } [expr $pgsz*2] 353 354 do_test wal-6.$sector.$pgsz.2 { 355 log_deleted test.db-wal 356 } {1} 357 } 358 } 359 360 do_test wal-7.1 { 361 forcedelete test.db test.db-wal 362 sqlite3_wal db test.db 363 execsql { 364 PRAGMA page_size = 1024; 365 CREATE TABLE t1(a, b); 366 INSERT INTO t1 VALUES(1, 2); 367 } 368 list [file size test.db] [file size test.db-wal] 369 } [list 1024 [wal_file_size 3 1024]] 370 do_test wal-7.2 { 371 execsql { PRAGMA wal_checkpoint } 372 list [file size test.db] [file size test.db-wal] 373 } [list 2048 [wal_file_size 3 1024]] 374 375 # Execute some transactions in auto-vacuum mode to test database file 376 # truncation. 377 # 378 do_test wal-8.1 { 379 reopen_db 380 catch { db close } 381 forcedelete test.db test.db-wal 382 383 sqlite3 db test.db 384 db function blob blob 385 execsql { 386 PRAGMA auto_vacuum = 1; 387 PRAGMA journal_mode = wal; 388 PRAGMA auto_vacuum; 389 } 390 } {wal 1} 391 do_test wal-8.2 { 392 execsql { 393 PRAGMA page_size = 1024; 394 CREATE TABLE t1(x); 395 INSERT INTO t1 VALUES(blob(900)); 396 INSERT INTO t1 VALUES(blob(900)); 397 INSERT INTO t1 SELECT blob(900) FROM t1; /* 4 */ 398 INSERT INTO t1 SELECT blob(900) FROM t1; /* 8 */ 399 INSERT INTO t1 SELECT blob(900) FROM t1; /* 16 */ 400 INSERT INTO t1 SELECT blob(900) FROM t1; /* 32 */ 401 INSERT INTO t1 SELECT blob(900) FROM t1; /* 64 */ 402 PRAGMA wal_checkpoint; 403 } 404 file size test.db 405 } [expr 68*1024] 406 do_test wal-8.3 { 407 execsql { 408 DELETE FROM t1 WHERE rowid<54; 409 PRAGMA wal_checkpoint; 410 } 411 file size test.db 412 } [expr 14*1024] 413 414 # Run some "warm-body" tests to ensure that log-summary files with more 415 # than 256 entries (log summaries that contain index blocks) work Ok. 416 # 417 do_test wal-9.1 { 418 reopen_db 419 execsql { 420 PRAGMA cache_size=2000; 421 CREATE TABLE t1(x PRIMARY KEY); 422 INSERT INTO t1 VALUES(blob(900)); 423 INSERT INTO t1 VALUES(blob(900)); 424 INSERT INTO t1 SELECT blob(900) FROM t1; /* 4 */ 425 INSERT INTO t1 SELECT blob(900) FROM t1; /* 8 */ 426 INSERT INTO t1 SELECT blob(900) FROM t1; /* 16 */ 427 INSERT INTO t1 SELECT blob(900) FROM t1; /* 32 */ 428 INSERT INTO t1 SELECT blob(900) FROM t1; /* 64 */ 429 INSERT INTO t1 SELECT blob(900) FROM t1; /* 128 */ 430 INSERT INTO t1 SELECT blob(900) FROM t1; /* 256 */ 431 } 432 file size test.db 433 } 1024 434 do_test wal-9.2 { 435 sqlite3_wal db2 test.db 436 execsql {PRAGMA integrity_check } db2 437 } {ok} 438 439 do_test wal-9.3 { 440 forcedelete test2.db test2.db-wal 441 copy_file test.db test2.db 442 copy_file test.db-wal test2.db-wal 443 sqlite3_wal db3 test2.db 444 execsql {PRAGMA integrity_check } db3 445 } {ok} 446 db3 close 447 448 do_test wal-9.4 { 449 execsql { PRAGMA wal_checkpoint } 450 db2 close 451 sqlite3_wal db2 test.db 452 execsql {PRAGMA integrity_check } db2 453 } {ok} 454 455 foreach handle {db db2 db3} { catch { $handle close } } 456 unset handle 457 458 #------------------------------------------------------------------------- 459 # The following block of tests - wal-10.* - test that the WAL locking 460 # scheme works in simple cases. This block of tests is run twice. Once 461 # using multiple connections in the address space of the current process, 462 # and once with all connections except one running in external processes. 463 # 464 do_multiclient_test tn { 465 466 # Initialize the database schema and contents. 467 # 468 do_test wal-10.$tn.1 { 469 execsql { 470 PRAGMA auto_vacuum = 0; 471 PRAGMA journal_mode = wal; 472 CREATE TABLE t1(a, b); 473 INSERT INTO t1 VALUES(1, 2); 474 SELECT * FROM t1; 475 } 476 } {wal 1 2} 477 478 # Open a transaction and write to the database using [db]. Check that [db2] 479 # is still able to read the snapshot before the transaction was opened. 480 # 481 do_test wal-10.$tn.2 { 482 execsql { BEGIN; INSERT INTO t1 VALUES(3, 4); } 483 sql2 {SELECT * FROM t1} 484 } {1 2} 485 486 # Have [db] commit the transaction. Check that [db2] is now seeing the 487 # new, updated snapshot. 488 # 489 do_test wal-10.$tn.3 { 490 execsql { COMMIT } 491 sql2 {SELECT * FROM t1} 492 } {1 2 3 4} 493 494 # Have [db2] open a read transaction. Then write to the db via [db]. Check 495 # that [db2] is still seeing the original snapshot. Then read with [db3]. 496 # [db3] should see the newly committed data. 497 # 498 do_test wal-10.$tn.4 { 499 sql2 { BEGIN ; SELECT * FROM t1} 500 } {1 2 3 4} 501 do_test wal-10.$tn.5 { 502 execsql { INSERT INTO t1 VALUES(5, 6); } 503 sql2 {SELECT * FROM t1} 504 } {1 2 3 4} 505 do_test wal-10.$tn.6 { 506 sql3 {SELECT * FROM t1} 507 } {1 2 3 4 5 6} 508 do_test wal-10.$tn.7 { 509 sql2 COMMIT 510 } {} 511 512 # Have [db2] open a write transaction. Then attempt to write to the 513 # database via [db]. This should fail (writer lock cannot be obtained). 514 # 515 # Then open a read-transaction with [db]. Commit the [db2] transaction 516 # to disk. Verify that [db] still cannot write to the database (because 517 # it is reading an old snapshot). 518 # 519 # Close the current [db] transaction. Open a new one. [db] can now write 520 # to the database (as it is not locked and [db] is reading the latest 521 # snapshot). 522 # 523 do_test wal-10.$tn.7 { 524 sql2 { BEGIN; INSERT INTO t1 VALUES(7, 8) ; } 525 catchsql { INSERT INTO t1 VALUES(9, 10) } 526 } {1 {database is locked}} 527 do_test wal-10.$tn.8 { 528 execsql { BEGIN ; SELECT * FROM t1 } 529 } {1 2 3 4 5 6} 530 do_test wal-10.$tn.9 { 531 sql2 COMMIT 532 catchsql { INSERT INTO t1 VALUES(9, 10) } 533 } {1 {database is locked}} 534 do_test wal-10.$tn.10 { 535 execsql { COMMIT } 536 execsql { BEGIN } 537 execsql { INSERT INTO t1 VALUES(9, 10) } 538 execsql { COMMIT } 539 execsql { SELECT * FROM t1 } 540 } {1 2 3 4 5 6 7 8 9 10} 541 542 # Open a read transaction with [db2]. Check that this prevents [db] from 543 # checkpointing the database. But not from writing to it. 544 # 545 do_test wal-10.$tn.11 { 546 sql2 { BEGIN; SELECT * FROM t1 } 547 } {1 2 3 4 5 6 7 8 9 10} 548 do_test wal-10.$tn.12 { 549 catchsql { PRAGMA wal_checkpoint } 550 } {0 {0 7 7}} ;# Reader no longer block checkpoints 551 do_test wal-10.$tn.13 { 552 execsql { INSERT INTO t1 VALUES(11, 12) } 553 sql2 {SELECT * FROM t1} 554 } {1 2 3 4 5 6 7 8 9 10} 555 556 # Writers do not block checkpoints any more either. 557 # 558 do_test wal-10.$tn.14 { 559 catchsql { PRAGMA wal_checkpoint } 560 } {0 {0 8 7}} 561 562 # The following series of test cases used to verify another blocking 563 # case in WAL - a case which no longer blocks. 564 # 565 do_test wal-10.$tn.15 { 566 sql2 { COMMIT; BEGIN; SELECT * FROM t1; } 567 } {1 2 3 4 5 6 7 8 9 10 11 12} 568 do_test wal-10.$tn.16 { 569 catchsql { PRAGMA wal_checkpoint } 570 } {0 {0 8 8}} 571 do_test wal-10.$tn.17 { 572 execsql { PRAGMA wal_checkpoint } 573 } {0 8 8} 574 do_test wal-10.$tn.18 { 575 sql3 { BEGIN; SELECT * FROM t1 } 576 } {1 2 3 4 5 6 7 8 9 10 11 12} 577 do_test wal-10.$tn.19 { 578 catchsql { INSERT INTO t1 VALUES(13, 14) } 579 } {0 {}} 580 do_test wal-10.$tn.20 { 581 execsql { SELECT * FROM t1 } 582 } {1 2 3 4 5 6 7 8 9 10 11 12 13 14} 583 do_test wal-10.$tn.21 { 584 sql3 COMMIT 585 sql2 COMMIT 586 } {} 587 do_test wal-10.$tn.22 { 588 execsql { SELECT * FROM t1 } 589 } {1 2 3 4 5 6 7 8 9 10 11 12 13 14} 590 591 # Another series of tests that used to demonstrate blocking behavior 592 # but which now work. 593 # 594 do_test wal-10.$tn.23 { 595 execsql { PRAGMA wal_checkpoint } 596 } {0 9 9} 597 do_test wal-10.$tn.24 { 598 sql2 { BEGIN; SELECT * FROM t1; } 599 } {1 2 3 4 5 6 7 8 9 10 11 12 13 14} 600 do_test wal-10.$tn.25 { 601 execsql { PRAGMA wal_checkpoint } 602 } {0 9 9} 603 do_test wal-10.$tn.26 { 604 catchsql { INSERT INTO t1 VALUES(15, 16) } 605 } {0 {}} 606 do_test wal-10.$tn.27 { 607 sql3 { INSERT INTO t1 VALUES(17, 18) } 608 } {} 609 do_test wal-10.$tn.28 { 610 code3 { 611 set ::STMT [sqlite3_prepare db3 "SELECT * FROM t1" -1 TAIL] 612 sqlite3_step $::STMT 613 } 614 execsql { SELECT * FROM t1 } 615 } {1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18} 616 do_test wal-10.$tn.29 { 617 execsql { INSERT INTO t1 VALUES(19, 20) } 618 catchsql { PRAGMA wal_checkpoint } 619 } {0 {0 3 0}} 620 do_test wal-10.$tn.30 { 621 code3 { sqlite3_finalize $::STMT } 622 execsql { PRAGMA wal_checkpoint } 623 } {0 3 0} 624 625 # At one point, if a reader failed to upgrade to a writer because it 626 # was reading an old snapshot, the write-locks were not being released. 627 # Test that this bug has been fixed. 628 # 629 do_test wal-10.$tn.31 { 630 sql2 COMMIT 631 execsql { BEGIN ; SELECT * FROM t1 } 632 sql2 { INSERT INTO t1 VALUES(21, 22) } 633 catchsql { INSERT INTO t1 VALUES(23, 24) } 634 } {1 {database is locked}} 635 do_test wal-10.$tn.32 { 636 # This statement would fail when the bug was present. 637 sql2 { INSERT INTO t1 VALUES(23, 24) } 638 } {} 639 do_test wal-10.$tn.33 { 640 execsql { SELECT * FROM t1 ; COMMIT } 641 } {1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20} 642 do_test wal-10.$tn.34 { 643 execsql { SELECT * FROM t1 } 644 } {1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24} 645 646 # Test that if a checkpointer cannot obtain the required locks, it 647 # releases all locks before returning a busy error. 648 # 649 do_test wal-10.$tn.35 { 650 execsql { 651 DELETE FROM t1; 652 INSERT INTO t1 VALUES('a', 'b'); 653 INSERT INTO t1 VALUES('c', 'd'); 654 } 655 sql2 { 656 BEGIN; 657 SELECT * FROM t1; 658 } 659 } {a b c d} 660 do_test wal-10.$tn.36 { 661 catchsql { PRAGMA wal_checkpoint } 662 } {0 {0 8 8}} 663 do_test wal-10.$tn.36 { 664 sql3 { INSERT INTO t1 VALUES('e', 'f') } 665 sql2 { SELECT * FROM t1 } 666 } {a b c d} 667 do_test wal-10.$tn.37 { 668 sql2 COMMIT 669 execsql { PRAGMA wal_checkpoint } 670 } {0 9 9} 671 } 672 673 #------------------------------------------------------------------------- 674 # This block of tests, wal-11.*, test that nothing goes terribly wrong 675 # if frames must be written to the log file before a transaction is 676 # committed (in order to free up memory). 677 # 678 do_test wal-11.1 { 679 reopen_db 680 execsql { 681 PRAGMA cache_size = 10; 682 PRAGMA page_size = 1024; 683 CREATE TABLE t1(x PRIMARY KEY); 684 } 685 list [expr [file size test.db]/1024] [expr [file size test.db-wal]/1044] 686 } {1 3} 687 do_test wal-11.2 { 688 execsql { PRAGMA wal_checkpoint } 689 list [expr [file size test.db]/1024] [file size test.db-wal] 690 } [list 3 [wal_file_size 3 1024]] 691 do_test wal-11.3 { 692 execsql { INSERT INTO t1 VALUES( blob(900) ) } 693 list [expr [file size test.db]/1024] [file size test.db-wal] 694 } [list 3 [wal_file_size 4 1024]] 695 696 do_test wal-11.4 { 697 execsql { 698 BEGIN; 699 INSERT INTO t1 SELECT blob(900) FROM t1; -- 2 700 INSERT INTO t1 SELECT blob(900) FROM t1; -- 4 701 INSERT INTO t1 SELECT blob(900) FROM t1; -- 8 702 INSERT INTO t1 SELECT blob(900) FROM t1; -- 16 703 } 704 list [expr [file size test.db]/1024] [file size test.db-wal] 705 } [list 3 [wal_file_size 32 1024]] 706 do_test wal-11.5 { 707 execsql { 708 SELECT count(*) FROM t1; 709 PRAGMA integrity_check; 710 } 711 } {16 ok} 712 do_test wal-11.6 { 713 execsql COMMIT 714 list [expr [file size test.db]/1024] [file size test.db-wal] 715 } [list 3 [wal_file_size 40 1024]] 716 do_test wal-11.7 { 717 execsql { 718 SELECT count(*) FROM t1; 719 PRAGMA integrity_check; 720 } 721 } {16 ok} 722 do_test wal-11.8 { 723 execsql { PRAGMA wal_checkpoint } 724 list [expr [file size test.db]/1024] [file size test.db-wal] 725 } [list 37 [wal_file_size 40 1024]] 726 do_test wal-11.9 { 727 db close 728 list [expr [file size test.db]/1024] [log_deleted test.db-wal] 729 } {37 1} 730 sqlite3_wal db test.db 731 732 # After adding the capability of WAL to overwrite prior uncommitted 733 # frame in the WAL-file with revised content, the size of the WAL file 734 # following cache-spill is smaller. 735 # 736 #set nWal 39 737 #if {[permutation]!="mmap"} {set nWal 37} 738 #ifcapable !mmap {set nWal 37} 739 set nWal 34 740 741 do_test wal-11.10 { 742 execsql { 743 PRAGMA cache_size = 10; 744 BEGIN; 745 INSERT INTO t1 SELECT blob(900) FROM t1; -- 32 746 SELECT count(*) FROM t1; 747 } 748 list [expr [file size test.db]/1024] [file size test.db-wal] 749 } [list 37 [wal_file_size $nWal 1024]] 750 do_test wal-11.11 { 751 execsql { 752 SELECT count(*) FROM t1; 753 ROLLBACK; 754 SELECT count(*) FROM t1; 755 } 756 } {32 16} 757 do_test wal-11.12 { 758 list [expr [file size test.db]/1024] [file size test.db-wal] 759 } [list 37 [wal_file_size $nWal 1024]] 760 do_test wal-11.13 { 761 execsql { 762 INSERT INTO t1 VALUES( blob(900) ); 763 SELECT count(*) FROM t1; 764 PRAGMA integrity_check; 765 } 766 } {17 ok} 767 do_test wal-11.14 { 768 list [expr [file size test.db]/1024] [file size test.db-wal] 769 } [list 37 [wal_file_size $nWal 1024]] 770 771 772 #------------------------------------------------------------------------- 773 # This block of tests, wal-12.*, tests the fix for a problem that 774 # could occur if a log that is a prefix of an older log is written 775 # into a reused log file. 776 # 777 reopen_db 778 do_test wal-12.1 { 779 execsql { 780 PRAGMA page_size = 1024; 781 CREATE TABLE t1(x, y); 782 CREATE TABLE t2(x, y); 783 INSERT INTO t1 VALUES('A', 1); 784 } 785 list [expr [file size test.db]/1024] [file size test.db-wal] 786 } [list 1 [wal_file_size 5 1024]] 787 do_test wal-12.2 { 788 db close 789 sqlite3 db test.db 790 execsql { 791 PRAGMA synchronous = normal; 792 UPDATE t1 SET y = 0 WHERE x = 'A'; 793 } 794 list [expr [file size test.db]/1024] [expr [file size test.db-wal]/1044] 795 } {3 1} 796 do_test wal-12.3 { 797 execsql { INSERT INTO t2 VALUES('B', 1) } 798 list [expr [file size test.db]/1024] [expr [file size test.db-wal]/1044] 799 } {3 2} 800 do_test wal-12.4 { 801 forcecopy test.db test2.db 802 forcecopy test.db-wal test2.db-wal 803 sqlite3_wal db2 test2.db 804 execsql { SELECT * FROM t2 } db2 805 } {B 1} 806 db2 close 807 do_test wal-12.5 { 808 execsql { 809 PRAGMA wal_checkpoint; 810 UPDATE t2 SET y = 2 WHERE x = 'B'; 811 PRAGMA wal_checkpoint; 812 UPDATE t1 SET y = 1 WHERE x = 'A'; 813 PRAGMA wal_checkpoint; 814 UPDATE t1 SET y = 0 WHERE x = 'A'; 815 } 816 execsql { SELECT * FROM t2 } 817 } {B 2} 818 do_test wal-12.6 { 819 forcecopy test.db test2.db 820 forcecopy test.db-wal test2.db-wal 821 sqlite3_wal db2 test2.db 822 execsql { SELECT * FROM t2 } db2 823 } {B 2} 824 db2 close 825 db close 826 827 #------------------------------------------------------------------------- 828 # Check a fun corruption case has been fixed. 829 # 830 # The problem was that after performing a checkpoint using a connection 831 # that had an out-of-date pager-cache, the next time the connection was 832 # used it did not realize the cache was out-of-date and proceeded to 833 # operate with an inconsistent cache. Leading to corruption. 834 # 835 catch { db close } 836 catch { db2 close } 837 catch { db3 close } 838 forcedelete test.db test.db-wal 839 sqlite3 db test.db 840 sqlite3 db2 test.db 841 do_test wal-14 { 842 execsql { 843 PRAGMA journal_mode = WAL; 844 CREATE TABLE t1(a PRIMARY KEY, b); 845 INSERT INTO t1 VALUES(randomblob(10), randomblob(100)); 846 INSERT INTO t1 SELECT randomblob(10), randomblob(100) FROM t1; 847 INSERT INTO t1 SELECT randomblob(10), randomblob(100) FROM t1; 848 INSERT INTO t1 SELECT randomblob(10), randomblob(100) FROM t1; 849 } 850 851 db2 eval { 852 INSERT INTO t1 SELECT randomblob(10), randomblob(100); 853 INSERT INTO t1 SELECT randomblob(10), randomblob(100); 854 INSERT INTO t1 SELECT randomblob(10), randomblob(100); 855 INSERT INTO t1 SELECT randomblob(10), randomblob(100); 856 } 857 858 # After executing the "PRAGMA wal_checkpoint", connection [db] was being 859 # left with an inconsistent cache. Running the CREATE INDEX statement 860 # in this state led to database corruption. 861 catchsql { 862 PRAGMA wal_checkpoint; 863 CREATE INDEX i1 on t1(b); 864 } 865 866 db2 eval { PRAGMA integrity_check } 867 } {ok} 868 869 catch { db close } 870 catch { db2 close } 871 872 #------------------------------------------------------------------------- 873 # The following block of tests - wal-15.* - focus on testing the 874 # implementation of the sqlite3_wal_checkpoint() interface. 875 # 876 forcedelete test.db test.db-wal 877 sqlite3 db test.db 878 do_test wal-15.1 { 879 execsql { 880 PRAGMA auto_vacuum = 0; 881 PRAGMA page_size = 1024; 882 PRAGMA journal_mode = WAL; 883 } 884 execsql { 885 CREATE TABLE t1(a, b); 886 INSERT INTO t1 VALUES(1, 2); 887 } 888 } {} 889 890 # Test that an error is returned if the database name is not recognized 891 # 892 do_test wal-15.2.1 { 893 sqlite3_wal_checkpoint db aux 894 } {SQLITE_ERROR} 895 do_test wal-15.2.2 { 896 sqlite3_errcode db 897 } {SQLITE_ERROR} 898 do_test wal-15.2.3 { 899 sqlite3_errmsg db 900 } {unknown database: aux} 901 902 # Test that an error is returned if an attempt is made to checkpoint 903 # if a transaction is open on the database. 904 # 905 do_test wal-15.3.1 { 906 execsql { 907 BEGIN; 908 INSERT INTO t1 VALUES(3, 4); 909 } 910 sqlite3_wal_checkpoint db main 911 } {SQLITE_LOCKED} 912 do_test wal-15.3.2 { 913 sqlite3_errcode db 914 } {SQLITE_LOCKED} 915 do_test wal-15.3.3 { 916 sqlite3_errmsg db 917 } {database table is locked} 918 919 # Earlier versions returned an error is returned if the db cannot be 920 # checkpointed because of locks held by another connection. Check that 921 # this is no longer the case. 922 # 923 sqlite3 db2 test.db 924 do_test wal-15.4.1 { 925 execsql { 926 BEGIN; 927 SELECT * FROM t1; 928 } db2 929 } {1 2} 930 do_test wal-15.4.2 { 931 execsql { COMMIT } 932 sqlite3_wal_checkpoint db 933 } {SQLITE_OK} 934 do_test wal-15.4.3 { 935 sqlite3_errmsg db 936 } {not an error} 937 938 # After [db2] drops its lock, [db] may checkpoint the db. 939 # 940 do_test wal-15.4.4 { 941 execsql { COMMIT } db2 942 sqlite3_wal_checkpoint db 943 } {SQLITE_OK} 944 do_test wal-15.4.5 { 945 sqlite3_errmsg db 946 } {not an error} 947 do_test wal-15.4.6 { 948 file size test.db 949 } [expr 1024*2] 950 951 catch { db2 close } 952 catch { db close } 953 954 #------------------------------------------------------------------------- 955 # The following block of tests - wal-16.* - test that if a NULL pointer or 956 # an empty string is passed as the second argument of the wal_checkpoint() 957 # API, an attempt is made to checkpoint all attached databases. 958 # 959 foreach {tn ckpt_cmd ckpt_res ckpt_main ckpt_aux} { 960 1 {sqlite3_wal_checkpoint db} SQLITE_OK 1 1 961 2 {sqlite3_wal_checkpoint db ""} SQLITE_OK 1 1 962 3 {db eval "PRAGMA wal_checkpoint"} {0 10 10} 1 1 963 964 4 {sqlite3_wal_checkpoint db main} SQLITE_OK 1 0 965 5 {sqlite3_wal_checkpoint db aux} SQLITE_OK 0 1 966 6 {sqlite3_wal_checkpoint db temp} SQLITE_OK 0 0 967 7 {db eval "PRAGMA main.wal_checkpoint"} {0 10 10} 1 0 968 8 {db eval "PRAGMA aux.wal_checkpoint"} {0 13 13} 0 1 969 9 {db eval "PRAGMA temp.wal_checkpoint"} {0 -1 -1} 0 0 970 } { 971 do_test wal-16.$tn.1 { 972 forcedelete test2.db test2.db-wal test2.db-journal 973 forcedelete test.db test.db-wal test.db-journal 974 975 sqlite3 db test.db 976 execsql { 977 ATTACH 'test2.db' AS aux; 978 PRAGMA main.auto_vacuum = 0; 979 PRAGMA aux.auto_vacuum = 0; 980 PRAGMA main.journal_mode = WAL; 981 PRAGMA aux.journal_mode = WAL; 982 PRAGMA main.synchronous = NORMAL; 983 PRAGMA aux.synchronous = NORMAL; 984 } 985 } {wal wal} 986 987 do_test wal-16.$tn.2 { 988 execsql { 989 CREATE TABLE main.t1(a, b, PRIMARY KEY(a, b)); 990 CREATE TABLE aux.t2(a, b, PRIMARY KEY(a, b)); 991 992 INSERT INTO t2 VALUES(1, randomblob(1000)); 993 INSERT INTO t2 VALUES(2, randomblob(1000)); 994 INSERT INTO t1 SELECT * FROM t2; 995 } 996 997 list [file size test.db] [file size test.db-wal] 998 } [list [expr 1*1024] [wal_file_size 10 1024]] 999 do_test wal-16.$tn.3 { 1000 list [file size test2.db] [file size test2.db-wal] 1001 } [list [expr 1*1024] [wal_file_size 13 1024]] 1002 1003 do_test wal-16.$tn.4 [list eval $ckpt_cmd] $ckpt_res 1004 1005 do_test wal-16.$tn.5 { 1006 list [file size test.db] [file size test.db-wal] 1007 } [list [expr ($ckpt_main ? 7 : 1)*1024] [wal_file_size 10 1024]] 1008 1009 do_test wal-16.$tn.6 { 1010 list [file size test2.db] [file size test2.db-wal] 1011 } [list [expr ($ckpt_aux ? 7 : 1)*1024] [wal_file_size 13 1024]] 1012 1013 catch { db close } 1014 } 1015 1016 #------------------------------------------------------------------------- 1017 # The following tests - wal-17.* - attempt to verify that the correct 1018 # number of "padding" frames are appended to the log file when a transaction 1019 # is committed in synchronous=FULL mode. 1020 # 1021 # Do this by creating a database that uses 512 byte pages. Then writing 1022 # a transaction that modifies 171 pages. In synchronous=NORMAL mode, this 1023 # produces a log file of: 1024 # 1025 # 32 + (24+512)*171 = 90312 bytes. 1026 # 1027 # Slightly larger than 11*8192 = 90112 bytes. 1028 # 1029 # Run the test using various different sector-sizes. In each case, the 1030 # WAL code should write the 90300 bytes of log file containing the 1031 # transaction, then append as may frames as are required to extend the 1032 # log file so that no part of the next transaction will be written into 1033 # a disk-sector used by transaction just committed. 1034 # 1035 set old_pending_byte [sqlite3_test_control_pending_byte 0x10000000] 1036 catch { db close } 1037 foreach {tn sectorsize logsize} " 1038 1 128 [wal_file_size 172 512] 1039 2 256 [wal_file_size 172 512] 1040 3 512 [wal_file_size 172 512] 1041 4 1024 [wal_file_size 172 512] 1042 5 2048 [wal_file_size 172 512] 1043 6 4096 [wal_file_size 176 512] 1044 7 8192 [wal_file_size 184 512] 1045 " { 1046 forcedelete test.db test.db-wal test.db-journal 1047 sqlite3_simulate_device -sectorsize $sectorsize 1048 sqlite3 db test.db -vfs devsym 1049 1050 do_test wal-17.$tn.1 { 1051 execsql { 1052 PRAGMA auto_vacuum = 0; 1053 PRAGMA page_size = 512; 1054 PRAGMA cache_size = -2000; 1055 PRAGMA journal_mode = WAL; 1056 PRAGMA synchronous = FULL; 1057 } 1058 execsql { 1059 BEGIN; 1060 CREATE TABLE t(x); 1061 } 1062 for {set i 0} {$i<166} {incr i} { 1063 execsql { INSERT INTO t VALUES(randomblob(400)) } 1064 } 1065 execsql COMMIT 1066 1067 file size test.db-wal 1068 } $logsize 1069 1070 do_test wal-17.$tn.2 { 1071 file size test.db 1072 } 512 1073 1074 do_test wal-17.$tn.3 { 1075 db close 1076 file size test.db 1077 } [expr 512*171] 1078 } 1079 sqlite3_test_control_pending_byte $old_pending_byte 1080 1081 #------------------------------------------------------------------------- 1082 # This test - wal-18.* - verifies a couple of specific conditions that 1083 # may be encountered while recovering a log file are handled correctly: 1084 # 1085 # wal-18.1.* When the first 32-bits of a frame checksum is correct but 1086 # the second 32-bits are false, and 1087 # 1088 # wal-18.2.* When the page-size field that occurs at the start of a log 1089 # file is a power of 2 greater than 16384 or smaller than 512. 1090 # 1091 forcedelete test.db test.db-wal test.db-journal 1092 do_test wal-18.0 { 1093 sqlite3 db test.db 1094 execsql { 1095 PRAGMA page_size = 1024; 1096 PRAGMA auto_vacuum = 0; 1097 PRAGMA journal_mode = WAL; 1098 PRAGMA synchronous = OFF; 1099 1100 CREATE TABLE t1(a, b, UNIQUE(a, b)); 1101 INSERT INTO t1 VALUES(0, 0); 1102 PRAGMA wal_checkpoint; 1103 1104 INSERT INTO t1 VALUES(1, 2); -- frames 1 and 2 1105 INSERT INTO t1 VALUES(3, 4); -- frames 3 and 4 1106 INSERT INTO t1 VALUES(5, 6); -- frames 5 and 6 1107 } 1108 1109 forcecopy test.db testX.db 1110 forcecopy test.db-wal testX.db-wal 1111 db close 1112 list [file size testX.db] [file size testX.db-wal] 1113 } [list [expr 3*1024] [wal_file_size 6 1024]] 1114 1115 unset -nocomplain nFrame result 1116 foreach {nFrame result} { 1117 0 {0 0} 1118 1 {0 0} 1119 2 {0 0 1 2} 1120 3 {0 0 1 2} 1121 4 {0 0 1 2 3 4} 1122 5 {0 0 1 2 3 4} 1123 6 {0 0 1 2 3 4 5 6} 1124 } { 1125 do_test wal-18.1.$nFrame { 1126 forcecopy testX.db test.db 1127 forcecopy testX.db-wal test.db-wal 1128 1129 hexio_write test.db-wal [expr 24 + $nFrame*(24+1024) + 20] 00000000 1130 1131 sqlite3 db test.db 1132 execsql { 1133 SELECT * FROM t1; 1134 PRAGMA integrity_check; 1135 } 1136 } [concat $result ok] 1137 db close 1138 } 1139 1140 proc randomblob {pgsz} { 1141 sqlite3 rbdb :memory: 1142 set blob [rbdb one {SELECT randomblob($pgsz)}] 1143 rbdb close 1144 set blob 1145 } 1146 1147 proc logcksum {ckv1 ckv2 blob} { 1148 upvar $ckv1 c1 1149 upvar $ckv2 c2 1150 1151 # Since the magic number at the start of the -wal file header is 1152 # 931071618 that indicates that the content should always be read as 1153 # little-endian. 1154 # 1155 set scanpattern i* 1156 1157 binary scan $blob $scanpattern values 1158 foreach {v1 v2} $values { 1159 set c1 [expr {($c1 + $v1 + $c2)&0xFFFFFFFF}] 1160 set c2 [expr {($c2 + $v2 + $c1)&0xFFFFFFFF}] 1161 } 1162 } 1163 1164 forcecopy test.db testX.db 1165 foreach {tn pgsz works} { 1166 1 128 0 1167 2 256 0 1168 3 512 1 1169 4 1024 1 1170 5 2048 1 1171 6 4096 1 1172 7 8192 1 1173 8 16384 1 1174 9 32768 1 1175 10 65536 1 1176 11 131072 0 1177 11 1016 0 1178 } { 1179 1180 if {$::SQLITE_MAX_PAGE_SIZE < $pgsz} { 1181 set works 0 1182 } 1183 1184 for {set pg 1} {$pg <= 3} {incr pg} { 1185 forcecopy testX.db test.db 1186 forcedelete test.db-wal 1187 1188 # Check that the database now exists and consists of three pages. And 1189 # that there is no associated wal file. 1190 # 1191 do_test wal-18.2.$tn.$pg.1 { file exists test.db-wal } 0 1192 do_test wal-18.2.$tn.$pg.2 { file exists test.db } 1 1193 do_test wal-18.2.$tn.$pg.3 { file size test.db } [expr 1024*3] 1194 1195 do_test wal-18.2.$tn.$pg.4 { 1196 1197 # Create a wal file that contains a single frame (database page 1198 # number $pg) with the commit flag set. The frame checksum is 1199 # correct, but the contents of the database page are corrupt. 1200 # 1201 # The page-size in the log file header is set to $pgsz. If the 1202 # WAL code considers $pgsz to be a valid SQLite database file page-size, 1203 # the database will be corrupt (because the garbage frame contents 1204 # will be treated as valid content). If $pgsz is invalid (too small 1205 # or too large), the db will not be corrupt as the log file will 1206 # be ignored. 1207 # 1208 set walhdr [binary format IIIIII 931071618 3007000 $pgsz 1234 22 23] 1209 set framebody [randomblob $pgsz] 1210 set framehdr [binary format IIII $pg 5 22 23] 1211 set c1 0 1212 set c2 0 1213 logcksum c1 c2 $walhdr 1214 1215 append walhdr [binary format II $c1 $c2] 1216 logcksum c1 c2 [string range $framehdr 0 7] 1217 logcksum c1 c2 $framebody 1218 set framehdr [binary format IIIIII $pg 5 22 23 $c1 $c2] 1219 1220 set fd [open test.db-wal w] 1221 fconfigure $fd -encoding binary -translation binary 1222 puts -nonewline $fd $walhdr 1223 puts -nonewline $fd $framehdr 1224 puts -nonewline $fd $framebody 1225 close $fd 1226 1227 file size test.db-wal 1228 } [wal_file_size 1 $pgsz] 1229 1230 do_test wal-18.2.$tn.$pg.5 { 1231 sqlite3 db test.db 1232 set rc [catch { db one {PRAGMA integrity_check} } msg] 1233 expr { $rc!=0 || $msg!="ok" } 1234 } $works 1235 1236 db close 1237 } 1238 } 1239 1240 #------------------------------------------------------------------------- 1241 # The following test - wal-19.* - fixes a bug that was present during 1242 # development. 1243 # 1244 # When a database connection in WAL mode is closed, it attempts an 1245 # EXCLUSIVE lock on the database file. If the lock is obtained, the 1246 # connection knows that it is the last connection to disconnect from 1247 # the database, so it runs a checkpoint operation. The bug was that 1248 # the connection was not updating its private copy of the wal-index 1249 # header before doing so, meaning that it could checkpoint an old 1250 # snapshot. 1251 # 1252 do_test wal-19.1 { 1253 forcedelete test.db test.db-wal test.db-journal 1254 sqlite3 db test.db 1255 sqlite3 db2 test.db 1256 execsql { 1257 PRAGMA journal_mode = WAL; 1258 CREATE TABLE t1(a, b); 1259 INSERT INTO t1 VALUES(1, 2); 1260 INSERT INTO t1 VALUES(3, 4); 1261 } 1262 execsql { SELECT * FROM t1 } db2 1263 } {1 2 3 4} 1264 do_test wal-19.2 { 1265 execsql { 1266 INSERT INTO t1 VALUES(5, 6); 1267 SELECT * FROM t1; 1268 } 1269 } {1 2 3 4 5 6} 1270 do_test wal-19.3 { 1271 db close 1272 db2 close 1273 file exists test.db-wal 1274 } {0} 1275 do_test wal-19.4 { 1276 # When the bug was present, the following was returning {1 2 3 4} only, 1277 # as [db2] had an out-of-date copy of the wal-index header when it was 1278 # closed. 1279 # 1280 sqlite3 db test.db 1281 execsql { SELECT * FROM t1 } 1282 } {1 2 3 4 5 6} 1283 1284 #------------------------------------------------------------------------- 1285 # This test - wal-20.* - uses two connections. One in this process and 1286 # the other in an external process. The procedure is: 1287 # 1288 # 1. Using connection 1, create the database schema. 1289 # 1290 # 2. Using connection 2 (in an external process), add so much 1291 # data to the database without checkpointing that a wal-index 1292 # larger than 64KB is required. 1293 # 1294 # 3. Using connection 1, checkpoint the database. Make sure all 1295 # the data is present and the database is not corrupt. 1296 # 1297 # At one point, SQLite was failing to grow the mapping of the wal-index 1298 # file in step 3 and the checkpoint was corrupting the database file. 1299 # 1300 do_test wal-20.1 { 1301 catch {db close} 1302 forcedelete test.db test.db-wal test.db-journal 1303 sqlite3 db test.db 1304 execsql { 1305 PRAGMA journal_mode = WAL; 1306 CREATE TABLE t1(x); 1307 INSERT INTO t1 VALUES(randomblob(900)); 1308 SELECT count(*) FROM t1; 1309 } 1310 } {wal 1} 1311 do_test wal-20.2 { 1312 set ::buddy [launch_testfixture] 1313 testfixture $::buddy { 1314 sqlite3 db test.db 1315 db transaction { db eval { 1316 PRAGMA wal_autocheckpoint = 0; 1317 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 2 */ 1318 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 4 */ 1319 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 8 */ 1320 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 16 */ 1321 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 32 */ 1322 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 64 */ 1323 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 128 */ 1324 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 256 */ 1325 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 512 */ 1326 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 1024 */ 1327 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 2048 */ 1328 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 4096 */ 1329 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 8192 */ 1330 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 16384 */ 1331 } } 1332 } 1333 } {0} 1334 do_test wal-20.3 { 1335 close $::buddy 1336 execsql { PRAGMA wal_checkpoint } 1337 execsql { SELECT count(*) FROM t1 } 1338 } {16384} 1339 do_test wal-20.4 { 1340 db close 1341 sqlite3 db test.db 1342 execsql { SELECT count(*) FROM t1 } 1343 } {16384} 1344 integrity_check wal-20.5 1345 1346 catch { db2 close } 1347 catch { db close } 1348 1349 do_test wal-21.1 { 1350 faultsim_delete_and_reopen 1351 execsql { 1352 PRAGMA journal_mode = WAL; 1353 CREATE TABLE t1(a, b); 1354 INSERT INTO t1 VALUES(1, 2); 1355 INSERT INTO t1 VALUES(3, 4); 1356 INSERT INTO t1 VALUES(5, 6); 1357 INSERT INTO t1 VALUES(7, 8); 1358 INSERT INTO t1 VALUES(9, 10); 1359 INSERT INTO t1 VALUES(11, 12); 1360 } 1361 } {wal} 1362 do_test wal-21.2 { 1363 execsql { 1364 PRAGMA cache_size = 10; 1365 PRAGMA wal_checkpoint; 1366 BEGIN; 1367 SAVEPOINT s; 1368 INSERT INTO t1 SELECT randomblob(900), randomblob(900) FROM t1; 1369 ROLLBACK TO s; 1370 COMMIT; 1371 } 1372 execsql { SELECT * FROM t1 } 1373 } {1 2 3 4 5 6 7 8 9 10 11 12} 1374 do_test wal-21.3 { 1375 execsql { PRAGMA integrity_check } 1376 } {ok} 1377 1378 #------------------------------------------------------------------------- 1379 # Test reading and writing of databases with different page-sizes. 1380 # 1381 incr ::do_not_use_codec 1382 foreach pgsz {512 1024 2048 4096 8192 16384 32768 65536} { 1383 do_multiclient_test tn [string map [list %PGSZ% $pgsz] { 1384 do_test wal-22.%PGSZ%.$tn.1 { 1385 sql1 { 1386 PRAGMA main.page_size = %PGSZ%; 1387 PRAGMA auto_vacuum = 0; 1388 PRAGMA journal_mode = WAL; 1389 CREATE TABLE t1(x UNIQUE); 1390 INSERT INTO t1 SELECT randomblob(800); 1391 INSERT INTO t1 SELECT randomblob(800); 1392 INSERT INTO t1 SELECT randomblob(800); 1393 } 1394 } {wal} 1395 do_test wal-22.%PGSZ%.$tn.2 { sql2 { PRAGMA integrity_check } } {ok} 1396 do_test wal-22.%PGSZ%.$tn.3 { 1397 sql1 {PRAGMA wal_checkpoint} 1398 expr {[file size test.db] % %PGSZ%} 1399 } {0} 1400 }] 1401 } 1402 incr ::do_not_use_codec -1 1403 1404 #------------------------------------------------------------------------- 1405 # Test that when 1 or more pages are recovered from a WAL file, 1406 # sqlite3_log() is invoked to report this to the user. 1407 # 1408 ifcapable curdir { 1409 set walfile [file nativename [file join [get_pwd] test.db-wal]] 1410 } else { 1411 set walfile test.db-wal 1412 } 1413 catch {db close} 1414 forcedelete test.db 1415 do_test wal-23.1 { 1416 faultsim_delete_and_reopen 1417 execsql { 1418 CREATE TABLE t1(a, b); 1419 PRAGMA journal_mode = WAL; 1420 INSERT INTO t1 VALUES(1, 2); 1421 INSERT INTO t1 VALUES(3, 4); 1422 } 1423 faultsim_save_and_close 1424 1425 sqlite3_shutdown 1426 test_sqlite3_log [list lappend ::log] 1427 set ::log [list] 1428 sqlite3 db test.db 1429 execsql { SELECT * FROM t1 } 1430 } {1 2 3 4} 1431 do_test wal-23.2 { set ::log } {} 1432 1433 do_test wal-23.3 { 1434 db close 1435 set ::log [list] 1436 faultsim_restore_and_reopen 1437 execsql { SELECT * FROM t1 } 1438 } {1 2 3 4} 1439 do_test wal-23.4 { 1440 set ::log 1441 } [list SQLITE_NOTICE_RECOVER_WAL \ 1442 "recovered 2 frames from WAL file $walfile"] 1443 1444 1445 ifcapable autovacuum { 1446 # This block tests that if the size of a database is reduced by a 1447 # transaction (because of an incremental or auto-vacuum), that no 1448 # data is written to the WAL file for the truncated pages as part 1449 # of the commit. e.g. if a transaction reduces the size of a database 1450 # to N pages, data for page N+1 should not be written to the WAL file 1451 # when committing the transaction. At one point such data was being 1452 # written. 1453 # 1454 catch {db close} 1455 forcedelete test.db 1456 sqlite3 db test.db 1457 do_execsql_test 24.1 { 1458 PRAGMA auto_vacuum = 2; 1459 PRAGMA journal_mode = WAL; 1460 PRAGMA page_size = 1024; 1461 CREATE TABLE t1(x); 1462 INSERT INTO t1 VALUES(randomblob(5000)); 1463 INSERT INTO t1 SELECT * FROM t1; 1464 INSERT INTO t1 SELECT * FROM t1; 1465 INSERT INTO t1 SELECT * FROM t1; 1466 INSERT INTO t1 SELECT * FROM t1; 1467 } {wal} 1468 do_test 24.2 { 1469 execsql { 1470 DELETE FROM t1; 1471 PRAGMA wal_checkpoint; 1472 } 1473 db close 1474 sqlite3 db test.db 1475 file exists test.db-wal 1476 } 0 1477 do_test 24.3 { 1478 file size test.db 1479 } [expr 84 * 1024] 1480 do_test 24.4 { 1481 execsql { 1482 PRAGMA cache_size = 200; 1483 PRAGMA incremental_vacuum; 1484 PRAGMA wal_checkpoint; 1485 } 1486 file size test.db 1487 } [expr 3 * 1024] 1488 1489 # WAL file now contains a single frame - the new root page for table t1. 1490 # It would be two frames (the new root page and a padding frame) if the 1491 # ZERO_DAMAGE flag were not set. 1492 do_test 24.5 { 1493 file size test.db-wal 1494 } [wal_file_size 1 1024] 1495 } 1496 1497 db close 1498 sqlite3_shutdown 1499 test_sqlite3_log 1500 sqlite3_initialize 1501 1502 # Make sure PRAGMA journal_mode=WAL works with ATTACHED databases in 1503 # all journal modes. 1504 # 1505 foreach mode {OFF MEMORY PERSIST DELETE TRUNCATE WAL} { 1506 delete_file test.db test2.db 1507 sqlite3 db test.db 1508 do_test wal-25.$mode { 1509 db eval "PRAGMA journal_mode=$mode" 1510 db eval {ATTACH 'test2.db' AS t2; PRAGMA journal_mode=WAL;} 1511 } {wal} 1512 db close 1513 } 1514 1515 test_restore_config_pagecache 1516 finish_test