1# 2010 September 20 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. 12# 13# This file implements tests to verify that ticket [313723c356] has been 14# fixed. 15# 16 17set testdir [file dirname $argv0] 18source $testdir/tester.tcl 19source $testdir/malloc_common.tcl 20 21ifcapable !wal { finish_test ; return } 22 23do_execsql_test tkt-313723c356.1 { 24 PRAGMA page_size = 1024; 25 PRAGMA journal_mode = WAL; 26 CREATE TABLE t1(a, b); 27 CREATE INDEX i1 ON t1(a, b); 28 INSERT INTO t1 VALUES(randomblob(400), randomblob(400)); 29 INSERT INTO t1 SELECT randomblob(400), randomblob(400) FROM t1; 30 INSERT INTO t1 SELECT randomblob(400), randomblob(400) FROM t1; 31 INSERT INTO t1 SELECT randomblob(400), randomblob(400) FROM t1; 32 INSERT INTO t1 SELECT randomblob(400), randomblob(400) FROM t1; 33} {wal} 34faultsim_save_and_close 35 36do_faultsim_test tkt-313723c356.2 -faults shmerr* -prep { 37 faultsim_restore_and_reopen 38 sqlite3 db2 test.db 39 db eval { SELECT * FROM t1 } 40 db2 eval { UPDATE t1 SET a = randomblob(399) } 41 db2 close 42} -body { 43 # At this point, the cache contains all of table t1 and none of index i1. The 44 # cache is out of date. When the bug existed and the right xShmLock() fails 45 # in the following statement, the internal cache of the WAL header was 46 # being updated, but the contents of the page-cache not flushed. This causes 47 # the integrity-check in the "-test" code to fail, as it is comparing the 48 # cached (out-of-date) version of table t1 with the on disk (up-to-date) 49 # version of index i1. 50 # 51 execsql { SELECT min(rowid) FROM t1 } 52} -test { 53 faultsim_test_result {0 1} 54 faultsim_integrity_check 55} 56 57finish_test 58