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# 2004 June 30
#
# The author disclaims copyright to this source code. In place of
# a legal notice, here is a blessing:
#
# May you do good and not evil.
# May you find forgiveness for yourself and forgive others.
# May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library. The
# focus of this file is verifying that a rollback in one statement
# caused by an ON CONFLICT ROLLBACK clause aborts any other pending
# statements.
#
# $Id: rollback.test,v 1.11 2009/06/26 07:12:07 danielk1977 Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
set DB [sqlite3_connection_pointer db]
do_test rollback-1.1 {
execsql {
CREATE TABLE t1(a);
INSERT INTO t1 VALUES(1);
INSERT INTO t1 VALUES(2);
INSERT INTO t1 VALUES(3);
INSERT INTO t1 VALUES(4);
SELECT * FROM t1;
}
} {1 2 3 4}
ifcapable conflict {
do_test rollback-1.2 {
execsql {
CREATE TABLE t3(a unique on conflict rollback);
INSERT INTO t3 SELECT a FROM t1;
BEGIN;
INSERT INTO t1 SELECT * FROM t1;
}
} {}
}
do_test rollback-1.3 {
set STMT [sqlite3_prepare $DB "SELECT a FROM t1" -1 TAIL]
sqlite3_step $STMT
} {SQLITE_ROW}
ifcapable conflict {
# This causes a ROLLBACK, which deletes the table out from underneath the
# SELECT statement.
#
do_test rollback-1.4 {
catchsql {
INSERT INTO t3 SELECT a FROM t1;
}
} {1 {column a is not unique}}
# Try to continue with the SELECT statement
#
do_test rollback-1.5 {
sqlite3_step $STMT
} {SQLITE_ERROR}
# Restart the SELECT statement
#
do_test rollback-1.6 { sqlite3_reset $STMT } {SQLITE_ABORT}
} else {
do_test rollback-1.6 { sqlite3_reset $STMT } {SQLITE_OK}
}
do_test rollback-1.7 {
sqlite3_step $STMT
} {SQLITE_ROW}
do_test rollback-1.8 {
sqlite3_step $STMT
} {SQLITE_ROW}
do_test rollback-1.9 {
sqlite3_finalize $STMT
} {SQLITE_OK}
if {$tcl_platform(platform) == "unix"
&& [permutation] ne "onefile"
&& [permutation] ne "inmemory_journal"
} {
do_test rollback-2.1 {
execsql {
BEGIN;
INSERT INTO t3 VALUES('hello world');
}
forcecopy test.db testA.db
forcecopy test.db-journal testA.db-journal
execsql {
COMMIT;
}
} {}
# At this point files testA.db and testA.db-journal are present in the
# file system. This block adds a master-journal file pointer to the
# end of testA.db-journal. The master-journal file does not exist.
#
set mj [file normalize testA.db-mj-123]
binary scan $mj c* a
set cksum 0
foreach i $a { incr cksum $i }
set mj_pgno [expr $sqlite_pending_byte / 1024]
set zAppend [binary format Ia*IIa8 $mj_pgno $mj [string length $mj] $cksum \
"\xd9\xd5\x05\xf9\x20\xa1\x63\xd7"
]
set iOffset [expr (([file size testA.db-journal] + 511)/512)*512]
set fd [open testA.db-journal a+]
fconfigure $fd -encoding binary -translation binary
seek $fd $iOffset
puts -nonewline $fd $zAppend
# Also, fix the first journal-header in the journal-file. Because the
# journal file has not yet been synced, the 8-byte magic string at the
# start of the first journal-header has not been written by SQLite.
# So write it now.
seek $fd 0
puts -nonewline $fd "\xd9\xd5\x05\xf9\x20\xa1\x63\xd7"
close $fd
# Open a handle on testA.db and use it to query the database. At one
# point the first query would attempt a hot rollback, attempt to open
# the master-journal file and return SQLITE_CANTOPEN when it could not
# be opened. This is incorrect, it should simply delete the journal
# file and proceed with the query.
#
do_test rollback-2.2 {
sqlite3 db2 testA.db
execsql {
SELECT distinct tbl_name FROM sqlite_master;
} db2
} {t1 t3}
if {[lsearch {exclusive persistent_journal no_journal} [permutation]]<0} {
do_test rollback-2.3 {
file exists testA.db-journal
} 0
}
do_test rollback-2.4 {
execsql {
SELECT distinct tbl_name FROM sqlite_master;
} db2
} {t1 t3}
db2 close
}
finish_test
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