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sqlite/test/backup.test
dan 3115b36d67 Fix a segfault that could occur if a non-empty in-memory database was the destination of a backup operation from a database with a smaller page size. 
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2023-04-19 17:07:35 +00:00

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# 2009 January 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 testing the sqlite3_backup_XXX API.
#
# $Id: backup.test,v 1.11 2009/06/05 17:09:12 drh Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
do_not_use_codec
#---------------------------------------------------------------------
# Test organization:
#
# backup-1.*: Warm-body tests.
#
# backup-2.*: Test backup under various conditions. To and from in-memory
# databases. To and from empty/populated databases. etc.
#
# backup-3.*: Verify that the locking-page (pending byte page) is handled.
#
# backup-4.*: Test various error conditions.
#
# backup-5.*: Test the source database being modified during a backup.
#
# backup-6.*: Test the backup_remaining() and backup_pagecount() APIs.
#
# backup-7.*: Test SQLITE_BUSY and SQLITE_LOCKED errors.
#
# backup-8.*: Test multiple simultaneous backup operations.
#
# backup-9.*: Test that passing a negative argument to backup_step() is
# interpreted as "copy the whole file".
#
# backup-10.*: Test writing the source database mid backup.
#
proc data_checksum {db file} { $db one "SELECT md5sum(a, b) FROM ${file}.t1" }
proc test_contents {name db1 file1 db2 file2} {
$db2 eval {select * from sqlite_master}
$db1 eval {select * from sqlite_master}
set checksum [data_checksum $db2 $file2]
uplevel [list do_test $name [list data_checksum $db1 $file1] $checksum]
}
do_test backup-1.1 {
execsql {
BEGIN;
CREATE TABLE t1(a, b);
CREATE INDEX i1 ON t1(a, b);
INSERT INTO t1 VALUES(1, randstr(1000,1000));
INSERT INTO t1 VALUES(2, randstr(1000,1000));
INSERT INTO t1 VALUES(3, randstr(1000,1000));
INSERT INTO t1 VALUES(4, randstr(1000,1000));
INSERT INTO t1 VALUES(5, randstr(1000,1000));
COMMIT;
}
} {}
# Sanity check to verify that the [test_contents] proc works.
#
test_contents backup-1.2 db main db main
# Check that it is possible to create and finish backup operations.
#
do_test backup-1.3.1 {
delete_file test2.db
sqlite3 db2 test2.db
sqlite3_backup B db2 main db main
} {B}
do_test backup-1.3.2 {
B finish
} {SQLITE_OK}
do_test backup-1.3.3 {
info commands B
} {}
# Simplest backup operation. Backup test.db to test2.db. test2.db is
# initially empty. test.db uses the default page size.
#
do_test backup-1.4.1 {
sqlite3_backup B db2 main db main
} {B}
do_test backup-1.4.2 {
B step 200
} {SQLITE_DONE}
do_test backup-1.4.3 {
B finish
} {SQLITE_OK}
do_test backup-1.4.4 {
info commands B
} {}
test_contents backup-1.4.5 db2 main db main
db close
db2 close
#
# End of backup-1.* tests.
#---------------------------------------------------------------------
#---------------------------------------------------------------------
# The following tests, backup-2.*, are based on the following procedure:
#
# 1) Populate the source database.
# 2) Populate the destination database.
# 3) Run the backup to completion. (backup-2.*.1)
# 4) Integrity check the destination db. (backup-2.*.2)
# 5) Check that the contents of the destination db is the same as that
# of the source db. (backup-2.*.3)
#
# The test is run with all possible combinations of the following
# input parameters, except that if the destination is an in-memory
# database, the only page size tested is 1024 bytes (the same as the
# source page-size).
#
# * Source database is an in-memory database, OR
# * Source database is a file-backed database.
#
# * Target database is an in-memory database, OR
# * Target database is a file-backed database.
#
# * Destination database is a main file, OR
# * Destination database is an attached file, OR
# * Destination database is a temp database.
#
# * Target database is empty (zero bytes), OR
# * Target database is larger than the source, OR
# * Target database is smaller than the source.
#
# * Target database page-size is the same as the source, OR
# * Target database page-size is larger than the source, OR
# * Target database page-size is smaller than the source.
#
# * Each call to step copies a single page, OR
# * A single call to step copies the entire source database.
#
set iTest 1
foreach zSrcFile {test.db :memory:} {
foreach zDestFile {test2.db :memory:} {
foreach zOpenScript [list {
sqlite3 db $zSrcFile
sqlite3 db2 $zSrcFile
db2 eval "ATTACH '$zDestFile' AS bak"
set db_dest db2
set file_dest bak
} {
sqlite3 db $zSrcFile
sqlite3 db2 $zDestFile
set db_dest db2
set file_dest main
} {
sqlite3 db $zSrcFile
sqlite3 db2 $zDestFile
set db_dest db2
set file_dest temp
}] {
foreach rows_dest {0 3 10} {
foreach pgsz_dest {512 1024 2048 4096} {
foreach nPagePerStep {1 200} {
# Open the databases.
catch { delete_file test.db }
catch { delete_file test2.db }
eval $zOpenScript
# Set to true if copying to an in-memory destination. Copying to an
# in-memory destination is only possible if the initial destination
# page size is the same as the source page size (in this case 1024 bytes).
#
set isMemDest [expr { $zDestFile eq ":memory:" || $file_dest eq "temp" }]
if 0 {
puts -nonewline "Test $iTest: src=$zSrcFile dest=$zDestFile"
puts -nonewline " (as $db_dest.$file_dest)"
puts -nonewline " rows_dest=$rows_dest pgsz_dest=$pgsz_dest"
puts ""
}
if { $isMemDest==0 || $pgsz_dest==1024 || $rows_dest==0 } {
# Set up the content of the source database.
execsql {
PRAGMA page_size = 1024;
BEGIN;
CREATE TABLE t1(a, b);
CREATE INDEX i1 ON t1(a, b);
INSERT INTO t1 VALUES(1, randstr(1000,1000));
INSERT INTO t1 VALUES(2, randstr(1000,1000));
INSERT INTO t1 VALUES(3, randstr(1000,1000));
INSERT INTO t1 VALUES(4, randstr(1000,1000));
INSERT INTO t1 VALUES(5, randstr(1000,1000));
COMMIT;
}
# Set up the content of the target database.
execsql "PRAGMA ${file_dest}.page_size = ${pgsz_dest}" $db_dest
if {$rows_dest != 0} {
execsql "
BEGIN;
CREATE TABLE ${file_dest}.t1(a, b);
CREATE INDEX ${file_dest}.i1 ON t1(a, b);
" $db_dest
for {set ii 0} {$ii < $rows_dest} {incr ii} {
execsql "
INSERT INTO ${file_dest}.t1 VALUES(1, randstr(1000,1000))
" $db_dest
}
execsql COMMIT $db_dest
}
# Backup the source database.
do_test backup-2.$iTest.1 {
sqlite3_backup B $db_dest $file_dest db main
while {[B step $nPagePerStep]=="SQLITE_OK"} {}
B finish
} {SQLITE_OK}
# Run integrity check on the backup.
do_test backup-2.$iTest.2 {
execsql "PRAGMA ${file_dest}.integrity_check" $db_dest
} {ok}
test_contents backup-2.$iTest.3 db main $db_dest $file_dest
}
db close
catch {db2 close}
incr iTest
} } } } } }
#
# End of backup-2.* tests.
#---------------------------------------------------------------------
#---------------------------------------------------------------------
# These tests, backup-3.*, ensure that nothing goes wrong if either
# the source or destination database are large enough to include the
# the locking-page (the page that contains the range of bytes that
# the locks are applied to). These tests assume that the pending
# byte is at offset 0x00010000 (64KB offset), as set by tester.tcl,
# not at the 1GB offset as it usually is.
#
# The test procedure is as follows (same procedure as used for
# the backup-2.* tests):
#
# 1) Populate the source database.
# 2) Populate the destination database.
# 3) Run the backup to completion. (backup-3.*.1)
# 4) Integrity check the destination db. (backup-3.*.2)
# 5) Check that the contents of the destination db is the same as that
# of the source db. (backup-3.*.3)
#
# The test procedure is run with the following parameters varied:
#
# * Source database includes pending-byte page.
# * Source database does not include pending-byte page.
#
# * Target database includes pending-byte page.
# * Target database does not include pending-byte page.
#
# * Target database page-size is the same as the source, OR
# * Target database page-size is larger than the source, OR
# * Target database page-size is smaller than the source.
#
set iTest 1
foreach nSrcPg {10 64 65 66 100} {
foreach nDestRow {10 100} {
foreach nDestPgsz {512 1024 2048 4096} {
catch { delete_file test.db }
catch { delete_file test2.db }
sqlite3 db test.db
sqlite3 db2 test2.db
# Set up the content of the two databases.
#
execsql { PRAGMA page_size = 1024 }
execsql "PRAGMA page_size = $nDestPgsz" db2
foreach db {db db2} {
execsql {
BEGIN;
CREATE TABLE t1(a, b);
CREATE INDEX i1 ON t1(a, b);
COMMIT;
} $db
}
while {[file size test.db]/1024 < $nSrcPg} {
execsql { INSERT INTO t1 VALUES($ii, randstr(200,200)) }
}
for {set ii 0} {$ii < $nDestRow} {incr ii} {
execsql { INSERT INTO t1 VALUES($ii, randstr(1000,1000)) } db2
}
# Backup the source database.
do_test backup-3.$iTest.1 {
sqlite3_backup B db main db2 main
while {[B step 10]=="SQLITE_OK"} {}
B finish
} {SQLITE_OK}
# Run integrity check on the backup.
do_test backup-3.$iTest.2 {
execsql "PRAGMA integrity_check" db2
} {ok}
test_contents backup-3.$iTest.3 db main db2 main
db close
db2 close
incr iTest
}
}
}
#--------------------------------------------------------------------
do_test backup-3.$iTest.1 {
catch { forcedelete test.db }
catch { forcedelete test2.db }
sqlite3 db test.db
set iTab 1
db eval { PRAGMA page_size = 512 }
while {[file size test.db] <= $::sqlite_pending_byte} {
db eval "CREATE TABLE t${iTab}(a, b, c)"
incr iTab
}
sqlite3 db2 test2.db
db2 eval { PRAGMA page_size = 4096 }
while {[file size test2.db] < $::sqlite_pending_byte} {
db2 eval "CREATE TABLE t${iTab}(a, b, c)"
incr iTab
}
sqlite3_backup B db2 main db main
B step -1
} {SQLITE_DONE}
do_test backup-3.$iTest.2 {
B finish
} {SQLITE_OK}
#
# End of backup-3.* tests.
#---------------------------------------------------------------------
#---------------------------------------------------------------------
# The following tests, backup-4.*, test various error conditions:
#
# backup-4.1.*: Test invalid database names.
#
# backup-4.2.*: Test that the source database cannot be detached while
# a backup is in progress.
#
# backup-4.3.*: Test that the source database handle cannot be closed
# while a backup is in progress.
#
# backup-4.4.*: Test an attempt to specify the same handle for the
# source and destination databases.
#
# backup-4.5.*: Test that an in-memory destination with a different
# page-size to the source database is an error.
#
sqlite3 db test.db
sqlite3 db2 test2.db
do_test backup-4.1.1 {
catch { sqlite3_backup B db aux db2 main }
} {1}
do_test backup-4.1.2 {
sqlite3_errmsg db
} {unknown database aux}
do_test backup-4.1.3 {
catch { sqlite3_backup B db main db2 aux }
} {1}
do_test backup-4.1.4 {
sqlite3_errmsg db
} {unknown database aux}
do_test backup-4.2.1 {
catch { forcedelete test3.db }
catch { forcedelete test4.db }
execsql {
ATTACH 'test3.db' AS aux1;
CREATE TABLE aux1.t1(a, b);
}
execsql {
ATTACH 'test4.db' AS aux2;
CREATE TABLE aux2.t2(a, b);
} db2
sqlite3_backup B db aux1 db2 aux2
} {B}
do_test backup-4.2.2 {
catchsql { DETACH aux2 } db2
} {1 {database aux2 is locked}}
do_test backup-4.2.3 {
B step 50
} {SQLITE_DONE}
do_test backup-4.2.4 {
B finish
} {SQLITE_OK}
do_test backup-4.3.1 {
sqlite3_backup B db aux1 db2 aux2
} {B}
do_test backup-4.3.2 {
db2 cache flush
sqlite3_close db2
} {SQLITE_BUSY}
do_test backup-4.3.3 {
sqlite3_errmsg db2
} {unable to close due to unfinalized statements or unfinished backups}
do_test backup-4.3.4 {
B step 50
} {SQLITE_DONE}
do_test backup-4.3.5 {
B finish
} {SQLITE_OK}
do_test backup-4.4.1 {
set rc [catch {sqlite3_backup B db main db aux1}]
list $rc [sqlite3_errcode db] [sqlite3_errmsg db]
} {1 SQLITE_ERROR {source and destination must be distinct}}
db close
db2 close
do_test backup-4.5.1 {
catch { forcedelete test.db }
sqlite3 db test.db
sqlite3 db2 :memory:
execsql {
CREATE TABLE t1(a, b);
INSERT INTO t1 VALUES(1, 2);
}
execsql {
PRAGMA page_size = 4096;
CREATE TABLE t2(a, b);
INSERT INTO t2 VALUES(3, 4);
} db2
sqlite3_backup B db2 main db main
} {B}
do_test backup-4.5.2 {
B step 5000
} {SQLITE_READONLY}
do_test backup-4.5.3 {
B finish
} {SQLITE_READONLY}
db close
db2 close
#
# End of backup-4.* tests.
#---------------------------------------------------------------------
#---------------------------------------------------------------------
# The following tests, backup-5.*, test that the backup works properly
# when the source database is modified during the backup. Test cases
# are organized as follows:
#
# backup-5.x.1.*: Nothing special. Modify the database mid-backup.
#
# backup-5.x.2.*: Modify the database mid-backup so that one or more
# pages are written out due to cache stress. Then
# rollback the transaction.
#
# backup-5.x.3.*: Database is vacuumed.
#
# backup-5.x.4.*: Database is vacuumed and the page-size modified.
#
# backup-5.x.5.*: Database is shrunk via incr-vacuum.
#
# Each test is run three times, in the following configurations:
#
# 1) Backing up file-to-file. The writer writes via an external pager.
# 2) Backing up file-to-file. The writer writes via the same pager as
# is used by the backup operation.
# 3) Backing up memory-to-file.
#
set iTest 0
forcedelete bak.db-wal
foreach {writer file} {db test.db db3 test.db db :memory:} {
incr iTest
catch { delete_file bak.db }
sqlite3 db2 bak.db
catch { delete_file $file }
sqlite3 db $file
sqlite3 db3 $file
do_test backup-5.$iTest.1.1 {
execsql {
BEGIN;
CREATE TABLE t1(a, b);
CREATE INDEX i1 ON t1(a, b);
INSERT INTO t1 VALUES(1, randstr(1000,1000));
INSERT INTO t1 VALUES(2, randstr(1000,1000));
INSERT INTO t1 VALUES(3, randstr(1000,1000));
INSERT INTO t1 VALUES(4, randstr(1000,1000));
INSERT INTO t1 VALUES(5, randstr(1000,1000));
COMMIT;
}
expr {[execsql {PRAGMA page_count}] > 10}
} {1}
do_test backup-5.$iTest.1.2 {
sqlite3_backup B db2 main db main
B step 5
} {SQLITE_OK}
do_test backup-5.$iTest.1.3 {
execsql { UPDATE t1 SET a = a + 1 } $writer
B step 50
} {SQLITE_DONE}
do_test backup-5.$iTest.1.4 {
B finish
} {SQLITE_OK}
integrity_check backup-5.$iTest.1.5 db2
test_contents backup-5.$iTest.1.6 db main db2 main
do_test backup-5.$iTest.2.1 {
execsql {
PRAGMA cache_size = 10;
BEGIN;
INSERT INTO t1 SELECT '', randstr(1000,1000) FROM t1;
INSERT INTO t1 SELECT '', randstr(1000,1000) FROM t1;
INSERT INTO t1 SELECT '', randstr(1000,1000) FROM t1;
INSERT INTO t1 SELECT '', randstr(1000,1000) FROM t1;
COMMIT;
}
} {}
do_test backup-5.$iTest.2.2 {
sqlite3_backup B db2 main db main
B step 50
} {SQLITE_OK}
do_test backup-5.$iTest.2.3 {
execsql {
BEGIN;
UPDATE t1 SET a = a + 1;
ROLLBACK;
} $writer
B step 5000
} {SQLITE_DONE}
do_test backup-5.$iTest.2.4 {
B finish
} {SQLITE_OK}
integrity_check backup-5.$iTest.2.5 db2
test_contents backup-5.$iTest.2.6 db main db2 main
do_test backup-5.$iTest.3.1 {
execsql { UPDATE t1 SET b = randstr(1000,1000) }
} {}
do_test backup-5.$iTest.3.2 {
sqlite3_backup B db2 main db main
B step 50
} {SQLITE_OK}
do_test backup-5.$iTest.3.3 {
execsql { VACUUM } $writer
B step 5000
} {SQLITE_DONE}
do_test backup-5.$iTest.3.4 {
B finish
} {SQLITE_OK}
integrity_check backup-5.$iTest.3.5 db2
test_contents backup-5.$iTest.3.6 db main db2 main
do_test backup-5.$iTest.4.1 {
execsql { UPDATE t1 SET b = randstr(1000,1000) }
} {}
do_test backup-5.$iTest.4.2 {
sqlite3_backup B db2 main db main
B step 50
} {SQLITE_OK}
do_test backup-5.$iTest.4.3 {
execsql {
PRAGMA page_size = 2048;
VACUUM;
} $writer
B step 5000
} {SQLITE_DONE}
do_test backup-5.$iTest.4.4 {
B finish
} {SQLITE_OK}
integrity_check backup-5.$iTest.4.5 db2
test_contents backup-5.$iTest.4.6 db main db2 main
catch {db close}
catch {db2 close}
catch {db3 close}
catch { delete_file bak.db }
sqlite3 db2 bak.db
catch { delete_file $file }
sqlite3 db $file
sqlite3 db3 $file
do_test backup-5.$iTest.5.1 {
execsql {
PRAGMA auto_vacuum = incremental;
BEGIN;
CREATE TABLE t1(a, b);
CREATE INDEX i1 ON t1(a, b);
INSERT INTO t1 VALUES(1, randstr(1000,1000));
INSERT INTO t1 VALUES(2, randstr(1000,1000));
INSERT INTO t1 VALUES(3, randstr(1000,1000));
INSERT INTO t1 VALUES(4, randstr(1000,1000));
INSERT INTO t1 VALUES(5, randstr(1000,1000));
COMMIT;
}
} {}
do_test backup-5.$iTest.5.2 {
sqlite3_backup B db2 main db main
B step 8
} {SQLITE_OK}
do_test backup-5.$iTest.5.3 {
execsql {
DELETE FROM t1;
PRAGMA incremental_vacuum;
} $writer
B step 50
} {SQLITE_DONE}
do_test backup-5.$iTest.5.4 {
B finish
} {SQLITE_OK}
integrity_check backup-5.$iTest.5.5 db2
test_contents backup-5.$iTest.5.6 db main db2 main
catch {db close}
catch {db2 close}
catch {db3 close}
}
#
# End of backup-5.* tests.
#---------------------------------------------------------------------
#---------------------------------------------------------------------
# Test the sqlite3_backup_remaining() and backup_pagecount() APIs.
#
do_test backup-6.1 {
catch { forcedelete test.db }
catch { forcedelete test2.db }
sqlite3 db test.db
sqlite3 db2 test2.db
execsql {
BEGIN;
CREATE TABLE t1(a, b);
CREATE INDEX i1 ON t1(a, b);
INSERT INTO t1 VALUES(1, randstr(1000,1000));
INSERT INTO t1 VALUES(2, randstr(1000,1000));
INSERT INTO t1 VALUES(3, randstr(1000,1000));
INSERT INTO t1 VALUES(4, randstr(1000,1000));
INSERT INTO t1 VALUES(5, randstr(1000,1000));
COMMIT;
}
} {}
do_test backup-6.2 {
set nTotal [expr {[file size test.db]/1024}]
sqlite3_backup B db2 main db main
B step 1
} {SQLITE_OK}
do_test backup-6.3 {
B pagecount
} $nTotal
do_test backup-6.4 {
B remaining
} [expr $nTotal-1]
do_test backup-6.5 {
B step 5
list [B remaining] [B pagecount]
} [list [expr $nTotal-6] $nTotal]
do_test backup-6.6 {
execsql { CREATE TABLE t2(a PRIMARY KEY, b) }
B step 1
list [B remaining] [B pagecount]
} [list [expr $nTotal-5] [expr $nTotal+2]]
do_test backup-6.X {
B finish
} {SQLITE_OK}
catch {db close}
catch {db2 close}
#---------------------------------------------------------------------
# Test cases backup-7.* test that SQLITE_BUSY and SQLITE_LOCKED errors
# are returned correctly:
#
# backup-7.1.*: Source database is externally locked (return SQLITE_BUSY).
#
# backup-7.2.*: Attempt to step the backup process while a
# write-transaction is underway on the source pager (return
# SQLITE_LOCKED).
#
# backup-7.3.*: Destination database is externally locked (return SQLITE_BUSY).
#
do_test backup-7.0 {
catch { forcedelete test.db }
catch { forcedelete test2.db }
sqlite3 db2 test2.db
sqlite3 db test.db
execsql {
CREATE TABLE t1(a, b);
CREATE INDEX i1 ON t1(a, b);
INSERT INTO t1 VALUES(1, randstr(1000,1000));
INSERT INTO t1 SELECT a+ 1, randstr(1000,1000) FROM t1;
INSERT INTO t1 SELECT a+ 2, randstr(1000,1000) FROM t1;
INSERT INTO t1 SELECT a+ 4, randstr(1000,1000) FROM t1;
INSERT INTO t1 SELECT a+ 8, randstr(1000,1000) FROM t1;
INSERT INTO t1 SELECT a+16, randstr(1000,1000) FROM t1;
INSERT INTO t1 SELECT a+32, randstr(1000,1000) FROM t1;
INSERT INTO t1 SELECT a+64, randstr(1000,1000) FROM t1;
}
} {}
do_test backup-7.1.1 {
sqlite3_backup B db2 main db main
B step 5
} {SQLITE_OK}
do_test backup-7.1.2 {
sqlite3 db3 test.db
execsql { BEGIN EXCLUSIVE } db3
B step 5
} {SQLITE_BUSY}
do_test backup-7.1.3 {
execsql { ROLLBACK } db3
B step 5
} {SQLITE_OK}
do_test backup-7.2.1 {
execsql {
BEGIN;
INSERT INTO t1 VALUES(1, 4);
}
} {}
do_test backup-7.2.2 {
B step 5000
} {SQLITE_BUSY}
do_test backup-7.2.3 {
execsql { ROLLBACK }
B step 5000
} {SQLITE_DONE}
do_test backup-7.2.4 {
B finish
} {SQLITE_OK}
test_contents backup-7.2.5 db main db2 main
integrity_check backup-7.3.6 db2
do_test backup-7.3.1 {
db2 close
db3 close
forcedelete test2.db
sqlite3 db2 test2.db
sqlite3 db3 test2.db
sqlite3_backup B db2 main db main
execsql { BEGIN ; CREATE TABLE t2(a, b); } db3
B step 5
} {SQLITE_BUSY}
do_test backup-7.3.2 {
execsql { COMMIT } db3
B step 5000
} {SQLITE_DONE}
do_test backup-7.3.3 {
B finish
} {SQLITE_OK}
test_contents backup-7.3.4 db main db2 main
integrity_check backup-7.3.5 db2
catch { db2 close }
catch { db3 close }
#-----------------------------------------------------------------------
# The following tests, backup-8.*, test attaching multiple backup
# processes to the same source database. Also, reading from the source
# database while a read transaction is active.
#
# These tests reuse the database "test.db" left over from backup-7.*.
#
do_test backup-8.1 {
catch { forcedelete test2.db }
catch { forcedelete test3.db }
sqlite3 db2 test2.db
sqlite3 db3 test3.db
sqlite3_backup B2 db2 main db main
sqlite3_backup B3 db3 main db main
list [B2 finish] [B3 finish]
} {SQLITE_OK SQLITE_OK}
do_test backup-8.2 {
sqlite3_backup B3 db3 main db main
sqlite3_backup B2 db2 main db main
list [B2 finish] [B3 finish]
} {SQLITE_OK SQLITE_OK}
do_test backup-8.3 {
sqlite3_backup B2 db2 main db main
sqlite3_backup B3 db3 main db main
B2 step 5
} {SQLITE_OK}
do_test backup-8.4 {
execsql {
BEGIN;
SELECT * FROM sqlite_master;
}
B3 step 5
} {SQLITE_OK}
do_test backup-8.5 {
list [B3 step 5000] [B3 finish]
} {SQLITE_DONE SQLITE_OK}
do_test backup-8.6 {
list [B2 step 5000] [B2 finish]
} {SQLITE_DONE SQLITE_OK}
test_contents backup-8.7 db main db2 main
test_contents backup-8.8 db main db3 main
do_test backup-8.9 {
execsql { PRAGMA lock_status }
} {main shared temp closed}
do_test backup-8.10 {
execsql COMMIT
} {}
catch { db2 close }
catch { db3 close }
#-----------------------------------------------------------------------
# The following tests, backup-9.*, test that:
#
# * Passing 0 as an argument to sqlite3_backup_step() means no pages
# are backed up (backup-9.1.*), and
# * Passing a negative value as an argument to sqlite3_backup_step() means
# all pages are backed up (backup-9.2.*).
#
# These tests reuse the database "test.db" left over from backup-7.*.
#
do_test backup-9.1.1 {
sqlite3 db2 test2.db
sqlite3_backup B db2 main db main
B step 1
} {SQLITE_OK}
do_test backup-9.1.2 {
set nRemaining [B remaining]
expr {$nRemaining>100}
} {1}
do_test backup-9.1.3 {
B step 0
} {SQLITE_OK}
do_test backup-9.1.4 {
B remaining
} $nRemaining
do_test backup-9.2.1 {
B step -1
} {SQLITE_DONE}
do_test backup-9.2.2 {
B remaining
} {0}
do_test backup-9.2.3 {
B finish
} {SQLITE_OK}
catch {db2 close}
ifcapable memorymanage {
db close
forcedelete test.db
forcedelete bak.db
sqlite3 db test.db
sqlite3 db2 test.db
sqlite3 db3 bak.db
do_test backup-10.1.1 {
execsql {
BEGIN;
CREATE TABLE t1(a, b);
INSERT INTO t1 VALUES(1, randstr(1000,1000));
INSERT INTO t1 VALUES(2, randstr(1000,1000));
INSERT INTO t1 VALUES(3, randstr(1000,1000));
INSERT INTO t1 VALUES(4, randstr(1000,1000));
INSERT INTO t1 VALUES(5, randstr(1000,1000));
CREATE INDEX i1 ON t1(a, b);
COMMIT;
}
} {}
do_test backup-10.1.2 {
sqlite3_backup B db3 main db2 main
B step 5
} {SQLITE_OK}
do_test backup-10.1.3 {
execsql {
UPDATE t1 SET b = randstr(500,500);
}
} {}
sqlite3_release_memory [expr 1024*1024]
do_test backup-10.1.3 {
B step 50
} {SQLITE_DONE}
do_test backup-10.1.4 {
B finish
} {SQLITE_OK}
do_test backup-10.1.5 {
execsql { PRAGMA integrity_check } db3
} {ok}
db2 close
db3 close
}
#-----------------------------------------------------------------------
# Test that if the database is written to via the same database handle being
# used as the source by a backup operation:
#
# 10.1.*: If the db is in-memory, the backup is restarted.
# 10.2.*: If the db is a file, the backup is not restarted.
#
db close
forcedelete test.db test.db-journal
foreach {tn file rc} {
1 test.db SQLITE_DONE
2 :memory: SQLITE_OK
} {
do_test backup-10.$tn.1 {
sqlite3 db $file
execsql {
CREATE TABLE t1(a INTEGER PRIMARY KEY, b BLOB);
BEGIN;
INSERT INTO t1 VALUES(NULL, randomblob(200));
INSERT INTO t1 SELECT NULL, randomblob(200) FROM t1;
INSERT INTO t1 SELECT NULL, randomblob(200) FROM t1;
INSERT INTO t1 SELECT NULL, randomblob(200) FROM t1;
INSERT INTO t1 SELECT NULL, randomblob(200) FROM t1;
INSERT INTO t1 SELECT NULL, randomblob(200) FROM t1;
INSERT INTO t1 SELECT NULL, randomblob(200) FROM t1;
INSERT INTO t1 SELECT NULL, randomblob(200) FROM t1;
INSERT INTO t1 SELECT NULL, randomblob(200) FROM t1;
COMMIT;
SELECT count(*) FROM t1;
}
} {256}
do_test backup-10.$tn.2 {
set pgs [execsql {pragma page_count}]
expr {$pgs > 50 && $pgs < 75}
} {1}
do_test backup-10.$tn.3 {
forcedelete bak.db bak.db-journal
sqlite3 db2 bak.db
sqlite3_backup B db2 main db main
B step 50
} {SQLITE_OK}
do_test backup-10.$tn.4 {
execsql { UPDATE t1 SET b = randomblob(200) WHERE a IN (1, 250) }
} {}
do_test backup-10.$tn.5 {
B step 50
} $rc
do_test backup-10.$tn.6 {
B finish
} {SQLITE_OK}
db2 close
}
# 2021-01-31 https://sqlite.org/forum/forumpost/8b39fbf3e7
#
do_test backup-11.1 {
sqlite3 db1 :memory:
sqlite3 db2 :memory:
sqlite3_backup B db1 main db2 temp
B finish
} {SQLITE_OK}
db1 close
db2 close
#-------------------------------------------------------------------------
do_test backup-12.1 {
sqlite3 db1 :memory:
sqlite3 db2 :memory:
db1 eval {
PRAGMA page_size = 8192;
CREATE TABLE t1(x);
}
db2 eval {
PRAGMA page_size = 1024;
CREATE TABLE t2(x);
}
sqlite3_backup B db1 main db2 temp
B step 100
B finish
} {SQLITE_READONLY}
finish_test
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