# 2001 September 15

#

# 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 script is database locks.

#

# $Id: trans.test,v 1.38 2008/04/19 20:34:19 drh Exp $

set testdir [file dirname $argv0]

source $testdir/tester.tcl

# Create several tables to work with.

#

do_test trans-1.0 {

  execsql {

    CREATE TABLE one(a int PRIMARY KEY, b text);

    INSERT INTO one VALUES(1,'one');

    INSERT INTO one VALUES(2,'two');

    INSERT INTO one VALUES(3,'three');

    SELECT b FROM one ORDER BY a;

  }

} {one two three}

integrity_check trans-1.0.1

do_test trans-1.1 {

  execsql {

    CREATE TABLE two(a int PRIMARY KEY, b text);

    INSERT INTO two VALUES(1,'I');

    INSERT INTO two VALUES(5,'V');

    INSERT INTO two VALUES(10,'X');

    SELECT b FROM two ORDER BY a;

  }

} {I V X}

do_test trans-1.9 {

  sqlite3 altdb test.db

  execsql {SELECT b FROM one ORDER BY a} altdb

} {one two three}

do_test trans-1.10 {

  execsql {SELECT b FROM two ORDER BY a} altdb

} {I V X}

integrity_check trans-1.11

# Basic transactions

#

do_test trans-2.1 {

  set v [catch {execsql {BEGIN}} msg]

  lappend v $msg

} {0 {}}

do_test trans-2.2 {

  set v [catch {execsql {END}} msg]

  lappend v $msg

} {0 {}}

do_test trans-2.3 {

  set v [catch {execsql {BEGIN TRANSACTION}} msg]

  lappend v $msg

} {0 {}}

do_test trans-2.4 {

  set v [catch {execsql {COMMIT TRANSACTION}} msg]

  lappend v $msg

} {0 {}}

do_test trans-2.5 {

  set v [catch {execsql {BEGIN TRANSACTION 'foo'}} msg]

  lappend v $msg

} {0 {}}

do_test trans-2.6 {

  set v [catch {execsql {ROLLBACK TRANSACTION 'foo'}} msg]

  lappend v $msg

} {0 {}}

do_test trans-2.10 {

  execsql {

    BEGIN;

    SELECT a FROM one ORDER BY a;

    SELECT a FROM two ORDER BY a;

    END;

  }

} {1 2 3 1 5 10}

integrity_check trans-2.11

# Check the locking behavior

#

do_test trans-3.1 {

  execsql {

    BEGIN;

    UPDATE one SET a = 0 WHERE 0;

    SELECT a FROM one ORDER BY a;

  }

} {1 2 3}

do_test trans-3.2 {

  catchsql {

    SELECT a FROM two ORDER BY a;

  } altdb

} {0 {1 5 10}}

do_test trans-3.3 {

  catchsql {

    SELECT a FROM one ORDER BY a;

  } altdb

} {0 {1 2 3}}

do_test trans-3.4 {

  catchsql {

    INSERT INTO one VALUES(4,'four');

  }

} {0 {}}

do_test trans-3.5 {

  catchsql {

    SELECT a FROM two ORDER BY a;

  } altdb

} {0 {1 5 10}}

do_test trans-3.6 {

  catchsql {

    SELECT a FROM one ORDER BY a;

  } altdb

} {0 {1 2 3}}

do_test trans-3.7 {

  catchsql {

    INSERT INTO two VALUES(4,'IV');

  }

} {0 {}}

do_test trans-3.8 {

  catchsql {

    SELECT a FROM two ORDER BY a;

  } altdb

} {0 {1 5 10}}

do_test trans-3.9 {

  catchsql {

    SELECT a FROM one ORDER BY a;

  } altdb

} {0 {1 2 3}}

do_test trans-3.10 {

  execsql {END TRANSACTION}

} {}

do_test trans-3.11 {

  set v [catch {execsql {

    SELECT a FROM two ORDER BY a;

  } altdb} msg]

  lappend v $msg

} {0 {1 4 5 10}}

do_test trans-3.12 {

  set v [catch {execsql {

    SELECT a FROM one ORDER BY a;

  } altdb} msg]

  lappend v $msg

} {0 {1 2 3 4}}

do_test trans-3.13 {

  set v [catch {execsql {

    SELECT a FROM two ORDER BY a;

  } db} msg]

  lappend v $msg

} {0 {1 4 5 10}}

do_test trans-3.14 {

  set v [catch {execsql {

    SELECT a FROM one ORDER BY a;

  } db} msg]

  lappend v $msg

} {0 {1 2 3 4}}

integrity_check trans-3.15

do_test trans-4.1 {

  set v [catch {execsql {

    COMMIT;

  } db} msg]

  lappend v $msg

} {1 {cannot commit - no transaction is active}}

do_test trans-4.2 {

  set v [catch {execsql {

    ROLLBACK;

  } db} msg]

  lappend v $msg

} {1 {cannot rollback - no transaction is active}}

do_test trans-4.3 {

  catchsql {

    BEGIN TRANSACTION;

    UPDATE two SET a = 0 WHERE 0;

    SELECT a FROM two ORDER BY a;

  } db

} {0 {1 4 5 10}}

do_test trans-4.4 {

  catchsql {

    SELECT a FROM two ORDER BY a;

  } altdb

} {0 {1 4 5 10}}

do_test trans-4.5 {

  catchsql {

    SELECT a FROM one ORDER BY a;

  } altdb

} {0 {1 2 3 4}}

do_test trans-4.6 {

  catchsql {

    BEGIN TRANSACTION;

    SELECT a FROM one ORDER BY a;

  } db

} {1 {cannot start a transaction within a transaction}}

do_test trans-4.7 {

  catchsql {

    SELECT a FROM two ORDER BY a;

  } altdb

} {0 {1 4 5 10}}

do_test trans-4.8 {

  catchsql {

    SELECT a FROM one ORDER BY a;

  } altdb

} {0 {1 2 3 4}}

do_test trans-4.9 {

  set v [catch {execsql {

    END TRANSACTION;

    SELECT a FROM two ORDER BY a;

  } db} msg]

  lappend v $msg

} {0 {1 4 5 10}}

do_test trans-4.10 {

  set v [catch {execsql {

    SELECT a FROM two ORDER BY a;

  } altdb} msg]

  lappend v $msg

} {0 {1 4 5 10}}

do_test trans-4.11 {

  set v [catch {execsql {

    SELECT a FROM one ORDER BY a;

  } altdb} msg]

  lappend v $msg

} {0 {1 2 3 4}}

integrity_check trans-4.12

do_test trans-4.98 {

  altdb close

  execsql {

    DROP TABLE one;

    DROP TABLE two;

  }

} {}

integrity_check trans-4.99

# Check out the commit/rollback behavior of the database

#

do_test trans-5.1 {

  execsql {SELECT name FROM sqlite_master WHERE type='table' ORDER BY name}

} {}

do_test trans-5.2 {

  execsql {BEGIN TRANSACTION}

  execsql {SELECT name FROM sqlite_master WHERE type='table' ORDER BY name}

} {}

do_test trans-5.3 {

  execsql {CREATE TABLE one(a text, b int)}

  execsql {SELECT name FROM sqlite_master WHERE type='table' ORDER BY name}

} {one}

do_test trans-5.4 {

  execsql {SELECT a,b FROM one ORDER BY b}

} {}

do_test trans-5.5 {

  execsql {INSERT INTO one(a,b) VALUES('hello', 1)}

  execsql {SELECT a,b FROM one ORDER BY b}

} {hello 1}

do_test trans-5.6 {

  execsql {ROLLBACK}

  execsql {SELECT name FROM sqlite_master WHERE type='table' ORDER BY name}

} {}

do_test trans-5.7 {

  set v [catch {

    execsql {SELECT a,b FROM one ORDER BY b}

  } msg]

  lappend v $msg

} {1 {no such table: one}}

# Test commits and rollbacks of table CREATE TABLEs, CREATE INDEXs

# DROP TABLEs and DROP INDEXs

#

do_test trans-5.8 {

  execsql {

    SELECT name fROM sqlite_master 

    WHERE type='table' OR type='index'

    ORDER BY name

  }

} {}

do_test trans-5.9 {

  execsql {

    BEGIN TRANSACTION;

    CREATE TABLE t1(a int, b int, c int);

    SELECT name fROM sqlite_master 

    WHERE type='table' OR type='index'

    ORDER BY name;

  }

} {t1}

do_test trans-5.10 {

  execsql {

    CREATE INDEX i1 ON t1(a);

    SELECT name fROM sqlite_master 

    WHERE type='table' OR type='index'

    ORDER BY name;

  }

} {i1 t1}

do_test trans-5.11 {

  execsql {

    COMMIT;

    SELECT name fROM sqlite_master 

    WHERE type='table' OR type='index'

    ORDER BY name;

  }

} {i1 t1}

do_test trans-5.12 {

  execsql {

    BEGIN TRANSACTION;

    CREATE TABLE t2(a int, b int, c int);

    CREATE INDEX i2a ON t2(a);

    CREATE INDEX i2b ON t2(b);

    DROP TABLE t1;

    SELECT name fROM sqlite_master 

    WHERE type='table' OR type='index'

    ORDER BY name;

  }

} {i2a i2b t2}

do_test trans-5.13 {

  execsql {

    ROLLBACK;

    SELECT name fROM sqlite_master 

    WHERE type='table' OR type='index'

    ORDER BY name;

  }

} {i1 t1}

do_test trans-5.14 {

  execsql {

    BEGIN TRANSACTION;

    DROP INDEX i1;

    SELECT name fROM sqlite_master 

    WHERE type='table' OR type='index'

    ORDER BY name;

  }

} {t1}

do_test trans-5.15 {

  execsql {

    ROLLBACK;

    SELECT name fROM sqlite_master 

    WHERE type='table' OR type='index'

    ORDER BY name;

  }

} {i1 t1}

do_test trans-5.16 {

  execsql {

    BEGIN TRANSACTION;

    DROP INDEX i1;

    CREATE TABLE t2(x int, y int, z int);

    CREATE INDEX i2x ON t2(x);

    CREATE INDEX i2y ON t2(y);

    INSERT INTO t2 VALUES(1,2,3);

    SELECT name fROM sqlite_master 

    WHERE type='table' OR type='index'

    ORDER BY name;

  }

} {i2x i2y t1 t2}

do_test trans-5.17 {

  execsql {

    COMMIT;

    SELECT name fROM sqlite_master 

    WHERE type='table' OR type='index'

    ORDER BY name;

  }

} {i2x i2y t1 t2}

do_test trans-5.18 {

  execsql {

    SELECT * FROM t2;

  }

} {1 2 3}

do_test trans-5.19 {

  execsql {

    SELECT x FROM t2 WHERE y=2;

  }

} {1}

do_test trans-5.20 {

  execsql {

    BEGIN TRANSACTION;

    DROP TABLE t1;

    DROP TABLE t2;

    SELECT name fROM sqlite_master 

    WHERE type='table' OR type='index'

    ORDER BY name;

  }

} {}

do_test trans-5.21 {

  set r [catch {execsql {

    SELECT * FROM t2

  }} msg]

  lappend r $msg

} {1 {no such table: t2}}

do_test trans-5.22 {

  execsql {

    ROLLBACK;

    SELECT name fROM sqlite_master 

    WHERE type='table' OR type='index'

    ORDER BY name;

  }

} {i2x i2y t1 t2}

do_test trans-5.23 {

  execsql {

    SELECT * FROM t2;

  }

} {1 2 3}

integrity_check trans-5.23

# Try to DROP and CREATE tables and indices with the same name

# within a transaction.  Make sure ROLLBACK works.

#

do_test trans-6.1 {

  execsql2 {

    INSERT INTO t1 VALUES(1,2,3);

    BEGIN TRANSACTION;

    DROP TABLE t1;

    CREATE TABLE t1(p,q,r);

    ROLLBACK;

    SELECT * FROM t1;

  }

} {a 1 b 2 c 3}

do_test trans-6.2 {

  execsql2 {

    INSERT INTO t1 VALUES(1,2,3);

    BEGIN TRANSACTION;

    DROP TABLE t1;

    CREATE TABLE t1(p,q,r);

    COMMIT;

    SELECT * FROM t1;

  }

} {}

do_test trans-6.3 {

  execsql2 {

    INSERT INTO t1 VALUES(1,2,3);

    SELECT * FROM t1;

  }

} {p 1 q 2 r 3}

do_test trans-6.4 {

  execsql2 {

    BEGIN TRANSACTION;

    DROP TABLE t1;

    CREATE TABLE t1(a,b,c);

    INSERT INTO t1 VALUES(4,5,6);

    SELECT * FROM t1;

    DROP TABLE t1;

  }

} {a 4 b 5 c 6}

do_test trans-6.5 {

  execsql2 {

    ROLLBACK;

    SELECT * FROM t1;

  }

} {p 1 q 2 r 3}

do_test trans-6.6 {

  execsql2 {

    BEGIN TRANSACTION;

    DROP TABLE t1;

    CREATE TABLE t1(a,b,c);

    INSERT INTO t1 VALUES(4,5,6);

    SELECT * FROM t1;

    DROP TABLE t1;

  }

} {a 4 b 5 c 6}

do_test trans-6.7 {

  catchsql {

    COMMIT;

    SELECT * FROM t1;

  }

} {1 {no such table: t1}}

# Repeat on a table with an automatically generated index.

#

do_test trans-6.10 {

  execsql2 {

    CREATE TABLE t1(a unique,b,c);

    INSERT INTO t1 VALUES(1,2,3);

    BEGIN TRANSACTION;

    DROP TABLE t1;

    CREATE TABLE t1(p unique,q,r);

    ROLLBACK;

    SELECT * FROM t1;

  }

} {a 1 b 2 c 3}

do_test trans-6.11 {

  execsql2 {

    BEGIN TRANSACTION;

    DROP TABLE t1;

    CREATE TABLE t1(p unique,q,r);

    COMMIT;

    SELECT * FROM t1;

  }

} {}

do_test trans-6.12 {

  execsql2 {

    INSERT INTO t1 VALUES(1,2,3);

    SELECT * FROM t1;

  }

} {p 1 q 2 r 3}

do_test trans-6.13 {

  execsql2 {

    BEGIN TRANSACTION;

    DROP TABLE t1;

    CREATE TABLE t1(a unique,b,c);

    INSERT INTO t1 VALUES(4,5,6);

    SELECT * FROM t1;

    DROP TABLE t1;

  }

} {a 4 b 5 c 6}

do_test trans-6.14 {

  execsql2 {

    ROLLBACK;

    SELECT * FROM t1;

  }

} {p 1 q 2 r 3}

do_test trans-6.15 {

  execsql2 {

    BEGIN TRANSACTION;

    DROP TABLE t1;

    CREATE TABLE t1(a unique,b,c);

    INSERT INTO t1 VALUES(4,5,6);

    SELECT * FROM t1;

    DROP TABLE t1;

  }

} {a 4 b 5 c 6}

do_test trans-6.16 {

  catchsql {

    COMMIT;

    SELECT * FROM t1;

  }

} {1 {no such table: t1}}

do_test trans-6.20 {

  execsql {

    CREATE TABLE t1(a integer primary key,b,c);

    INSERT INTO t1 VALUES(1,-2,-3);

    INSERT INTO t1 VALUES(4,-5,-6);

    SELECT * FROM t1;

  }

} {1 -2 -3 4 -5 -6}

do_test trans-6.21 {

  execsql {

    CREATE INDEX i1 ON t1(b);

    SELECT * FROM t1 WHERE b<1;

  }

} {4 -5 -6 1 -2 -3}

do_test trans-6.22 {

  execsql {

    BEGIN TRANSACTION;

    DROP INDEX i1;

    SELECT * FROM t1 WHERE b<1;

    ROLLBACK;

  }

} {1 -2 -3 4 -5 -6}

do_test trans-6.23 {

  execsql {

    SELECT * FROM t1 WHERE b<1;

  }

} {4 -5 -6 1 -2 -3}

do_test trans-6.24 {

  execsql {

    BEGIN TRANSACTION;

    DROP TABLE t1;

    ROLLBACK;

    SELECT * FROM t1 WHERE b<1;

  }

} {4 -5 -6 1 -2 -3}

do_test trans-6.25 {

  execsql {

    BEGIN TRANSACTION;

    DROP INDEX i1;

    CREATE INDEX i1 ON t1(c);

    SELECT * FROM t1 WHERE b<1;

  }

} {1 -2 -3 4 -5 -6}

do_test trans-6.26 {

  execsql {

    SELECT * FROM t1 WHERE c<1;

  }

} {4 -5 -6 1 -2 -3}

do_test trans-6.27 {

  execsql {

    ROLLBACK;

    SELECT * FROM t1 WHERE b<1;

  }

} {4 -5 -6 1 -2 -3}

do_test trans-6.28 {

  execsql {

    SELECT * FROM t1 WHERE c<1;

  }

} {1 -2 -3 4 -5 -6}

# The following repeats steps 6.20 through 6.28, but puts a "unique"

# constraint the first field of the table in order to generate an

# automatic index.

#

do_test trans-6.30 {

  execsql {

    BEGIN TRANSACTION;

    DROP TABLE t1;

    CREATE TABLE t1(a int unique,b,c);

    COMMIT;

    INSERT INTO t1 VALUES(1,-2,-3);

    INSERT INTO t1 VALUES(4,-5,-6);

    SELECT * FROM t1 ORDER BY a;

  }

} {1 -2 -3 4 -5 -6}

do_test trans-6.31 {

  execsql {

    CREATE INDEX i1 ON t1(b);

    SELECT * FROM t1 WHERE b<1;

  }

} {4 -5 -6 1 -2 -3}

do_test trans-6.32 {

  execsql {

    BEGIN TRANSACTION;

    DROP INDEX i1;

    SELECT * FROM t1 WHERE b<1;

    ROLLBACK;

  }

} {1 -2 -3 4 -5 -6}

do_test trans-6.33 {

  execsql {

    SELECT * FROM t1 WHERE b<1;

  }

} {4 -5 -6 1 -2 -3}

do_test trans-6.34 {

  execsql {

    BEGIN TRANSACTION;

    DROP TABLE t1;

    ROLLBACK;

    SELECT * FROM t1 WHERE b<1;

  }

} {4 -5 -6 1 -2 -3}

do_test trans-6.35 {

  execsql {

    BEGIN TRANSACTION;

    DROP INDEX i1;

    CREATE INDEX i1 ON t1(c);

    SELECT * FROM t1 WHERE b<1;

  }

} {1 -2 -3 4 -5 -6}

do_test trans-6.36 {

  execsql {

    SELECT * FROM t1 WHERE c<1;

  }

} {4 -5 -6 1 -2 -3}

do_test trans-6.37 {

  execsql {

    DROP INDEX i1;

    SELECT * FROM t1 WHERE c<1;

  }

} {1 -2 -3 4 -5 -6}

do_test trans-6.38 {

  execsql {

    ROLLBACK;

    SELECT * FROM t1 WHERE b<1;

  }

} {4 -5 -6 1 -2 -3}

do_test trans-6.39 {

  execsql {

    SELECT * FROM t1 WHERE c<1;

  }

} {1 -2 -3 4 -5 -6}

integrity_check trans-6.40

# Test to make sure rollback restores the database back to its original

# state.

#

do_test trans-7.1 {

  execsql {BEGIN}

  for {set i 0} {$i<1000} {incr i} {

    set r1 [expr {rand()}]

    set r2 [expr {rand()}]

    set r3 [expr {rand()}]

    execsql "INSERT INTO t2 VALUES($r1,$r2,$r3)"

  }

  execsql {COMMIT}

  set ::checksum [execsql {SELECT md5sum(x,y,z) FROM t2}]

  set ::checksum2 [

    execsql {SELECT md5sum(type,name,tbl_name,rootpage,sql) FROM sqlite_master}

  ]

  execsql {SELECT count(*) FROM t2}

} {1001}

do_test trans-7.2 {

  execsql {SELECT md5sum(x,y,z) FROM t2}

} $checksum

do_test trans-7.2.1 {

  execsql {SELECT md5sum(type,name,tbl_name,rootpage,sql) FROM sqlite_master}

} $checksum2

do_test trans-7.3 {

  execsql {

    BEGIN;

    DELETE FROM t2;

    ROLLBACK;

    SELECT md5sum(x,y,z) FROM t2;

  }

} $checksum

do_test trans-7.4 {

  execsql {

    BEGIN;

    INSERT INTO t2 SELECT * FROM t2;

    ROLLBACK;

    SELECT md5sum(x,y,z) FROM t2;

  }

} $checksum

do_test trans-7.5 {

  execsql {

    BEGIN;

    DELETE FROM t2;

    ROLLBACK;

    SELECT md5sum(x,y,z) FROM t2;

  }

} $checksum

do_test trans-7.6 {

  execsql {

    BEGIN;

    INSERT INTO t2 SELECT * FROM t2;

    ROLLBACK;

    SELECT md5sum(x,y,z) FROM t2;

  }

} $checksum

do_test trans-7.7 {

  execsql {

    BEGIN;

    CREATE TABLE t3 AS SELECT * FROM t2;

    INSERT INTO t2 SELECT * FROM t3;

    ROLLBACK;

    SELECT md5sum(x,y,z) FROM t2;

  }

} $checksum

do_test trans-7.8 {

  execsql {SELECT md5sum(type,name,tbl_name,rootpage,sql) FROM sqlite_master}

} $checksum2

ifcapable tempdb {

  do_test trans-7.9 {

    execsql {

      BEGIN;

      CREATE TEMP TABLE t3 AS SELECT * FROM t2;

      INSERT INTO t2 SELECT * FROM t3;

      ROLLBACK;

      SELECT md5sum(x,y,z) FROM t2;

    }

  } $checksum

}

do_test trans-7.10 {

  execsql {SELECT md5sum(type,name,tbl_name,rootpage,sql) FROM sqlite_master}

} $checksum2

ifcapable tempdb {

  do_test trans-7.11 {

    execsql {

      BEGIN;

      CREATE TEMP TABLE t3 AS SELECT * FROM t2;

      INSERT INTO t2 SELECT * FROM t3;

      DROP INDEX i2x;

      DROP INDEX i2y;

      CREATE INDEX i3a ON t3(x);

      ROLLBACK;

      SELECT md5sum(x,y,z) FROM t2;

    }

  } $checksum

}

do_test trans-7.12 {

  execsql {SELECT md5sum(type,name,tbl_name,rootpage,sql) FROM sqlite_master}

} $checksum2

ifcapable tempdb {

  do_test trans-7.13 {

    execsql {

      BEGIN;

      DROP TABLE t2;

      ROLLBACK;

      SELECT md5sum(x,y,z) FROM t2;

    }

  } $checksum

}

do_test trans-7.14 {

  execsql {SELECT md5sum(type,name,tbl_name,rootpage,sql) FROM sqlite_master}

} $checksum2

integrity_check trans-7.15

# Arrange for another process to begin modifying the database but abort

# and die in the middle of the modification.  Then have this process read

# the database.  This process should detect the journal file and roll it

# back.  Verify that this happens correctly.

#

print_text "TclSqlite3-2" "begin"

set fd [open test.tcl w]

puts $fd {

  sqlite3 db test.db

  db eval {

    PRAGMA default_cache_size=20;

    BEGIN;

    CREATE TABLE t3 AS SELECT * FROM t2;

    DELETE FROM t2;

  }

  sqlite_abort

}

close $fd

print_text "TclSqlite3-2" "end"

do_test trans-8.1 {

  catch {exec [info nameofexec] test.tcl}

  execsql {SELECT md5sum(x,y,z) FROM t2}

} $checksum

do_test trans-8.2 {

  execsql {SELECT md5sum(type,name,tbl_name,rootpage,sql) FROM sqlite_master}

} $checksum2

integrity_check trans-8.3

print_text "TclSqlite3-2" "begin"

set fd [open test.tcl w]

puts $fd {

  sqlite3 db test.db

  db eval {

    PRAGMA journal_mode=persist;

    PRAGMA default_cache_size=20;

    BEGIN;

    CREATE TABLE t3 AS SELECT * FROM t2;

    DELETE FROM t2;

  }

  sqlite_abort

}

close $fd

print_text "TclSqlite3-2" "end"

do_test trans-8.4 {

  catch {exec [info nameofexec] test.tcl}

  execsql {SELECT md5sum(x,y,z) FROM t2}

} $checksum

do_test trans-8.5 {

  execsql {SELECT md5sum(type,name,tbl_name,rootpage,sql) FROM sqlite_master}

} $checksum2

integrity_check trans-8.6

# In the following sequence of tests, compute the MD5 sum of the content

# of a table, make lots of modifications to that table, then do a rollback.

# Verify that after the rollback, the MD5 checksum is unchanged.

#

do_test trans-9.1 {

  execsql {

    PRAGMA default_cache_size=10;

  }

  db close

  sqlite3 db test.db

  execsql {

    BEGIN;

    CREATE TABLE t3(x TEXT);

    INSERT INTO t3 VALUES(randstr(10,400));

    INSERT INTO t3 VALUES(randstr(10,400));

    INSERT INTO t3 SELECT randstr(10,400) FROM t3;

    INSERT INTO t3 SELECT randstr(10,400) FROM t3;

    INSERT INTO t3 SELECT randstr(10,400) FROM t3;

    INSERT INTO t3 SELECT randstr(10,400) FROM t3;

    INSERT INTO t3 SELECT randstr(10,400) FROM t3;

    INSERT INTO t3 SELECT randstr(10,400) FROM t3;

    INSERT INTO t3 SELECT randstr(10,400) FROM t3;

    INSERT INTO t3 SELECT randstr(10,400) FROM t3;

    INSERT INTO t3 SELECT randstr(10,400) FROM t3;

    COMMIT;

    SELECT count(*) FROM t3;

  }

} {1024}

# The following procedure computes a "signature" for table "t3".  If

# T3 changes in any way, the signature should change.  

#

# This is used to test ROLLBACK.  We gather a signature for t3, then

# make lots of changes to t3, then rollback and take another signature.

# The two signatures should be the same.

#

proc signature {} {

  return [db eval {SELECT count(*), md5sum(x) FROM t3}]

}

# Repeat the following group of tests 20 times for quick testing and

# 40 times for full testing.  Each iteration of the test makes table

# t3 a little larger, and thus takes a little longer, so doing 40 tests

# is more than 2.0 times slower than doing 20 tests.  Considerably more.

#

if {[info exists ISQUICK]} {

  set limit 20

} elseif {[info exists SOAKTEST]} {

  set limit 100

} else {

  set limit 40

}

# Do rollbacks.  Make sure the signature does not change.

#

for {set i 2} {$i<=$limit} {incr i} {

  set ::sig [signature]

  set cnt [lindex $::sig 0]

  if {$i%2==0} {

    execsql {PRAGMA fullfsync=ON}

  } else {

    execsql {PRAGMA fullfsync=OFF}

  }

  set sqlite_sync_count 0

  set sqlite_fullsync_count 0

  do_test trans-9.$i.1-$cnt {

     execsql {

       BEGIN;

       DELETE FROM t3 WHERE random()%10!=0;

       INSERT INTO t3 SELECT randstr(10,10)||x FROM t3;

       INSERT INTO t3 SELECT randstr(10,10)||x FROM t3;

       ROLLBACK;

     }

     signature

  } $sig

  do_test trans-9.$i.2-$cnt {

     execsql {

       BEGIN;

       DELETE FROM t3 WHERE random()%10!=0;

       INSERT INTO t3 SELECT randstr(10,10)||x FROM t3;

       DELETE FROM t3 WHERE random()%10!=0;

       INSERT INTO t3 SELECT randstr(10,10)||x FROM t3;

       ROLLBACK;

     }

     signature

  } $sig

  if {$i<$limit} {

    do_test trans-9.$i.3-$cnt {

       execsql {

         INSERT INTO t3 SELECT randstr(10,400) FROM t3 WHERE random()%10==0;

       }

    } {}

    if {$tcl_platform(platform)=="unix"} {

      do_test trans-9.$i.4-$cnt {

         expr {$sqlite_sync_count>0}

      } 1

      ifcapable pager_pragmas {

        do_test trans-9.$i.5-$cnt {

           expr {$sqlite_fullsync_count>0}

        } [expr {$i%2==0}]

      } else {

        do_test trans-9.$i.5-$cnt {

          expr {$sqlite_fullsync_count==0}

        } {1}

      }

    }

  }

  set ::pager_old_format 0

}

finish_test