sqlite/test/savepoint.test

# 2008 December 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.
#
#***********************************************************************
#
# $Id: savepoint.test,v 1.13 2009/07/18 08:30:45 danielk1977 Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl
source $testdir/lock_common.tcl
source $testdir/malloc_common.tcl

#----------------------------------------------------------------------
# The following tests - savepoint-1.* - test that the SAVEPOINT, RELEASE
# and ROLLBACK TO comands are correctly parsed, and that the auto-commit
# flag is correctly set and unset as a result.
#
do_test savepoint-1.1 {
  wal_set_journal_mode
  execsql {
    SAVEPOINT sp1;
    RELEASE sp1;
  }
} {}
do_test savepoint-1.2 {
  execsql {
    SAVEPOINT sp1;
    ROLLBACK TO sp1;
  }
} {}
do_test savepoint-1.3 {
  execsql { SAVEPOINT sp1 }
  db close
} {}
sqlite3 db test.db
do_test savepoint-1.4.1 {
  execsql {
    SAVEPOINT sp1;
    SAVEPOINT sp2;
    RELEASE sp1;
  }
  sqlite3_get_autocommit db
} {1}
do_test savepoint-1.4.2 {
  execsql {
    SAVEPOINT sp1;
    SAVEPOINT sp2;
    RELEASE sp2;
  }
  sqlite3_get_autocommit db
} {0}
do_test savepoint-1.4.3 {
  execsql { RELEASE sp1 }
  sqlite3_get_autocommit db
} {1}
do_test savepoint-1.4.4 {
  execsql {
    SAVEPOINT sp1;
    SAVEPOINT sp2;
    ROLLBACK TO sp1;
  }
  sqlite3_get_autocommit db
} {0}
do_test savepoint-1.4.5 {
  execsql { RELEASE SAVEPOINT sp1 }
  sqlite3_get_autocommit db
} {1}
do_test savepoint-1.4.6 {
  execsql {
    SAVEPOINT sp1;
    SAVEPOINT sp2;
    SAVEPOINT sp3;
    ROLLBACK TO SAVEPOINT sp3;
    ROLLBACK TRANSACTION TO sp2;
    ROLLBACK TRANSACTION TO SAVEPOINT sp1;
  }
  sqlite3_get_autocommit db
} {0}
do_test savepoint-1.4.7 {
  execsql { RELEASE SAVEPOINT SP1 }
  sqlite3_get_autocommit db
} {1}
do_test savepoint-1.5 {
  execsql {
    SAVEPOINT sp1;
    ROLLBACK TO sp1;
  }
} {}
do_test savepoint-1.6 {
  execsql COMMIT
} {}
wal_check_journal_mode savepoint-1.7

#------------------------------------------------------------------------
# These tests - savepoint-2.* - test rollbacks and releases of savepoints
# with a very simple data set.
# 

do_test savepoint-2.1 {
  execsql {
    CREATE TABLE t1(a, b, c);
    BEGIN;
    INSERT INTO t1 VALUES(1, 2, 3);
    SAVEPOINT one;
    UPDATE t1 SET a = 2, b = 3, c = 4;
  }
  execsql { SELECT * FROM t1 }
} {2 3 4}
do_test savepoint-2.2 {
  execsql {
    ROLLBACK TO one;
  }
  execsql { SELECT * FROM t1 }
} {1 2 3}
do_test savepoint-2.3 {
  execsql {
    INSERT INTO t1 VALUES(4, 5, 6);
  }
  execsql { SELECT * FROM t1 }
} {1 2 3 4 5 6}
do_test savepoint-2.4 {
  execsql {
    ROLLBACK TO one;
  }
  execsql { SELECT * FROM t1 }
} {1 2 3}


do_test savepoint-2.5 {
  execsql {
    INSERT INTO t1 VALUES(7, 8, 9);
    SAVEPOINT two;
    INSERT INTO t1 VALUES(10, 11, 12);
  }
  execsql { SELECT * FROM t1 }
} {1 2 3 7 8 9 10 11 12}
do_test savepoint-2.6 {
  execsql {
    ROLLBACK TO two;
  }
  execsql { SELECT * FROM t1 }
} {1 2 3 7 8 9}
do_test savepoint-2.7 {
  execsql {
    INSERT INTO t1 VALUES(10, 11, 12);
  }
  execsql { SELECT * FROM t1 }
} {1 2 3 7 8 9 10 11 12}
do_test savepoint-2.8 {
  execsql {
    ROLLBACK TO one;
  }
  execsql { SELECT * FROM t1 }
} {1 2 3}
do_test savepoint-2.9 {
  execsql {
    INSERT INTO t1 VALUES('a', 'b', 'c');
    SAVEPOINT two;
    INSERT INTO t1 VALUES('d', 'e', 'f');
  }
  execsql { SELECT * FROM t1 }
} {1 2 3 a b c d e f}
do_test savepoint-2.10 {
  execsql {
    RELEASE two;
  }
  execsql { SELECT * FROM t1 }
} {1 2 3 a b c d e f}
do_test savepoint-2.11 {
  execsql {
    ROLLBACK;
  }
  execsql { SELECT * FROM t1 }
} {}
wal_check_journal_mode savepoint-2.12

#------------------------------------------------------------------------
# This block of tests - savepoint-3.* - test that when a transaction
# savepoint is rolled back, locks are not released from database files.
# And that when a transaction savepoint is released, they are released.
#
# These tests do not work in WAL mode. WAL mode does not take RESERVED
# locks on the database file.
# 
if {[wal_is_wal_mode]==0} {
  do_test savepoint-3.1 {
    execsql { SAVEPOINT "transaction" }
    execsql { PRAGMA lock_status }
  } {main unlocked temp closed}
  
  do_test savepoint-3.2 {
    execsql { INSERT INTO t1 VALUES(1, 2, 3) }
    execsql { PRAGMA lock_status }
  } {main reserved temp closed}
  
  do_test savepoint-3.3 {
    execsql { ROLLBACK TO "transaction" }
    execsql { PRAGMA lock_status }
  } {main reserved temp closed}
  
  do_test savepoint-3.4 {
    execsql { INSERT INTO t1 VALUES(1, 2, 3) }
    execsql { PRAGMA lock_status }
  } {main reserved temp closed}
  
  do_test savepoint-3.5 {
    execsql { RELEASE "transaction" }
    execsql { PRAGMA lock_status }
  } {main unlocked temp closed}
}

#------------------------------------------------------------------------
# Test that savepoints that include schema modifications are handled
# correctly. Test cases savepoint-4.*.
# 
do_test savepoint-4.1 {
  execsql {
    CREATE TABLE t2(d, e, f);
    SELECT sql FROM sqlite_master;
  }
} {{CREATE TABLE t1(a, b, c)} {CREATE TABLE t2(d, e, f)}}
do_test savepoint-4.2 {
  execsql {
    BEGIN;
    CREATE TABLE t3(g,h);
    INSERT INTO t3 VALUES('I', 'II');
    SAVEPOINT one;
    DROP TABLE t3;
  }
} {}
do_test savepoint-4.3 {
  execsql {
    CREATE TABLE t3(g, h, i);
    INSERT INTO t3 VALUES('III', 'IV', 'V');
  }
  execsql {SELECT * FROM t3}
} {III IV V}
do_test savepoint-4.4 {
  execsql { ROLLBACK TO one; }
  execsql {SELECT * FROM t3}
} {I II}
do_test savepoint-4.5 {
  execsql {
    ROLLBACK;
    SELECT sql FROM sqlite_master;
  }
} {{CREATE TABLE t1(a, b, c)} {CREATE TABLE t2(d, e, f)}}

do_test savepoint-4.6 {
  execsql {
    BEGIN;
    INSERT INTO t1 VALUES('o', 't', 't');
    SAVEPOINT sp1;
    CREATE TABLE t3(a, b, c);
    INSERT INTO t3 VALUES('z', 'y', 'x');
  }
  execsql {SELECT * FROM t3}
} {z y x}
do_test savepoint-4.7 {
  execsql {
    ROLLBACK TO sp1;
    CREATE TABLE t3(a);
    INSERT INTO t3 VALUES('value');
  }
  execsql {SELECT * FROM t3}
} {value}
do_test savepoint-4.8 {
  execsql COMMIT
} {}
wal_check_journal_mode savepoint-4.9

#------------------------------------------------------------------------
# Test some logic errors to do with the savepoint feature.
# 

ifcapable incrblob {
  do_test savepoint-5.1.1 {
    execsql {
      CREATE TABLE blobs(x);
      INSERT INTO blobs VALUES('a twentyeight character blob');
    }
    set fd [db incrblob blobs x 1]
    puts -nonewline $fd "hello"
    catchsql {SAVEPOINT abc}
  } {1 {cannot open savepoint - SQL statements in progress}}
  do_test savepoint-5.1.2 {
    close $fd
    catchsql {SAVEPOINT abc}
  } {0 {}}
  
  do_test savepoint-5.2 {
    execsql  {RELEASE abc}
    catchsql {RELEASE abc}
  } {1 {no such savepoint: abc}}
  
  do_test savepoint-5.3.1 {
    execsql  {SAVEPOINT abc}
    catchsql {ROLLBACK TO def}
  } {1 {no such savepoint: def}}
  do_test savepoint-5.3.2.1 {
    execsql  {SAVEPOINT def}
    set fd [db incrblob -readonly blobs x 1]
    set rc [catch {seek $fd 0;read $fd} res]
    lappend rc $res
  } {0 {hellontyeight character blob}}
  do_test savepoint-5.3.2.2 {
    catchsql {ROLLBACK TO def}
  } {0 {}}
  do_test savepoint-5.3.2.3 {
    set rc [catch {seek $fd 0; read $fd} res]
    set rc
  } {1}
  do_test savepoint-5.3.3 {
    catchsql  {RELEASE def}
  } {0 {}}
  do_test savepoint-5.3.4 {
    close $fd
    execsql  {savepoint def}
    set fd [db incrblob blobs x 1]
    catchsql {release def}
  } {1 {cannot release savepoint - SQL statements in progress}}
  do_test savepoint-5.3.5 {
    close $fd
    execsql {release abc}
  } {}
  
  # Rollback mode:
  #
  #   Open a savepoint transaction and insert a row into the database. Then,
  #   using a second database handle, open a read-only transaction on the
  #   database file. Check that the savepoint transaction cannot be committed
  #   until after the read-only transaction has been closed.
  #
  # WAL mode:
  # 
  #   As above, except that the savepoint transaction can be successfully
  #   committed before the read-only transaction has been closed.
  #
  do_test savepoint-5.4.1 {
    execsql {
      SAVEPOINT main;
      INSERT INTO blobs VALUES('another blob');
    }
  } {}
  do_test savepoint-5.4.2 {
    sqlite3 db2 test.db
    execsql { BEGIN ; SELECT count(*) FROM blobs } db2
  } {1}
  if {[wal_is_wal_mode]} {
    do_test savepoint-5.4.3 { catchsql "RELEASE main" } {0 {}}
    do_test savepoint-5.4.4 { db2 close               } {}
  } else {
    do_test savepoint-5.4.3 {
      catchsql { RELEASE main }
    } {1 {database is locked}}
    do_test savepoint-5.4.4 {
      db2 close
      catchsql { RELEASE main }
    } {0 {}}
  }
  do_test savepoint-5.4.5 {
    execsql { SELECT x FROM blobs WHERE rowid = 2 }
  } {{another blob}}
  do_test savepoint-5.4.6 {
    execsql { SELECT count(*) FROM blobs }
  } {2}
}
wal_check_journal_mode savepoint-5.5

#-------------------------------------------------------------------------
# The following tests, savepoint-6.*, test an incr-vacuum inside of a
# couple of nested savepoints.
#
ifcapable {autovacuum && pragma} {
  db close
  forcedelete test.db
  sqlite3 db test.db

  do_test savepoint-6.1 {
    execsql { PRAGMA auto_vacuum = incremental }
    wal_set_journal_mode
    execsql {
      CREATE TABLE t1(a, b, c);
      CREATE INDEX i1 ON t1(a, b);
      BEGIN;
      INSERT INTO t1 VALUES(randstr(10,400),randstr(10,400),randstr(10,400));
    }
    set r "randstr(10,400)"
    for {set ii 0} {$ii < 10} {incr ii} {
      execsql "INSERT INTO t1 SELECT $r, $r, $r FROM t1"
    }
    execsql { COMMIT }
  } {}

  integrity_check savepoint-6.2

  do_test savepoint-6.3 {
    execsql {
      PRAGMA cache_size = 10;
      BEGIN;
        UPDATE t1 SET a = randstr(10,10) WHERE (rowid%4)==0;
        SAVEPOINT one;
          DELETE FROM t1 WHERE rowid%2;
          PRAGMA incr_vacuum;
          SAVEPOINT two;
            INSERT INTO t1 SELECT randstr(10,400), randstr(10,400), c FROM t1;
            DELETE FROM t1 WHERE rowid%2;
            PRAGMA incr_vacuum;
        ROLLBACK TO one;
      COMMIT;
    }
  } {}

  integrity_check savepoint-6.4

  wal_check_journal_mode savepoint-6.5
}

#-------------------------------------------------------------------------
# The following tests, savepoint-7.*, attempt to break the logic 
# surrounding savepoints by growing and shrinking the database file.
#
db close
forcedelete test.db
sqlite3 db test.db

do_test savepoint-7.1 {
  execsql { PRAGMA auto_vacuum = incremental }
  wal_set_journal_mode
  execsql {
    PRAGMA cache_size = 10;
    BEGIN;
    CREATE TABLE t1(a PRIMARY KEY, b);
      INSERT INTO t1(a) VALUES('alligator');
      INSERT INTO t1(a) VALUES('angelfish');
      INSERT INTO t1(a) VALUES('ant');
      INSERT INTO t1(a) VALUES('antelope');
      INSERT INTO t1(a) VALUES('ape');
      INSERT INTO t1(a) VALUES('baboon');
      INSERT INTO t1(a) VALUES('badger');
      INSERT INTO t1(a) VALUES('bear');
      INSERT INTO t1(a) VALUES('beetle');
      INSERT INTO t1(a) VALUES('bird');
      INSERT INTO t1(a) VALUES('bison');
      UPDATE t1 SET b =    randstr(1000,1000);
      UPDATE t1 SET b = b||randstr(1000,1000);
      UPDATE t1 SET b = b||randstr(1000,1000);
      UPDATE t1 SET b = b||randstr(10,1000);
    COMMIT;
  }
  expr ([execsql { PRAGMA page_count }] > 20)
} {1}
do_test savepoint-7.2.1 {
  execsql {
    BEGIN;
      SAVEPOINT one;
      CREATE TABLE t2(a, b);
      INSERT INTO t2 SELECT a, b FROM t1;
      ROLLBACK TO one;
  }
  execsql {
    PRAGMA integrity_check;
  }
} {ok}
do_test savepoint-7.2.2 {
  execsql {
    COMMIT;
    PRAGMA integrity_check;
  }
} {ok}

do_test savepoint-7.3.1 {
  execsql {
    CREATE TABLE t2(a, b);
    INSERT INTO t2 SELECT a, b FROM t1;
  }
} {}
do_test savepoint-7.3.2 {
  execsql {
    BEGIN;
      SAVEPOINT one;
        DELETE FROM t2;
        PRAGMA incremental_vacuum;
        SAVEPOINT two;
          INSERT INTO t2 SELECT a, b FROM t1;
        ROLLBACK TO two;
    COMMIT;
  }
  execsql { PRAGMA integrity_check }
} {ok}
wal_check_journal_mode savepoint-7.3.3

do_test savepoint-7.4.1 {
  db close
  forcedelete test.db
  sqlite3 db test.db
  execsql { PRAGMA auto_vacuum = incremental }
  wal_set_journal_mode
  execsql {
    CREATE TABLE t1(a, b, PRIMARY KEY(a, b));
    INSERT INTO t1 VALUES(randstr(1000,1000), randstr(1000,1000));
    BEGIN;
      DELETE FROM t1;
      SAVEPOINT one;
      PRAGMA incremental_vacuum;
      ROLLBACK TO one;
    COMMIT;
  }

  execsql { PRAGMA integrity_check }
} {ok}

do_test savepoint-7.5.1 {
  execsql {
    PRAGMA incremental_vacuum;
    CREATE TABLE t5(x, y);
    INSERT INTO t5 VALUES(1, randstr(1000,1000));
    INSERT INTO t5 VALUES(2, randstr(1000,1000));
    INSERT INTO t5 VALUES(3, randstr(1000,1000));

    BEGIN;
      INSERT INTO t5 VALUES(4, randstr(1000,1000));
      INSERT INTO t5 VALUES(5, randstr(1000,1000));
      DELETE FROM t5 WHERE x=1 OR x=2;
      SAVEPOINT one;
        PRAGMA incremental_vacuum;
        SAVEPOINT two;
          INSERT INTO t5 VALUES(1, randstr(1000,1000));
          INSERT INTO t5 VALUES(2, randstr(1000,1000));
        ROLLBACK TO two;
      ROLLBACK TO one;
    COMMIT;
    PRAGMA integrity_check;
  }
} {ok}
do_test savepoint-7.5.2 {
  execsql {
    DROP TABLE t5;
  }
} {}
wal_check_journal_mode savepoint-7.5.3

# Test oddly named and quoted savepoints.
#
do_test savepoint-8-1 {
  execsql { SAVEPOINT "save1" }
  execsql { RELEASE save1 }
} {}
do_test savepoint-8-2 {
  execsql { SAVEPOINT "Including whitespace " }
  execsql { RELEASE "including Whitespace " }
} {}

# Test that the authorization callback works.
#
ifcapable auth {
  proc auth {args} {
    eval lappend ::authdata $args
    return SQLITE_OK
  }
  db auth auth

  do_test savepoint-9.1 {
    set ::authdata [list]
    execsql { SAVEPOINT sp1 }
    set ::authdata
  } {SQLITE_SAVEPOINT BEGIN sp1 {} {}}
  do_test savepoint-9.2 {
    set ::authdata [list]
    execsql { ROLLBACK TO sp1 }
    set ::authdata
  } {SQLITE_SAVEPOINT ROLLBACK sp1 {} {}}
  do_test savepoint-9.3 {
    set ::authdata [list]
    execsql { RELEASE sp1 }
    set ::authdata
  } {SQLITE_SAVEPOINT RELEASE sp1 {} {}}

  proc auth {args} {
    eval lappend ::authdata $args
    return SQLITE_DENY
  }
  db auth auth

  do_test savepoint-9.4 {
    set ::authdata [list]
    set res [catchsql { SAVEPOINT sp1 }]
    concat $::authdata $res
  } {SQLITE_SAVEPOINT BEGIN sp1 {} {} 1 {not authorized}}
  do_test savepoint-9.5 {
    set ::authdata [list]
    set res [catchsql { ROLLBACK TO sp1 }]
    concat $::authdata $res
  } {SQLITE_SAVEPOINT ROLLBACK sp1 {} {} 1 {not authorized}}
  do_test savepoint-9.6 {
    set ::authdata [list]
    set res [catchsql { RELEASE sp1 }]
    concat $::authdata $res
  } {SQLITE_SAVEPOINT RELEASE sp1 {} {} 1 {not authorized}}

  catch { db eval ROLLBACK }
  db auth ""
}

#-------------------------------------------------------------------------
# The following tests - savepoint-10.* - test the interaction of 
# savepoints and ATTACH statements.
# 

# First make sure it is not possible to attach or detach a database while
# a savepoint is open (it is not possible if any transaction is open).
#
do_test savepoint-10.1.1 {
  catchsql {
    SAVEPOINT one;
    ATTACH 'test2.db' AS aux;
  }
} {1 {cannot ATTACH database within transaction}}
do_test savepoint-10.1.2 {
  execsql {
    RELEASE one;
    ATTACH 'test2.db' AS aux;
  }
  catchsql {
    SAVEPOINT one;
    DETACH aux;
  }
} {1 {cannot DETACH database within transaction}}
do_test savepoint-10.1.3 {
  execsql {
    RELEASE one;
    DETACH aux;
  }
} {}

# The lock state of the TEMP database can vary if SQLITE_TEMP_STORE=3
# And the following set of tests is only really interested in the status
# of the aux1 and aux2 locks.  So record the current lock status of
# TEMP for use in the answers.
set templockstate [lindex [db eval {PRAGMA lock_status}] 3]


if {[wal_is_wal_mode]==0} {
  do_test savepoint-10.2.1 {
    forcedelete test3.db
    forcedelete test2.db
    execsql {
      ATTACH 'test2.db' AS aux1;
      ATTACH 'test3.db' AS aux2;
      DROP TABLE t1;
      CREATE TABLE main.t1(x, y);
      CREATE TABLE aux1.t2(x, y);
      CREATE TABLE aux2.t3(x, y);
      SELECT name FROM sqlite_master;
      SELECT name FROM aux1.sqlite_master;
      SELECT name FROM aux2.sqlite_master;
    }
  } {t1 t2 t3}
  do_test savepoint-10.2.2 {
    execsql { PRAGMA lock_status }
  } [list main unlocked temp $templockstate aux1 unlocked aux2 unlocked]
  
  do_test savepoint-10.2.3 {
    execsql {
      SAVEPOINT one;
      INSERT INTO t1 VALUES(1, 2);
      PRAGMA lock_status;
    }
  } [list main reserved temp $templockstate aux1 unlocked aux2 unlocked]
  do_test savepoint-10.2.4 {
    execsql {
      INSERT INTO t3 VALUES(3, 4);
      PRAGMA lock_status;
    }
  } [list main reserved temp $templockstate aux1 unlocked aux2 reserved]
  do_test savepoint-10.2.5 {
    execsql {
      SAVEPOINT two;
      INSERT INTO t2 VALUES(5, 6);
      PRAGMA lock_status;
    }
  } [list main reserved temp $templockstate aux1 reserved aux2 reserved]
  do_test savepoint-10.2.6 {
    execsql { SELECT * FROM t2 }
  } {5 6}
  do_test savepoint-10.2.7 {
    execsql { ROLLBACK TO two }
    execsql { SELECT * FROM t2 }
  } {}
  do_test savepoint-10.2.8 {
    execsql { PRAGMA lock_status }
  } [list main reserved temp $templockstate aux1 reserved aux2 reserved]
  do_test savepoint-10.2.9 {
    execsql { SELECT 'a', * FROM t1 ; SELECT 'b', * FROM t3 }
  } {a 1 2 b 3 4}
  do_test savepoint-10.2.9 {
    execsql {
      INSERT INTO t2 VALUES(5, 6);
      RELEASE one;
    }
    execsql { 
      SELECT * FROM t1;
      SELECT * FROM t2;
      SELECT * FROM t3;
    }
  } {1 2 5 6 3 4}
  do_test savepoint-10.2.9 {
    execsql { PRAGMA lock_status }
  } [list main unlocked temp $templockstate aux1 unlocked aux2 unlocked]
  
  do_test savepoint-10.2.10 {
    execsql { 
      SAVEPOINT one;
        INSERT INTO t1 VALUES('a', 'b');
        SAVEPOINT two;
          INSERT INTO t2 VALUES('c', 'd');
          SAVEPOINT three;
            INSERT INTO t3 VALUES('e', 'f');
    }
    execsql { 
      SELECT * FROM t1;
      SELECT * FROM t2;
      SELECT * FROM t3;
    }
  } {1 2 a b 5 6 c d 3 4 e f}
  do_test savepoint-10.2.11 {
    execsql { ROLLBACK TO two }
    execsql { 
      SELECT * FROM t1;
      SELECT * FROM t2;
      SELECT * FROM t3;
    }
  } {1 2 a b 5 6 3 4}
  do_test savepoint-10.2.12 {
    execsql { 
      INSERT INTO t3 VALUES('g', 'h');
      ROLLBACK TO two;
    }
    execsql { 
      SELECT * FROM t1;
      SELECT * FROM t2;
      SELECT * FROM t3;
    }
  } {1 2 a b 5 6 3 4}
  do_test savepoint-10.2.13 {
    execsql { ROLLBACK }
    execsql { 
      SELECT * FROM t1;
      SELECT * FROM t2;
      SELECT * FROM t3;
    }
  } {1 2 5 6 3 4}
  do_test savepoint-10.2.14 {
    execsql { PRAGMA lock_status }
  } [list main unlocked temp $templockstate aux1 unlocked aux2 unlocked]
}

#-------------------------------------------------------------------------
# The following tests - savepoint-11.* - test the interaction of 
# savepoints and creating or dropping tables and indexes in 
# auto-vacuum mode.
# 
do_test savepoint-11.1 {
  db close
  forcedelete test.db
  sqlite3 db test.db
  execsql { PRAGMA auto_vacuum = full; }
  wal_set_journal_mode
  execsql {
    CREATE TABLE t1(a, b, UNIQUE(a, b));
    INSERT INTO t1 VALUES(1, randstr(1000,1000));
    INSERT INTO t1 VALUES(2, randstr(1000,1000));
  }
} {}
do_test savepoint-11.2 {
  execsql {
    SAVEPOINT one;
      CREATE TABLE t2(a, b, UNIQUE(a, b));
      SAVEPOINT two;
        CREATE TABLE t3(a, b, UNIQUE(a, b));
  }
} {}
integrity_check savepoint-11.3
do_test savepoint-11.4 {
  execsql { ROLLBACK TO two }
} {}
integrity_check savepoint-11.5
do_test savepoint-11.6 {
  execsql { 
    CREATE TABLE t3(a, b, UNIQUE(a, b));
    ROLLBACK TO one;
  }
} {}
integrity_check savepoint-11.7
do_test savepoint-11.8 {
  execsql { ROLLBACK }
  execsql { PRAGMA wal_checkpoint }
  file size test.db
} {8192}

do_test savepoint-11.9 {
  execsql {
    DROP TABLE IF EXISTS t1;
    DROP TABLE IF EXISTS t2;
    DROP TABLE IF EXISTS t3;
  }
} {}
do_test savepoint-11.10 {
  execsql {
    BEGIN;
      CREATE TABLE t1(a, b);
      CREATE TABLE t2(x, y);
      INSERT INTO t2 VALUES(1, 2);
      SAVEPOINT one;
        INSERT INTO t2 VALUES(3, 4);
        SAVEPOINT two;
          DROP TABLE t1;
        ROLLBACK TO two;
  }
  execsql {SELECT * FROM t2}
} {1 2 3 4}
do_test savepoint-11.11 {
  execsql COMMIT
} {}
do_test savepoint-11.12 {
  execsql {SELECT * FROM t2}
} {1 2 3 4}
wal_check_journal_mode savepoint-11.13

#-------------------------------------------------------------------------
# The following tests - savepoint-12.* - test the interaction of 
# savepoints and "ON CONFLICT ROLLBACK" clauses.
# 
do_test savepoint-12.1 {
  execsql {
    CREATE TABLE t4(a PRIMARY KEY, b);
    INSERT INTO t4 VALUES(1, 'one');
  }
} {}
do_test savepoint-12.2 {
  # The final statement of the following SQL hits a constraint when the
  # conflict handling mode is "OR ROLLBACK" and there are a couple of
  # open savepoints. At one point this would fail to clear the internal
  # record of the open savepoints, resulting in an assert() failure 
  # later on.
  # 
  catchsql {
    BEGIN;
      INSERT INTO t4 VALUES(2, 'two');
      SAVEPOINT sp1;
        INSERT INTO t4 VALUES(3, 'three');
        SAVEPOINT sp2;
          INSERT OR ROLLBACK INTO t4 VALUES(1, 'one');
  }
} {1 {column a is not unique}}
do_test savepoint-12.3 {
  sqlite3_get_autocommit db
} {1}
do_test savepoint-12.4 {
  execsql { SAVEPOINT one }
} {}
wal_check_journal_mode savepoint-12.5

#-------------------------------------------------------------------------
# The following tests - savepoint-13.* - test the interaction of 
# savepoints and "journal_mode = off".
# 
if {[wal_is_wal_mode]==0} {
  do_test savepoint-13.1 {
    db close
    catch {forcedelete test.db}
    sqlite3 db test.db
    execsql {
      BEGIN;
        CREATE TABLE t1(a PRIMARY KEY, b);
        INSERT INTO t1 VALUES(1, 2);
      COMMIT;
      PRAGMA journal_mode = off;
    }
  } {off}
  do_test savepoint-13.2 {
    execsql {
      BEGIN;
      INSERT INTO t1 VALUES(3, 4);
      INSERT INTO t1 SELECT a+4,b+4  FROM t1;
      COMMIT;
    }
  } {}
  do_test savepoint-13.3 {
    execsql {
      BEGIN;
        INSERT INTO t1 VALUES(9, 10);
        SAVEPOINT s1;
          INSERT INTO t1 VALUES(11, 12);
      COMMIT;
    }
  } {}
  do_test savepoint-13.4 {
    execsql {
      BEGIN;
        INSERT INTO t1 VALUES(13, 14);
        SAVEPOINT s1;
          INSERT INTO t1 VALUES(15, 16);
        ROLLBACK TO s1;
      ROLLBACK;
      SELECT * FROM t1;
    }
  } {1 2 3 4 5 6 7 8 9 10 11 12}
}

db close
delete_file test.db
do_multiclient_test tn {
  do_test savepoint-14.$tn.1 {
    sql1 {
      CREATE TABLE foo(x);
      INSERT INTO foo VALUES(1);
      INSERT INTO foo VALUES(2);
    }
    sql2 {
      BEGIN;
        SELECT * FROM foo;
    }
  } {1 2}
  do_test savepoint-14.$tn.2 {
    sql1 {
      SAVEPOINT one;
      INSERT INTO foo VALUES(1);
    }
    csql1 { RELEASE one }
  } {1 {database is locked}}
  do_test savepoint-14.$tn.3 {
    sql1 { ROLLBACK TO one }
    sql2 { COMMIT }
    sql1 { RELEASE one }
  } {}

  do_test savepoint-14.$tn.4 {
    sql2 {
      BEGIN;
        SELECT * FROM foo;
    }
  } {1 2}
  do_test savepoint-14.$tn.5 {
    sql1 {
      SAVEPOINT one;
      INSERT INTO foo VALUES(1);
    }
    csql1 { RELEASE one }
  } {1 {database is locked}}
  do_test savepoint-14.$tn.6 {
    sql2 { COMMIT }
    sql1 {
      ROLLBACK TO one;
      INSERT INTO foo VALUES(3);
      INSERT INTO foo VALUES(4);
      INSERT INTO foo VALUES(5);
      RELEASE one;
    }
  } {}
  do_test savepoint-14.$tn.7 {
    sql2 { CREATE INDEX fooidx ON foo(x); }
    sql3 { PRAGMA integrity_check }
  } {ok}
}

do_multiclient_test tn {
  do_test savepoint-15.$tn.1 {
    sql1 {
      CREATE TABLE foo(x);
      INSERT INTO foo VALUES(1);
      INSERT INTO foo VALUES(2);
    }
    sql2 { BEGIN; SELECT * FROM foo; }
  } {1 2}
  do_test savepoint-15.$tn.2 {
    sql1 {
      PRAGMA locking_mode = EXCLUSIVE;
      BEGIN;
        INSERT INTO foo VALUES(3);
    }
    csql1 { COMMIT }
  } {1 {database is locked}}
  do_test savepoint-15.$tn.3 {
    sql1 { ROLLBACK }
    sql2 { COMMIT }
    sql1 {
      INSERT INTO foo VALUES(3);
      PRAGMA locking_mode = NORMAL;
      INSERT INTO foo VALUES(4);
    }
    sql2 { CREATE INDEX fooidx ON foo(x); }
    sql3 { PRAGMA integrity_check }
  } {ok}
}

do_multiclient_test tn {
  do_test savepoint-16.$tn.1 {
    sql1 {
      CREATE TABLE foo(x);
      INSERT INTO foo VALUES(1);
      INSERT INTO foo VALUES(2);
    }
  } {}
  do_test savepoint-16.$tn.2 {

    db eval {SELECT * FROM foo} {
      sql1 { INSERT INTO foo VALUES(3) }
      sql2 { SELECT * FROM foo }
      sql1 { INSERT INTO foo VALUES(4) }
      break
    }

    sql2 { CREATE INDEX fooidx ON foo(x); }
    sql3 { PRAGMA integrity_check }
  } {ok}
  do_test savepoint-16.$tn.3 {
    sql1 { SELECT * FROM foo }
  } {1 2 3 4}
}

#-------------------------------------------------------------------------
# This next block of tests verifies that a problem reported on the mailing
# list has been resolved. At one point the second "CREATE TABLE t6" would
# fail as table t6 still existed in the internal cache of the db schema
# (even though it had been removed from the database by the ROLLBACK 
# command).
#
sqlite3 db test.db
do_execsql_test savepoint-17.1 {
  BEGIN;
    CREATE TABLE t6(a, b);
    INSERT INTO t6 VALUES(1, 2);
    SAVEPOINT one;
      INSERT INTO t6 VALUES(3, 4);
    ROLLBACK TO one;
    SELECT * FROM t6;
  ROLLBACK;
} {1 2}

do_execsql_test savepoint-17.2 {
  CREATE TABLE t6(a, b);
} {}

finish_test