# 2005 February 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 file is testing the VACUUM statement.

 #

 # $Id: vacuum2.test,v 1.8 2008/08/23 16:17:56 danielk1977 Exp $

 set testdir [file dirname $argv0]

 source $testdir/tester.tcl

 # If the VACUUM statement is disabled in the current build, skip all

 # the tests in this file.

 #

 ifcapable {!vacuum||!autoinc} {

   finish_test

   return

 }

 if $AUTOVACUUM {

   finish_test

   return

 }

 # Ticket #1121 - make sure vacuum works if all autoincrement tables

 # have been deleted.

 #

 do_test vacuum2-1.1 {

   execsql {

     CREATE TABLE t1(x INTEGER PRIMARY KEY AUTOINCREMENT, y);

     DROP TABLE t1;

     VACUUM;

   }

 } {}

 # Ticket #2518.  Make sure vacuum increments the change counter

 # in the database header.

 #

 do_test vacuum2-2.1 {

   execsql {

     CREATE TABLE t1(x);

     CREATE TABLE t2(y);

     INSERT INTO t1 VALUES(1);

   }

   hexio_get_int [hexio_read test.db 24 4]

 } [expr {[hexio_get_int [hexio_read test.db 24 4]]+3}]

 do_test vacuum2-2.1 {

   execsql {

     VACUUM

   }

   hexio_get_int [hexio_read test.db 24 4]

 } [expr {[hexio_get_int [hexio_read test.db 24 4]]+1}]

 ############################################################################

 # Verify that we can use the auto_vacuum pragma to request a new

 # autovacuum setting, do a VACUUM, and the new setting takes effect.

 # Make sure this happens correctly even if there are multiple open

 # connections to the same database file.

 #

 sqlite3 db2 test.db

 set pageSize [db eval {pragma page_size}]

 # We are currently not autovacuuming so the database should be 3 pages

 # in size.  1 page for each of sqlite_master, t1, and t2.

 #

 do_test vacuum2-3.1 {

   execsql {

     INSERT INTO t1 VALUES('hello');

     INSERT INTO t2 VALUES('out there');

   }

   expr {[file size test.db]/$pageSize}

 } {3}

 set cksum [cksum]

 do_test vacuum2-3.2 {

   cksum db2

 } $cksum

 # Convert the database to an autovacuumed database.

 do_test vacuum2-3.3 {

   execsql {

     PRAGMA auto_vacuum=FULL;

     VACUUM;

   }

   expr {[file size test.db]/$pageSize}

 } {4}

 do_test vacuum2-3.4 {

   cksum db2

 } $cksum

 do_test vacuum2-3.5 {

   cksum

 } $cksum

 do_test vacuum2-3.6 {

   execsql {PRAGMA integrity_check} db2

 } {ok}

 do_test vacuum2-3.7 {

   execsql {PRAGMA integrity_check} db

 } {ok}

 # Convert the database back to a non-autovacuumed database.

 do_test vacuum2-3.13 {

   execsql {

     PRAGMA auto_vacuum=NONE;

     VACUUM;

   }

   expr {[file size test.db]/$pageSize}

 } {3}

 do_test vacuum2-3.14 {

   cksum db2

 } $cksum

 do_test vacuum2-3.15 {

   cksum

 } $cksum

 do_test vacuum2-3.16 {

   execsql {PRAGMA integrity_check} db2

 } {ok}

 do_test vacuum2-3.17 {

   execsql {PRAGMA integrity_check} db

 } {ok}

 db2 close

 ifcapable autovacuum {

   do_test vacuum2-4.1 {

     db close

     file delete -force test.db

     sqlite3 db test.db

     execsql {

       pragma auto_vacuum=1;

       create table t(a, b);

       insert into t values(1, 2);

       insert into t values(1, 2);

       pragma auto_vacuum=0;

       vacuum;

       pragma auto_vacuum;

     }

   } {0}

   do_test vacuum2-4.2 {

     execsql {

       pragma auto_vacuum=1;

       vacuum;

       pragma auto_vacuum;

     }

   } {1}

   do_test vacuum2-4.3 {

     execsql {

       pragma integrity_check

     }

   } {ok}

   do_test vacuum2-4.4 {

     execsql {

       pragma auto_vacuum;

     }

   } {1}

 }

 finish_test