# 2007 May 04

#

# 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 incremental vacuum feature.

#

# $Id: incrvacuum2.test,v 1.5 2008/05/07 07:13:16 danielk1977 Exp $

set testdir [file dirname $argv0]

source $testdir/tester.tcl

# If this build of the library does not support auto-vacuum, omit this

# whole file.

ifcapable {!autovacuum || !pragma} {

  finish_test

  return

}

# If the OMIT_INCRBLOB symbol was defined at compile time, there

# is no zeroblob() function available. So create a similar

# function here using Tcl. It doesn't return a blob, but it returns

# data of the required length, which is good enough for this

# test file.

ifcapable !incrblob {

  proc zeroblob {n} { string repeat 0 $n }

  db function zeroblob zeroblob

}

# Create a database in incremental vacuum mode that has many

# pages on the freelist.

#

do_test incrvacuum2-1.1 {

  execsql {

    PRAGMA page_size=1024;

    PRAGMA auto_vacuum=incremental;

    CREATE TABLE t1(x);

    INSERT INTO t1 VALUES(zeroblob(30000));

    DELETE FROM t1;

  }

  file size test.db

} {32768}

# Vacuum off a single page.

#

do_test incrvacuum2-1.2 {

  execsql {

    PRAGMA incremental_vacuum(1);

  }

  file size test.db

} {31744}

# Vacuum off five pages

#

do_test incrvacuum2-1.3 {

  execsql {

    PRAGMA incremental_vacuum(5);

  }

  file size test.db

} {26624}

# Vacuum off all the rest

#

do_test incrvacuum2-1.4 {

  execsql {

    PRAGMA incremental_vacuum(1000);

  }

  file size test.db

} {3072}

# Make sure incremental vacuum works on attached databases.

#

ifcapable attach {

  do_test incrvacuum2-2.1 {

    file delete -force test2.db test2.db-journal

    execsql {

      ATTACH DATABASE 'test2.db' AS aux;

      PRAGMA aux.auto_vacuum=incremental;

      CREATE TABLE aux.t2(x);

      INSERT INTO t2 VALUES(zeroblob(30000));

      INSERT INTO t1 SELECT * FROM t2;

      DELETE FROM t2;

      DELETE FROM t1;

    }

    list [file size test.db] [file size test2.db]

  } {32768 32768}

  do_test incrvacuum2-2.2 {

    execsql {

      PRAGMA aux.incremental_vacuum(1)

    }

    list [file size test.db] [file size test2.db]

  } {32768 31744}

  do_test incrvacuum2-2.3 {

    execsql {

      PRAGMA aux.incremental_vacuum(5)

    }

    list [file size test.db] [file size test2.db]

  } {32768 26624}

  do_test incrvacuum2-2.4 {

    execsql {

      PRAGMA main.incremental_vacuum(5)

    }

    list [file size test.db] [file size test2.db]

  } {27648 26624}

  do_test incrvacuum2-2.5 {

    execsql {

      PRAGMA aux.incremental_vacuum

    }

    list [file size test.db] [file size test2.db]

  } {27648 3072}

  do_test incrvacuum2-2.6 {

    execsql {

      PRAGMA incremental_vacuum(1)

    }

    list [file size test.db] [file size test2.db]

  } {26624 3072}

}

do_test incrvacuum2-3.1 {

  execsql {

    PRAGMA auto_vacuum = 'full';

    BEGIN;

    CREATE TABLE abc(a);

    INSERT INTO abc VALUES(randstr(1500,1500));

    COMMIT;

  }

} {}

do_test incrvacuum2-3.2 {

  execsql {

    BEGIN;

    DELETE FROM abc;

    PRAGMA incremental_vacuum;

    COMMIT;

  }

} {}

integrity_check incremental2-3.3

finish_test