pragma2.test

sqlite-3.4.1,嵌入式数据库.是一个功能强大的开源数据库,给学习和研发以及小型公司的发展带来了全所未有的好处.

# 2002 March 6
#
# 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.
#
# This file implements tests for the PRAGMA command.
#
# $Id: pragma2.test,v 1.2 2007/06/27 10:20:01 drh Exp $

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

# Test organization:
#
# pragma2-1.*: Test freelist_count pragma on the main database.
# pragma2-2.*: Test freelist_count pragma on an attached database.
# pragma2-3.*: Test trying to write to the freelist_count is a no-op.
#

ifcapable !pragma {
  finish_test
  return
}

# Delete the preexisting database to avoid the special setup
# that the "all.test" script does.
#
db close
file delete test.db test.db-journal
file delete test3.db test3.db-journal
sqlite3 db test.db; set DB [sqlite3_connection_pointer db]
db eval {PRAGMA auto_vacuum=0}

do_test pragma2-1.1 {
  execsql {
    PRAGMA freelist_count;
  }
} {0}
do_test pragma2-1.2 {
  execsql {
    CREATE TABLE abc(a, b, c);
    PRAGMA freelist_count;
  }
} {0}
do_test pragma2-1.3 {
  execsql {
    DROP TABLE abc;
    PRAGMA freelist_count;
  }
} {1}
do_test pragma2-1.4 {
  execsql {
    PRAGMA main.freelist_count;
  }
} {1}

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

do_test pragma2-2.1 {
  execsql {
    ATTACH 'test2.db' AS aux;
    PRAGMA aux.auto_vacuum=OFF;
    PRAGMA aux.freelist_count;
  }
} {0}
do_test pragma2-2.2 {
  execsql {
    CREATE TABLE aux.abc(a, b, c);
    PRAGMA aux.freelist_count;
  }
} {0}
do_test pragma2-2.3 {
  set ::val [string repeat 0123456789 1000]
  execsql {
    INSERT INTO aux.abc VALUES(1, 2, $::val);
    PRAGMA aux.freelist_count;
  }
} {0}
do_test pragma2-2.4 {
  expr {[file size test2.db] / 1024}
} {11}
do_test pragma2-2.5 {
  execsql {
    DELETE FROM aux.abc;
    PRAGMA aux.freelist_count;
  }
} {9}

do_test pragma2-3.1 {
  execsql {
    PRAGMA aux.freelist_count;
    PRAGMA main.freelist_count;
    PRAGMA freelist_count;
  }
} {9 1 1}
do_test pragma2-3.2 {
  execsql {
    PRAGMA freelist_count = 500;
    PRAGMA freelist_count;
  }
} {1 1}
do_test pragma2-3.3 {
  execsql {
    PRAGMA aux.freelist_count = 500;
    PRAGMA aux.freelist_count;
  }
} {9 9}

finish_test