# 2008 August 01

#

# 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.

#

#***********************************************************************

#

# Tests for the lookaside memory allocator.

#

# $Id: lookaside.test,v 1.6 2008/09/30 00:31:38 drh Exp $

set testdir [file dirname $argv0]

source $testdir/tester.tcl

catch {db close}

sqlite3_shutdown

sqlite3_config_pagecache 0 0

sqlite3_config_scratch 0 0

sqlite3_initialize

sqlite3 db test.db

# Make sure sqlite3_db_config() and sqlite3_db_status are working.

#

do_test lookaside-1.1 {

  catch {sqlite3_config_error db}

} {0}

do_test lookaside-1.2 {

  sqlite3_db_config_lookaside db 1 18 18

} {0}

do_test lookaside-1.3 {

  sqlite3_db_status db SQLITE_DBSTATUS_LOOKASIDE_USED 0

} {0 0 0}

do_test lookaside-1.4 {

  db eval {CREATE TABLE t1(w,x,y,z);}

  foreach {x y z} [sqlite3_db_status db SQLITE_DBSTATUS_LOOKASIDE_USED 0] break

  expr {$x==0 && $y<$z && $z==18}

} {1}

do_test lookaside-1.5 {

  foreach {x y z} [sqlite3_db_status db SQLITE_DBSTATUS_LOOKASIDE_USED 1] break

  expr {$x==0 && $y<$z && $z==18}

} {1}

do_test lookaside-1.6 {

  foreach {x y z} [sqlite3_db_status db SQLITE_DBSTATUS_LOOKASIDE_USED 0] break

  expr {$x==0 && $y==$z && $y<18}

} {1}

do_test lookaside-1.7 {

  db cache flush

  foreach {x y z} [sqlite3_db_status db SQLITE_DBSTATUS_LOOKASIDE_USED 0] break

  expr {$x==0 && $y==0 && $z<18}

} {1}

do_test lookaside-1.8 {

  db cache flush

  foreach {x y z} [sqlite3_db_status db SQLITE_DBSTATUS_LOOKASIDE_USED 1] break

  expr {$x==0 && $y==0 && $z<18}

} {1}

do_test lookaside-1.9 {

  db cache flush

  sqlite3_db_status db SQLITE_DBSTATUS_LOOKASIDE_USED 0

} {0 0 0}

do_test lookaside-2.1 {

  sqlite3_db_config_lookaside db 0 100 1000

} {0}

do_test lookaside-2.2 {

  db eval {CREATE TABLE t2(x);}

  foreach {x y z} [sqlite3_db_status db SQLITE_DBSTATUS_LOOKASIDE_USED 0] break

  expr {$x==0 && $y<$z && $z>10 && $z<100}

} {1}

do_test lookaside-2.3 {

  sqlite3_db_config_lookaside db 0 50 50

} {5}  ;# SQLITE_BUSY

do_test lookaside-2.4 {

  db cache flush

  sqlite3_db_config_lookaside db 0 50 50

} {0}  ;# SQLITE_OK

# sqlite3_db_status() with an invalid verb returns an error.

#

do_test lookaside-3.1 {

  sqlite3_db_status db 99999 0

} {1 0 0}

# Test that an invalid verb on sqlite3_config() is detected and

# reported as an error.

#

do_test lookaside-4.1 {

  db close

  sqlite3_shutdown

  catch sqlite3_config_error

} {0}

sqlite3_initialize

finish_test