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# 2008 August 01
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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#
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# Tests for the lookaside memory allocator.
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#
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# $Id: lookaside.test,v 1.6 2008/09/30 00:31:38 drh Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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catch {db close}
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sqlite3_shutdown
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sqlite3_config_pagecache 0 0
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sqlite3_config_scratch 0 0
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sqlite3_initialize
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sqlite3 db test.db
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# Make sure sqlite3_db_config() and sqlite3_db_status are working.
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#
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do_test lookaside-1.1 {
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catch {sqlite3_config_error db}
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} {0}
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do_test lookaside-1.2 {
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sqlite3_db_config_lookaside db 1 18 18
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} {0}
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do_test lookaside-1.3 {
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sqlite3_db_status db SQLITE_DBSTATUS_LOOKASIDE_USED 0
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} {0 0 0}
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do_test lookaside-1.4 {
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db eval {CREATE TABLE t1(w,x,y,z);}
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foreach {x y z} [sqlite3_db_status db SQLITE_DBSTATUS_LOOKASIDE_USED 0] break
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expr {$x==0 && $y<$z && $z==18}
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} {1}
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do_test lookaside-1.5 {
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foreach {x y z} [sqlite3_db_status db SQLITE_DBSTATUS_LOOKASIDE_USED 1] break
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expr {$x==0 && $y<$z && $z==18}
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} {1}
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do_test lookaside-1.6 {
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foreach {x y z} [sqlite3_db_status db SQLITE_DBSTATUS_LOOKASIDE_USED 0] break
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expr {$x==0 && $y==$z && $y<18}
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} {1}
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do_test lookaside-1.7 {
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db cache flush
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foreach {x y z} [sqlite3_db_status db SQLITE_DBSTATUS_LOOKASIDE_USED 0] break
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expr {$x==0 && $y==0 && $z<18}
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} {1}
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do_test lookaside-1.8 {
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db cache flush
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foreach {x y z} [sqlite3_db_status db SQLITE_DBSTATUS_LOOKASIDE_USED 1] break
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expr {$x==0 && $y==0 && $z<18}
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} {1}
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do_test lookaside-1.9 {
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db cache flush
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sqlite3_db_status db SQLITE_DBSTATUS_LOOKASIDE_USED 0
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} {0 0 0}
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do_test lookaside-2.1 {
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sqlite3_db_config_lookaside db 0 100 1000
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} {0}
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do_test lookaside-2.2 {
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db eval {CREATE TABLE t2(x);}
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foreach {x y z} [sqlite3_db_status db SQLITE_DBSTATUS_LOOKASIDE_USED 0] break
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expr {$x==0 && $y<$z && $z>10 && $z<100}
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} {1}
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do_test lookaside-2.3 {
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sqlite3_db_config_lookaside db 0 50 50
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} {5} ;# SQLITE_BUSY
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do_test lookaside-2.4 {
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db cache flush
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sqlite3_db_config_lookaside db 0 50 50
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} {0} ;# SQLITE_OK
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# sqlite3_db_status() with an invalid verb returns an error.
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#
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do_test lookaside-3.1 {
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sqlite3_db_status db 99999 0
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} {1 0 0}
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# Test that an invalid verb on sqlite3_config() is detected and
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# reported as an error.
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#
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do_test lookaside-4.1 {
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db close
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sqlite3_shutdown
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catch sqlite3_config_error
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} {0}
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sqlite3_initialize
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finish_test
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