# 2005 January 19
#
# 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.
#
#***********************************************************************
#
# $Id: shared3.test,v 1.4 2008/08/20 14:49:25 danielk1977 Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
db close
ifcapable !shared_cache {
finish_test
return
}
set ::enable_shared_cache [sqlite3_enable_shared_cache 1]
# Ticket #1824
#
do_test shared3-1.1 {
file delete -force test.db test.db-journal
sqlite3 db1 test.db
db1 eval {
PRAGMA encoding=UTF16;
CREATE TABLE t1(x,y);
INSERT INTO t1 VALUES('abc','This is a test string');
}
db1 close
sqlite3 db1 test.db
db1 eval {SELECT * FROM t1}
} {abc {This is a test string}}
do_test shared3-1.2 {
sqlite3 db2 test.db
db2 eval {SELECT y FROM t1 WHERE x='abc'}
} {{This is a test string}}
db1 close
db2 close
do_test shared3-2.1 {
sqlite3 db1 test.db
execsql {
PRAGMA main.cache_size = 10;
} db1
} {}
do_test shared3-2.2 {
execsql { PRAGMA main.cache_size } db1
} {10}
do_test shared3-2.3 {
sqlite3 db2 test.db
execsql { PRAGMA main.cache_size } db1
} {10}
do_test shared3-2.4 {
execsql { PRAGMA main.cache_size } db2
} {10}
do_test shared3-2.5 {
execsql { PRAGMA main.cache_size } db1
} {10}
# The cache-size should now be 10 pages. However at one point there was
# a bug that caused the cache size to return to the default value when
# a second connection was opened on the shared-cache (as happened in
# test case shared3-2.3 above). The goal of the following tests is to
# ensure that the cache-size really is 10 pages.
#
if {$::tcl_platform(platform)=="unix"} {
set alternative_name ./test.db
} else {
set alternative_name TEST.DB
}
do_test shared3-2.6 {
sqlite3 db3 $alternative_name
catchsql {select count(*) from sqlite_master} db3
} {0 1}
do_test shared3-2.7 {
execsql {
BEGIN;
INSERT INTO t1 VALUES(10, randomblob(5000))
} db1
catchsql {select count(*) from sqlite_master} db3
} {0 1}
do_test shared3-2.8 {
db3 close
execsql {
INSERT INTO t1 VALUES(10, randomblob(10000))
} db1
# If the pager-cache is really still limited to 10 pages, then the INSERT
# statement above should have caused the pager to grab an exclusive lock
# on the database file so that the cache could be spilled.
#
catch { sqlite3 db3 $alternative_name }
catchsql {select count(*) from sqlite_master} db3
} {1 {database is locked}}
db1 close
db2 close
db3 close
sqlite3_enable_shared_cache $::enable_shared_cache
finish_test