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