448 lines
10 KiB
Plaintext
448 lines
10 KiB
Plaintext
# 2007 March 24
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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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# This file implements regression tests for SQLite library. The focus
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# of these tests is exclusive access mode (i.e. the thing activated by
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# "PRAGMA locking_mode = EXCLUSIVE").
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#
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# $Id: exclusive.test,v 1.5 2007/04/06 21:42:22 drh Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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ifcapable {!pager_pragmas} {
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finish_test
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return
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}
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file delete -force test2.db-journal
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file delete -force test2.db
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file delete -force test3.db-journal
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file delete -force test3.db
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file delete -force test4.db-journal
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file delete -force test4.db
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# The locking mode for the TEMP table is always "exclusive" for
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# on-disk tables and "normal" for in-memory tables.
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#
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if {[info exists TEMP_STORE] && $TEMP_STORE>=2} {
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set temp_mode normal
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} else {
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set temp_mode exclusive
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}
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#----------------------------------------------------------------------
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# Test cases exclusive-1.X test the PRAGMA logic.
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#
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do_test exclusive-1.0 {
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execsql {
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pragma locking_mode;
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pragma main.locking_mode;
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pragma temp.locking_mode;
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}
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} [list normal normal $temp_mode]
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do_test exclusive-1.1 {
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execsql {
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pragma locking_mode = exclusive;
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}
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} {exclusive}
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do_test exclusive-1.2 {
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execsql {
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pragma locking_mode;
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pragma main.locking_mode;
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pragma temp.locking_mode;
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}
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} [list exclusive exclusive $temp_mode]
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do_test exclusive-1.3 {
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execsql {
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pragma locking_mode = normal;
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}
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} {normal}
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do_test exclusive-1.4 {
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execsql {
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pragma locking_mode;
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pragma main.locking_mode;
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pragma temp.locking_mode;
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}
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} [list normal normal $temp_mode]
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do_test exclusive-1.5 {
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execsql {
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pragma locking_mode = invalid;
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}
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} {normal}
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do_test exclusive-1.6 {
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execsql {
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pragma locking_mode;
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pragma main.locking_mode;
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pragma temp.locking_mode;
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}
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} [list normal normal $temp_mode]
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do_test exclusive-1.7 {
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execsql {
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pragma locking_mode = exclusive;
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ATTACH 'test2.db' as aux;
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}
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execsql {
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pragma main.locking_mode;
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pragma aux.locking_mode;
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}
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} {exclusive exclusive}
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do_test exclusive-1.8 {
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execsql {
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pragma main.locking_mode = normal;
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}
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execsql {
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pragma main.locking_mode;
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pragma temp.locking_mode;
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pragma aux.locking_mode;
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}
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} [list normal $temp_mode exclusive]
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do_test exclusive-1.9 {
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execsql {
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pragma locking_mode;
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}
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} {exclusive}
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do_test exclusive-1.10 {
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execsql {
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ATTACH 'test3.db' as aux2;
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}
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execsql {
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pragma main.locking_mode;
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pragma aux.locking_mode;
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pragma aux2.locking_mode;
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}
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} {normal exclusive exclusive}
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do_test exclusive-1.11 {
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execsql {
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pragma aux.locking_mode = normal;
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}
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execsql {
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pragma main.locking_mode;
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pragma aux.locking_mode;
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pragma aux2.locking_mode;
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}
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} {normal normal exclusive}
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do_test exclusive-1.12 {
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execsql {
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pragma locking_mode = normal;
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}
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execsql {
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pragma main.locking_mode;
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pragma temp.locking_mode;
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pragma aux.locking_mode;
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pragma aux2.locking_mode;
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}
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} [list normal $temp_mode normal normal]
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do_test exclusive-1.13 {
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execsql {
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ATTACH 'test4.db' as aux3;
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}
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execsql {
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pragma main.locking_mode;
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pragma temp.locking_mode;
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pragma aux.locking_mode;
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pragma aux2.locking_mode;
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pragma aux3.locking_mode;
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}
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} [list normal $temp_mode normal normal normal]
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do_test exclusive-1.99 {
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execsql {
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DETACH aux;
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DETACH aux2;
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DETACH aux3;
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}
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} {}
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#----------------------------------------------------------------------
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# Test cases exclusive-2.X verify that connections in exclusive
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# locking_mode do not relinquish locks.
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#
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do_test exclusive-2.0 {
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execsql {
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CREATE TABLE abc(a, b, c);
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INSERT INTO abc VALUES(1, 2, 3);
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PRAGMA locking_mode = exclusive;
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}
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} {exclusive}
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do_test exclusive-2.1 {
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sqlite3 db2 test.db
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execsql {
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INSERT INTO abc VALUES(4, 5, 6);
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SELECT * FROM abc;
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} db2
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} {1 2 3 4 5 6}
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do_test exclusive-2.2 {
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# This causes connection 'db' (in exclusive mode) to establish
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# a shared-lock on the db. The other connection should now be
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# locked out as a writer.
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execsql {
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SELECT * FROM abc;
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} db
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} {1 2 3 4 5 6}
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do_test exclusive-2.4 {
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execsql {
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SELECT * FROM abc;
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} db2
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} {1 2 3 4 5 6}
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do_test exclusive-2.5 {
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catchsql {
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INSERT INTO abc VALUES(7, 8, 9);
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} db2
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} {1 {database is locked}}
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do_test exclusive-2.6 {
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# Because connection 'db' only has a shared-lock, the other connection
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# will be able to get a RESERVED, but will fail to upgrade to EXCLUSIVE.
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execsql {
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BEGIN;
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INSERT INTO abc VALUES(7, 8, 9);
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} db2
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catchsql {
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COMMIT
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} db2
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} {1 {database is locked}}
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do_test exclusive-2.7 {
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catchsql {
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COMMIT
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} db2
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} {1 {database is locked}}
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do_test exclusive-2.8 {
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execsql {
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ROLLBACK;
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} db2
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} {}
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do_test exclusive-2.9 {
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# Write the database to establish the exclusive lock with connection 'db.
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execsql {
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INSERT INTO abc VALUES(7, 8, 9);
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} db
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catchsql {
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SELECT * FROM abc;
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} db2
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} {1 {database is locked}}
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do_test exclusive-2.10 {
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# Changing the locking-mode does not release any locks.
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execsql {
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PRAGMA locking_mode = normal;
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} db
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catchsql {
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SELECT * FROM abc;
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} db2
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} {1 {database is locked}}
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do_test exclusive-2.11 {
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# After changing the locking mode, accessing the db releases locks.
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execsql {
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SELECT * FROM abc;
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} db
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execsql {
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SELECT * FROM abc;
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} db2
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} {1 2 3 4 5 6 7 8 9}
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db2 close
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#----------------------------------------------------------------------
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# Tests exclusive-3.X - test that a connection in exclusive mode
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# truncates instead of deletes the journal file when committing
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# a transaction.
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#
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proc filestate {fname} {
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set exists 0
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set content 0
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if {[file exists $fname]} {
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set exists 1
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set content [expr {[file size $fname] > 0}]
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}
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list $exists $content
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}
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do_test exclusive-3.0 {
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filestate test.db-journal
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} {0 0}
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do_test exclusive-3.1 {
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execsql {
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PRAGMA locking_mode = exclusive;
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BEGIN;
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DELETE FROM abc;
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}
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filestate test.db-journal
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} {1 1}
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do_test exclusive-3.2 {
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execsql {
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COMMIT;
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}
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filestate test.db-journal
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} {1 0}
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do_test exclusive-3.3 {
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execsql {
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INSERT INTO abc VALUES('A', 'B', 'C');
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SELECT * FROM abc;
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}
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} {A B C}
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do_test exclusive-3.4 {
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execsql {
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BEGIN;
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UPDATE abc SET a = 1, b = 2, c = 3;
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ROLLBACK;
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SELECT * FROM abc;
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}
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} {A B C}
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do_test exclusive-3.5 {
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filestate test.db-journal
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} {1 0}
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do_test exclusive-3.6 {
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execsql {
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PRAGMA locking_mode = normal;
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SELECT * FROM abc;
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}
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filestate test.db-journal
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} {0 0}
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#----------------------------------------------------------------------
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# Tests exclusive-4.X - test that rollback works correctly when
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# in exclusive-access mode.
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#
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# The following procedure computes a "signature" for table "t3". If
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# T3 changes in any way, the signature should change.
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#
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# This is used to test ROLLBACK. We gather a signature for t3, then
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# make lots of changes to t3, then rollback and take another signature.
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# The two signatures should be the same.
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#
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proc signature {} {
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return [db eval {SELECT count(*), md5sum(x) FROM t3}]
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}
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do_test exclusive-4.0 {
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execsql { PRAGMA locking_mode = exclusive; }
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execsql { PRAGMA default_cache_size = 10; }
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execsql {
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BEGIN;
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CREATE TABLE t3(x TEXT);
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INSERT INTO t3 VALUES(randstr(10,400));
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INSERT INTO t3 VALUES(randstr(10,400));
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INSERT INTO t3 SELECT randstr(10,400) FROM t3;
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INSERT INTO t3 SELECT randstr(10,400) FROM t3;
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INSERT INTO t3 SELECT randstr(10,400) FROM t3;
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INSERT INTO t3 SELECT randstr(10,400) FROM t3;
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COMMIT;
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}
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execsql {SELECT count(*) FROM t3;}
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} {32}
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set ::X [signature]
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do_test exclusive-4.1 {
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execsql {
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BEGIN;
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DELETE FROM t3 WHERE random()%10!=0;
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INSERT INTO t3 SELECT randstr(10,10)||x FROM t3;
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INSERT INTO t3 SELECT randstr(10,10)||x FROM t3;
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SELECT count(*) FROM t3;
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ROLLBACK;
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}
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signature
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} $::X
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do_test exclusive-4.2 {
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execsql {
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BEGIN;
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DELETE FROM t3 WHERE random()%10!=0;
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INSERT INTO t3 SELECT randstr(10,10)||x FROM t3;
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DELETE FROM t3 WHERE random()%10!=0;
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INSERT INTO t3 SELECT randstr(10,10)||x FROM t3;
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ROLLBACK;
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}
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signature
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} $::X
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do_test exclusive-4.3 {
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execsql {
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INSERT INTO t3 SELECT randstr(10,400) FROM t3 WHERE random()%10==0;
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}
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} {}
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do_test exclusive-4.4 {
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catch {set ::X [signature]}
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} {0}
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do_test exclusive-4.5 {
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execsql {
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PRAGMA locking_mode = NORMAL;
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DROP TABLE t3;
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DROP TABLE abc;
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}
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} {normal}
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#----------------------------------------------------------------------
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# Tests exclusive-5.X - test that statement journals are truncated
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# instead of deleted when in exclusive access mode.
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#
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# Close and reopen the database so that the temp database is no
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# longer active.
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#
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db close
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sqlite db test.db
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do_test exclusive-5.0 {
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execsql {
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CREATE TABLE abc(a UNIQUE, b UNIQUE, c UNIQUE);
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BEGIN;
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INSERT INTO abc VALUES(1, 2, 3);
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INSERT INTO abc SELECT a+1, b+1, c+1 FROM abc;
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}
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} {}
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do_test exclusive-5.1 {
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# Three files are open: The db, journal and statement-journal.
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set sqlite_open_file_count
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} {3}
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do_test exclusive-5.2 {
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execsql {
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COMMIT;
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}
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# One file open: the db.
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set sqlite_open_file_count
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} {1}
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do_test exclusive-5.3 {
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execsql {
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PRAGMA locking_mode = exclusive;
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BEGIN;
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INSERT INTO abc VALUES(5, 6, 7);
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}
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# Two files open: the db and journal.
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set sqlite_open_file_count
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} {2}
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do_test exclusive-5.4 {
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execsql {
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INSERT INTO abc SELECT a+10, b+10, c+10 FROM abc;
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}
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# Three files are open: The db, journal and statement-journal.
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set sqlite_open_file_count
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} {3}
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do_test exclusive-5.5 {
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execsql {
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COMMIT;
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}
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# Three files are still open: The db, journal and statement-journal.
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set sqlite_open_file_count
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} {3}
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do_test exclusive-5.6 {
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execsql {
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PRAGMA locking_mode = normal;
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SELECT * FROM abc;
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}
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} {normal 1 2 3 2 3 4 5 6 7 11 12 13 12 13 14 15 16 17}
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do_test exclusive-5.7 {
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# Just the db open.
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set sqlite_open_file_count
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} {1}
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finish_test
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