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214 lines
5.8 KiB
Plaintext
214 lines
5.8 KiB
Plaintext
# 2007 May 04
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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
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# focus of this file is testing the incremental vacuum feature.
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#
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# $Id: incrvacuum2.test,v 1.6 2009/07/25 13:42:50 danielk1977 Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# If this build of the library does not support auto-vacuum, omit this
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# whole file.
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ifcapable {!autovacuum || !pragma} {
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finish_test
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return
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}
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set testprefix incrvacuum2
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# Create a database in incremental vacuum mode that has many
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# pages on the freelist.
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#
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do_test incrvacuum2-1.1 {
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execsql {
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PRAGMA page_size=1024;
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PRAGMA auto_vacuum=incremental;
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CREATE TABLE t1(x);
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INSERT INTO t1 VALUES(zeroblob(30000));
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DELETE FROM t1;
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}
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file size test.db
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} {32768}
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# Vacuum off a single page.
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#
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do_test incrvacuum2-1.2 {
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execsql {
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PRAGMA incremental_vacuum(1);
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}
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file size test.db
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} {31744}
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# Vacuum off five pages
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#
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do_test incrvacuum2-1.3 {
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execsql {
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PRAGMA incremental_vacuum(5);
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}
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file size test.db
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} {26624}
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# Vacuum off all the rest
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#
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do_test incrvacuum2-1.4 {
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execsql {
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PRAGMA incremental_vacuum(1000);
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}
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file size test.db
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} {3072}
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# Make sure incremental vacuum works on attached databases.
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#
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ifcapable attach {
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do_test incrvacuum2-2.1 {
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forcedelete test2.db test2.db-journal
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execsql {
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ATTACH DATABASE 'test2.db' AS aux;
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PRAGMA aux.auto_vacuum=incremental;
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CREATE TABLE aux.t2(x);
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INSERT INTO t2 VALUES(zeroblob(30000));
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INSERT INTO t1 SELECT * FROM t2;
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DELETE FROM t2;
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DELETE FROM t1;
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}
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list [file size test.db] [file size test2.db]
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} {32768 32768}
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do_test incrvacuum2-2.2 {
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execsql {
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PRAGMA aux.incremental_vacuum(1)
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}
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list [file size test.db] [file size test2.db]
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} {32768 31744}
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do_test incrvacuum2-2.3 {
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execsql {
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PRAGMA aux.incremental_vacuum(5)
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}
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list [file size test.db] [file size test2.db]
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} {32768 26624}
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do_test incrvacuum2-2.4 {
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execsql {
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PRAGMA main.incremental_vacuum(5)
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}
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list [file size test.db] [file size test2.db]
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} {27648 26624}
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do_test incrvacuum2-2.5 {
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execsql {
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PRAGMA aux.incremental_vacuum
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}
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list [file size test.db] [file size test2.db]
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} {27648 3072}
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do_test incrvacuum2-2.6 {
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execsql {
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PRAGMA incremental_vacuum(1)
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}
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list [file size test.db] [file size test2.db]
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} {26624 3072}
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}
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do_test incrvacuum2-3.1 {
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execsql {
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PRAGMA auto_vacuum = 'full';
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BEGIN;
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CREATE TABLE abc(a);
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INSERT INTO abc VALUES(randstr(1500,1500));
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COMMIT;
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}
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} {}
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do_test incrvacuum2-3.2 {
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execsql {
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BEGIN;
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DELETE FROM abc;
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PRAGMA incremental_vacuum;
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COMMIT;
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}
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} {}
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integrity_check incrvacuum2-3.3
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if {[wal_is_capable]} {
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# At one point, when a specific page was being extracted from the b-tree
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# free-list (e.g. during an incremental-vacuum), all trunk pages that
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# occurred before the specific page in the free-list trunk were being
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# written to the journal or wal file. This is not necessary. Only the
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# extracted page and the page that contains the pointer to it need to
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# be journalled.
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#
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# This problem was fixed by [d03d63d77e] (just before 3.7.6 release).
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#
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# This test case builds a database containing many free pages. Then runs
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# "PRAGMA incremental_vacuum(1)" until the db contains zero free pages.
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# Each "PRAGMA incremental_vacuum(1)" should modify at most 4 pages. The
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# worst case is when a trunk page is removed from the end of the db file.
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# In this case pages written are:
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#
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# 1. The previous trunk page (that contains a pointer to the recycled
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# trunk page), and
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# 2. The leaf page transformed into a trunk page to replace the recycled
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# page, and
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# 3. The trunk page that contained a pointer to the leaf page used
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# in (2), and
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# 4. Page 1. Page 1 is always updated, even in WAL mode, since it contains
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# the "number of free-list pages" field.
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#
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db close
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forcedelete test.db
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sqlite3 db test.db
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do_execsql_test 4.1 {
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PRAGMA page_size = 512;
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PRAGMA auto_vacuum = 2;
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CREATE TABLE t1(x);
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INSERT INTO t1 VALUES(randomblob(400));
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INSERT INTO t1 SELECT * FROM t1; -- 2
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INSERT INTO t1 SELECT * FROM t1; -- 4
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INSERT INTO t1 SELECT * FROM t1; -- 8
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INSERT INTO t1 SELECT * FROM t1; -- 16
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INSERT INTO t1 SELECT * FROM t1; -- 32
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INSERT INTO t1 SELECT * FROM t1; -- 128
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INSERT INTO t1 SELECT * FROM t1; -- 256
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INSERT INTO t1 SELECT * FROM t1; -- 512
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INSERT INTO t1 SELECT * FROM t1; -- 1024
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INSERT INTO t1 SELECT * FROM t1; -- 2048
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INSERT INTO t1 SELECT * FROM t1; -- 4096
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INSERT INTO t1 SELECT * FROM t1; -- 8192
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DELETE FROM t1 WHERE oid>512;
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DELETE FROM t1;
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}
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do_test 4.2 {
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execsql {
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PRAGMA journal_mode = WAL;
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PRAGMA incremental_vacuum(1);
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}
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} {wal}
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do_test 4.2.1 {
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execsql { PRAGMA wal_checkpoint }
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file size test.db-wal
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} [expr {32+2*(512+24)}]
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do_test 4.3 {
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db close
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sqlite3 db test.db
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set maxsz 0
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while {[file size test.db] > [expr 512*3]} {
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execsql { PRAGMA journal_mode = WAL }
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execsql { PRAGMA wal_checkpoint }
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execsql { PRAGMA incremental_vacuum(1) }
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set newsz [file size test.db-wal]
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if {$newsz>$maxsz} {set maxsz $newsz}
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}
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set maxsz
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} [expr {32+3*(512+24)}]
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}
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finish_test
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