122 lines
3.2 KiB
Plaintext
122 lines
3.2 KiB
Plaintext
# 2011 December 21
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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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# This file implements tests of the SQLITE_IOCAP_POWERSAFE_OVERWRITE property
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# and the SQLITE_FCNTL_POWERSAFE_OVERWRITE file-control for manipulating it.
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#
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# The name of this file comes from the fact that we used to call the
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# POWERSAFE_OVERWRITE property ZERO_DAMAGE.
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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set testprefix zerodamage
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ifcapable !vtab {
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finish_test
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return
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}
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# POWERSAFE_OVERWRITE defaults to true
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#
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do_test zerodamage-1.0 {
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file_control_powersafe_overwrite db -1
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} {0 1}
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# Check the ability to turn zero-damage on and off.
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#
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do_test zerodamage-1.1 {
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file_control_powersafe_overwrite db 0
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file_control_powersafe_overwrite db -1
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} {0 0}
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do_test zerodamage-1.2 {
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file_control_powersafe_overwrite db 1
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file_control_powersafe_overwrite db -1
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} {0 1}
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# Run a transaction with zero-damage on, a small page size and a much larger
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# sectorsize. Verify that the maximum journal size is small - that the
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# rollback journal is not being padded.
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#
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do_test zerodamage-2.0 {
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db close
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testvfs tv -default 1
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tv sectorsize 8192
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sqlite3 db file:test.db?psow=TRUE -uri 1
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unset -nocomplain ::max_journal_size
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set ::max_journal_size 0
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proc xDeleteCallback {method file args} {
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set sz [file size $file]
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if {$sz>$::max_journal_size} {set ::max_journal_size $sz}
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}
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tv filter xDelete
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tv script xDeleteCallback
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load_static_extension db wholenumber
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db eval {
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PRAGMA page_size=1024;
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PRAGMA journal_mode=DELETE;
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PRAGMA cache_size=5;
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CREATE VIRTUAL TABLE nums USING wholenumber;
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CREATE TABLE t1(x, y);
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INSERT INTO t1 SELECT value, randomblob(100) FROM nums
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WHERE value BETWEEN 1 AND 400;
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}
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set ::max_journal_size 0
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db eval {
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UPDATE t1 SET y=randomblob(50) WHERE x=123;
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}
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concat [file_control_powersafe_overwrite db -1] [set ::max_journal_size]
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} {0 1 2576}
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# Repeat the previous step with zero-damage turned off. This time the
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# maximum rollback journal size should be much larger.
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#
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do_test zerodamage-2.1 {
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set ::max_journal_size 0
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db close
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sqlite3 db file:test.db?psow=FALSE -uri 1
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db eval {
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UPDATE t1 SET y=randomblob(50) WHERE x=124;
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}
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concat [file_control_powersafe_overwrite db -1] [set ::max_journal_size]
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} {0 0 24704}
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ifcapable wal {
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# Run a WAL-mode transaction with POWERSAFE_OVERWRITE on to verify that the
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# WAL file does not get too big.
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#
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do_test zerodamage-3.0 {
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db eval {
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PRAGMA journal_mode=WAL;
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}
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db close
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sqlite3 db file:test.db?psow=TRUE -uri 1
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db eval {
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UPDATE t1 SET y=randomblob(50) WHERE x=124;
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}
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file size test.db-wal
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} {1080}
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# Repeat the previous with POWERSAFE_OVERWRITE off. Verify that the WAL file
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# is padded.
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#
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do_test zerodamage-3.1 {
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db close
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sqlite3 db file:test.db?psow=FALSE -uri 1
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db eval {
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UPDATE t1 SET y=randomblob(50) WHERE x=124;
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}
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file size test.db-wal
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} {8416}
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}
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finish_test
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