411 lines
13 KiB
Plaintext
411 lines
13 KiB
Plaintext
# 2010 May 03
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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 operation of the library in
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# "PRAGMA journal_mode=WAL" mode.
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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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source $testdir/malloc_common.tcl
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ifcapable !wal {finish_test ; return }
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#-------------------------------------------------------------------------
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# This test case, walfault-1-*, simulates faults while executing a
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#
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# PRAGMA journal_mode = WAL;
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#
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# statement immediately after creating a new database.
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#
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do_test walfault-1-pre-1 {
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db close
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file delete -force test.db test.db-wal test.db-journal
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faultsim_save_and_close
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} {}
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do_faultsim_test walfault-1 -prep {
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faultsim_restore_and_reopen
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} -body {
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db eval { PRAGMA main.journal_mode = WAL }
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} -test {
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faultsim_test_result {0 wal}
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# Test that the connection that encountered an error as part of
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# "PRAGMA journal_mode = WAL" and a new connection use the same
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# journal mode when accessing the database.
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#
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# If "PRAGMA journal_mode" is executed immediately, connection [db] (the
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# one that hit the error in journal_mode="WAL") might return "wal" even
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# if it failed to switch the database to WAL mode. This is not considered
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# a problem. When it tries to read the database, connection [db] correctly
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# recognizes that it is a rollback database and switches back to a
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# rollback compatible journal mode.
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#
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set jm [db one {SELECT * FROM sqlite_master ; PRAGMA main.journal_mode}]
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sqlite3 db2 test.db
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set jm2 [db2 one {SELECT * FROM sqlite_master ; PRAGMA main.journal_mode}]
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db2 close
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if { $jm!=$jm2 } { error "Journal modes do not match: $jm $jm2" }
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if { $testrc==0 && $jm!="wal" } { error "Journal mode is not WAL" }
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}
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#--------------------------------------------------------------------------
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# Test case walfault-2-* tests fault injection during recovery of a
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# short WAL file (a dozen frames or thereabouts).
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#
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do_test walfault-2-pre-1 {
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sqlite3 db test.db
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execsql {
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PRAGMA journal_mode = WAL;
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BEGIN;
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CREATE TABLE x(y, z, UNIQUE(y, z));
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INSERT INTO x VALUES(randomblob(100), randomblob(100));
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COMMIT;
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PRAGMA wal_checkpoint;
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INSERT INTO x SELECT randomblob(100), randomblob(100) FROM x;
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INSERT INTO x SELECT randomblob(100), randomblob(100) FROM x;
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INSERT INTO x SELECT randomblob(100), randomblob(100) FROM x;
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}
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execsql {
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SELECT count(*) FROM x
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}
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} {8}
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do_test walfault-2-pre-2 {
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faultsim_save_and_close
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faultsim_restore_and_reopen
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execsql { SELECT count(*) FROM x }
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} {8}
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do_faultsim_test walfault-2 -prep {
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faultsim_restore_and_reopen
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} -body {
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execsql { SELECT count(*) FROM x }
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} -test {
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# Test that all the rows in the WAL were recovered.
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faultsim_test_result {0 8}
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# Run the integrity_check to make sure nothing strange has occurred.
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set ic [db eval { PRAGMA integrity_check }]
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if {$ic != "ok"} { error "Integrity check: $ic" }
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}
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#--------------------------------------------------------------------------
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# Test fault injection while writing and checkpointing a small WAL file.
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#
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do_test walfault-3-pre-1 {
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sqlite3 db test.db
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execsql {
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PRAGMA auto_vacuum = 1;
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PRAGMA journal_mode = WAL;
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CREATE TABLE abc(a PRIMARY KEY);
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INSERT INTO abc VALUES(randomblob(1500));
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}
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db close
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faultsim_save_and_close
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} {}
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do_faultsim_test walfault-3 -prep {
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faultsim_restore_and_reopen
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} -body {
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db eval {
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DELETE FROM abc;
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PRAGMA wal_checkpoint;
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}
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} -test {
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faultsim_test_result {0 {}}
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}
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# A [testvfs] callback for the VFS created by [do_shmfault_test]. This
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# callback injects SQLITE_IOERR faults into methods for which an entry
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# in array ::shmfault_ioerr_methods is defined. For example, to enable
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# errors in xShmOpen:
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#
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# set ::shmfault_ioerr_methods(xShmOpen) 1
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#
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# Faults are not injected into xShmRelease, xShmClose or xShmLock method
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# calls. The global tcl variables used are:
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#
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# $::shmfault_ioerr_countdown
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# $::shmfault_ioerr_persist
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# $::shmfault_ioerr_methods
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#
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proc shmfault_vfs_cb {method args} {
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# If ::shmfault_ioerr_countdown is not set, always return SQLITE_OK.
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#
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if {[info exists ::shmfault_ioerr_countdown]==0} { return SQLITE_OK }
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if {[info exists ::shmfault_ioerr_methods($method)]} {
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incr ::shmfault_ioerr_countdown -1
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if { ($::shmfault_ioerr_countdown==0)
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|| ($::shmfault_ioerr_countdown<=0 && $::shmfault_ioerr_persist)
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} {
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return SQLITE_IOERR
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}
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}
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return SQLITE_OK
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}
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# Options are:
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#
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# -tclprep TCL
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# -sqlprep SQL
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# -sqlbody SQL
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#
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proc do_shmfault_test {name args} {
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set A(-tclprep) "sqlite3 db test.db -vfs shmfault"
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set A(-sqlprep) ""
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set A(-sqlbody) ""
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set A(-methods) [list xShmGet xShmOpen xShmSize]
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set A(-coverageonly) 0
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array set A $args
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# Create a VFS to use:
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testvfs shmfault shmfault_vfs_cb
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unset -nocomplain ::shmfault_ioerr_methods
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foreach m $A(-methods) { set ::shmfault_ioerr_methods($m) 1 }
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foreach mode {transient persistent} {
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set ::shmfault_ioerr_persist [expr {$mode == "persistent"}]
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for {set nDelay 1} {$nDelay < 10000} {incr nDelay} {
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file delete -force test.db test.db-wal test.db-journal
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eval $A(-tclprep)
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db eval $A(-sqlprep)
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set ::shmfault_ioerr_countdown $nDelay
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set rc [catch { db eval $A(-sqlbody) } msg]
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set hit_error [expr {$::shmfault_ioerr_countdown<=0}]
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unset ::shmfault_ioerr_countdown
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catch { db close }
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if {$A(-coverageonly)} { set rc $hit_error }
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do_test $name-$mode.$nDelay.1 [list set {} $hit_error] $rc
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if {$hit_error==0} break
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}
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}
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shmfault delete
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}
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do_shmfault_test walfault-shm-1 -sqlbody {
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PRAGMA journal_mode = WAL;
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CREATE TABLE t1(a PRIMARY KEY, b);
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INSERT INTO t1 VALUES('a', 'b');
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PRAGMA wal_checkpoint;
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}
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do_shmfault_test walfault-shm-2 -methods xShmSize -sqlprep {
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PRAGMA page_size = 512;
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PRAGMA journal_mode = WAL;
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PRAGMA wal_autocheckpoint = 0;
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} -sqlbody {
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CREATE TABLE t1(x);
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BEGIN;
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INSERT INTO t1 VALUES(randomblob(400)); /* 1 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 2 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 4 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 8 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 16 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 32 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 64 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 128 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 256 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 512 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 1024 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 2048 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 4096 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 8192 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 16384 */
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COMMIT;
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}
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do_shmfault_test walfault-shm-3 -methods xShmSize -tclprep {
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sqlite3 db test.db -vfs shmfault
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unset -nocomplain ::shmfault_ioerr_countdown
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db eval {
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PRAGMA page_size = 512;
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PRAGMA journal_mode = WAL;
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PRAGMA wal_autocheckpoint = 0;
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CREATE TABLE t1(x);
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BEGIN;
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INSERT INTO t1 VALUES(randomblob(400)); /* 1 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 2 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 4 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 8 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 16 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 32 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 64 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 128 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 256 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 512 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 1024 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 2048 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 4096 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 8192 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 16384 */
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COMMIT;
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}
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set ::shmfault_ioerr_countdown 1
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set ::shmfault_ioerr_methods(xShmGet) 1
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db close
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unset ::shmfault_ioerr_methods(xShmGet)
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if {[file exists test.db-wal]==0} {error "Failed to create WAL file!"}
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sqlite3 db test.db -vfs shmfault
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} -sqlbody {
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SELECT count(*) FROM t1;
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}
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do_shmfault_test walfault-shm-4 -tclprep {
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sqlite3 db test.db -vfs shmfault
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unset -nocomplain ::shmfault_ioerr_countdown
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db eval {
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PRAGMA page_size = 512;
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PRAGMA journal_mode = WAL;
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PRAGMA wal_autocheckpoint = 0;
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CREATE TABLE t1(x);
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BEGIN;
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INSERT INTO t1 VALUES(randomblob(400)); /* 1 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 2 */
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INSERT INTO t1 SELECT randomblob(400) FROM t1; /* 4 */
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COMMIT;
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}
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set ::shmfault_ioerr_countdown 1
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set ::shmfault_ioerr_methods(xShmGet) 1
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db close
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unset ::shmfault_ioerr_methods(xShmGet)
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if {[file exists test.db-wal]==0} {error "Failed to create WAL file!"}
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sqlite3 db test.db -vfs shmfault
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} -sqlbody {
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SELECT count(*) FROM t1;
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}
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do_shmfault_test walfault-shm-5.1 -coverageonly 1 -sqlprep {
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PRAGMA cache_size = 10;
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PRAGMA journal_mode = WAL;
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CREATE TABLE abc(a PRIMARY KEY);
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INSERT INTO abc VALUES(randomblob(900));
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} -sqlbody {
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BEGIN;
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INSERT INTO abc SELECT randomblob(900) FROM abc; /* 1 */
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INSERT INTO abc SELECT randomblob(900) FROM abc; /* 2 */
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INSERT INTO abc SELECT randomblob(900) FROM abc; /* 4 */
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INSERT INTO abc SELECT randomblob(900) FROM abc; /* 8 */
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ROLLBACK;
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}
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do_shmfault_test walfault-shm-5.2 -coverageonly 1 -sqlprep {
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PRAGMA cache_size = 10;
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PRAGMA journal_mode = WAL;
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CREATE TABLE abc(a PRIMARY KEY);
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INSERT INTO abc VALUES(randomblob(900));
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} -sqlbody {
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BEGIN;
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INSERT INTO abc SELECT randomblob(900) FROM abc; /* 1 */
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SAVEPOINT spoint;
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INSERT INTO abc SELECT randomblob(900) FROM abc; /* 2 */
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INSERT INTO abc SELECT randomblob(900) FROM abc; /* 4 */
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INSERT INTO abc SELECT randomblob(900) FROM abc; /* 8 */
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ROLLBACK TO spoint;
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COMMIT;
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}
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#-------------------------------------------------------------------------
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# When a database is checkpointed, SQLite does the following:
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#
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# 1. xShmLock(CHECKPOINT) to lock the WAL.
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# 2. xShmGet(-1) to get a mapping to read the wal-index header.
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# 3. If the mapping obtained in (2) is not large enough to cover the
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# entire wal-index, call xShmGet(nReq) to get a larger mapping.
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# 4. Do the checkpoint.
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# 5. Release the lock and mapping.
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#
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# This test case tests the outcome of an IO error in step 2.
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#
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proc shmfault_vfs_cb_6 {method args} {
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switch -- $::shm_state {
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0 { return SQLITE_OK }
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1 {
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if {$method == "xShmGet"} {
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set ::wal_index [tvfs shm [lindex $args 0]]
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tvfs shm [lindex $args 0] [string range $::wal_index 0 65535]
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set ::shm_state 2
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}
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}
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2 {
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if {$method == "xShmGet"} {
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tvfs shm [lindex $args 0] $::wal_index
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return SQLITE_IOERR
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}
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}
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}
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return SQLITE_OK
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}
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do_test walfault-shm-6.1 {
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set ::shm_state 0
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testvfs tvfs shmfault_vfs_cb_6
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sqlite3 db test.db -vfs tvfs
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sqlite3 db2 test.db -vfs tvfs
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execsql {
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PRAGMA journal_mode = WAL;
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PRAGMA wal_autocheckpoint = 0;
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CREATE TABLE t1(x);
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INSERT INTO t1 VALUES(randomblob(900));
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}
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} {wal 0}
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do_test walfault-shm-6.2 {
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execsql {
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PRAGMA wal_autocheckpoint = 0;
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BEGIN;
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INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 2 */
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INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 4 */
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INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 8 */
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INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 16 */
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INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 32 */
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INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 64 */
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INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 128 */
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INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 256 */
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INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 512 */
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INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 1024 */
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INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 2048 */
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INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 4096 */
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INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 8192 */
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INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 16384 */
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COMMIT;
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} db2
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} {0}
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do_test walfault-shm-6.3 {
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set ::shm_state 1
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catchsql { PRAGMA wal_checkpoint } db2
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} {1 {disk I/O error}}
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set ::shm_state 0
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db close
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db2 close
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tvfs delete
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unset -nocomplain ::wal_index ::shm_state
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finish_test
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