mirror of
https://github.com/tursodatabase/libsql.git
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232 lines
6.3 KiB
Plaintext
232 lines
6.3 KiB
Plaintext
# 2010 March 17
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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. The tests in this file use
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# brute force methods, so may take a while to run.
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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/wal_common.tcl
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source $testdir/lock_common.tcl
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ifcapable !wal {finish_test ; return }
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set testprefix walslow
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proc reopen_db {} {
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catch { db close }
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forcedelete test.db test.db-wal
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sqlite3 db test.db
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execsql { PRAGMA journal_mode = wal }
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}
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db close
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save_prng_state
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for {set seed 1} {$seed<10} {incr seed} {
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expr srand($seed)
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restore_prng_state
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reopen_db
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do_test walslow-1.seed=$seed.0 {
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execsql { CREATE TABLE t1(a, b) }
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execsql { CREATE INDEX i1 ON t1(a) }
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execsql { CREATE INDEX i2 ON t1(b) }
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} {}
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for {set iTest 1} {$iTest < 100} {incr iTest} {
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do_test walslow-1.seed=$seed.$iTest.1 {
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set w [expr int(rand()*2000)]
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set x [expr int(rand()*2000)]
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execsql { INSERT INTO t1 VALUES(randomblob($w), randomblob($x)) }
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execsql { PRAGMA integrity_check }
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} {ok}
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do_test walslow-1.seed=$seed.$iTest.2 {
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execsql "PRAGMA wal_checkpoint;"
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execsql { PRAGMA integrity_check }
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} {ok}
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do_test walslow-1.seed=$seed.$iTest.3 {
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forcedelete testX.db testX.db-wal
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copy_file test.db testX.db
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copy_file test.db-wal testX.db-wal
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sqlite3 db2 testX.db
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execsql { PRAGMA journal_mode = WAL } db2
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execsql { PRAGMA integrity_check } db2
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} {ok}
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do_test walslow-1.seed=$seed.$iTest.4 {
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execsql { SELECT count(*) FROM t1 WHERE a!=b } db2
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} [execsql { SELECT count(*) FROM t1 WHERE a!=b }]
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db2 close
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}
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}
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#-------------------------------------------------------------------------
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# Test case walslow-3.* tests that the checksum calculation detects single
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# byte changes to frame or frame-header data and considers the frame
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# invalid as a result.
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#
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reset_db
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do_test 3.1 {
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execsql {
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PRAGMA synchronous = NORMAL;
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PRAGMA page_size = 1024;
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CREATE TABLE t1(a, b);
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INSERT INTO t1 VALUES(1, randomblob(300));
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INSERT INTO t1 VALUES(2, randomblob(300));
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PRAGMA journal_mode = WAL;
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INSERT INTO t1 VALUES(3, randomblob(300));
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}
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file size test.db-wal
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} [wal_file_size 1 1024]
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do_test 3.2 {
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forcecopy test.db-wal test2.db-wal
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forcecopy test.db test2.db
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sqlite3 db2 test2.db
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execsql { SELECT a FROM t1 } db2
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} {1 2 3}
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db2 close
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forcecopy test.db test2.db
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foreach incr {1 2 3 20 40 60 80 100 120 140 160 180 200 220 240 253 254 255} {
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do_test 3.3.$incr {
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set FAIL 0
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for {set iOff 0} {$iOff < [wal_file_size 1 1024]} {incr iOff} {
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forcecopy test.db-wal test2.db-wal
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set fd [open test2.db-wal r+]
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fconfigure $fd -encoding binary
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fconfigure $fd -translation binary
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seek $fd $iOff
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binary scan [read $fd 1] c x
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seek $fd $iOff
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puts -nonewline $fd [binary format c [expr {($x+$incr)&0xFF}]]
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close $fd
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sqlite3 db2 test2.db
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if { [execsql { SELECT a FROM t1 } db2] != "1 2" } {set FAIL 1}
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db2 close
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}
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set FAIL
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} {0}
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}
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#-------------------------------------------------------------------------
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# Test large log summaries.
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#
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# In this case "large" usually means a log file that requires a wal-index
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# mapping larger than 64KB (the default initial allocation). A 64KB wal-index
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# is large enough for a log file that contains approximately 13100 frames.
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# So the following tests create logs containing at least this many frames.
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#
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# 4.1.*: This test case creates a very large log file within the
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# file-system (around 200MB). The log file does not contain
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# any valid frames. Test that the database file can still be
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# opened and queried, and that the invalid log file causes no
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# problems.
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#
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# 4.2.*: Test that a process may create a large log file and query
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# the database (including the log file that it itself created).
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#
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# 4.3.*: Test that if a very large log file is created, and then a
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# second connection is opened on the database file, it is possible
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# to query the database (and the very large log) using the
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# second connection.
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#
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# 4.4.*: Same test as wal-13.3.*. Except in this case the second
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# connection is opened by an external process.
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#
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set ::blobcnt 0
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proc blob {nByte} {
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incr ::blobcnt
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return [string range [string repeat "${::blobcnt}x" $nByte] 1 $nByte]
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}
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reset_db
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do_execsql_test 4.1 {
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PRAGMA journal_mode = wal;
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CREATE TABLE t1(x, y);
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INSERT INTO "t1" VALUES('A',0);
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CREATE TABLE t2(x, y);
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INSERT INTO "t2" VALUES('B',2);
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} {wal}
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db close
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do_test 4.1.1 {
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list [file exists test.db] [file exists test.db-wal]
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} {1 0}
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do_test 4.1.2 {
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set fd [open test.db-wal w]
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seek $fd [expr 200*1024*1024]
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puts $fd ""
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close $fd
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sqlite3 db test.db
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execsql { SELECT * FROM t2 }
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} {B 2}
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do_test 4.1.3 {
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db close
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file exists test.db-wal
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} {0}
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do_test 4.2.1 {
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sqlite3 db test.db
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execsql { SELECT count(*) FROM t2 }
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} {1}
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do_test 4.2.2 {
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db function blob blob
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for {set i 0} {$i < 16} {incr i} {
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execsql { INSERT INTO t2 SELECT blob(400), blob(400) FROM t2 }
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}
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execsql { SELECT count(*) FROM t2 }
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} [expr int(pow(2, 16))]
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do_test 4.2.3 {
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expr [file size test.db-wal] > [wal_file_size 33000 1024]
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} 1
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do_multiclient_test tn {
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incr tn 2
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do_test 4.$tn.0 {
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sql1 {
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PRAGMA journal_mode = WAL;
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CREATE TABLE t1(x);
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INSERT INTO t1 SELECT randomblob(800);
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}
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sql1 { SELECT count(*) FROM t1 }
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} {1}
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for {set ii 1} {$ii<16} {incr ii} {
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do_test 4.$tn.$ii.a {
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sql2 { INSERT INTO t1 SELECT randomblob(800) FROM t1 }
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sql2 { SELECT count(*) FROM t1 }
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} [expr (1<<$ii)]
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do_test 4.$tn.$ii.b {
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sql1 { SELECT count(*) FROM t1 }
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} [expr (1<<$ii)]
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do_test 4.$tn.$ii.c {
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sql1 { SELECT count(*) FROM t1 }
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} [expr (1<<$ii)]
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do_test 4.$tn.$ii.d {
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sql1 { PRAGMA integrity_check }
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} {ok}
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}
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}
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finish_test
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