d6b44ec32a
([00ec95fcd02bb415|check-in 00ec95fcd02bb415]) so that it works for the case of 64K page size. FossilOrigin-Name: f426874e005e3c23e8a00083b7c201408e072bca413e52bfc436da6483afb0cd
412 lines
11 KiB
Plaintext
412 lines
11 KiB
Plaintext
# 2011 May 09
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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 contains tests for using WAL databases in read-only 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/lock_common.tcl
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source $testdir/wal_common.tcl
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set ::testprefix walro2
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# And only if the build is WAL-capable.
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#
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ifcapable !wal {
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finish_test
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return
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}
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proc copy_to_test2 {bZeroShm} {
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forcecopy test.db test.db2
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forcecopy test.db-wal test.db2-wal
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if {$bZeroShm} {
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forcedelete test.db2-shm
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set fd [open test.db2-shm w]
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seek $fd [expr [file size test.db-shm]-1]
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puts -nonewline $fd "\0"
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close $fd
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} else {
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forcecopy test.db-shm test.db2-shm
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}
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}
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# Most systems allocate the *-shm file in 32KB trunks. But on UNIX systems
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# for which the getpagesize() call returns greater than 32K, the *-shm
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# file is allocated in page-sized units (since you cannot mmap part of
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# a page). The following code sets variable $MINSHMSZ to the smallest
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# possible *-shm file (i.e. the greater of 32KB and the system page-size).
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#
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do_execsql_test 0.0 {
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PRAGMA journal_mode = wal;
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CREATE TABLE t1(x);
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} {wal}
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set MINSHMSZ [file size test.db-shm]
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set dfltpgsz [db one {PRAGMA page_size}]
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foreach bZeroShm {0 1} {
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for {set pgsz 512} {$pgsz<=65536} {set pgsz [expr {$pgsz*2}]} {
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set TN [expr $bZeroShm+1]-$pgsz
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do_multiclient_test tn {
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# Close all connections and delete the database.
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#
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code1 { db close }
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code2 { db2 close }
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code3 { db3 close }
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forcedelete test.db
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# Do not run tests with the connections in the same process.
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#
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if {$tn==2} continue
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foreach c {code1 code2 code3} {
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$c {
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sqlite3_shutdown
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sqlite3_config_uri 1
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}
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}
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do_test $TN.1.1 {
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code2 { sqlite3 db2 test.db }
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sql2 "PRAGMA page_size=$::pgsz"
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sql2 {
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CREATE TABLE t1(x, y);
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PRAGMA journal_mode = WAL;
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INSERT INTO t1 VALUES('a', 'b');
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INSERT INTO t1 VALUES('c', 'd');
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}
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file exists test.db-shm
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} {1}
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do_test $TN.1.2.1 {
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copy_to_test2 $bZeroShm
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code1 {
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sqlite3 db file:test.db2?readonly_shm=1
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}
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sql1 { SELECT * FROM t1 }
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} {a b c d}
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do_test $TN.1.2.2 {
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sql1 { SELECT * FROM t1 }
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} {a b c d}
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do_test $TN.1.3.1 {
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code3 { sqlite3 db3 test.db2 }
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sql3 { SELECT * FROM t1 }
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} {a b c d}
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do_test $TN.1.3.2 {
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sql1 { SELECT * FROM t1 }
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} {a b c d}
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code1 { db close }
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code2 { db2 close }
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code3 { db3 close }
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do_test $TN.2.1 {
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code2 { sqlite3 db2 test.db }
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sql2 "PRAGMA page_size=$::pgsz;"
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sql2 {
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INSERT INTO t1 VALUES('e', 'f');
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INSERT INTO t1 VALUES('g', 'h');
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}
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file exists test.db-shm
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} {1}
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do_test $TN.2.2 {
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copy_to_test2 $bZeroShm
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code1 {
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sqlite3 db file:test.db2?readonly_shm=1
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}
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sql1 {
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BEGIN;
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SELECT * FROM t1;
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}
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} {a b c d e f g h}
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do_test $TN.2.3.1 {
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code3 { sqlite3 db3 test.db2 }
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sql3 { SELECT * FROM t1 }
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} {a b c d e f g h}
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do_test $TN.2.3.2 {
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sql3 { INSERT INTO t1 VALUES('i', 'j') }
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code3 { db3 close }
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sql1 { COMMIT }
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} {}
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do_test $TN.2.3.3 {
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sql1 { SELECT * FROM t1 }
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} {a b c d e f g h i j}
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#-----------------------------------------------------------------------
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# 3.1.*: That a readonly_shm connection can read a database file if both
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# the *-wal and *-shm files are zero bytes in size.
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#
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# 3.2.*: That it flushes the cache if, between transactions on a db with a
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# zero byte *-wal file, some other connection modifies the db, then
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# does "PRAGMA wal_checkpoint=truncate" to truncate the wal file
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# back to zero bytes in size.
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#
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# 3.3.*: That, if between transactions some other process wraps the wal
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# file, the readonly_shm client reruns recovery.
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#
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catch { code1 { db close } }
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catch { code2 { db2 close } }
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catch { code3 { db3 close } }
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do_test $TN.3.1.0 {
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list [file exists test.db-wal] [file exists test.db-shm]
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} {0 0}
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do_test $TN.3.1.1 {
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close [open test.db-wal w]
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close [open test.db-shm w]
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code1 {
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sqlite3 db file:test.db?readonly_shm=1
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}
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sql1 { SELECT * FROM t1 }
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} {a b c d e f g h}
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do_test $TN.3.2.0 {
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list [file size test.db-wal] [file size test.db-shm]
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} {0 0}
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do_test $TN.3.2.1 {
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code2 { sqlite3 db2 test.db }
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sql2 { INSERT INTO t1 VALUES(1, 2) ; PRAGMA wal_checkpoint=truncate }
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code2 { db2 close }
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sql1 { SELECT * FROM t1 }
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} {a b c d e f g h 1 2}
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if {$pgsz!=$dfltpgsz} continue
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do_test $TN.3.2.2 {
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list [file size test.db-wal] [file size test.db-shm]
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} [list 0 $MINSHMSZ]
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do_test $TN.3.3.0 {
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code2 { sqlite3 db2 test.db }
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sql2 {
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INSERT INTO t1 VALUES(3, 4);
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INSERT INTO t1 VALUES(5, 6);
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INSERT INTO t1 VALUES(7, 8);
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INSERT INTO t1 VALUES(9, 10);
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}
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code2 { db2 close }
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code1 { db close }
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list [file size test.db-wal] [file size test.db-shm]
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} [list [wal_file_size 4 1024] $MINSHMSZ]
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do_test $TN.3.3.1 {
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code1 { sqlite3 db file:test.db?readonly_shm=1 }
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sql1 { SELECT * FROM t1 }
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} {a b c d e f g h 1 2 3 4 5 6 7 8 9 10}
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do_test $TN.3.3.2 {
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code2 { sqlite3 db2 test.db }
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sql2 {
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PRAGMA wal_checkpoint;
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DELETE FROM t1;
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INSERT INTO t1 VALUES('i', 'ii');
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}
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code2 { db2 close }
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list [file size test.db-wal] [file size test.db-shm]
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} [list [wal_file_size 4 1024] $MINSHMSZ]
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do_test $TN.3.3.3 {
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sql1 { SELECT * FROM t1 }
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} {i ii}
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#-----------------------------------------------------------------------
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#
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#
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catch { code1 { db close } }
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catch { code2 { db2 close } }
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catch { code3 { db3 close } }
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do_test $TN.4.0 {
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code1 { forcedelete test.db }
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code1 { sqlite3 db test.db }
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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 VALUES('hello');
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INSERT INTO t1 VALUES('world');
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}
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copy_to_test2 $bZeroShm
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code1 { db close }
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} {}
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do_test $TN.4.1.1 {
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code2 { sqlite3 db2 file:test.db2?readonly_shm=1 }
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sql2 { SELECT * FROM t1 }
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} {hello world}
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do_test $TN.4.1.2 {
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code3 { sqlite3 db3 test.db2 }
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sql3 {
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INSERT INTO t1 VALUES('!');
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PRAGMA wal_checkpoint = truncate;
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}
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code3 { db3 close }
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} {}
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do_test $TN.4.1.3 {
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sql2 { SELECT * FROM t1 }
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} {hello world !}
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catch { code1 { db close } }
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catch { code2 { db2 close } }
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catch { code3 { db3 close } }
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do_test $TN.4.2.1 {
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code1 { sqlite3 db test.db }
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sql1 {
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INSERT INTO t1 VALUES('!');
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INSERT INTO t1 VALUES('!');
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PRAGMA cache_size = 10;
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CREATE TABLE t2(x);
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BEGIN;
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WITH s(i) AS (
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SELECT 1 UNION ALL SELECT i+1 FROM s WHERE i<500
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)
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INSERT INTO t2 SELECT randomblob(500) FROM s;
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SELECT count(*) FROM t2;
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}
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} {500}
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set sz [file size test.db-wal]
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do_test $TN.4.2.2.(sz=$sz) {
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expr {$sz>400000}
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} {1}
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do_test $TN.4.2.4 {
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file_control_persist_wal db 1; db close
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copy_to_test2 $bZeroShm
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code2 { sqlite3 db2 file:test.db2?readonly_shm=1 }
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sql2 {
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SELECT * FROM t1;
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SELECT count(*) FROM t2;
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}
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} {hello world ! ! 0}
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#-----------------------------------------------------------------------
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#
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#
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catch { code1 { db close } }
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catch { code2 { db2 close } }
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catch { code3 { db3 close } }
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do_test $TN.5.0 {
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code1 { forcedelete test.db }
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code1 { sqlite3 db test.db }
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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 VALUES('hello');
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INSERT INTO t1 VALUES('world');
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INSERT INTO t1 VALUES('!');
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INSERT INTO t1 VALUES('world');
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INSERT INTO t1 VALUES('hello');
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}
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copy_to_test2 $bZeroShm
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code1 { db close }
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} {}
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do_test $TN.5.1 {
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code2 { sqlite3 db2 file:test.db2?readonly_shm=1 }
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sql2 {
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SELECT * FROM t1;
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}
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} {hello world ! world hello}
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do_test $TN.5.2 {
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code1 {
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proc handle_read {op args} {
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if {$op=="xRead" && [file tail [lindex $args 0]]=="test.db2-wal"} {
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set ::res2 [sql2 { SELECT * FROM t1 }]
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}
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puts "$msg xRead $args"
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return "SQLITE_OK"
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}
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testvfs tvfs -fullshm 1
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sqlite3 db file:test.db2?vfs=tvfs
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db eval { SELECT * FROM sqlite_master }
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tvfs filter xRead
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tvfs script handle_read
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}
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sql1 {
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PRAGMA wal_checkpoint = truncate;
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}
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code1 { set ::res2 }
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} {hello world ! world hello}
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do_test $TN.5.3 {
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code1 { db close }
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code1 { tvfs delete }
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} {}
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#-----------------------------------------------------------------------
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#
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#
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catch { code1 { db close } }
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catch { code2 { db2 close } }
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catch { code3 { db3 close } }
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do_test $TN.6.1 {
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code1 { forcedelete test.db }
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code1 { sqlite3 db test.db }
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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 VALUES('hello');
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INSERT INTO t1 VALUES('world');
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INSERT INTO t1 VALUES('!');
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INSERT INTO t1 VALUES('world');
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INSERT INTO t1 VALUES('hello');
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}
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copy_to_test2 $bZeroShm
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code1 { db close }
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} {}
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do_test $TN.6.2 {
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code1 {
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set ::nRem 5
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proc handle_read {op args} {
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if {$op=="xRead" && [file tail [lindex $args 0]]=="test.db2-wal"} {
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incr ::nRem -1
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if {$::nRem==0} {
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code2 { sqlite3 db2 test.db2 }
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sql2 { PRAGMA wal_checkpoint = truncate }
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}
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}
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return "SQLITE_OK"
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}
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testvfs tvfs -fullshm 1
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tvfs filter xRead
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tvfs script handle_read
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sqlite3 db file:test.db2?readonly_shm=1&vfs=tvfs
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db eval { SELECT * FROM t1 }
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}
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} {hello world ! world hello}
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do_test $TN.6.3 {
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code1 { db close }
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code1 { tvfs delete }
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} {}
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}
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} ;# for pgsz
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} ;# foreach bZeroShm
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finish_test
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