258 lines
7.6 KiB
Plaintext
258 lines
7.6 KiB
Plaintext
# 2010 November 19
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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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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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set testprefix superlock
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# Test organization:
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#
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# 1.*: Test superlock on a rollback database. Test that once the db is
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# superlocked, it is not possible for a second client to read from
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# it.
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#
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# 2.*: Test superlock on a WAL database with zero frames in the WAL file.
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# Test that once the db is superlocked, it is not possible to read,
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# write or checkpoint the db.
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#
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# 3.*: As 2.*, for WAL databases with one or more frames in the WAL.
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#
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# 4.*: As 2.*, for WAL databases with one or more checkpointed frames
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# in the WAL.
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#
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# 5.*: Test that a call to sqlite3demo_superlock() uses the busy handler
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# correctly to wait for existing clients to clear on a WAL database.
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# And returns SQLITE_BUSY if no busy handler is defined or the busy
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# handler returns 0 before said clients relinquish their locks.
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#
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# 6.*: Test that if a superlocked WAL database is overwritten, existing
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# clients run the recovery to build the new wal-index after the
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# superlock is released.
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#
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#
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do_execsql_test 1.1 {
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CREATE TABLE t1(a, b);
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INSERT INTO t1 VALUES(1, 2);
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PRAGMA journal_mode = DELETE;
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} {delete}
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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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do_test 1.2 { sqlite3demo_superlock unlock test.db } {unlock}
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do_catchsql_test 1.3 { SELECT * FROM t1 } {1 {database is locked}}
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do_test 1.4 { unlock } {}
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do_execsql_test 2.1 {
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INSERT INTO t1 VALUES(3, 4);
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PRAGMA journal_mode = WAL;
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} {wal}
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do_test 2.2 { sqlite3demo_superlock unlock test.db } {unlock}
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do_catchsql_test 2.3 { SELECT * FROM t1 } {1 {database is locked}}
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do_catchsql_test 2.4 { INSERT INTO t1 VALUES(5, 6)} {1 {database is locked}}
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do_catchsql_test 2.5 { PRAGMA wal_checkpoint } {0 {1 -1 -1}}
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do_test 2.6 { unlock } {}
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do_execsql_test 3.1 { INSERT INTO t1 VALUES(3, 4) }
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do_test 3.2 { sqlite3demo_superlock unlock test.db } {unlock}
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do_catchsql_test 3.3 { SELECT * FROM t1 } {1 {database is locked}}
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do_catchsql_test 3.4 { INSERT INTO t1 VALUES(5, 6)} {1 {database is locked}}
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do_catchsql_test 3.5 { PRAGMA wal_checkpoint } {0 {1 -1 -1}}
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do_test 3.6 { unlock } {}
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# At this point the WAL file consists of a single frame only - written
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# by test case 3.1. If the ZERO_DAMAGE flag were not set, it would consist
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# of two frames - the frame written by 3.1 and a padding frame.
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do_execsql_test 4.1 { PRAGMA wal_checkpoint } {0 1 1}
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do_test 4.2 { sqlite3demo_superlock unlock test.db } {unlock}
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do_catchsql_test 4.3 { SELECT * FROM t1 } {1 {database is locked}}
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do_catchsql_test 4.4 { INSERT INTO t1 VALUES(5, 6)} {1 {database is locked}}
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do_catchsql_test 4.5 { PRAGMA wal_checkpoint } {0 {1 -1 -1}}
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do_test 4.6 { unlock } {}
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do_multiclient_test tn {
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proc busyhandler {x} {
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switch -- $x {
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1 { sql1 "COMMIT" }
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2 { sql2 "COMMIT" }
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3 { sql3 "COMMIT" }
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}
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lappend ::busylist $x
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return 1
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}
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set ::busylist [list]
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do_test 5.$tn.1 {
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sql1 {
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CREATE TABLE t1(a, b);
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PRAGMA journal_mode = WAL;
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INSERT INTO t1 VALUES(1, 2);
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}
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} {wal}
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do_test 5.$tn.2 {
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sql1 { BEGIN ; SELECT * FROM t1 }
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sql2 { BEGIN ; INSERT INTO t1 VALUES(3, 4) }
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sql3 { BEGIN ; SELECT * FROM t1 }
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} {1 2}
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do_test 5.$tn.3 {
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set ::busylist [list]
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sqlite3demo_superlock unlock test.db "" busyhandler
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set ::busylist
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} {0 1 2 3}
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do_test 5.$tn.4 { csql2 { SELECT * FROM t1 } } {1 {database is locked}}
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do_test 5.$tn.5 {
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csql3 { INSERT INTO t1 VALUES(5, 6) }
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} {1 {database is locked}}
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do_test 5.$tn.6 { csql1 "PRAGMA wal_checkpoint" } {0 {1 -1 -1}}
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do_test 5.$tn.7 { unlock } {}
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do_test 5.$tn.8 {
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sql1 { BEGIN ; SELECT * FROM t1 }
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sql2 { BEGIN ; INSERT INTO t1 VALUES(5, 6) }
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sql3 { BEGIN ; SELECT * FROM t1 }
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} {1 2 3 4}
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do_test 5.$tn.9 {
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list [catch {sqlite3demo_superlock unlock test.db} msg] $msg
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} {1 {database is locked}}
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do_test 5.$tn.10 {
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sql1 COMMIT
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list [catch {sqlite3demo_superlock unlock test.db} msg] $msg
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} {1 {database is locked}}
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do_test 5.$tn.11 {
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sql2 COMMIT
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list [catch {sqlite3demo_superlock unlock test.db} msg] $msg
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} {1 {database is locked}}
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do_test 5.$tn.12 {
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sql3 COMMIT
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list [catch {sqlite3demo_superlock unlock test.db} msg] $msg
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} {0 unlock}
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unlock
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do_test 5.$tn.13 { sql1 { SELECT * FROM t1 } } {1 2 3 4 5 6}
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do_test 5.$tn.14 { sql2 { SELECT * FROM t1 } } {1 2 3 4 5 6}
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do_test 5.$tn.15 { sqlite3demo_superlock unlock test.db } {unlock}
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do_test 5.$tn.16 { unlock } {}
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do_test 5.$tn.17 { sql2 { SELECT * FROM t1 } } {1 2 3 4 5 6}
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do_test 5.$tn.18 { sql1 { SELECT * FROM t1 } } {1 2 3 4 5 6}
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do_test 5.$tn.19 { sql2 { SELECT * FROM t1 } } {1 2 3 4 5 6}
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}
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proc read_content {file} {
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if {[file exists $file]==0} {return ""}
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set fd [open $file]
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fconfigure $fd -encoding binary -translation binary
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set content [read $fd]
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close $fd
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return $content
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}
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proc write_content {file content} {
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set fd [open $file w+]
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fconfigure $fd -encoding binary -translation binary
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puts -nonewline $fd $content
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close $fd
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}
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# Both $file1 and $file2 are database files. This function takes a
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# superlock on each, then exchanges the content of the two files (i.e.
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# overwrites $file1 with the initial contents of $file2, and overwrites
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# $file2 with the initial contents of $file1). The contents of any WAL
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# file is also exchanged.
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#
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proc db_swap {file1 file2} {
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sqlite3demo_superlock unlock1 $file1
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sqlite3demo_superlock unlock2 $file2
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set db1 [read_content $file1]
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set db2 [read_content $file2]
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write_content $file1 $db2
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write_content $file2 $db1
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set wal1 [read_content ${file1}-wal]
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set wal2 [read_content ${file2}-wal]
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write_content ${file1}-wal $wal2
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write_content ${file2}-wal $wal1
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unlock1
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unlock2
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}
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forcedelete test.db
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sqlite3 db test.db
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do_execsql_test 6.1 {
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ATTACH 'test.db2' AS aux;
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PRAGMA aux.journal_mode = wal;
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CREATE TABLE aux.t2(x, y);
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INSERT INTO aux.t2 VALUES('a', 'b');
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PRAGMA schema_version = 450;
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DETACH aux;
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PRAGMA main.journal_mode = wal;
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CREATE TABLE t1(a, b);
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INSERT INTO t1 VALUES(1, 2);
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INSERT INTO t1 VALUES(3, 4);
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SELECT * FROM t1;
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} {wal wal 1 2 3 4}
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db_swap test.db2 test.db
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do_catchsql_test 6.2 { SELECT * FROM t1 } {1 {no such table: t1}}
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do_catchsql_test 6.3 { SELECT * FROM t2 } {0 {a b}}
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db_swap test.db2 test.db
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do_catchsql_test 6.4 { SELECT * FROM t1 } {0 {1 2 3 4}}
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do_catchsql_test 6.5 { SELECT * FROM t2 } {1 {no such table: t2}}
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do_execsql_test 6.6 { PRAGMA wal_checkpoint } {0 0 0}
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db_swap test.db2 test.db
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do_catchsql_test 6.7 { SELECT * FROM t1 } {1 {no such table: t1}}
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do_catchsql_test 6.8 { SELECT * FROM t2 } {0 {a b}}
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db_swap test.db2 test.db
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do_catchsql_test 6.9 { SELECT * FROM t1 } {0 {1 2 3 4}}
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do_catchsql_test 6.10 { SELECT * FROM t2 } {1 {no such table: t2}}
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do_execsql_test 6.11 {
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PRAGMA journal_mode = delete;
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PRAGMA page_size = 512;
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VACUUM;
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PRAGMA journal_mode = wal;
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INSERT INTO t1 VALUES(5, 6);
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} {delete wal}
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db_swap test.db2 test.db
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do_catchsql_test 6.12 { SELECT * FROM t1 } {1 {no such table: t1}}
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do_catchsql_test 6.13 { SELECT * FROM t2 } {0 {a b}}
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db_swap test.db2 test.db
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do_catchsql_test 6.14 { SELECT * FROM t1 } {0 {1 2 3 4 5 6}}
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do_catchsql_test 6.15 { SELECT * FROM t2 } {1 {no such table: t2}}
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finish_test
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