83 lines
2.1 KiB
Plaintext
83 lines
2.1 KiB
Plaintext
# 2009 July 2
|
|
#
|
|
# The author disclaims copyright to this source code. In place of
|
|
# a legal notice, here is a blessing:
|
|
#
|
|
# May you do good and not evil.
|
|
# May you find forgiveness for yourself and forgive others.
|
|
# May you share freely, never taking more than you give.
|
|
#
|
|
#***********************************************************************
|
|
#
|
|
# $Id: sharedlock.test,v 1.1 2009/07/02 17:21:58 danielk1977 Exp $
|
|
|
|
set testdir [file dirname $argv0]
|
|
source $testdir/tester.tcl
|
|
set testprefix sharedlock
|
|
db close
|
|
|
|
ifcapable !shared_cache {
|
|
finish_test
|
|
return
|
|
}
|
|
|
|
set ::enable_shared_cache [sqlite3_enable_shared_cache 1]
|
|
sqlite3 db test.db
|
|
sqlite3 db2 test.db
|
|
|
|
do_test sharedlock-1.1 {
|
|
execsql {
|
|
CREATE TABLE t1(a, b);
|
|
INSERT INTO t1 VALUES(1, 'one');
|
|
INSERT INTO t1 VALUES(2, 'two');
|
|
}
|
|
} {}
|
|
|
|
do_test sharedlock-1.2 {
|
|
set res [list]
|
|
db eval { SELECT * FROM t1 ORDER BY rowid } {
|
|
lappend res $a $b
|
|
if {$a == 1} { catch { db eval "INSERT INTO t1 VALUES(3, 'three')" } }
|
|
|
|
# This should fail. Connection [db] has a read-lock on t1, which should
|
|
# prevent connection [db2] from obtaining the write-lock it needs to
|
|
# modify t1. At one point there was a bug causing the previous INSERT
|
|
# to drop the read-lock belonging to [db].
|
|
if {$a == 2} { catch { db2 eval "INSERT INTO t1 VALUES(4, 'four')" } }
|
|
}
|
|
set res
|
|
} {1 one 2 two 3 three}
|
|
|
|
|
|
#-------------------------------------------------------------------------
|
|
# Test that a write-lock is taken on a table when its entire contents
|
|
# are deleted using the OP_Clear optimization.
|
|
#
|
|
foreach {tn delete_sql} {
|
|
1 { DELETE FROM t2 WHERE 1 }
|
|
2 { DELETE FROM t2 }
|
|
} {
|
|
do_execsql_test 2.1 {
|
|
DROP TABLE IF EXISTS t2;
|
|
CREATE TABLE t2(x, y);
|
|
INSERT INTO t2 VALUES(1, 2);
|
|
INSERT INTO t2 VALUES(3, 4);
|
|
}
|
|
|
|
do_test 2.2 { execsql { SELECT * FROM t2 } db2 } {1 2 3 4}
|
|
|
|
do_execsql_test 2.3 " BEGIN; $delete_sql; "
|
|
|
|
do_test 2.4 {
|
|
catchsql { SELECT * FROM t2 } db2
|
|
} {1 {database table is locked: t2}}
|
|
|
|
do_execsql_test 2.5 COMMIT
|
|
}
|
|
|
|
|
|
db close
|
|
db2 close
|
|
sqlite3_enable_shared_cache $::enable_shared_cache
|
|
finish_test
|