# Copyright (c) 1999, 2000 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
#
# Author contact information:
# drh@hwaci.com
# http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library. The
# focus of this script is database locks.
#
# $Id: lock.test,v 1.4 2000/10/19 14:10:09 drh Exp $
if {$dbprefix=="gdbm:"} {
set testdir [file dirname $argv0]
source $testdir/tester.tcl
# Create a largish table
#
do_test lock-1.0 {
execsql {CREATE TABLE big(f1 int, f2 int, f3 int)}
set f [open ./testdata1.txt w]
for {set i 1} {$i<=500} {incr i} {
puts $f "$i\t[expr {$i*2}]\t[expr {$i*3}]"
}
close $f
execsql {COPY big FROM './testdata1.txt'}
file delete -force ./testdata1.txt
} {}
do_test lock-1.1 {
# Create a background query that gives us a read lock on the big table
#
set f [open slow.sql w]
puts $f "SELECT a.f1, b.f1 FROM big AS a, big AS B"
puts $f "WHERE a.f1+b.f1==0.5;"
close $f
set ::lock_pid [exec ./sqlite testdb <slow.sql &]
after 250
set v {}
} {}
do_test lock-1.2 {
# Now try to update the database
#
set v [catch {execsql {UPDATE big SET f2='xyz' WHERE f1=11}} msg]
lappend v $msg
} {5 {table big is locked}}
do_test lock-1.3 {
# Try to update the database in a separate process
#
set f [open update.sql w]
puts $f ".timeout 0"
puts $f "UPDATE big SET f2='xyz' WHERE f1=11;"
puts $f "SELECT f2 FROM big WHERE f1=11;"
close $f
exec ./sqlite testdb <update.sql
} "SQL error: table big is locked\n22"
do_test lock-1.4 {
# Try to update the database using a timeout
#
set f [open update.sql w]
puts $f ".timeout 1000"
puts $f "UPDATE big SET f2='xyz' WHERE f1=11;"
puts $f "SELECT f2 FROM big WHERE f1=11;"
close $f
exec ./sqlite testdb <update.sql
} "SQL error: table big is locked\n22"
do_test lock-1.5 {
# Try to update the database using a timeout
#
set f [open update.sql w]
puts $f ".timeout 10000"
puts $f "UPDATE big SET f2='xyz' WHERE f1=11;"
puts $f "SELECT f2 FROM big WHERE f1=11;"
close $f
exec ./sqlite testdb <update.sql
} {xyz}
catch {exec ps -uax | grep $::lock_pid}
catch {exec kill -HUP $::lock_pid}
catch {exec kill -9 $::lock_pid}
finish_test
}