drh
93 lines
2.4 KiB
Plaintext
93 lines
2.4 KiB
Plaintext
# 2001 September 15
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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 script is database locks.
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#
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# $Id: lock.test,v 1.10 2001/09/16 00:13:28 drh Exp $
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if {0} {
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# Create a largish table
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#
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do_test lock-1.0 {
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execsql {CREATE TABLE big(f1 int, f2 int, f3 int)}
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set f [open ./testdata1.txt w]
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for {set i 1} {$i<=500} {incr i} {
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puts $f "$i\t[expr {$i*2}]\t[expr {$i*3}]"
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}
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close $f
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execsql {COPY big FROM './testdata1.txt'}
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file delete -force ./testdata1.txt
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} {}
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do_test lock-1.1 {
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# Create a background query that gives us a read lock on the big table
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#
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set f [open slow.sql w]
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puts $f "SELECT a.f1, b.f1 FROM big AS a, big AS B"
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puts $f "WHERE a.f1+b.f1==0.5;"
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close $f
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set ::lock_pid [exec ./sqlite testdb <slow.sql &]
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after 250
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set v {}
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} {}
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do_probtest lock-1.2 {
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# Now try to update the database
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#
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set v [catch {execsql {UPDATE big SET f2='xyz' WHERE f1=11}} msg]
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lappend v $msg
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} {1 {table big is locked}}
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do_probtest lock-1.3 {
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# Try to update the database in a separate process
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#
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set f [open update.sql w]
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puts $f ".timeout 0"
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puts $f "UPDATE big SET f2='xyz' WHERE f1=11;"
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puts $f "SELECT f2 FROM big WHERE f1=11;"
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close $f
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exec ./sqlite testdb <update.sql
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} "UPDATE big SET f2='xyz' WHERE f1=11;\nSQL error: table big is locked\n22"
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do_probtest lock-1.4 {
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# Try to update the database using a timeout
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#
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set f [open update.sql w]
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puts $f ".timeout 1000"
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puts $f "UPDATE big SET f2='xyz' WHERE f1=11;"
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puts $f "SELECT f2 FROM big WHERE f1=11;"
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close $f
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exec ./sqlite testdb <update.sql
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} "UPDATE big SET f2='xyz' WHERE f1=11;\nSQL error: table big is locked\n22"
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do_probtest lock-1.5 {
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# Try to update the database using a timeout
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#
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set f [open update.sql w]
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puts $f ".timeout 10000"
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puts $f "UPDATE big SET f2='xyz' WHERE f1=11;"
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puts $f "SELECT f2 FROM big WHERE f1=11;"
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close $f
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exec ./sqlite testdb <update.sql
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} {xyz}
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catch {exec ps -uax | grep $::lock_pid}
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catch {exec kill -HUP $::lock_pid}
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catch {exec kill -9 $::lock_pid}
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finish_test
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}
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