355 lines
8.4 KiB
Plaintext
355 lines
8.4 KiB
Plaintext
# 2001 September 15
|
|
#
|
|
# 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.
|
|
#
|
|
#***********************************************************************
|
|
# This file implements regression tests for SQLite library. The
|
|
# focus of this script is database locks.
|
|
#
|
|
# $Id: lock.test,v 1.24 2004/06/12 01:43:27 danielk1977 Exp $
|
|
|
|
|
|
set testdir [file dirname $argv0]
|
|
source $testdir/tester.tcl
|
|
|
|
# Create an alternative connection to the database
|
|
#
|
|
do_test lock-1.0 {
|
|
sqlite db2 ./test.db
|
|
set dummy {}
|
|
} {}
|
|
do_test lock-1.1 {
|
|
execsql {SELECT name FROM sqlite_master WHERE type='table' ORDER BY name}
|
|
} {}
|
|
do_test lock-1.2 {
|
|
execsql {SELECT name FROM sqlite_master WHERE type='table' ORDER BY name} db2
|
|
} {}
|
|
do_test lock-1.3 {
|
|
execsql {CREATE TABLE t1(a int, b int)}
|
|
execsql {SELECT name FROM sqlite_master WHERE type='table' ORDER BY name}
|
|
} {t1}
|
|
do_test lock-1.5 {
|
|
catchsql {
|
|
SELECT name FROM sqlite_master WHERE type='table' ORDER BY name
|
|
} db2
|
|
} {0 t1}
|
|
|
|
do_test lock-1.6 {
|
|
execsql {INSERT INTO t1 VALUES(1,2)}
|
|
execsql {SELECT * FROM t1}
|
|
} {1 2}
|
|
do_test lock-1.7.1 {
|
|
catchsql {SELECT * FROM t1} db2
|
|
} {1 {no such table: t1}}
|
|
do_test lock-1.7.2 {
|
|
catchsql {SELECT * FROM t1} db2
|
|
} {0 {1 2}}
|
|
do_test lock-1.8 {
|
|
execsql {UPDATE t1 SET a=b, b=a} db2
|
|
execsql {SELECT * FROM t1} db2
|
|
} {2 1}
|
|
do_test lock-1.9 {
|
|
execsql {SELECT * FROM t1}
|
|
} {2 1}
|
|
do_test lock-1.10 {
|
|
execsql {BEGIN TRANSACTION}
|
|
execsql {UPDATE t1 SET a = 0 WHERE 0}
|
|
execsql {SELECT * FROM t1}
|
|
} {2 1}
|
|
do_test lock-1.11 {
|
|
catchsql {SELECT * FROM t1} db2
|
|
} {0 {2 1}}
|
|
do_test lock-1.12 {
|
|
execsql {ROLLBACK}
|
|
catchsql {SELECT * FROM t1}
|
|
} {0 {2 1}}
|
|
|
|
do_test lock-1.13 {
|
|
execsql {CREATE TABLE t2(x int, y int)}
|
|
execsql {INSERT INTO t2 VALUES(8,9)}
|
|
execsql {SELECT * FROM t2}
|
|
} {8 9}
|
|
do_test lock-1.14.1 {
|
|
catchsql {SELECT * FROM t2} db2
|
|
} {1 {no such table: t2}}
|
|
do_test lock-1.14.2 {
|
|
catchsql {SELECT * FROM t1} db2
|
|
} {0 {2 1}}
|
|
do_test lock-1.15 {
|
|
catchsql {SELECT * FROM t2} db2
|
|
} {0 {8 9}}
|
|
|
|
do_test lock-1.16 {
|
|
db eval {SELECT * FROM t1} qv {
|
|
set x [db eval {SELECT * FROM t1}]
|
|
}
|
|
set x
|
|
} {2 1}
|
|
do_test lock-1.17 {
|
|
db eval {SELECT * FROM t1} qv {
|
|
set x [db eval {SELECT * FROM t2}]
|
|
}
|
|
set x
|
|
} {8 9}
|
|
|
|
# You cannot UPDATE a table from within the callback of a SELECT
|
|
# on that same table because the SELECT has the table locked.
|
|
#
|
|
do_test lock-1.18 {
|
|
db eval {SELECT * FROM t1} qv {
|
|
set r [catch {db eval {UPDATE t1 SET a=b, b=a}} msg]
|
|
lappend r $msg
|
|
}
|
|
set r
|
|
} {1 {database table is locked}}
|
|
|
|
# But you can UPDATE a different table from the one that is used in
|
|
# the SELECT.
|
|
#
|
|
do_test lock-1.19 {
|
|
db eval {SELECT * FROM t1} qv {
|
|
set r [catch {db eval {UPDATE t2 SET x=y, y=x}} msg]
|
|
lappend r $msg
|
|
}
|
|
set r
|
|
} {0 {}}
|
|
do_test lock-1.20 {
|
|
execsql {SELECT * FROM t2}
|
|
} {9 8}
|
|
|
|
# It is possible to do a SELECT of the same table within the
|
|
# callback of another SELECT on that same table because two
|
|
# or more read-only cursors can be open at once.
|
|
#
|
|
do_test lock-1.21 {
|
|
db eval {SELECT * FROM t1} qv {
|
|
set r [catch {db eval {SELECT a FROM t1}} msg]
|
|
lappend r $msg
|
|
}
|
|
set r
|
|
} {0 2}
|
|
|
|
# Under UNIX you can do two SELECTs at once with different database
|
|
# connections, because UNIX supports reader/writer locks. Under windows,
|
|
# this is not possible.
|
|
#
|
|
if {$::tcl_platform(platform)=="unix"} {
|
|
do_test lock-1.22 {
|
|
db eval {SELECT * FROM t1} qv {
|
|
set r [catch {db2 eval {SELECT a FROM t1}} msg]
|
|
lappend r $msg
|
|
}
|
|
set r
|
|
} {0 2}
|
|
}
|
|
integrity_check lock-1.23
|
|
|
|
# If one thread has a transaction another thread cannot start
|
|
# a transaction. -> Not true in version 3.0. But if one thread
|
|
# as a RESERVED lock another thread cannot acquire one.
|
|
#
|
|
do_test lock-2.1 {
|
|
execsql {BEGIN TRANSACTION}
|
|
execsql {UPDATE t1 SET a = 0 WHERE 0}
|
|
execsql {BEGIN TRANSACTION} db2
|
|
set r [catch {execsql {UPDATE t1 SET a = 0 WHERE 0} db2} msg]
|
|
execsql {ROLLBACK} db2
|
|
lappend r $msg
|
|
} {1 {database is locked}}
|
|
|
|
# A thread can read when another has a RESERVED lock.
|
|
#
|
|
do_test lock-2.2 {
|
|
catchsql {SELECT * FROM t2} db2
|
|
} {0 {9 8}}
|
|
|
|
# If the other thread (the one that does not hold the transaction with
|
|
# a RESERVED lock) tries to get a RESERVED lock, we get a busy callback.
|
|
#
|
|
do_test lock-2.3 {
|
|
proc callback {count} {
|
|
set ::callback_value $count
|
|
break
|
|
}
|
|
set ::callback_value {}
|
|
db2 busy callback
|
|
set r [catch {execsql {UPDATE t1 SET a=b, b=a} db2} msg]
|
|
lappend r $msg
|
|
lappend r $::callback_value
|
|
} {1 {database is locked} 1}
|
|
do_test lock-2.4 {
|
|
proc callback {count} {
|
|
lappend ::callback_value $count
|
|
if {$count>4} break
|
|
}
|
|
set ::callback_value {}
|
|
db2 busy callback
|
|
set r [catch {execsql {UPDATE t1 SET a=b, b=a} db2} msg]
|
|
lappend r $msg
|
|
lappend r $::callback_value
|
|
} {1 {database is locked} {1 2 3 4 5}}
|
|
do_test lock-2.5 {
|
|
proc callback {count} {
|
|
lappend ::callback_value $count
|
|
if {$count>4} break
|
|
}
|
|
set ::callback_value {}
|
|
db2 busy callback
|
|
set r [catch {execsql {SELECT * FROM t1} db2} msg]
|
|
lappend r $msg
|
|
lappend r $::callback_value
|
|
} {0 {2 1} {}}
|
|
|
|
# In this test, the 3rd invocation of the busy callback causes
|
|
# the first thread to release its transaction. That allows the
|
|
# second thread to continue.
|
|
#
|
|
do_test lock-2.6 {
|
|
proc callback {count} {
|
|
lappend ::callback_value $count
|
|
if {$count>2} {
|
|
execsql {ROLLBACK}
|
|
}
|
|
}
|
|
set ::callback_value {}
|
|
db2 busy callback
|
|
set r [catch {execsql {SELECT * FROM t2} db2} msg]
|
|
lappend r $msg
|
|
lappend r $::callback_value
|
|
} {0 {9 8} {}}
|
|
do_test lock-2.7 {
|
|
proc callback {count} {
|
|
lappend ::callback_value $count
|
|
if {$count>2} {
|
|
execsql {ROLLBACK}
|
|
}
|
|
}
|
|
set ::callback_value {}
|
|
db2 busy callback
|
|
execsql {BEGIN TRANSACTION} db2
|
|
set r [catch {execsql {UPDATE t1 SET a = 0 WHERE 0} db2} msg]
|
|
execsql {ROLLBACK} db2
|
|
lappend r $msg
|
|
lappend r $::callback_value
|
|
} {0 {} {1 2 3}}
|
|
|
|
# Test the built-in busy timeout handler
|
|
#
|
|
do_test lock-2.8 {
|
|
db2 timeout 400
|
|
execsql BEGIN
|
|
execsql {UPDATE t1 SET a = 0 WHERE 0}
|
|
catchsql BEGIN db2
|
|
catchsql {UPDATE t1 SET a = 0 WHERE 0} db2
|
|
} {1 {database is locked}}
|
|
do_test lock-2.9 {
|
|
db2 timeout 0
|
|
execsql COMMIT
|
|
} {}
|
|
integrity_check lock-2.10
|
|
|
|
# Try to start two transactions in a row
|
|
#
|
|
do_test lock-3.1 {
|
|
execsql {BEGIN TRANSACTION}
|
|
set r [catch {execsql {BEGIN TRANSACTION}} msg]
|
|
execsql {ROLLBACK}
|
|
lappend r $msg
|
|
} {1 {cannot start a transaction within a transaction}}
|
|
integrity_check lock-3.2
|
|
|
|
# Make sure the busy handler and error messages work when
|
|
# opening a new pointer to the database while another pointer
|
|
# has the database locked.
|
|
#
|
|
do_test lock-4.1 {
|
|
db2 close
|
|
catch {db eval ROLLBACK}
|
|
db eval BEGIN
|
|
db eval {UPDATE t1 SET a=0 WHERE 0}
|
|
sqlite db2 ./test.db
|
|
catchsql {UPDATE t1 SET a=0} db2
|
|
} {1 {database is locked}}
|
|
do_test lock-4.2 {
|
|
set ::callback_value {}
|
|
set rc [catch {db2 eval {UPDATE t1 SET a=0}} msg]
|
|
lappend rc $msg $::callback_value
|
|
} {1 {database is locked} {}}
|
|
do_test lock-4.3 {
|
|
proc callback {count} {
|
|
lappend ::callback_value $count
|
|
if {$count>4} break
|
|
}
|
|
db2 busy callback
|
|
set rc [catch {db2 eval {UPDATE t1 SET a=0}} msg]
|
|
lappend rc $msg $::callback_value
|
|
} {1 {database is locked} {1 2 3 4 5}}
|
|
execsql {ROLLBACK}
|
|
|
|
# When one thread is writing, other threads cannot read. Except if the
|
|
# writing thread is writing to its temporary tables, the other threads
|
|
# can still read. -> Not so in 3.0. One thread can read while another
|
|
# holds a RESERVED lock.
|
|
#
|
|
proc tx_exec {sql} {
|
|
db2 eval $sql
|
|
}
|
|
do_test lock-5.1 {
|
|
execsql {
|
|
SELECT * FROM t1
|
|
}
|
|
} {2 1}
|
|
do_test lock-5.2 {
|
|
db function tx_exec tx_exec
|
|
catchsql {
|
|
INSERT INTO t1(a,b) SELECT 3, tx_exec('SELECT y FROM t2 LIMIT 1');
|
|
}
|
|
} {0 {}}
|
|
do_test lock-5.3 {
|
|
execsql {
|
|
CREATE TEMP TABLE t3(x);
|
|
SELECT * FROM t3;
|
|
}
|
|
} {}
|
|
do_test lock-5.4 {
|
|
catchsql {
|
|
INSERT INTO t3 SELECT tx_exec('SELECT y FROM t2 LIMIT 1');
|
|
}
|
|
} {0 {}}
|
|
do_test lock-5.5 {
|
|
execsql {
|
|
SELECT * FROM t3;
|
|
}
|
|
} {8}
|
|
do_test lock-5.6 {
|
|
catchsql {
|
|
UPDATE t1 SET a=tx_exec('SELECT x FROM t2');
|
|
}
|
|
} {0 {}}
|
|
do_test lock-5.7 {
|
|
execsql {
|
|
SELECT * FROM t1;
|
|
}
|
|
} {9 1 9 8}
|
|
do_test lock-5.8 {
|
|
catchsql {
|
|
UPDATE t3 SET x=tx_exec('SELECT x FROM t2');
|
|
}
|
|
} {0 {}}
|
|
do_test lock-5.9 {
|
|
execsql {
|
|
SELECT * FROM t3;
|
|
}
|
|
} {9}
|
|
|
|
do_test lock-999.1 {
|
|
rename db2 {}
|
|
} {}
|
|
|
|
finish_test
|