150 lines
4.3 KiB
Plaintext
150 lines
4.3 KiB
Plaintext
# 2007 December 20
|
|
#
|
|
# 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: tkt2854.test,v 1.4 2009/03/16 13:19:36 danielk1977 Exp $
|
|
|
|
set testdir [file dirname $argv0]
|
|
source $testdir/tester.tcl
|
|
db close
|
|
|
|
ifcapable !shared_cache {
|
|
finish_test
|
|
return
|
|
}
|
|
|
|
set ::enable_shared_cache [sqlite3_enable_shared_cache 1]
|
|
|
|
# Open 3 database connections. Connection "db" and "db2" share a cache.
|
|
# Connection "db3" has its own cache.
|
|
#
|
|
do_test tkt2854-1.1 {
|
|
sqlite3 db test.db
|
|
sqlite3 db2 test.db
|
|
|
|
# This is taken from shared.test. The Windows VFS expands
|
|
# ./test.db (and test.db) to be the same thing so the path
|
|
# matches and they share a cache. By changing the case
|
|
# for Windows platform, we get around this and get a separate
|
|
# connection.
|
|
if {$::tcl_platform(platform)=="unix"} {
|
|
sqlite3 db3 ./test.db
|
|
} else {
|
|
sqlite3 db3 TEST.DB
|
|
}
|
|
|
|
db eval {
|
|
CREATE TABLE abc(a, b, c);
|
|
}
|
|
} {}
|
|
|
|
# Check that an exclusive lock cannot be obtained if some other
|
|
# shared-cache connection has a read-lock on a table.
|
|
#
|
|
do_test tkt2854-1.2 {
|
|
execsql {
|
|
BEGIN;
|
|
SELECT * FROM abc;
|
|
} db2
|
|
} {}
|
|
do_test tkt2854-1.3 {
|
|
catchsql { BEGIN EXCLUSIVE } db
|
|
} {1 {database table is locked}}
|
|
do_test tkt2854-1.4 {
|
|
execsql { SELECT * FROM abc } db3
|
|
} {}
|
|
do_test tkt2854-1.5 {
|
|
catchsql { INSERT INTO abc VALUES(1, 2, 3) } db3
|
|
} {1 {database is locked}}
|
|
do_test tkt2854-1.6 {
|
|
execsql { COMMIT } db2
|
|
} {}
|
|
|
|
# Check that an exclusive lock prevents other shared-cache users from
|
|
# starting a transaction.
|
|
#
|
|
do_test tkt2854-1.7 {
|
|
set ::DB2 [sqlite3_connection_pointer db2]
|
|
set ::STMT1 [sqlite3_prepare $DB2 "SELECT * FROM abc" -1 TAIL]
|
|
set ::STMT2 [sqlite3_prepare $DB2 "BEGIN EXCLUSIVE" -1 TAIL]
|
|
set ::STMT3 [sqlite3_prepare $DB2 "BEGIN IMMEDIATE" -1 TAIL]
|
|
set ::STMT4 [sqlite3_prepare $DB2 "BEGIN" -1 TAIL]
|
|
set ::STMT5 [sqlite3_prepare $DB2 "COMMIT" -1 TAIL]
|
|
execsql { BEGIN EXCLUSIVE } db
|
|
} {}
|
|
do_test tkt2854-1.8 {
|
|
catchsql { BEGIN EXCLUSIVE } db2
|
|
} {1 {database schema is locked: main}}
|
|
do_test tkt2854-1.9 {
|
|
catchsql { BEGIN IMMEDIATE } db2
|
|
} {1 {database schema is locked: main}}
|
|
do_test tkt2854-1.10 {
|
|
# This fails because the schema of main cannot be verified.
|
|
catchsql { BEGIN } db2
|
|
} {1 {database schema is locked: main}}
|
|
|
|
# Check that an exclusive lock prevents other shared-cache users from
|
|
# reading the database. Use stored statements so that the error occurs
|
|
# at the b-tree level, not the schema level.
|
|
#
|
|
do_test tkt2854-1.11 {
|
|
list [sqlite3_step $::STMT1] [sqlite3_finalize $::STMT1]
|
|
} {SQLITE_ERROR SQLITE_LOCKED}
|
|
do_test tkt2854-1.12 {
|
|
list [sqlite3_step $::STMT2] [sqlite3_finalize $::STMT2]
|
|
} {SQLITE_ERROR SQLITE_LOCKED}
|
|
do_test tkt2854-1.13 {
|
|
list [sqlite3_step $::STMT3] [sqlite3_finalize $::STMT3]
|
|
} {SQLITE_ERROR SQLITE_LOCKED}
|
|
do_test tkt2854-1.14 {
|
|
# A regular "BEGIN" doesn't touch any databases. So it succeeds.
|
|
list [sqlite3_step $::STMT4] [sqlite3_finalize $::STMT4]
|
|
} {SQLITE_DONE SQLITE_OK}
|
|
do_test tkt2854-1.15 {
|
|
# As does a COMMIT.
|
|
list [sqlite3_step $::STMT5] [sqlite3_finalize $::STMT5]
|
|
} {SQLITE_DONE SQLITE_OK}
|
|
|
|
# Try to read the database using connection "db3" (which does not share
|
|
# a cache with "db"). The database should be locked.
|
|
do_test tkt2854-1.16 {
|
|
catchsql { SELECT * FROM abc } db3
|
|
} {1 {database is locked}}
|
|
do_test tkt2854-1.17 {
|
|
execsql { COMMIT } db
|
|
} {}
|
|
do_test tkt2854-1.18 {
|
|
execsql { SELECT * FROM abc } db2
|
|
} {}
|
|
|
|
# Check that if an attempt to obtain an exclusive lock fails because an
|
|
# attached db cannot be locked, the internal exclusive flag used by
|
|
# shared-cache users is correctly cleared.
|
|
do_test tkt2854-1.19 {
|
|
forcedelete test2.db test2.db-journal
|
|
sqlite3 db4 test2.db
|
|
execsql { CREATE TABLE def(d, e, f) } db4
|
|
execsql { ATTACH 'test2.db' AS aux } db
|
|
} {}
|
|
do_test tkt2854-1.20 {
|
|
execsql {BEGIN IMMEDIATE} db4
|
|
catchsql {BEGIN EXCLUSIVE} db
|
|
} {1 {database table is locked}}
|
|
do_test tkt2854-1.21 {
|
|
execsql {SELECT * FROM abc} db2
|
|
} {}
|
|
|
|
db close
|
|
db2 close
|
|
db3 close
|
|
db4 close
|
|
sqlite3_enable_shared_cache $::enable_shared_cache
|
|
finish_test
|