mirror of
https://github.com/tursodatabase/libsql.git
synced 2024-12-15 07:29:41 +00:00
87 lines
1.9 KiB
Plaintext
87 lines
1.9 KiB
Plaintext
# 2008 May 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.
|
|
#
|
|
#***********************************************************************
|
|
#
|
|
# Ticket #3093
|
|
#
|
|
# Verify that a busy callback waiting on a reserved lock resolves
|
|
# once the lock clears.
|
|
#
|
|
# $Id: tkt3093.test,v 1.2 2008/05/02 14:23:55 drh Exp $
|
|
#
|
|
|
|
set testdir [file dirname $argv0]
|
|
source $testdir/tester.tcl
|
|
|
|
# Set up a test database
|
|
#
|
|
do_test tkt3093.1 {
|
|
db eval {
|
|
CREATE TABLE t1(x);
|
|
INSERT INTO t1 VALUES(1);
|
|
SELECT * FROM t1
|
|
}
|
|
} {1}
|
|
|
|
# Establish a separate, independent connection to that database.
|
|
#
|
|
do_test tkt3093.2 {
|
|
catch {sqlite3_enable_shared_cache 0}
|
|
sqlite3 db2 test.db
|
|
db2 eval {
|
|
SELECT * FROM t1
|
|
}
|
|
} {1}
|
|
|
|
# Make sure that clearing a lock allows a pending request for
|
|
# a reserved lock to continue.
|
|
#
|
|
do_test tkt3093.3 {
|
|
# This will be the busy callback for connection db2. On the first
|
|
# busy callback, commit the transaction in db. This should clear
|
|
# the lock so that there should not be a second callback. If the
|
|
# busy handler is called a second time, then fail so that we get
|
|
# timeout.
|
|
proc busy_callback {cnt} {
|
|
if {$cnt==0} {
|
|
db eval COMMIT
|
|
return 0
|
|
} else {
|
|
return 1
|
|
}
|
|
}
|
|
db2 busy ::busy_callback
|
|
|
|
# Start a write transaction on db.
|
|
db eval {
|
|
BEGIN;
|
|
INSERT INTO t1 VALUES(2);
|
|
}
|
|
|
|
# Attempt to modify the database on db2
|
|
catchsql {
|
|
UPDATE t1 SET x=x+1;
|
|
} db2
|
|
} {0 {}}
|
|
|
|
# Verify that everything worked as expected. The db transaction should
|
|
# have gone first and added entry 2. Then the db2 transaction would have
|
|
# run and added one to each entry.
|
|
#
|
|
do_test tkt3093.4 {
|
|
db eval {SELECT * FROM t1}
|
|
} {2 3}
|
|
do_test tkt3093.5 {
|
|
db2 eval {SELECT * FROM t1}
|
|
} {2 3}
|
|
db2 close
|
|
|
|
finish_test
|