mirror of
https://github.com/tursodatabase/libsql.git
synced 2024-12-15 20:20:20 +00:00
100 lines
2.6 KiB
Plaintext
100 lines
2.6 KiB
Plaintext
# 2016 September 23
|
|
#
|
|
# 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 file is the sqlite3_snapshot_xxx() APIs.
|
|
#
|
|
|
|
set testdir [file dirname $argv0]
|
|
source $testdir/tester.tcl
|
|
ifcapable !snapshot {finish_test; return}
|
|
set testprefix snapshot3
|
|
|
|
# This test does not work with the inmemory_journal permutation. The reason
|
|
# is that each connection opened as part of this permutation executes
|
|
# "PRAGMA journal_mode=memory", which fails if the database is in wal mode
|
|
# and there are one or more existing connections.
|
|
if {[permutation]=="inmemory_journal"} {
|
|
finish_test
|
|
return
|
|
}
|
|
|
|
#-------------------------------------------------------------------------
|
|
# This block of tests verifies that it is not possible to wrap the wal
|
|
# file - using a writer or a "PRAGMA wal_checkpoint = TRUNCATE" - while
|
|
# there is an open snapshot transaction (transaction opened using
|
|
# sqlite3_snapshot_open()).
|
|
#
|
|
do_execsql_test 1.0 {
|
|
CREATE TABLE t1(y);
|
|
PRAGMA journal_mode = wal;
|
|
INSERT INTO t1 VALUES(1);
|
|
INSERT INTO t1 VALUES(2);
|
|
INSERT INTO t1 VALUES(3);
|
|
INSERT INTO t1 VALUES(4);
|
|
} {wal}
|
|
|
|
do_test 1.1 {
|
|
sqlite3 db2 test.db
|
|
sqlite3 db3 test.db
|
|
|
|
execsql {SELECT * FROM sqlite_master} db2
|
|
execsql {SELECT * FROM sqlite_master} db3
|
|
|
|
db2 trans { set snap [sqlite3_snapshot_get_blob db2 main] }
|
|
db2 eval { SELECT * FROM t1 }
|
|
} {1 2 3 4}
|
|
|
|
do_test 1.2 {
|
|
execsql BEGIN db2
|
|
sqlite3_snapshot_open_blob db2 main $snap
|
|
db2 eval { SELECT * FROM t1 }
|
|
} {1 2 3 4}
|
|
|
|
do_test 1.2 {
|
|
execsql END db2
|
|
execsql { PRAGMA wal_checkpoint }
|
|
|
|
execsql BEGIN db2
|
|
sqlite3_snapshot_open_blob db2 main $snap
|
|
db2 eval { SELECT * FROM t1 }
|
|
} {1 2 3 4}
|
|
|
|
set sz [file size test.db-wal]
|
|
do_test 1.3 {
|
|
execsql { PRAGMA wal_checkpoint = truncate }
|
|
file size test.db-wal
|
|
} $sz
|
|
|
|
do_test 1.4 {
|
|
execsql BEGIN db3
|
|
list [catch { sqlite3_snapshot_open_blob db3 main $snap } msg] $msg
|
|
} {0 {}}
|
|
|
|
do_test 1.5 {
|
|
db3 eval { SELECT * FROM t1; END }
|
|
} {1 2 3 4}
|
|
|
|
do_test 1.6 {
|
|
db2 eval { SELECT * FROM t1; END }
|
|
} {1 2 3 4}
|
|
|
|
do_test 1.7 {
|
|
execsql { PRAGMA wal_checkpoint = truncate }
|
|
file size test.db-wal
|
|
} 0
|
|
|
|
do_test 1.8 {
|
|
execsql BEGIN db3
|
|
list [catch { sqlite3_snapshot_open_blob db3 main $snap } msg] $msg
|
|
} {1 SQLITE_ERROR_SNAPSHOT}
|
|
|
|
finish_test
|