sqlite/test/memdb2.test

# 2022-12-05
#
# 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 "memdb" VFS
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix memdb1
do_not_use_codec

ifcapable !deserialize {
  finish_test
  return
}

db close

#-------------------------------------------------------------------------
# Test that when using a memdb database, it is not possible to upgrade
# to an EXCLUSIVE lock if some other client is holding SHARED.
#
sqlite3 db  file:/test.db?vfs=memdb -uri 1
sqlite3 db2 file:/test.db?vfs=memdb -uri 1

do_execsql_test 1.1 {
  CREATE TABLE t1(x, y);
  INSERT INTO t1 VALUES(1, 2);
}

do_execsql_test -db db2 1.2 {
  BEGIN;
    SELECT * FROM t1;
} {1 2}

do_execsql_test 1.3 {
  BEGIN;
    INSERT INTO t1 VALUES(3, 4);
}

do_catchsql_test 1.4 {
  COMMIT
} {1 {database is locked}}

do_execsql_test -db db2 1.5 {
    SELECT * FROM t1;
  END;
} {1 2}

do_execsql_test 1.6 {
  COMMIT
} {}

do_execsql_test -db db2 1.7 {
  SELECT * FROM t1
} {1 2 3 4}

finish_test