1# 2007 April 24
2#
3# The author disclaims copyright to this source code.  In place of
4# a legal notice, here is a blessing:
5#
6#    May you do good and not evil.
7#    May you find forgiveness for yourself and forgive others.
8#    May you share freely, never taking more than you give.
9#
10#***********************************************************************
11# This file implements regression tests for SQLite library.
12#
13# This file implements tests to make sure SQLite treats a database
14# as readonly if its write version is set to  high.
15#
16# $Id: rdonly.test,v 1.2 2008/07/08 10:19:58 danielk1977 Exp $
17
18set testdir [file dirname $argv0]
19source $testdir/tester.tcl
20
21# Do not use a codec for tests in this file, as the database file is
22# manipulated directly using tcl scripts (using the [hexio_write] command).
23#
24do_not_use_codec
25
26# Create a database.
27#
28do_test rdonly-1.1 {
29  execsql {
30    CREATE TABLE t1(x);
31    INSERT INTO t1 VALUES(1);
32    SELECT * FROM t1;
33  }
34} {1}
35
36# Changes the write version from 1 to 3.  Verify that the database
37# can be read but not written.
38#
39do_test rdonly-1.2 {
40  db close
41  hexio_get_int [hexio_read test.db 18 1]
42} 1
43do_test rdonly-1.3 {
44  hexio_write test.db 18 03
45  sqlite3 db test.db
46  execsql {
47    SELECT * FROM t1;
48  }
49} {1}
50do_test rdonly-1.4 {
51  catchsql {
52    INSERT INTO t1 VALUES(2)
53  }
54} {1 {attempt to write a readonly database}}
55
56# Change the write version back to 1.  Verify that the database
57# is read-write again.
58#
59do_test rdonly-1.5 {
60  db close
61  hexio_write test.db 18 01
62  sqlite3 db test.db
63  catchsql {
64    INSERT INTO t1 VALUES(2);
65    SELECT * FROM t1;
66  }
67} {0 {1 2}}
68
69# Now, after connection [db] has loaded the database schema, modify the
70# write-version of the file (and the change-counter, so that the
71# write-version is reloaded). This way, SQLite does not discover that
72# the database is read-only until after it is locked.
73#
74set ro_version 02
75ifcapable wal { set ro_version 03 }
76do_test rdonly-1.6 {
77  hexio_write test.db 18 $ro_version     ; # write-version
78  hexio_write test.db 24 11223344        ; # change-counter
79  catchsql {
80    INSERT INTO t1 VALUES(2);
81  }
82} {1 {attempt to write a readonly database}}
83
84finish_test
85