xref: /sqlite-3.40.0/test/rdonly.test (revision bd41d566) 
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}
35do_test rdonly-1.1.1 {
36  sqlite3_db_readonly db main
37} {0}
38
39# Changes the write version from 1 to 3.  Verify that the database
40# can be read but not written.
41#
42do_test rdonly-1.2 {
43  db close
44  hexio_get_int [hexio_read test.db 18 1]
45} 1
46do_test rdonly-1.3 {
47  hexio_write test.db 18 03
48  sqlite3 db test.db
49  execsql {
50    SELECT * FROM t1;
51  }
52} {1}
53do_test rdonly-1.3.1 {
54  sqlite3_db_readonly db main
55} {1}
56do_test rdonly-1.4 {
57  catchsql {
58    INSERT INTO t1 VALUES(2)
59  }
60} {1 {attempt to write a readonly database}}
61
62# Change the write version back to 1.  Verify that the database
63# is read-write again.
64#
65do_test rdonly-1.5 {
66  db close
67  hexio_write test.db 18 01
68  sqlite3 db test.db
69  catchsql {
70    INSERT INTO t1 VALUES(2);
71    SELECT * FROM t1;
72  }
73} {0 {1 2}}
74
75# Now, after connection [db] has loaded the database schema, modify the
76# write-version of the file (and the change-counter, so that the
77# write-version is reloaded). This way, SQLite does not discover that
78# the database is read-only until after it is locked.
79#
80set ro_version 02
81ifcapable wal { set ro_version 03 }
82do_test rdonly-1.6 {
83  hexio_write test.db 18 $ro_version     ; # write-version
84  hexio_write test.db 24 11223344        ; # change-counter
85  catchsql {
86    INSERT INTO t1 VALUES(2);
87  }
88} {1 {attempt to write a readonly database}}
89
90finish_test
91