xref: /sqlite-3.40.0/test/rdonly.test (revision 3aa4b67f) 
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
22# Create a database.
23#
24do_test rdonly-1.1 {
25  execsql {
26    CREATE TABLE t1(x);
27    INSERT INTO t1 VALUES(1);
28    SELECT * FROM t1;
29  }
30} {1}
31
32# Changes the write version from 1 to 2.  Verify that the database
33# can be read but not written.
34#
35do_test rdonly-1.2 {
36  db close
37  hexio_get_int [hexio_read test.db 18 1]
38} 1
39do_test rdonly-1.3 {
40  hexio_write test.db 18 02
41  sqlite3 db test.db
42  execsql {
43    SELECT * FROM t1;
44  }
45} {1}
46do_test rdonly-1.4 {
47  catchsql {
48    INSERT INTO t1 VALUES(2)
49  }
50} {1 {attempt to write a readonly database}}
51
52# Change the write version back to 1.  Verify that the database
53# is read-write again.
54#
55do_test rdonly-1.5 {
56  db close
57  hexio_write test.db 18 01
58  sqlite3 db test.db
59  catchsql {
60    INSERT INTO t1 VALUES(2);
61    SELECT * FROM t1;
62  }
63} {0 {1 2}}
64
65# Now, after connection [db] has loaded the database schema, modify the
66# write-version of the file (and the change-counter, so that the
67# write-version is reloaded). This way, SQLite does not discover that
68# the database is read-only until after it is locked.
69#
70do_test rdonly-1.6 {
71  hexio_write test.db 18 02              ; # write-version
72  hexio_write test.db 24 11223344        ; # change-counter
73  catchsql {
74    INSERT INTO t1 VALUES(2);
75  }
76} {1 {attempt to write a readonly database}}
77
78finish_test
79