xref: /sqlite-3.40.0/test/rdonly.test (revision 8dd7a6a9) 
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# EVIDENCE-OF: R-29639-16887 The sqlite3_db_readonly(D,N) interface
37# returns 1 if the database N of connection D is read-only, 0 if it is
38# read/write, or -1 if N is not the name of a database on connection D.
39#
40do_test rdonly-1.1.1 {
41  sqlite3_db_readonly db main
42} {0}
43
44# Changes the write version from 1 to 3.  Verify that the database
45# can be read but not written.
46#
47do_test rdonly-1.2 {
48  db close
49  hexio_get_int [hexio_read test.db 18 1]
50} 1
51do_test rdonly-1.3 {
52  hexio_write test.db 18 03
53  sqlite3 db test.db
54  execsql {
55    SELECT * FROM t1;
56  }
57} {1}
58do_test rdonly-1.3.1 {
59  sqlite3_db_readonly db main
60} {1}
61do_test rdonly-1.4 {
62  catchsql {
63    INSERT INTO t1 VALUES(2)
64  }
65} {1 {attempt to write a readonly database}}
66
67# Change the write version back to 1.  Verify that the database
68# is read-write again.
69#
70do_test rdonly-1.5 {
71  db close
72  hexio_write test.db 18 01
73  sqlite3 db test.db
74  catchsql {
75    INSERT INTO t1 VALUES(2);
76    SELECT * FROM t1;
77  }
78} {0 {1 2}}
79
80# Now, after connection [db] has loaded the database schema, modify the
81# write-version of the file (and the change-counter, so that the
82# write-version is reloaded). This way, SQLite does not discover that
83# the database is read-only until after it is locked.
84#
85set ro_version 02
86ifcapable wal { set ro_version 03 }
87do_test rdonly-1.6 {
88  hexio_write test.db 18 $ro_version     ; # write-version
89  hexio_write test.db 24 11223344        ; # change-counter
90  catchsql {
91    INSERT INTO t1 VALUES(2);
92  }
93} {1 {attempt to write a readonly database}}
94
95finish_test
96