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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 | |
18 set testdir [file dirname $argv0] | |
19 source $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 # | |
24 do_not_use_codec | |
25 | |
26 # Create a database. | |
27 # | |
28 do_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 # | |
40 do_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 # | |
47 do_test rdonly-1.2 { | |
48 db close | |
49 hexio_get_int [hexio_read test.db 18 1] | |
50 } 1 | |
51 do_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} | |
58 do_test rdonly-1.3.1 { | |
59 sqlite3_db_readonly db main | |
60 } {1} | |
61 do_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 # | |
70 do_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 # | |
85 set ro_version 02 | |
86 ifcapable wal { set ro_version 03 } | |
87 do_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 | |
95 finish_test | |
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