gitlab.com/CoiaPrant/sqlite3@v1.19.1/testdata/tcl/rdonly.test (about) 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