AryaWu/sqlite

1# 2007 April 242#3# The author disclaims copyright to this source code.  In place of4# 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 database14# 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.tcl20 21# Do not use a codec for tests in this file, as the database file is22# manipulated directly using tcl scripts (using the [hexio_write] command).23#24do_not_use_codec25 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) interface37# returns 1 if the database N of connection D is read-only, 0 if it is38# 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 main42} {0}43 44# Changes the write version from 1 to 3.  Verify that the database45# can be read but not written.46#47do_test rdonly-1.2 {48  db close49  hexio_get_int [hexio_read test.db 18 1]50} 151do_test rdonly-1.3 {52  hexio_write test.db 18 0353  sqlite3 db test.db54  execsql {55    SELECT * FROM t1;56  }57} {1}58do_test rdonly-1.3.1 {59  sqlite3_db_readonly db main60} {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 database68# is read-write again.69#70do_test rdonly-1.5 {71  db close72  hexio_write test.db 18 0173  sqlite3 db test.db74  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 the81# write-version of the file (and the change-counter, so that the 82# write-version is reloaded). This way, SQLite does not discover that83# the database is read-only until after it is locked.84#85set ro_version 0286ifcapable wal { set ro_version 03 }87do_test rdonly-1.6 {88  hexio_write test.db 18 $ro_version     ; # write-version89  hexio_write test.db 24 11223344        ; # change-counter90  catchsql {91    INSERT INTO t1 VALUES(2);92  }93} {1 {attempt to write a readonly database}}94 95finish_test96