117 lines
3.3 KiB
Plaintext
117 lines
3.3 KiB
Plaintext
# 2004 August 30
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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# This file implements regression tests for SQLite library.
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#
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# This file implements tests to make sure SQLite does not crash or
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# segfault if it sees a corrupt database file.
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#
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# $Id: corrupt.test,v 1.4 2005/01/20 02:17:02 danielk1977 Exp $
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catch {file delete -force test.db}
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catch {file delete -force test.db-journal}
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# Construct a large database for testing.
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#
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do_test corrupt-1.1 {
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execsql {
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BEGIN;
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CREATE TABLE t1(x);
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INSERT INTO t1 VALUES(randstr(10,100));
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INSERT INTO t1 VALUES(randstr(10,100));
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INSERT INTO t1 VALUES(randstr(10,100));
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INSERT INTO t1 SELECT x || randstr(5,10) FROM t1;
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INSERT INTO t1 SELECT x || randstr(5,10) FROM t1;
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INSERT INTO t1 SELECT x || randstr(5,10) FROM t1;
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INSERT INTO t1 SELECT x || randstr(5,10) FROM t1;
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INSERT INTO t1 VALUES(randstr(2100,3000));
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INSERT INTO t1 SELECT x || randstr(5,10) FROM t1;
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INSERT INTO t1 SELECT x || randstr(5,10) FROM t1;
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INSERT INTO t1 SELECT x || randstr(5,10) FROM t1;
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INSERT INTO t1 SELECT x || randstr(5,10) FROM t1;
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CREATE INDEX t1i1 ON t1(x);
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CREATE TABLE t2 AS SELECT * FROM t1;
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DELETE FROM t2 WHERE rowid%5!=0;
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COMMIT;
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}
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} {}
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integrity_check corrupt-1.2
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# Copy file $from into $to
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#
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proc copy_file {from to} {
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set f [open $from]
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fconfigure $f -translation binary
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set t [open $to w]
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fconfigure $t -translation binary
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puts -nonewline $t [read $f [file size $from]]
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close $t
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close $f
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}
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# Setup for the tests. Make a backup copy of the good database in test.bu.
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# Create a string of garbage data that is 256 bytes long.
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#
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copy_file test.db test.bu
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set fsize [file size test.db]
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set junk "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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while {[string length $junk]<256} {append junk $junk}
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set junk [string range $junk 0 255]
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# Go through the database and write garbage data into each 256 segment
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# of the file. Then do various operations on the file to make sure that
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# the database engine can recover gracefully from the corruption.
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#
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for {set i [expr {1*256}]} {$i<$fsize-256} {incr i 256} {
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set tn [expr {$i/256}]
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db close
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copy_file test.bu test.db
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set fd [open test.db r+]
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fconfigure $fd -translation binary
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seek $fd $i
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puts -nonewline $fd $junk
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close $fd
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sqlite3 db test.db
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do_test corrupt-2.$tn.1 {
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sqlite3 db test.db
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catchsql {SELECT count(*) FROM sqlite_master}
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set x {}
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} {}
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do_test corrupt-2.$tn.2 {
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catchsql {SELECT count(*) FROM t1}
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set x {}
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} {}
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do_test corrupt-2.$tn.3 {
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catchsql {SELECT count(*) FROM t1 WHERE x>'abcdef'}
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set x {}
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} {}
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do_test corrupt-2.$tn.4 {
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catchsql {SELECT count(*) FROM t2}
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set x {}
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} {}
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do_test corrupt-2.$tn.5 {
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catchsql {CREATE TABLE t3 AS SELECT * FROM t1}
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set x {}
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} {}
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do_test corrupt-2.$tn.6 {
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catchsql {DROP TABLE t1}
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set x {}
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} {}
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do_test corrupt-2.$tn.7 {
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catchsql {PRAGMA integrity_check}
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set x {}
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} {}
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}
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finish_test
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